%% (Internal) GUI for correcting QRS detections
%
% Description:
% This function implements a graphical user interface (GUI) to correct annotations
% possibly previous performed by an automatic algorithm. The idea is to
% easily visualize, compare and correct annotations. For this purpose the
% GUI presents several representations of the time evolution of the events
% (possibly but not necessarily heartbeats).
%
% Arguments:
%
%     +ECG: [numeric or cell]
%
%           [numeric]: signal matrix of dimension [sig_length sig_size
%           repetitions_size] where:
%             - sig_length: time length in samples
%             - sig_size: number of ECG  or number of signals.
%             - repetitions_size: number of repetitions of the same
%             signals. Typically used when time-synchronized events, like
%             heartbeats.
%
%           [cell]: cell array of length repetitions_size, where each cell
%           is (probably a time alligned event) a signal of dimension
%           [sig_length sig_size]
%
%     +QRS_locations: [numeric] OPTIONAL. Default values enclosed in ()
%                 Synchronization sample. In ECG context, this values are
%                 the QRS fiducial point. (empty)
%
%
%     +ECG_header: [struct] OPTIONAL.
%
%             Description of the ECG typically available in the
%             header. Structure with fields:
%
%               -freq: Sampling rate in Hz. (1)
%
%               -nsig: Number of ECG leads. (size(ECG,2))
%
%               -nsamp: Number of ECG samples. (size(ECG,1))
%
%               -adczero: ADC offset (e.g. 2^(adc_res-1) when
%               using unsigned integers). ( repmat(0, ECG_header.nsig , 1) )
%
%               -adcgain: ADC gain in units/adc_sample
%               (typically uV/adc_unit). ( repmat(1, ECG_header.nsig , 1) )
%
%               -units: Measurement units. ( repmat('uV', ECG_header.nsig , 1) )
%
%               -desc: Signal description. ( num2str(colvec(1:ECG_header.nsig)) )
%
%     +QRS_annotations: [cell] OPTIONAL. Default values enclosed in ()
%               Annotations to be included in the mosaic. The funcion
%               accepts 2 type of annotations: points and lines.
%
% Example:
%
%    https://www.youtube.com/watch?v=qgWjvsvafVg&list=PLlD2eDv5CIe9sA2atmnb-DX48FIRG46z7&index=3
%
% See also ECGtask_QRS_corrector
%
% Limits and Known bugs:
%   Probably a lot :( ... but dont panic! send me feedback if you need help.
%
% Author: Mariano Llamedo Soria (llamedom at frba.utn.edu.ar)
% Version: 0.1 beta
% Birthdate  : 16/2/2012
% Last update: 7/2/2014
% Copyright 2008-2015
%
function ann_output = QRScorrector(varargin)

    %% Constants
    cached_filename = 'tmp_QRScorrector_cache.mat';

    cHeaderFieldNamesRequired = {'freq' 'nsamp' 'nsig' 'gain' 'adczero' };
    cAnnotationsFieldNamesRequired = {'time', 'qrs' };

    ann_output = [];

    %% Argument parsing

    %argument definition
    p = inputParser;   % Create instance of inputParser class.
    p.addParamValue('FilterSignals', [], @(x)( islogical(x)));
    p.addParamValue('BuildArtificial', false, @(x)( islogical(x)));
    p.addParamValue('recording', [], @(x)( ischar(x)));
    p.addParamValue('recording_path', [], @(x)( ischar(x)));
    p.addParamValue('leads', 1, @(x)( isnumeric(x) && ~isempty(x) && all(x > 0) || ischar(x) || iscellstr(x) ) );
    p.addParamValue('recording_indexes', [], @(x)( isnumeric(x) && all(x > 0) ) );
    p.addParamValue('ECG', [], @(x)(isnumeric(x) || isa(x, 'ECGwrapper') ) );
    p.addParamValue('ECG_header', [], @(x)(isstruct(x)) );
    p.addParamValue('QRS_annotations', [], @(x)( (isnumeric(x) && all(x > 0)) || isstruct(x) ) );
    p.addParamValue('OutputVarName', 'payload', @(x)( ischar(x)));
    p.addParamValue('tmp_path', [], @(x)(ischar(x)) );
    p.addParamValue('Figure', [], @(x)(ishandle(x)) );

    try
        p.parse( varargin{:} );
    catch MyError
        rethrow(MyError);
    end

    hb_detail_window = 3;

    bFilter = p.Results.FilterSignals;
    bBuildArtificial = p.Results.BuildArtificial;
    recording = p.Results.recording;
    recording_path = p.Results.recording_path;
    recording_indexes = p.Results.recording_indexes;
    ECG = p.Results.ECG;
    ECG_header = p.Results.ECG_header;
    ECG_annotations = p.Results.QRS_annotations;
    tmp_path = p.Results.tmp_path;
    OutputVarName = p.Results.OutputVarName;
    fig_hdl = p.Results.Figure;
    lead_idx = p.Results.leads;

    title_efimero_hdl = [];
    RRserie_zoombars_hdl = [];
    RRserie_zoom_zoombars_hdl = [];
    Scatter_axes_hdl = [];
    RRserie_axes_hdl = [];
    RRserie_global_axes_hdl = [];
    RRserie_zoom_axes_hdl = [];
    ECG_axes_hdl = [];
    RRserie_selection_hdl = [];
    RRscatter_selection_hdl = [];
    copy_paste_buffer = [];

    RR_global_PM_hdl = [];
    RR_global_PM_patch_hdl = [];
    proximity_hdl = [];
    proximity_patch_hdl = [];
    similarity_hdl = [];
    similarity_hist_hdl = [];
    similarity_thr_hdl = [];
    similarity_hist_thr_hdl = [];
    pattMatch_hdl = [];
    pattMatch_patch_hdl = [];

    similarity_thr = nan;
    similarity_scale_thr = nan;
    similarity_min = nan;

    % Dont know why this variable uses a lot of bytes to store at disk.
    clear p

    %% Argument parsing

    bLoadECG = true;

    ECG_w = [];

    start_idx = 1;
    win_size = 30; % minutes
    min_win_size = 1; % minutes
    max_win_size = 60; % minutes

    start_idx_PM = 1;
    win_size_PM = 30; % minutes
    min_win_size_PM = 0.15; % minutes

    prev_val_drag = nan; % seconds
    win_size_zoom = 5; % seconds
    min_win_size_zoom = 0.5; % seconds
    max_win_size_zoom = 30; % seconds

    proximity_thr_PM = 0.3; % seconds
    max_proximity_win_size = 5; % seconds
    min_proximity_win_size = 0.01; % seconds

    max_pattern_match_win_size = 1; % seconds
    min_pattern_match_win_size = 0.001; % seconds

    pattern_match_xlims = [];

    % for similarity calculation
    resampled_ECG_similarity = [];
    similarity = [];
    ndown_similarity = nan;

    if( ~isempty(ECG) )
        %% ECG already read

        if( isempty(ECG_annotations))
            disp_string_framed('*[1,0.5,0]', 'No annotations provided' );
        else
            if( isstruct(ECG_annotations) )
                if( any(isfield(ECG_annotations, cAnnotationsFieldNamesRequired )) )
                    % only one ann struct provided
                    ECG_struct.provided_anns = ECG_annotations;
                else
                    bFieldFound = false;
                    for fn = rowvec(fieldnames(ECG_annotations))
                        if( ~isempty(intersect( fieldnames(ECG_annotations.(fn{1})), cAnnotationsFieldNamesRequired )) )
                            bFieldFound = true;
                            break
                        end
                    end

                    if( bFieldFound )
                        ECG_struct = ECG_annotations;
                    else
                        error( 'QRScorrector:ArgCheck:InvalidAnnotations', disp_option_enumeration( 'Please provide the following fields in the annotations struct:',  cAnnotationsFieldNamesRequired) );
                    end

                end
            else
                ECG_struct.provided_anns.time = ECG_annotations;
            end
        end

        if( isa(ECG, 'ECGwrapper') )
            % parse ECGwrapper object
            ECG_w = ECG;

            if( isempty(ECG_header) )
                ECG_struct.header = ECG_w.ECG_header;
            end

            ECG_struct.signal = ECG_w.read_signal(start_idx, start_idx + round(win_size * 60 *ECG_struct.header.freq) + 10 * ECG_struct.header.freq );

            if( isempty(recording_path) )
                recording_path = [fileparts(ECG_w.recording_name) filesep];
            end

        else

            if( isempty(ECG_header))
               error( 'QRScorrector:ArgCheck:InvalidHeader', 'Please provide the ECG header.\n\n' );
            else
                if( ~isfield(ECG_header, cHeaderFieldNamesRequired ) )
                    strAux = [ repmat(' + ', length(cHeaderFieldNamesRequired), 1) char(cHeaderFieldNamesRequired) repmat('\n', length(cHeaderFieldNamesRequired), 1 ) ];
                    error( 'QRScorrector:ArgCheck:InvalidHeader', ['Please provide the following fields in the header struct:\n ' rowvec(strAux') ] );
                end
            end

            ECG_struct.signal = ECG;
            ECG_struct.header = ECG_header;

        end

        clear ECG ECG_header ECG_annotations

        recording_indexes = 1;
        rec_names.name = ECG_struct.header.recname;

        if( isempty(recording_path) )
            recording_path = [fileparts(mfilename('fullpath')) filesep 'tmp' filesep ];
        end

        ratios = [];
        annotations_ranking = [];

        bLoadECG = false;

    elseif( ~isempty(recording) )

        recording_indexes = 1;
        if( isempty(recording_path) )
            [recording_path, rec_names.name, aux_ext] = fileparts(recording);
        else
            [~, rec_names.name, aux_ext] = fileparts(recording);
        end

        rec_names.name = [rec_names.name aux_ext];
        recording_path = [recording_path filesep];

    elseif( ~isempty(recording_path) )

        if( ~exist(recording_path, 'dir') )
            error('QRScorrector:ArgCheck:InvalidFolder', 'Folder does not exist.')
        end

        if( recording_path(end) ~= filesep )
            recording_path = [ recording_path filesep ];
        end

        rec_names = dir([recording_path '*.mat' ]);

        lrec_names = length(rec_names);

        if( lrec_names == 0)
            error([ 'No files found in ' recording_path ] )
        else

            if( isempty( recording_indexes ) )
                recording_indexes = 1:lrec_names;
            end

            lrec_names = length(recording_indexes);

            filename = [ recording_path 'tmp' filesep cached_filename ];

            bAux = (exist(filename, 'file') > 0);

            if( bAux )
                update_title_efimero(sprintf('Loading cached ratios from %s.\n', filename), 5 );

                aux_val2 = load(filename);
                ratios = aux_val2.ratios;
            end

            if( ~bAux || length(ratios) ~= lrec_names)

                ratios = nan(lrec_names,1);

                pb = progress_bar( 'Processing ratios', sprintf( '%d recordings found', lrec_names ) );

                pb.Loops2Do = lrec_names;

                for ii2 = recording_indexes
                    pb.start_loop();

                    pb.checkpoint(sprintf( 'Loading recording %d', ii2 ));
                    pepe = load([recording_path rec_names(ii2).name ], 'series_quality');
                    ratios(ii2) = max(pepe.series_quality.ratios);

                    pb.end_loop();
                end
%                 clear pb

                save(filename, 'ratios')
            end

            [~, worst_detections_idx] = sort(ratios);

            recording_indexes = recording_indexes(worst_detections_idx);

        end

    else
    %     strAux = help('QRScorrector'); %#ok<MCHLP>
        error( 'QRScorrector:ArgCheck:InvalidECGarg', 'Please provide an ECG recording as described in the documentation, help(''QRScorrector'') maybe could help you.\n' );
    end

    if( ischar(lead_idx) )
        lead_idx = cellstr(lead_idx);
    elseif isnumeric(lead_idx)
        if isempty(lead_idx) || isnan(lead_idx)
            lead_idx = 1;
        end
    else
        lead_idx = 1;
    end

    if( iscellstr(lead_idx) )
        [~, lead_idx] = intersect(upper(strtrim(cellstr(ECG_struct.header.desc))), upper(strtrim(lead_idx)) );
        if( isempty(lead_idx) )
            lead_idx = 1;
        end
    end

    end_idx = min(ECG_struct.header.nsamp, start_idx + round((win_size * 60)*ECG_struct.header.freq));
    end_idx_PM = end_idx;

    if( isempty(tmp_path) )
        tmp_path = [ tempdir 'QRS_corrector' filesep ];
    end

    %check path integrity.
    if(~exist(tmp_path, 'dir'))
        %try to create it
        if( ~mkdir(tmp_path) )
            error('QRScorrector:ArgCheck:InvalidPath', 'Invalid tmp_path. Please provide a valid path.\n' );
        end
    end

    major_tick_values_time = round([0.5 1 2 5 10 30 60]*ECG_struct.header.freq); % seconds
    major_tick_values_time = unique([major_tick_values_time major_tick_values_time*60 major_tick_values_time*60*60 ]);

    bAnnsEdited = false;
    bRecEdited = false;
    bSeries = false;

    all_annotations_selected = [];
    all_annotations_selected_serie_location = [];
    serie_location_mask = [];

    bFirstLoad = [];
    bSeriesChange = true;

    AnnNames = [];
    AnnNames_idx = [];
    all_annotations = [];
    estimated_labs = [];

    hb_idx = 1;
    selected_hb_idx = [];
    RRscatter_hb_idx_hdl = [];
    RRserie_hb_idx_hdl = [];
    undo_buffer = [];
    undo_buffer_idx = 1;
    Pattern_hdl = [];
    ECG_limits = [];
    bLockECG = false;

    anns_under_edition = [];
    RRserie_filt = {};
    RRserie = {};
    RR_idx = {};
    anns_under_edition_idx = [];

    if( isfield(ECG_struct.header, 'btime') )
        aux_val2 = datevec(datenum(ECG_struct.header.btime, 'HH:MM:SS'));
        base_start_time = round((aux_val2(4) * 60 * 60 + aux_val2(5) * 60 + aux_val2(6)) * ECG_struct.header.freq);
    else
        base_start_time = 1;
    end

    ColorOrder = my_colormap( 12 );
    all_markers = {'+','o','*','.','x','s','d','^','v','<','>','p','h'};

    side_plot_hdl = [];

    % axes indexes that will respond to the motion callback
    RRserie_global_axes_k = 1;
    RRserie_axes_k        = 2;
    RRserie_zoom_axes_k   = 3;
    RR_global_PM_k = 4;
    proximity_k = 5;
    similarity_hdl_k = 6;
    pattMatch_hdl_k = 7;
    similarity_hist_hdl_k = 8;

    axes_cant = 8; % amount of indexes to responde to the move callback

    axes_hdl = nan(axes_cant,3);
    axes_hdl_selector_idx = nan;

    x_timeScroll_units = [];
    bChangeWin = false;

    PrevStateWindowButtonMotionFcn = [];
    fIsDragAllowed = false;
    drag_start_x = [];
    drag_start_y = [];
    max_x_drag = [];
    min_y_drag = [];
    max_y_drag = [];

    filtro = [];
    rec_names = rec_names(recording_indexes,:);
    rec_idx = 1;
    recording_ratios = ratios;

    Xoffset = 0.09;
    Yoffset = 0.08;
    Xscale = 1.05;
    Yscale = 1.05;

    if( ECG_struct.header.nsamp > (win_size * 60 * ECG_struct.header.freq) )
        win_size = min(win_size, ECG_struct.header.nsamp / 60 / ECG_struct.header.freq / 3);
        size_y_RR_global = 0.13;
    else
        size_y_RR_global = 0;
        win_size = ceil(ECG_struct.header.nsamp / 60 / ECG_struct.header.freq);
        win_size_PM = win_size;
    end

    annotation_list_control = [];
    leads_control = [];
    recordings_control = [];
    annotation_under_edition_label = [];

    maximized_size = [];

    my_timer = timer('TimerFcn',@timer_fcn, 'StartDelay', 10);

    if( isempty(fig_hdl) )
        fig_hdl = figure();
    else
        clf(fig_hdl,'reset')
    end

    figPatternMatch_hdl = [];

    set(fig_hdl, 'WindowButtonDownFcn', @WindowButtonDownCallback2D);
    set(fig_hdl, 'WindowButtonUpFcn',   @WindowButtonUpCallback2D);
    set(fig_hdl, 'WindowKeyPressFcn',   @KeyPress);

    maximize(fig_hdl);
    maximized_size = get(fig_hdl, 'Position');

    set(fig_hdl, 'Position', [ maximized_size(3:4) maximized_size(3:4) ] .* [ 0.05 0.13 0.95 0.9] );

    set(fig_hdl,'CloseRequestFcn',@my_closefcn)

    DoRecording();

    function my_closefcn(obj,event_obj)

        if( bRecEdited )

           selection = questdlg('Unsaved results, edition will be lost. Exit anyway ?',...
              'Close Request Function',...
              'Yes','No','Yes');
           switch selection,
              case 'Yes',
                    stop(my_timer)
                    delete(my_timer)
                    delete(fig_hdl)
              case 'No'
              return
           end

        else
            stop(my_timer)
            delete(my_timer)
            delete(fig_hdl)
        end

    end

    function DoRecording()

        [~, rec_name] = fileparts(rec_names(rec_idx).name);

        rec_path = [tmp_path rec_name ];

        if(bLoadECG)
            ECG_struct = load(rec_path);
            ECG_struct.header.recname = rec_name;
        end

        bAnnsEdited = false;
        bRecEdited = false;

        RRserie_filt = {[]};

        hb_idx = 1;
        lead_idx = lead_idx( lead_idx <= ECG_struct.header.nsig );
        selected_hb_idx = [];
        RRscatter_hb_idx_hdl = [];
        RRserie_hb_idx_hdl = [];
        undo_buffer = [];
        undo_buffer_idx = 1;
        Pattern_hdl = [];

%         [~, ~, inv_dower_idx] = intersect({'I','II','V1','V2','V3','V4','V5','V6'}, cellstr(ECG_struct.header.desc));
%         if( length(inv_dower_idx) == 8 )
%             bUseDower = true;
%         else
%             inv_dower_idx = 1:ECG_struct.header.nsig;
%             bUseDower = false;
%         end

        ratios = [];
        AnnNames = [];
        all_annotations = [];
        estimated_labs = [];

        bFirstLoad = true;

        if( isempty(bFilter) )

            ECG_idx = get_ECG_idx_from_header(ECG_struct.header);

            if( isempty(ECG_idx) )
                bFilter = false;
                cprintf('[1,0.5,0]', disp_option_enumeration( 'No filter was applied since no ECG leads found. Lead description found:', cellstr(ECG_struct.header.desc) ) )
                fprintf(1, '\n')
            else
                bFilter = true;
            end

        end

        if( bFilter && isempty(filtro) )
            filtro = bandpass_filter_design( ECG_struct.header.freq );
        end

%         if( isfield(ECG_struct, 'noise_power') )
%             noise_power = ECG_struct.noise_power;
%         else
%             noise_power = [];
%         end

        if( isfield(ECG_struct, 'series_quality' ) )

            AnnNames = ECG_struct.series_quality.AnnNames;
            ratios = ECG_struct.series_quality.ratios;
            estimated_labs = ECG_struct.series_quality.estimated_labs;

            if( isfield(ECG_struct.series_quality, 'sampfreq' ) )

                ann_sampfreq = ECG_struct.series_quality.sampfreq;

            else
                % assumed in the same sampling rate
                ann_sampfreq = ECG_struct.header.freq;
            end

            % ratio to convert annotations @ ann_sampfreq to ECG_struct.header.freq
            aux_sampfreq_ratio = ECG_struct.header.freq / ann_sampfreq;

            cant_anns = size(AnnNames,1);

            all_annotations = cell(cant_anns,1);
            for jj = 1:cant_anns
                all_annotations{jj} = round(ECG_struct.(AnnNames{jj,1}).(AnnNames{jj,2}) * aux_sampfreq_ratio);
            end

        else

            calc_ratios();

        end

        if( isempty(ratios) )
            annotations_ranking = [];
        else

            [~, best_detections_idx] = sort(ratios, 'descend');

            aux_idx = find(cell2mat( cellfun(@(a)(~isempty(strfind(a, 'artificial'))), AnnNames(:,1), 'UniformOutput', false)));

            if( bBuildArtificial && isempty(aux_idx) && ~isempty(estimated_labs) )

                % generate artificial annotations combining K best annotations
                aux_idx = best_detections_idx(1:min(10, length(best_detections_idx)));
                artificial_annotations = combine_anns(all_annotations(aux_idx), estimated_labs(aux_idx), ECG_struct.header);

                if( ~isempty(artificial_annotations) )
                    for ii = length(artificial_annotations):-1:1
                        aux_str = ['artificial_' num2str(ii)];
                        ECG_struct.(aux_str) = artificial_annotations(ii);
                    end

                    calc_ratios();

                    [~, best_detections_idx] = sort(ratios, 'descend');
                end
            end

            aux_val = 1:length(ratios);

            [~, annotations_ranking] = sort(aux_val(best_detections_idx));

        end

        %     if( isfield(ECG_struct, 'corrected_anns' ) )
        %         AnnNames_idx = find(best_detections_idx == find(strcmp(AnnNames(:,1), 'corrected_anns') ));
        %         if( isfield(ECG_struct.corrected_anns, 'time' ) )
        %             anns_under_edition = unique(colvec(ECG_struct.corrected_anns.time));
        %         else
        %             anns_under_edition = unique(colvec(ECG_struct.corrected_anns));
        %         end
        %     else
        %         AnnNames_idx = 1;
        %         anns_under_edition = unique(round(colvec( ECG_struct.(AnnNames{AnnNames_idx,1}).(AnnNames{AnnNames_idx,2}) )));
        %     end

        AnnNames_idx = 1;

        if( isempty(AnnNames) )
            anns_under_edition = [];
        else
            aux_val = ECG_struct.(AnnNames{AnnNames_idx,1}).(AnnNames{AnnNames_idx,2});
            if( size(aux_val, 1) > 1 && size(aux_val, 2) > 1 )
                bSeries = true;
                [anns_under_edition, aux_idx] = unique(round(colvec( aux_val(:,1) )));
                all_annotations_selected_serie_location = {aux_val(aux_idx,1) + round(aux_val(aux_idx,2) * ECG_struct.header.freq) };
            else
                anns_under_edition = unique(round(colvec( aux_val )));
            end
        end

        all_annotations_selected = {anns_under_edition};

        Redraw();

        axes_hdl( RRserie_global_axes_k, 1:2) = [RRserie_global_axes_hdl, fig_hdl];
        axes_hdl( RRserie_axes_k, 1:2) = [RRserie_axes_hdl, fig_hdl];
        axes_hdl( RRserie_zoom_axes_k, 1:2) = [RRserie_zoom_axes_hdl, fig_hdl];

        set(annotation_list_control, 'Value', 1);
%         set(leads_control, 'Value', 1);

    end

    function update_q_ratios(obj,event_obj)

        calc_ratios();

        cant_anns = size(AnnNames,1);
        aux_str = repmat( ' - ',cant_anns,1);

        annotation_list_control = uicontrol( ...
                      'style','listbox', ...
                      'units','normalized', ...
                      'string', [ char(cellstr(num2str((1:cant_anns)'))) aux_str char(AnnNames(:,1)) repmat( ' (',cant_anns,1) num2str(round(colvec(ratios * 1000))) aux_str num2str(colvec(annotations_ranking))  repmat( ')',cant_anns,1)  ] , ...
                      'position', [0.865 0.11 0.13 0.18] , ...
                      'min', 2, ...
                      'max', 4, ...
                      'callback', @ChangeAnnotationsSelected);

    end

    function calc_ratios()

        this_AnnNames = [];

        for fname = rowvec(fieldnames(ECG_struct))
            if( isfield(ECG_struct.(fname{1}), 'time') )
                this_AnnNames = [this_AnnNames; cellstr(fname{1}) cellstr('time')];
            end
            if( isfield(ECG_struct.(fname{1}), 'qrs') )
                this_AnnNames = [this_AnnNames; cellstr(fname{1}) cellstr('qrs')];
            end
        end

        if( isempty(AnnNames) )
            new_AnnNames_idx = 1:size(this_AnnNames,1);
        else
            [~, new_AnnNames_idx] = setdiff(this_AnnNames(:,1), AnnNames(:,1) );
        end

        cant_anns = length(new_AnnNames_idx);

        aux_val = cell(cant_anns,1);
        jj = 1;
        for ii = rowvec(new_AnnNames_idx)
            aux_val{jj} = ECG_struct.(this_AnnNames{ii,1}).(this_AnnNames{ii,2});
            jj = jj + 1;
        end

        if( isempty(aux_val) )
            this_ratios = [];
            this_estimated_labs = [];
        else
        %     ratios = CalcRRserieQuality(ECG_struct.signal, ECG_struct.header, all_annotations);
            [ this_ratios, this_estimated_labs ] = CalcRRserieRatio(aux_val, ECG_struct.header);
        end

        all_annotations = [all_annotations; aux_val ];
        ratios = [ratios; this_ratios ];
        estimated_labs = [estimated_labs; this_estimated_labs];
        AnnNames = [AnnNames; this_AnnNames(new_AnnNames_idx,:)];

        [ratios, best_detections_idx] = sort(ratios, 'descend');

        aux_val = 1:length(ratios);

        [~, annotations_ranking] = sort(aux_val(best_detections_idx));

        AnnNames = AnnNames(best_detections_idx,:);
        all_annotations = all_annotations(best_detections_idx);
        estimated_labs = estimated_labs(best_detections_idx);

    end

    function Redraw()

        % update only the one that can be edited

        if( bSeries )
            aux_val = all_annotations_selected_serie_location{1};
            % update the series values
            aux_RR = (aux_val - anns_under_edition) / ECG_struct.header.freq;

            all_annotations_selected(1) = {anns_under_edition};

            this_all_anns = all_annotations_selected_serie_location;
            aux_val = this_all_anns{1};
            aux_val(serie_location_mask) = nan;
            this_all_anns{1} = aux_val;

            RR_idx(1) = { find( isnan(anns_under_edition) | anns_under_edition >= start_idx &  anns_under_edition <= end_idx ) } ;

        else

            if( length(anns_under_edition) < 2 )
                aux_RR = [];
                aux_RR_filt = [];
                this_all_anns = [];
            else
%                 aux_RR = colvec(diff(anns_under_edition));

                [aux_RR, aux_RR_filt ] = RR_calculation(anns_under_edition, ECG_struct.header.freq, RRserie_filt{1});
                aux_RR = aux_RR * 1/ECG_struct.header.freq;

                all_annotations_selected(1) = {anns_under_edition};
                this_all_anns = all_annotations_selected;
            end

            RR_idx(1) = { find( anns_under_edition >= start_idx &  anns_under_edition <= end_idx ) } ;

        end

        RRserie(1) = {aux_RR};
        RRserie_filt(1) = {aux_RR_filt};

        if( ~isempty(selected_hb_idx) )
            aux_val = anns_under_edition(anns_under_edition_idx(selected_hb_idx));
        end
%         aux_val1 = anns_under_edition(anns_under_edition_idx(hb_idx));

        anns_under_edition_idx = RR_idx{1};

        if( ~isempty(selected_hb_idx) )
            [~, selected_hb_idx] = intersect(anns_under_edition(anns_under_edition_idx), aux_val);
        end
%         hb_idx = find( aux_val1 == anns_under_edition(anns_under_edition_idx) );
%
%         if( isempty(hb_idx) )
%             hb_idx = 1;
%         end

        if( isempty(aux_RR) || all(isnan(aux_RR)) || isempty(anns_under_edition_idx) )
            limits = [0.6 0.7];
        else
            limits = prctile(aux_RR(anns_under_edition_idx), [5 97]);
        end

        aux_val = diff(limits);
        aux_val1 = max(0.01, 0.5*aux_val);

        aux_val = min(aux_RR(anns_under_edition_idx));
        if( isempty(aux_val) )
            limits(1) = limits(1) - aux_val1;
        else
            limits(1) = max(aux_val, limits(1) - aux_val1);
        end
        aux_val = max(aux_RR(anns_under_edition_idx));
        if( isempty(aux_val) )
            limits(2) = limits(2) + aux_val1;
        else
            limits(2) = min(aux_val, limits(2) + aux_val1);
        end

%         if( bLockScatter )
%             x_lims_scatter = get(Scatter_axes_hdl, 'Xlim');
%             y_lims_scatter = get(Scatter_axes_hdl, 'Ylim');
%         end

%         if( bLockRRserie )
%             x_lims_RRserie = get(RRserie_axes_hdl, 'Xlim');
%             y_lims_RRserie = get(RRserie_axes_hdl, 'Ylim');
%         end

%         figure(fig_hdl);

%         maximize(fig_hdl);
%         maximized_size = get(fig_hdl, 'Position');

%         set(fig_hdl, 'Position', [ maximized_size(3:4) maximized_size(3:4) ] .* [ 0.05 0.13 0.95 0.9] );

    %     set(fig_hdl, 'Toolbar', 'none');

        %% Axis de Poincar�

        if( isempty(Scatter_axes_hdl) )
            if(size_y_RR_global > 0 )
                Scatter_axes_hdl = axes('Position', ([0.55 0.41 0.355 0.52 ] - [ Xoffset Yoffset 0 0 ]) .* [ 1 1 Xscale Yscale ] - [0 0 0 size_y_RR_global], 'ColorOrder', ColorOrder, 'ButtonDownFcn',@inspect_scatter  ) ;
            else
                Scatter_axes_hdl = axes('Position', ([0.55 0.46 0.355 0.52 ] - [ Xoffset Yoffset 0 0 ]) .* [ 1 1 Xscale Yscale ], 'ColorOrder', ColorOrder, 'ButtonDownFcn',@inspect_scatter  ) ;
            end
        end
        aux_val_sc_op = get(Scatter_axes_hdl, 'OuterPosition');
        aux_val_sc = get(Scatter_axes_hdl, 'Position');

        cla(Scatter_axes_hdl)
        bRRempty = all(cellfun( @(a)(isempty(a)), RRserie));
        bRR_idxempty = all(cellfun( @(a)(isempty(a)), RR_idx));
        if( bRRempty || bRR_idxempty )
            RRscatter_hdl = {};
            hold(Scatter_axes_hdl, 'on')
        else
            hold(Scatter_axes_hdl, 'on')
            RRscatter_hdl = cellfun( @(this_rr_serie, this_rr_idx, ii)( plot(Scatter_axes_hdl, this_rr_serie(this_rr_idx) , [this_rr_serie(this_rr_idx(2:end)); this_rr_serie(this_rr_idx(end)) ], 'Marker', all_markers{ii}, 'LineStyle', 'none', 'MarkerEdgeColor', ColorOrder(ii,:), 'Color', ColorOrder(ii,:), 'ButtonDownFcn',@inspect_scatter )  ), RRserie, RR_idx, num2cell((1:length(RRserie))'), 'UniformOutput', false );
        end

        if( ~bRRempty && ~bRR_idxempty )
            aux_RR = RRserie{1};
            if( ~isempty(aux_RR) )
                aux_RR = aux_RR(anns_under_edition_idx);
                aux_RRnext = [aux_RR(2:end); aux_RR(end)];
                hold(Scatter_axes_hdl, 'on')
                RRscatter_selection_hdl = plot(Scatter_axes_hdl, aux_RR(selected_hb_idx), aux_RRnext(selected_hb_idx), 'xg', 'ButtonDownFcn',@inspect_scatter );
                plot(Scatter_axes_hdl, limits, limits, ':r', 'LineWidth', 0.5, 'ButtonDownFcn',@inspect_scatter );
                hold(Scatter_axes_hdl, 'off')
            end
        end

%         if( bLockScatter )
%             set(Scatter_axes_hdl, 'Xlim', x_lims_scatter);
%             set(Scatter_axes_hdl, 'Ylim', y_lims_scatter);
%         else
            set(Scatter_axes_hdl, 'Xlim', limits);
            set(Scatter_axes_hdl, 'Ylim', limits);
%     %         zoom reset
%         end

        title(Scatter_axes_hdl, ['Poincar� plot interval of ' Seconds2HMS((end_idx-start_idx+1)/ECG_struct.header.freq) ]);
        xlabel(Scatter_axes_hdl, 'Current value')
        ylabel(Scatter_axes_hdl, 'Next value')

        %% Axis de RR serie

        if( isempty(RRserie_axes_hdl) )
            RRserie_axes_hdl = axes('Position', [(aux_val_sc(1) - 0.375)/2 (aux_val_sc(2)+aux_val_sc(4)/2) 0.375 aux_val_sc(4)/2 ] , 'ColorOrder', ColorOrder, 'ButtonDownFcn',@inspect_RRserie  );
        end

        cla(RRserie_axes_hdl)
        if( isempty(aux_RR) )
            RRserie_hdl = {};
            hold(RRserie_axes_hdl, 'on')
        else
            hold(RRserie_axes_hdl, 'on')
            RRserie_hdl = cellfun( @(this_anns, this_rr_serie, this_rr_idx, ii)( plot(RRserie_axes_hdl, this_anns(this_rr_idx) , this_rr_serie(this_rr_idx), 'Marker', all_markers{ii}, 'LineStyle', ':', 'MarkerEdgeColor', ColorOrder(ii,:), 'Color', ColorOrder(ii,:), 'ButtonDownFcn',@inspect_RRserie )  ), all_annotations_selected, RRserie, RR_idx, num2cell((1:length(RRserie))'), 'UniformOutput', false );
        end

        if( ~isempty(aux_RR) )
            aux_RR = RRserie{1};
            RRserie_selection_hdl = plot(RRserie_axes_hdl, anns_under_edition(anns_under_edition_idx(selected_hb_idx)), aux_RR(anns_under_edition_idx(selected_hb_idx)), 'og' );
        end

        if( isempty(anns_under_edition) )
            axes_hdl( RRserie_axes_k, 3) = nan;
        else
            prev_units = get(RRserie_axes_hdl, 'Units');
            set(RRserie_axes_hdl, 'Units', 'pixels');
            this_pos = get(RRserie_axes_hdl, 'Position');
%             aux_val = (anns_under_edition(anns_under_edition_idx(end)) - anns_under_edition(anns_under_edition_idx(1))) / this_pos(3);
            aux_val = max_win_size_zoom / (this_pos(3) / 2);

            axes_hdl( RRserie_axes_k, 3) = aux_val;
            set(RRserie_axes_hdl, 'Units', prev_units);
        end

%         if( bLockRRserie )
%             xlim(RRserie_axes_hdl, x_lims_RRserie);
%             ylim(RRserie_axes_hdl, y_lims_RRserie);
%             this_xlims = x_lims_RRserie;
%             this_ylims = y_lims_RRserie;
%         else
            if( isempty(anns_under_edition(anns_under_edition_idx)) )
                x_max = 1;
                x_min = 0;
                this_ylims = [0.3 2];
            else
                ylim(RRserie_axes_hdl, limits);
                this_ylims = limits;
                x_max = max(anns_under_edition(anns_under_edition_idx));
                x_min = min(anns_under_edition(anns_under_edition_idx));
                x_range = x_max - x_min;
                xlim(RRserie_axes_hdl, [ x_min - 0.05 * x_range x_max + 0.05 * x_range ]);
            end
            this_xlims = [ x_min x_max ];
%         end

        % red box around
        this_xlims = this_xlims + 0.01*[ -diff(this_xlims) diff(this_xlims) ];
        this_ylims = this_ylims + 0.01*[ diff(this_ylims) -diff(this_ylims) ];
        set(fig_hdl,'CurrentAxes', RRserie_axes_hdl);
        aux_hdl = patch([this_xlims(1) this_xlims(1) this_xlims(2) this_xlims(2) this_xlims(1) ], [this_ylims(1) this_ylims(2) this_ylims(2) this_ylims(1) this_ylims(1)], [1 1 1], 'EdgeColor', [1 0 0], 'LineWidth', 1.5, 'ButtonDownFcn', @inspect_RRserie);
        set(aux_hdl, 'FaceColor', 'none')
        uistack(aux_hdl, 'bottom');
        hold(RRserie_axes_hdl, 'off')

        if( length(aux_RR) > 5 )
            cant_ticks = 5;
            aux_idx = unique(round(linspace(x_min, x_max, cant_ticks)));
            set(RRserie_axes_hdl, 'XTick', rowvec(aux_idx) );
            aux_str = cellstr(Seconds2HMS((aux_idx(1)+base_start_time-1)*1/ECG_struct.header.freq));
            aux_str = [aux_str; cellstr(Seconds2HMS((aux_idx(2:(end-1)))*1/ECG_struct.header.freq))];
            aux_str = [aux_str; cellstr(Seconds2HMS((aux_idx(end)+base_start_time-1)*1/ECG_struct.header.freq))];
            set(RRserie_axes_hdl, 'XTickLabel', char(aux_str) );
        end
%         xlabel(RRserie_axes_hdl, 'Time')
        ylabel(RRserie_axes_hdl, 'Serie value')

        title(RRserie_axes_hdl, [ 'Interval of ' Seconds2HMS((end_idx-start_idx+1)/ECG_struct.header.freq)  ]);

        %% Axis de RR serie ZOOM

        if( isempty(RRserie_zoom_axes_hdl) )
            RRserie_zoom_axes_hdl = axes('Position', [(aux_val_sc(1) - 0.375)/2  aux_val_sc(2) 0.375 aux_val_sc(4)/2.3 ], 'ColorOrder', ColorOrder );
        end

        aux_val_RR_zoom = get(RRserie_zoom_axes_hdl, 'Position');
        max_x_drag = aux_val_RR_zoom(1) + aux_val_RR_zoom(3);
        min_y_drag = aux_val_RR_zoom(2);
        aux_val_RR = get(RRserie_axes_hdl, 'Position');
        max_y_drag = aux_val_RR(2)+aux_val_RR(4);

        if( isempty(RRserie) || isempty(anns_under_edition_idx) )
            cla(RRserie_zoom_axes_hdl)
        else
            UpdateRRserieZoom();
        end

        %% Axis de RR serie global

        if( size_y_RR_global > 0 )

            if( isempty(RRserie_global_axes_hdl) )
                RRserie_global_axes_hdl = axes('Position', [aux_val_RR(1) aux_val_sc(2)+1.13*aux_val_sc(4) aux_val_sc(1)+aux_val_sc(3)-aux_val_RR(1) size_y_RR_global ], 'ColorOrder', ColorOrder, 'ButtonDownFcn', @ButtonDownCallbackDefault  );
            end

            set(fig_hdl, 'CurrentAxes', RRserie_global_axes_hdl);
            cla(RRserie_global_axes_hdl)

            if( isempty(aux_RR) )
                RRserie_hdl = [];
                hold(RRserie_global_axes_hdl, 'on')
            else
                hold(RRserie_global_axes_hdl, 'on')

                prev_units = get(RRserie_global_axes_hdl, 'Units');
                set(RRserie_global_axes_hdl, 'Units', 'pixels');

                % Downsample version: For efficient marks visualization and printing only
                target_res = 5; % samples/pixel

                axes_size = get(RRserie_global_axes_hdl, 'Position');
                nsamp_target = axes_size(3) * target_res;
                set(RRserie_global_axes_hdl, 'Units', prev_units);

                max_length = max(cellfun( @(this_rr_serie)( length(this_rr_serie)  ), RRserie ));

                down_factor = max(1, ceil( max_length / nsamp_target));

%                 RRserie_aux = cellfun( @(this_rr_serie)( resample(this_rr_serie, 1, down_factor, 60 )  ), RRserie, 'UniformOutput', false );
%                 cellfun( @(this_anns, this_rr_serie, ii)( plot(RRserie_global_axes_hdl, this_anns( round(linspace(1,length(this_anns),length(this_rr_serie))) )  , this_rr_serie, 'Marker', all_markers{ii}, 'LineStyle', ':', 'MarkerEdgeColor', ColorOrder(ii,:), 'Color', ColorOrder(ii,:), 'ButtonDownFcn', @ButtonDownCallbackDefault, 'ButtonUpFcn', @ButtonUpCallbackDefault )  ), all_annotations_selected, RRserie_aux, num2cell((1:length(RRserie))') );

                % downsample this way to deal with NaN values.
                not_nan_idx = cellfun( @(this_rr_serie)( ~isnan(this_rr_serie) ), RRserie, 'UniformOutput', false );
                RRserie_aux = cellfun( @(this_anns, this_rr_serie, this_non_nan_idx)( interp1(this_anns(this_non_nan_idx), this_rr_serie(this_non_nan_idx), this_anns( round(linspace(1,length(this_anns), ceil(sum(this_non_nan_idx)/down_factor) ))), 'pchip')  ), all_annotations_selected, RRserie, not_nan_idx, 'UniformOutput', false );
                cellfun( @(this_anns, this_rr_serie, ii)( plot(RRserie_global_axes_hdl, this_anns( round(linspace(1,length(this_anns),length(this_rr_serie))) )  , this_rr_serie, 'Marker', all_markers{ii}, 'LineStyle', ':', 'MarkerEdgeColor', ColorOrder(ii,:), 'Color', ColorOrder(ii,:), 'ButtonDownFcn', @ButtonDownCallbackDefault)  ), all_annotations_selected, RRserie_aux, num2cell((1:length(RRserie))') );

%                 limits = prctile(aux_RR, [1 99]);
                ylim(RRserie_global_axes_hdl, limits);

%                 RRserie_zoombars_hdl = plot(RRserie_global_axes_hdl, repmat([ start_idx end_idx], 2, 1), repmat(limits,2,1)', 'LineWidth', 3, 'Color', 'r', 'ButtonDownFcn', @ButtonDownCallbackDefault, 'ButtonUpFcn', @ButtonUpCallbackDefault );
                RRserie_zoombars_hdl = patch([start_idx start_idx end_idx end_idx start_idx ], [limits(1) limits(2) limits(2) limits(1) limits(1)], [241 183 171]/255, 'EdgeColor', [1 0 0], 'ButtonDownFcn', @ButtonDownCallbackDefault , 'LineWidth', 0.5);
                uistack(RRserie_zoombars_hdl, 'bottom');

                hold(RRserie_global_axes_hdl, 'off')

                max_end = max(cellfun( @(this_ann)( this_ann(end)  ), all_annotations_selected ));
                min_start = min(cellfun( @(this_ann)( this_ann(1)  ), all_annotations_selected ));
                max_range = max_end - min_start;

                xlim(RRserie_global_axes_hdl, [ min_start - 0.02*max_range max_end + 0.02*max_range ]);

                % store scale constant
%                 axes_hdl( RRserie_global_axes_k, 3) = (anns_under_edition(end) - anns_under_edition(1)) / axes_size(3);
                axes_hdl( RRserie_global_axes_k, 3) = max_win_size / (axes_size(3) / 2);

                if( length(aux_RR) > 5 )
                    cant_ticks = 8;

                    [~, major_tick_idx] = sort( abs(((anns_under_edition(end)-anns_under_edition(1))./major_tick_values_time - cant_ticks)));
                    major_tick = major_tick_values_time(major_tick_idx(1));

                    aux_idx = round(1:major_tick:anns_under_edition(end));
                    set(RRserie_global_axes_hdl, 'XTick', rowvec(aux_idx) );
                    aux_str = cellstr(Seconds2HMS((aux_idx(1)+base_start_time-1)*1/ECG_struct.header.freq));
                    aux_str = [aux_str; cellstr(Seconds2HMS((aux_idx(2:(end-1)))*1/ECG_struct.header.freq))];
                    aux_str = [aux_str; cellstr(Seconds2HMS((aux_idx(end)+base_start_time-1)*1/ECG_struct.header.freq))];
                    set(RRserie_global_axes_hdl, 'XTickLabel', char(aux_str) );
                end
%                 xlabel(RRserie_global_axes_hdl, 'Time')
                ylabel(RRserie_global_axes_hdl, 'Serie value')

                title(RRserie_global_axes_hdl, [ 'Interval of ' Seconds2HMS(ECG_struct.header.nsamp/ECG_struct.header.freq) ]);

            end

        end

        %% Axis de ECG

        if( isempty(ECG_axes_hdl) )
            if(size_y_RR_global > 0 )
                ECG_axes_hdl = axes('Position', [aux_val_RR_zoom(1) 0.07*aux_val_RR_zoom(2) aux_val_sc(1)+aux_val_sc(3)-aux_val_RR_zoom(1) 0.75*aux_val_RR_zoom(2)], 'ColorOrder', ColorOrder  );
            else
                ECG_axes_hdl = axes('Position', [aux_val_RR_zoom(1) 0.07*aux_val_RR_zoom(2) aux_val_sc(1)+aux_val_sc(3)-aux_val_RR_zoom(1) 0.75*aux_val_RR_zoom(2)], 'ColorOrder', ColorOrder  );
            end
        end

        if( ~bLockECG )
            ECG_limits = [];
        end

        if( isempty(anns_under_edition_idx) )
            [ECG_hdl, ECG_limits ] = plot_ecg_heartbeat(ECG_struct.signal, lead_idx, this_all_anns, start_idx, [] , hb_detail_window, ECG_struct.header, filtro, ECG_axes_hdl, ECG_limits);
        else
            [ECG_hdl, ECG_limits ] = plot_ecg_heartbeat(ECG_struct.signal, lead_idx, this_all_anns, start_idx, anns_under_edition_idx(hb_idx) , hb_detail_window, ECG_struct.header, filtro, ECG_axes_hdl, ECG_limits);
        end

        if( length(lead_idx) > 1 )
            aux_str = rowvec(colvec([repmat(',', length(lead_idx), 1) ECG_struct.header.desc(lead_idx,:) ]'));
            title(ECG_axes_hdl, ['Heartbeat ' num2str(hb_idx) ' : Leads ' aux_str(2:end) ] )
        else
            title(ECG_axes_hdl, ['Heartbeat ' num2str(hb_idx) ' : Lead ' ECG_struct.header.desc(lead_idx,:)] )
        end

%         xlabel(ECG_axes_hdl, 'Sample #')
        ylabel(ECG_axes_hdl, 'ECG')
    %     zoom reset

        %% Controls

        if( isempty(annotation_list_control) || bFirstLoad )

            bFirstLoad = false;

            %% Recording list

            aux_str = repmat( ' - ', length(recording_indexes),1);

%             recordings_control = uicontrol( ...
%                           'style','listbox', ...
%                           'units','normalized', ...
%                           'string', [ char(cellstr(num2str(colvec(recording_indexes)))) aux_str num2str(round(recording_ratios*1000)) aux_str char(rec_names.name) ] , ...
%                           'position', [0.865 0.75 0.13 0.2] , ...
%                           'min', 1, ...
%                           'max', 1, ...
%                           'Value', rec_idx, ...
%                           'callback', @ChangeRecordingSelected);
%
%             uicontrol( ...
%                           'style','text', ...
%                           'string', 'Available Recordings', ...
%                           'units','normalized', ...
%                           'position', [0.865 0.96 0.13 0.025] );

            %% Signal list
            leads_control = uicontrol( ...
                          'style','listbox', ...
                          'units','normalized', ...
                          'string', [ char(cellstr(num2str((1:ECG_struct.header.nsig)'))) repmat( ' - ',ECG_struct.header.nsig,1) ECG_struct.header.desc ] , ...
                          'position', [0.865 0.65 0.13 0.3] , ...
                          'min', 2, ...
                          'max', 4, ...
                          'Value', lead_idx, ...
                          'callback', @ChangeLeadsSelected);

            uicontrol( ...
                          'style','text', ...
                          'string', 'Available signals', ...
                          'units','normalized', ...
                          'position', [0.865 0.96 0.13 0.025] );

            %% Annotation list

            if( isempty(AnnNames) )
                aux_str = 'manually_created';
                aux_label_str = 'Annotation under edition: manually-created (NaN)';
                AnnNames = [ {aux_str} {'time'} ];
                ECG_struct.(aux_str).time = [];

            else
                cant_anns = size(AnnNames,1);

                aux_str = repmat( ' - ',cant_anns,1);

                aux_str = [ char(cellstr(num2str((1:cant_anns)'))) aux_str char(AnnNames(:,1)) repmat( ' (',cant_anns,1) num2str(round(colvec(ratios * 1000))) aux_str num2str(colvec(annotations_ranking))  repmat( ')',cant_anns,1)  ];

                aux_label_str = [ 'Annotation under edition: ' char(AnnNames( AnnNames_idx ,1)) ' (' num2str(ratios(AnnNames_idx)) ')' ];

            end

            annotation_list_control = uicontrol( ...
                          'style','listbox', ...
                          'units','normalized', ...
                          'string', aux_str, ...
                          'position', [0.865 0.11 0.13 0.4] , ...
                          'min', 2, ...
                          'max', 4, ...
                          'callback', @ChangeAnnotationsSelected);

            uicontrol( ...
                          'style','text', ...
                          'string', 'Annotations available', ...
                          'units','normalized', ...
                          'position', [0.865 0.52 0.13 0.025] );

            annotation_under_edition_label = uicontrol( ...
                          'style','text', ...
                          'string', aux_label_str, ...
                          'units','normalized', ...
                          'position', [0.865 0.57 0.13 0.05] );

            uicontrol( ...
                            'style','pushbutton', ...
                            'string', 'Delete Annotations', ...
                            'units','normalized', ...
                            'position', [0.865 0.07 0.063 0.03], ...
                            'callback', @DeleteAnnotations);

            uicontrol( ...
                            'style','pushbutton', ...
                            'string', 'Upd Q ratios', ...
                            'units','normalized', ...
                            'position', [0.93 0.07 0.063 0.03], ...
                            'callback', @update_q_ratios);

            uicontrol( ...
                            'style','pushbutton', ...
                            'string', 'Merge Annotations', ...
                            'units','normalized', ...
                            'position', [0.865 0.04 0.063 0.03], ...
                            'callback', @MergeAnnotations);

            uicontrol( ...
                            'style','pushbutton', ...
                            'string', 'Export Annotations', ...
                            'units','normalized', ...
                            'position', [0.93 0.04 0.063 0.03], ...
                            'callback', @ExportAnnotations);

        end

%         if( ~isempty(RRscatter_hdl) )
%             set(RRscatter_hdl,'ButtonDownFcn',@inspect_scatter);
%         end
%         set(Scatter_axes_hdl,'ButtonDownFcn',@inspect_scatter);

%         if( ~isempty(RRserie_hdl) )
%             set(RRserie_hdl, 'ButtonDownFcn',@inspect_RRserie);
%         end

%         set(RRserie_axes_hdl,'ButtonDownFcn',@inspect_RRserie);

        cellfun(@(a)( set(a,'ButtonDownFcn',@inspect_ECG)), ECG_hdl);
        set(ECG_axes_hdl,'ButtonDownFcn',@inspect_ECG);

    end

% Obsolete
%
%     function DragMouseBegin()
%         %DragMouseBegin begin draging
%
%         if ( ~fIsDragAllowed )
%
%             [drag_start_x, drag_start_y] = GetCursorCoordOnWindow();
%
%             fIsDragAllowed = true;
%             PrevStateWindowButtonMotionFcn = get(fig_hdl, 'WindowButtonMotionFcn');
%             set(fig_hdl, 'WindowButtonMotionFcn', @WindowButtonMotionCallback2D);
%
% %             fprintf(1, 'on\n');
%
%         end
%     end
%
%     function DragMouseEnd()
%         %DragMouseEnd end draging
%
%         if fIsDragAllowed
%             fIsDragAllowed = false;
%
%
%             ECG_struct.signal = ECG_w.read_signal(start_idx, end_idx + 10 * ECG_struct.header.freq );
%
% %             hb_idx = 1;
%
%             Redraw();
%
%             set(fig_hdl, 'WindowButtonMotionFcn', PrevStateWindowButtonMotionFcn);
%
% %             fprintf(1, 'off\n');
%
% %             if ( ~fIsDragTimeAllowed )
% %
% % esto lo comenté porque generaba una doble entrada a      plot_ecg_heartbeat que no entendí para que estaba puesto
% %
% %                 if( bSeries )
% %                     this_all_anns = all_annotations_selected_serie_location;
% %                     aux_val = this_all_anns{1};
% %                     aux_val(serie_location_mask) = nan;
% %                     this_all_anns{1} = aux_val;
% %                 else
% %                     this_all_anns = all_annotations_selected;
% %                 end
% %
% %                 if( ~bLockECG )
% %                     ECG_limits = [];
% %                 end
% %
% %                 [ECG_hdl, ECG_limits ] = plot_ecg_heartbeat(ECG_struct.signal, lead_idx, this_all_anns, start_idx, anns_under_edition_idx(hb_idx) , hb_detail_window, ECG_struct.header, filtro, ECG_axes_hdl, ECG_limits);
% %
% %                 cellfun(@(a)( set(a,'ButtonDownFcn',@inspect_ECG)), ECG_hdl);
% %
% %             end
%         end
%     end
%

    function [xp, yp ] = GetCursorCoordOnWindow()
        %GetCursorCoordOnWindow

        this_fig_hdl = gcf;

        dfltUnits = get(this_fig_hdl, 'Units');

        set(this_fig_hdl, 'Units', 'pixels');

        crd = get(this_fig_hdl, 'CurrentPoint');
        xp = crd(1);
        yp = crd(2);

        set(this_fig_hdl, 'Units', dfltUnits);
    end

    function ProcessDrag()

        % RR serie part
        if( fIsDragAllowed && axes_hdl_selector_idx == RRserie_axes_k )

            [drag_x, drag_y] = GetCursorCoordOnWindow();

            deltax = drag_x - drag_start_x;

            if( bChangeWin )

                if( isnan(prev_val_drag) )
                    prev_val_drag = win_size_zoom;
                end

                win_size_zoom = min(max_win_size_zoom, max( min_win_size_zoom, prev_val_drag + ( deltax * axes_hdl( RRserie_axes_k, 3) ) ));

%                 set(RRserie_zoombars_hdl, 'Xdata', [start_idx start_idx end_idx end_idx start_idx ]);

                update_title_efimero( sprintf('%s', Seconds2HMS(win_size_zoom)), 5 );
%                 update_title_efimero( num2str(deltax) );

                UpdateRRserieZoom();

            else

                point = get(axes_hdl( RRserie_axes_k, 1), 'CurrentPoint');
                this_x_units = point(1,1);

                [~, aux_val] = sort( abs( this_x_units - anns_under_edition(anns_under_edition_idx)) );
                aux_val = aux_val(1);

                hb_idx = max(1, min(length(anns_under_edition_idx), aux_val ));

    %             disp(hb_idx)

                UpdateRRserieZoom();

%                 if( ishandle(RRserie_hb_idx_hdl) )
%                     delete(RRserie_hb_idx_hdl);
%                 end
                aux_RR = RRserie{1};

%                 hold(RRserie_axes_hdl, 'on')
%                 RRserie_hb_idx_hdl = plot(RRserie_axes_hdl, anns_under_edition(anns_under_edition_idx(hb_idx)), aux_RR(anns_under_edition_idx(hb_idx)), 'or' );
%                 hold( RRserie_axes_hdl, 'off')

                set(RRserie_hb_idx_hdl, 'Xdata', anns_under_edition(anns_under_edition_idx(hb_idx)) );
                set(RRserie_hb_idx_hdl, 'Ydata', aux_RR(anns_under_edition_idx(hb_idx)) );

%                 [ECG_hdl, ECG_limits ] = plot_ecg_heartbeat(ECG_struct.signal, lead_idx, all_annotations_selected, start_idx, anns_under_edition_idx(hb_idx) , hb_detail_window, ECG_struct.header, filtro, ECG_axes_hdl);

            end

        % RR global part
        elseif( fIsDragAllowed && axes_hdl_selector_idx ==  RRserie_global_axes_k )

            if( bChangeWin )

                [drag_x, drag_y] = GetCursorCoordOnWindow();

                deltax = drag_x - drag_start_x;

                if( isnan(prev_val_drag) )
                    prev_val_drag = win_size;
                end

                win_size = min(max_win_size, max( min_win_size, prev_val_drag + ( deltax * axes_hdl( RRserie_global_axes_k, 3) ) ));

                update_title_efimero( sprintf('%s', Seconds2HMS(win_size*60)), 5);
            else
                point = get(axes_hdl( RRserie_global_axes_k, 1), 'CurrentPoint');
                point = point(1,1);

                start_idx = max(1, min( ECG_struct.header.nsamp - (min_win_size * 60 * ECG_struct.header.freq), round(point) ) );
            end

            end_idx = max((min_win_size * 60 * ECG_struct.header.freq), min( ECG_struct.header.nsamp, start_idx + round((win_size * 60)*ECG_struct.header.freq)));

%             update_title_efimero( sprintf('%s', Seconds2HMS(start_idx / ECG_struct.header.freq) ), 5);

%             aux_val = round(point(1));
%             if( aux_val < start_idx || aux_val > end_idx )
%                 update_title_efimero('Annotation out of red box bounds', 5 );
%                 return
%             end

            set(RRserie_zoombars_hdl, 'Xdata', [start_idx start_idx end_idx end_idx start_idx ]);

            aux_idx = get(RRserie_axes_hdl, 'XTick' );
            aux_str = repmat({''},length(aux_idx),1);
            aux_str(1) = {Seconds2HMS((start_idx+base_start_time-1)*1/ECG_struct.header.freq)};
            aux_str(end) = {Seconds2HMS((end_idx+base_start_time-1)*1/ECG_struct.header.freq)};
            set(RRserie_axes_hdl, 'XTickLabel', char(aux_str) );

        % RR global Pattern Match part
        elseif( fIsDragAllowed && axes_hdl_selector_idx ==  RR_global_PM_k )

            [drag_x, drag_y] = GetCursorCoordOnWindow();

            deltax = drag_x - drag_start_x;

            if( bChangeWin )

                if( isnan(prev_val_drag) )
                    prev_val_drag = win_size_PM;
                end

                win_size_PM = max( min_win_size_PM, prev_val_drag + ( deltax * axes_hdl( RR_global_PM_k, 3) ) );

                update_title_efimero( sprintf('%s', Seconds2HMS(win_size_PM*60)), 5);
            else
                point = get(axes_hdl( RR_global_PM_k, 1), 'CurrentPoint');
                point = point(1,1);

                start_idx_PM = max(1, min( ECG_struct.header.nsamp - (win_size_PM * 60 * ECG_struct.header.freq), round(point) ) );
            end

            end_idx_PM = max((min_win_size * 60 * ECG_struct.header.freq), min( ECG_struct.header.nsamp, start_idx_PM + round((win_size_PM * 60)*ECG_struct.header.freq)));

            set(RR_global_PM_patch_hdl, 'Xdata', [start_idx_PM start_idx_PM end_idx_PM end_idx_PM start_idx_PM ]);

        % Proximity Pattern Match
        elseif( fIsDragAllowed && axes_hdl_selector_idx ==  proximity_k )

            [drag_x, drag_y] = GetCursorCoordOnWindow();

            deltax = drag_x - drag_start_x;

            if( isnan(prev_val_drag) )
                prev_val_drag = proximity_thr_PM;
            end

            proximity_thr_PM = min(max_proximity_win_size, max( min_proximity_win_size, prev_val_drag + ( deltax * axes_hdl( proximity_k, 3) ) ));

%                 set(RRserie_zoombars_hdl, 'Xdata', [start_idx start_idx end_idx end_idx start_idx ]);

%             update_title_efimero( sprintf('%s', Seconds2HMS(proximity_thr_PM, 1)), 5 );

            dt_samp = round(proximity_thr_PM*ECG_struct.header.freq/ndown_similarity);

            aux_val = get(proximity_patch_hdl, 'Xdata');
            set(proximity_patch_hdl, 'Xdata', [aux_val(1) aux_val(1) repmat(dt_samp + aux_val(1),1,2) aux_val(1) ]);

            aux_lims = [ 1 round(1.2 * (dt_samp + aux_val(1))) ];

            xlim(proximity_hdl, aux_lims )

            aux_Xtick = round(linspace(aux_val(1), dt_samp + aux_val(1), 4));

            set(proximity_hdl, 'Xtick', aux_Xtick);
            set(proximity_hdl, 'XtickLabel', Seconds2HMS((aux_Xtick-aux_val(1))*ndown_similarity/ECG_struct.header.freq,1));

        elseif( fIsDragAllowed && axes_hdl_selector_idx ==  pattMatch_hdl_k )

            point = get(pattMatch_hdl, 'CurrentPoint');

            point = point(1,1);

            aux_val = get(pattMatch_patch_hdl, 'Xdata');

            aux_val1 = abs( aux_val - point );

            if( aux_val1(1) > aux_val1(3) )
                start_val = aux_val(1);
%                 end_val  = min(start_val + round(max_pattern_match_win_size*ECG_struct.header.freq), max( start_val + round(min_pattern_match_win_size*ECG_struct.header.freq), point ) );
                end_val  = point;
            else
                end_val = aux_val(3);
%                 start_val  = min(end_val - round(max_pattern_match_win_size*ECG_struct.header.freq), max( end_val - round(min_pattern_match_win_size*ECG_struct.header.freq), point ) );
                start_val  = round(point);
            end

            set(pattMatch_patch_hdl, 'Xdata', [start_val start_val end_val end_val start_val ]);

            pattern_match_xlims = [start_val end_val];

            update_title_efimero( sprintf('%s', Seconds2HMS(abs(diff(pattern_match_xlims / ECG_struct.header.freq)), 3)), 5 );

        end

    end

    function WindowButtonMotionCallback2D(src, evnt)  %#ok
        %WindowButtonMotionCallback2D

        ProcessDrag();

    end

    function inspect_scatter(obj,event_obj)

        if( strcmp(get(fig_hdl,'SelectionType'),'alt'))
            % Delete annotation

            aux_RR = RRserie{1};
            aux_RR = aux_RR(anns_under_edition_idx);

            point = get(gca,'CurrentPoint');

            [~, hb_idx] = min(sum( bsxfun(@minus, point(1,1:2), [aux_RR, [aux_RR(2:end); aux_RR(end)]]).^2,2));

            PushUndoAction();

            if( bSeries )
                anns_under_edition(hb_idx) = nan;
            else
                anns_under_edition(hb_idx) = [];
                aux_rr_filt = RRserie_filt{1};
                aux_rr_filt(hb_idx) = [];
                RRserie_filt{1} = aux_rr_filt;

            end

            selected_hb_idx = [];

            if(~bAnnsEdited)
                update_annotations();
            end

            Redraw();

            bAnnsEdited = true;
            bRecEdited = true;

        else

            if (strcmp(get(fig_hdl,'SelectionType'),'extend'))
                point1 = get(gca,'CurrentPoint');    % button down detected
                rbbox;
                point2 = get(gca,'CurrentPoint');    % button up detected

                if( ~isempty(selected_hb_idx) )
                    delete(RRserie_selection_hdl)
                    delete(RRscatter_selection_hdl)
                end

                xlims = sort([ point1(1,1) point2(1,1) ]);
                ylims = sort([ point1(1,2) point2(1,2) ]);
                aux_RRcurr = RRserie{1};
                aux_RRcurr = aux_RRcurr(anns_under_edition_idx);
                aux_RRnext = [aux_RRcurr(2:end); aux_RRcurr(end)];
                selected_hb_idx = find( aux_RRcurr > xlims(1) & aux_RRcurr < xlims(2) & aux_RRnext > ylims(1) & aux_RRnext < ylims(2) );

                update_title_efimero([num2str(length(selected_hb_idx)) ' heartbeats selected.'], 5 );

                hold(Scatter_axes_hdl, 'on')
                RRnext = [RRserie(2:end); RRserie(end)];
                RRscatter_selection_hdl = plot(Scatter_axes_hdl, aux_RRcurr((selected_hb_idx)), aux_RRnext((selected_hb_idx)), 'xg' );
                hold(Scatter_axes_hdl, 'off')

                hold(RRserie_axes_hdl, 'on')
                RRserie_selection_hdl = plot(RRserie_axes_hdl, anns_under_edition(anns_under_edition_idx(selected_hb_idx)) , aux_RRcurr(selected_hb_idx), 'og' );
                hold(RRserie_axes_hdl, 'off')

                min_hb_idx = min(selected_hb_idx);
                max_hb_idx = max(selected_hb_idx);
                cant_hb_idx = max(selected_hb_idx) - min_hb_idx + 1;

                if( (anns_under_edition(anns_under_edition_idx(max_hb_idx)) - anns_under_edition(anns_under_edition_idx(min_hb_idx))) <= (10*ECG_struct.header.freq) )

                    if( bSeries )
                        this_all_anns = all_annotations_selected_serie_location;
                        aux_val = this_all_anns{1};
                        aux_val(serie_location_mask) = nan;
                        this_all_anns{1} = aux_val;
                    else
                        this_all_anns = all_annotations_selected;
                    end

                    if( ~bLockECG )
                        ECG_limits = [];
                    end

                    [ECG_hdl, ECG_limits ] = plot_ecg_heartbeat(ECG_struct.signal, lead_idx, this_all_anns, start_idx, anns_under_edition_idx(hb_idx) , hb_detail_window, ECG_struct.header, filtro, ECG_axes_hdl, ECG_limits);
                    cellfun(@(a)( set(a,'ButtonDownFcn',@inspect_ECG)), ECG_hdl);
                end

                if( length(lead_idx) > 1 )
                    aux_str = rowvec(colvec([repmat(',', length(lead_idx), 1) ECG_struct.header.desc(lead_idx,:) ]'));
                    title(ECG_axes_hdl, ['Heartbeat ' num2str(hb_idx) ' : Leads ' aux_str(2:end) ] )
                else
                    title(ECG_axes_hdl, ['Heartbeat ' num2str(min_hb_idx) ' : Lead ' ECG_struct.header.desc(lead_idx,:)] )
                end

    %             zoom reset

                set(ECG_axes_hdl,'ButtonDownFcn',@inspect_ECG);

                % Zoom RR serie
                UpdateRRserieZoom();

            else
                % Show ECG
                point = get(gca,'CurrentPoint');

                if( ishandle(RRscatter_hb_idx_hdl) )
                    delete(RRscatter_hb_idx_hdl)
                end
                if( ishandle(RRserie_hb_idx_hdl) )
                    delete(RRserie_hb_idx_hdl)
                end

                aux_RRcurr = RRserie{1};
                aux_RRcurr = aux_RRcurr(anns_under_edition_idx);

                [~, hb_idx] = min(sum( bsxfun(@minus, point(1,1:2), [aux_RRcurr(1:end-1), aux_RRcurr(2:end)]).^2,2));

                hold(Scatter_axes_hdl, 'on')
                RRscatter_hb_idx_hdl = plot(Scatter_axes_hdl, aux_RRcurr(hb_idx), aux_RRcurr(hb_idx+1), 'or' );
                hold(Scatter_axes_hdl, 'off')

                hold(RRserie_axes_hdl, 'on')
                RRserie_hb_idx_hdl = plot(RRserie_axes_hdl, anns_under_edition(anns_under_edition_idx(hb_idx)) , aux_RRcurr(hb_idx), 'or' );
                hold(RRserie_axes_hdl, 'off')

                if( bSeries )
                    this_all_anns = all_annotations_selected_serie_location;
                    aux_val = this_all_anns{1};
                    aux_val(serie_location_mask) = nan;
                    this_all_anns{1} = aux_val;
                else
                    this_all_anns = all_annotations_selected;
                end

                if( ~bLockECG )
                    ECG_limits = [];
                end

                [ECG_hdl, ECG_limits ] = plot_ecg_heartbeat(ECG_struct.signal, lead_idx, this_all_anns, start_idx, anns_under_edition_idx(hb_idx) , hb_detail_window, ECG_struct.header, filtro, ECG_axes_hdl, ECG_limits);

                if( length(lead_idx) > 1 )
                    aux_str = rowvec(colvec([repmat(',', length(lead_idx), 1) ECG_struct.header.desc(lead_idx,:) ]'));
                    title(ECG_axes_hdl, ['Heartbeat ' num2str(hb_idx) ' : Leads ' aux_str(2:end) ] )
                else
                    title(ECG_axes_hdl, ['Heartbeat ' num2str(hb_idx) ' : Lead ' ECG_struct.header.desc(lead_idx,:)] )
                end

    %             zoom reset

                cellfun(@(a)( set(a,'ButtonDownFcn',@inspect_ECG)), ECG_hdl);

                set(ECG_axes_hdl,'ButtonDownFcn',@inspect_ECG);

                % Zoom RR serie
                UpdateRRserieZoom();

            end

        end

    end

    function inspect_ECG(obj,event_obj)

    %     disp(get(fig_hdl,'SelectionType'))

        if (strcmp(get(fig_hdl,'SelectionType'),'alt'))
            % Delete annotation

            point = get(gca,'CurrentPoint');

            point(1) = point(1) + start_idx - 1;

            [~, hb_idx] = min(abs( point(1) - anns_under_edition(anns_under_edition_idx)));

            PushUndoAction();

            if( bSeries )
                serie_location_mask(anns_under_edition_idx(hb_idx)) = true;
            else
                anns_under_edition(anns_under_edition_idx(hb_idx)) = [];
                aux_rr_filt = RRserie_filt{1};
                aux_rr_filt(anns_under_edition_idx(hb_idx)) = [];
                RRserie_filt{1} = aux_rr_filt;
            end

            selected_hb_idx( selected_hb_idx > length(anns_under_edition_idx) | selected_hb_idx == hb_idx ) = [];

            if( isempty(anns_under_edition) )
                hb_idx = [];
            else
                hb_idx = max(1, hb_idx - 1);
            end

            if(~bAnnsEdited)
                update_annotations();
            end

            Redraw();

            bAnnsEdited = true;
            bRecEdited = true;

        elseif (strcmp(get(fig_hdl,'SelectionType'),'normal'))

            % Show ECG

            point = get(gca,'CurrentPoint');

            point(1) = point(1) + start_idx - 1;

            PushUndoAction();

            if( bSeries )
                % only modify the location, not adding allowed.
                aux_val = all_annotations_selected_serie_location{1};

                [~, hb_idx] = min(abs( point(1) - aux_val(anns_under_edition_idx)));

                % refine the point, and enable it.
                aux_val(anns_under_edition_idx(hb_idx)) = round(point(1));
                serie_location_mask(anns_under_edition_idx(hb_idx)) = false;

                all_annotations_selected_serie_location{1} = aux_val;

            else
                % add a regular event when the anns are not series.
                aux_val = round(point(1));
                if( aux_val < start_idx || aux_val > end_idx )
                    update_title_efimero('Annotation out of red box bounds', 5 );
                    return
                end
                anns_under_edition = sort([anns_under_edition; aux_val ]);
                anns_under_edition_idx = find( anns_under_edition >= start_idx &  anns_under_edition <= end_idx );
                selected_hb_idx = find(aux_val == anns_under_edition(anns_under_edition_idx), 1);
                hb_idx = selected_hb_idx;
                aux_rr_filt = RRserie_filt{1};
                aux_rr_filt = aux_rr_filt([1:hb_idx hb_idx:end]);
                RRserie_filt{1} = aux_rr_filt;

            end

            if(~bAnnsEdited)
                update_annotations();
            end

            Redraw();

            bAnnsEdited = true;
            bRecEdited = true;

        elseif (strcmp(get(fig_hdl,'SelectionType'),'extend'))

            % Show ECG

            point = get(gca,'CurrentPoint');
            aux_val = round(point(1));

            aux_val = aux_val + start_idx - 1;

            if( isempty(side_plot_hdl) || ~ishandle(side_plot_hdl) )
                side_plot_hdl = figure();
                set(side_plot_hdl, 'Position', [ maximized_size(3:4) maximized_size(3:4) ] .* [ 0 0 0.95 0.9] );
            else
                figure(side_plot_hdl);
            end

            aux_val2 = (anns_under_edition - start_idx + 1);
            aux_val2 = aux_val2(aux_val2 > 0);

            plot_ecg_strip(ECG_struct.signal, ...
                            'ECG_header', ECG_struct.header, ...
                            'QRS_locations', aux_val2, ...
                            'Start_time', max(0, (aux_val - start_idx + 1)/ECG_struct.header.freq - win_size_zoom/2 -  1) , ...
                            'Figure_handle', side_plot_hdl , ...
                            'End_time', min(ECG_struct.header.nsamp, (aux_val - start_idx + 1)/ECG_struct.header.freq + win_size_zoom/2 + 1) );

            side_plot_hdl = gcf();

            figure(fig_hdl);

        end

    end

    function KeyPress(obj,event_obj)

        if (strcmp(event_obj.Key,'c') && strcmp(event_obj.Modifier,'control'))
            % copy selection
            if( ~isempty(selected_hb_idx) )
                copy_paste_buffer = anns_under_edition(selected_hb_idx);
                update_title_efimero('Selection copied', 5 );

            end

        elseif (strcmp(event_obj.Key,'v') && strcmp(event_obj.Modifier,'control'))
            % paste selection
            if( ~isempty(copy_paste_buffer) )

                PushUndoAction();
                anns_under_edition = sort( unique([anns_under_edition; colvec(copy_paste_buffer) ]) );
                selected_hb_idx = [];
                RRserie_filt = {[]};

                if(~bAnnsEdited)
                    update_annotations();
                end

                Redraw();

                bAnnsEdited = true;
                bRecEdited = true;

            end

        elseif (strcmp(event_obj.Key,'delete'))
            % delete selection
            if( ~isempty(selected_hb_idx) )
                PushUndoAction();

                aux_idx = [find(anns_under_edition < anns_under_edition(anns_under_edition_idx(selected_hb_idx(1))),1, 'last') find( anns_under_edition > anns_under_edition(anns_under_edition_idx(selected_hb_idx(end))), 1, 'first') ];

                if( isempty(aux_idx) )
                    aux_idx = 1;
                else
                    aux_idx = aux_idx(1);
                end

                aux_val = anns_under_edition(aux_idx);

                if( bSeries )
                    anns_under_edition(anns_under_edition_idx(selected_hb_idx)) = nan;
                else
                    anns_under_edition(anns_under_edition_idx(selected_hb_idx)) = [];
                end

                anns_under_edition_idx = find( anns_under_edition >= start_idx &  anns_under_edition <= end_idx );
                hb_idx = find(anns_under_edition(anns_under_edition_idx) == aux_val);
                selected_hb_idx = [];

                aux_rr_filt = RRserie_filt{1};
                aux_rr_filt(anns_under_edition_idx(selected_hb_idx)) = [];
                RRserie_filt{1} = aux_rr_filt;

                if(~bAnnsEdited)
                    update_annotations();
                end

                Redraw();

                bAnnsEdited = true;
                bRecEdited = true;

            end

        elseif (strcmp(event_obj.Key,'y') && ~isempty(event_obj.Modifier) && strcmp(event_obj.Modifier,'control'))
            % redo last change
            if( undo_buffer_idx < length(undo_buffer) )
                undo_buffer_idx = undo_buffer_idx + 1;
                anns_under_edition = undo_buffer{undo_buffer_idx};
                selected_hb_idx = [];
                RRserie_filt = {[]};
                Redraw();
            end

        elseif (strcmp(event_obj.Key,'z') && strcmp(event_obj.Modifier,'control'))
            % undo last change
            if( undo_buffer_idx > 1 )
                undo_buffer_idx = undo_buffer_idx - 1;
                anns_under_edition = undo_buffer{undo_buffer_idx};
                selected_hb_idx = [];
                RRserie_filt = {[]};

                Redraw();
            end

        elseif (strcmp(event_obj.Key,'rightarrow') && ~isempty(event_obj.Modifier) && strcmp(event_obj.Modifier,'control'))

            if(bRecEdited)

                update_annotations();

                if( bLoadECG )
                    update_title_efimero('Saving data ...', 5 );
                    save(rec_path, '-struct', 'ECG_struct');
                    update_title_efimero(['Saved ' rec_path], 5 );

                    if( rec_idx >= 1 && rec_idx < length(recording_indexes) )
                        rec_idx = rec_idx + 1;
                    else
                        rec_idx = 1;
                    end

%                     set(recordings_control, 'Value', rec_idx );

                    DoRecording();

                else

                    if( isfield(ECG_struct, 'series_quality' ) )
                        anns_struct.series_quality = ECG_struct.series_quality;
                    end
                    for ii = 1:size(AnnNames,1)
                        anns_struct.(AnnNames{ii,1}) = ECG_struct.(AnnNames{ii,1});
                    end
                    assignin( 'caller', OutputVarName, anns_struct );
                    update_title_efimero(sprintf('Saving ''%s'' variable in caller workspace', OutputVarName), 5 );

                    bAnnsEdited = false;
                    bRecEdited = false;

                end
            end

        elseif (strcmp(event_obj.Key,'leftarrow') && ~isempty(event_obj.Modifier) && strcmp(event_obj.Modifier,'control'))

            if(bRecEdited)

                update_annotations();

                if( bLoadECG )
                    update_title_efimero('Saving data ...', 5 );
                    save(rec_path, '-struct', 'ECG_struct');
                    update_title_efimero(['Saved ' rec_path], 5 );

                    if( rec_idx > 1 && rec_idx <= length(recording_indexes) )
                        rec_idx = rec_idx - 1;
                    else
                        rec_idx = length(recording_indexes);
                    end

%                     set(recordings_control, 'Value', rec_idx );

                    DoRecording();

                else
                    if( isfield(ECG_struct, 'series_quality' ) )
                        anns_struct.series_quality = ECG_struct.series_quality;
                    end
                    for ii = 1:size(AnnNames,1)
                        anns_struct.(AnnNames{ii,1}) = ECG_struct.(AnnNames{ii,1});
                    end
                    assignin( 'caller', OutputVarName, anns_struct );
                    update_title_efimero(sprintf('Saving ''%s'' variable in caller workspace', OutputVarName), 5 );

                    bAnnsEdited = false;
                    bRecEdited = false;

                end
            end

        elseif (strcmp(event_obj.Key, 'l') )
            % lock ECG Y axis

            bLockECG = ~bLockECG;

            if( bLockECG )
                update_title_efimero('ECG Y axis locked', 5 );
            else
                update_title_efimero('ECG Y axis unlocked', 5 );
            end

        elseif (strcmp(event_obj.Key,'p') )

            update_title_efimero('Click and drag the time interval where the pattern is ...', 10 );

            set(fig_hdl, 'WindowButtonDownFcn', []);
            set(ECG_axes_hdl,'ButtonDownFcn', []);

            set(obj,'CurrentAxes', ECG_axes_hdl);
            waitforbuttonpress;

            point1 = get(ECG_axes_hdl,'CurrentPoint');    % button down detected
            rbbox;
            point2 = get(ECG_axes_hdl,'CurrentPoint');    % button up detected

            pattern_match_xlims = round(sort([ point1(1,1) point2(1,1) ]));
            aux_seq = pattern_match_xlims(1):pattern_match_xlims(2);

            update_title_efimero('Filtering ECG ...', 5 );

            if( isempty(filtro) )
                ECG = ECG_struct.signal(:,lead_idx);
            else
                ECG = filter(filtro, flipud(ECG_struct.signal(:,lead_idx)) );
                ECG = filter(filtro, flipud(ECG) );
            end

            if( ishandle(Pattern_hdl) )
                delete(Pattern_hdl)
            end

            hold(ECG_axes_hdl, 'on')
            Pattern_hdl = plot(ECG_axes_hdl, aux_seq, ECG(aux_seq,:), '.g' );
            hold(ECG_axes_hdl, 'off')
            drawnow;

            try
                SearchPattern();
                set(fig_hdl, 'WindowButtonDownFcn', @WindowButtonDownCallback2D);
                set(ECG_axes_hdl,'ButtonDownFcn',@inspect_ECG);

            catch ME

                set(fig_hdl, 'WindowButtonDownFcn', @WindowButtonDownCallback2D);
                set(ECG_axes_hdl,'ButtonDownFcn',@inspect_ECG);
                rethrow(ME);
            end

            % store the axes_hdl created in SearchPattern();
            axes_hdl( RR_global_PM_k, 1:2) = [RR_global_PM_hdl, figPatternMatch_hdl];
            axes_hdl( proximity_k, 1:2) = [proximity_hdl, figPatternMatch_hdl];
            axes_hdl( similarity_hdl_k, 1:2) = [similarity_hdl, figPatternMatch_hdl];
            axes_hdl( similarity_hist_hdl_k, 1:2) = [similarity_hist_hdl, figPatternMatch_hdl];
            axes_hdl( pattMatch_hdl_k, 1:2) = [pattMatch_hdl, figPatternMatch_hdl];

        elseif ( ~isempty(event_obj.Modifier) && strcmp(event_obj.Key,'g') && strcmp(event_obj.Modifier,'control'))

            if(bRecEdited)

                update_annotations();

                if( bLoadECG )
                    update_title_efimero('Saving data ...', 5 );
                    save(rec_path, '-struct', 'ECG_struct');
                    update_title_efimero(['Saved ' rec_path], 5 );
                else

                    if( isfield(ECG_struct, 'series_quality' ) )
                        anns_struct.series_quality = ECG_struct.series_quality;
                    end
                    for ii = 1:size(AnnNames,1)
                        anns_struct.(AnnNames{ii,1}) = ECG_struct.(AnnNames{ii,1});
                    end
                    assignin( 'caller', OutputVarName, anns_struct );
                    update_title_efimero(sprintf('Saving ''%s'' variable in caller workspace', OutputVarName), 5 );

                    bAnnsEdited = false;
                    bRecEdited = false;
                end

            end

        elseif (strcmp(event_obj.Key,'t'))
            %% Toggle ECG lead
            if( length(lead_idx) > 1 )
                lead_idx = 1;
            else
                if( lead_idx < ECG_struct.header.nsig )
                    lead_idx = lead_idx + 1;
                else
                    lead_idx = 1:ECG_struct.header.nsig;
                end
            end
            cla(ECG_axes_hdl);

            if( bSeries )
                this_all_anns = all_annotations_selected_serie_location;
                aux_val = this_all_anns{1};
                aux_val(serie_location_mask) = nan;
                this_all_anns{1} = aux_val;
            else
                this_all_anns = all_annotations_selected;
            end

            if( ~bLockECG )
                ECG_limits = [];
            end

            [ECG_hdl, ECG_limits ] = plot_ecg_heartbeat(ECG_struct.signal, lead_idx, this_all_anns, start_idx, anns_under_edition_idx(hb_idx) , hb_detail_window, ECG_struct.header, filtro, ECG_axes_hdl, ECG_limits);

            if( length(lead_idx) > 1 )
                aux_str = rowvec(colvec([repmat(',', length(lead_idx), 1) ECG_struct.header.desc(lead_idx,:) ]'));
                title(ECG_axes_hdl, ['Heartbeat ' num2str(hb_idx) ' : Leads ' aux_str(2:end) ] )
            else
                title(ECG_axes_hdl, ['Heartbeat ' num2str(hb_idx) ' : Lead ' ECG_struct.header.desc(lead_idx,:)] )
            end

    %         zoom reset
            cellfun(@(a)( set(a,'ButtonDownFcn',@inspect_ECG)), ECG_hdl);
            set(ECG_axes_hdl,'ButtonDownFcn',@inspect_ECG);

        elseif (strcmp(event_obj.Key,'rightarrow'))
            %% right arrow

            if(bAnnsEdited)
                update_annotations();
            end

            AnnNames_idx = AnnNames_idx + 1;
            if( AnnNames_idx > length(AnnNames) )
                AnnNames_idx = 1;
            end

            update_title_efimero(['Using ' AnnNames{AnnNames_idx,1} ' annotations (' num2str(ratios(AnnNames_idx)) ')'], 5 );

            undo_buffer_idx = 1;

            anns_under_edition = unique(round(colvec( ECG_struct.(AnnNames{AnnNames_idx,1}).(AnnNames{AnnNames_idx,2}) )));

            bAnnsEdited = false;

            selected_hb_idx = [];

            Redraw();

        elseif (strcmp(event_obj.Key,'leftarrow'))
            %% left arrow

            if(bAnnsEdited)
                update_annotations();
            end

            AnnNames_idx = AnnNames_idx - 1;
            if( AnnNames_idx < 1  )
                AnnNames_idx = length(AnnNames);
            end

            update_title_efimero(['Using ' AnnNames{AnnNames_idx,1} ' annotations (' num2str(ratios(AnnNames_idx)) ')'], 5 );

            undo_buffer_idx = 1;

            anns_under_edition = unique(round(colvec( ECG_struct.(AnnNames{AnnNames_idx,1}).(AnnNames{AnnNames_idx,2}) )));

            bAnnsEdited = false;

            selected_hb_idx = [];

            Redraw();

        else
%             bLockRRserie = false;
%             bLockScatter = false;
%             lead_idx = 1:ECG_struct.header.nsig;
        end

    end

    function PushUndoAction()

        if( undo_buffer_idx < length(undo_buffer) )
            %me cargo todo lo que est� por rehacerse
            undo_buffer = undo_buffer(1:undo_buffer_idx);
        end

        undo_buffer{undo_buffer_idx} = anns_under_edition;
        undo_buffer_idx = undo_buffer_idx + 1;

    end

    function this_point = get_current_point()

        if( isempty(anns_under_edition_idx) )
            this_point = [];
        else
            point = get(gca,'CurrentPoint');

            [~, aux_val] = sort( abs(point(1) - anns_under_edition(anns_under_edition_idx)) );
            aux_val = aux_val(1);

    %         fprintf(1, '%d %d\n', point(1), aux_val);
            lanns_under_ed = length(anns_under_edition_idx);
            this_point = max(1, min(lanns_under_ed, aux_val ));
        end
    end

    function WindowButtonDownCallback2D(obj,event_obj)

        if (strcmp(get(fig_hdl,'SelectionType'),'alt'))

            prev_u = get(fig_hdl, 'units');
            set(fig_hdl, 'units','normalized');
            crd = get(fig_hdl, 'CurrentPoint');
            xp = crd(1);
            yp = crd(2);
            set(fig_hdl, 'units', prev_u);

            if( ~isempty([min_y_drag max_x_drag min_y_drag]) && xp <= max_x_drag && yp <= max_y_drag && yp >= min_y_drag)
                DragMouseBegin()
            end
        end

    end

    function WindowButtonUpCallback2D(obj,event_obj)

%         update_title_efimero( 'BU', 5);

        DragMouseEnd()

    end

    function inspect_RRserie(obj,event_obj)

        if (strcmp(get(fig_hdl,'SelectionType'),'extend'))
            % Show ECG

            aux_RR = RRserie{1};
            aux_RR = aux_RR(anns_under_edition_idx);

            point1 = get(gca,'CurrentPoint');    % button down detected
            rbbox;
            point2 = get(gca,'CurrentPoint');    % button up detected

            if( ~isempty(selected_hb_idx) )
                delete(RRserie_selection_hdl)
                delete(RRscatter_selection_hdl)
            end

            [~, aux_val] = sort( abs(point1(1,1) - anns_under_edition(anns_under_edition_idx)) );
            xlims = aux_val(1);
            [~, aux_val] = sort( abs(point2(1,1) - anns_under_edition(anns_under_edition_idx)) );
            xlims = sort([xlims aux_val(1)]);

            ylims = sort([ point1(1,2) point2(1,2) ]);
            lanns_under_ed = length(anns_under_edition_idx);
            bAux = false(lanns_under_ed,1);
            bAux(max(1,xlims(1)):min(lanns_under_ed,xlims(2))) = true;
            selected_hb_idx = find( bAux & aux_RR > ylims(1) & aux_RR < ylims(2) );

            if( isempty(selected_hb_idx) )
                % probar en el rango de x solamente
                selected_hb_idx = find( bAux );
            end

            if( ~isempty(selected_hb_idx) )

                update_title_efimero([num2str(length(selected_hb_idx)) ' heartbeats selected.'], 5 );

                hold(Scatter_axes_hdl, 'on')
                aux_RRnext = [aux_RR(2:end); aux_RR(end)];
                RRscatter_selection_hdl = plot(Scatter_axes_hdl, aux_RR(selected_hb_idx), aux_RRnext(selected_hb_idx), 'xg' );
                hold(Scatter_axes_hdl, 'off')

                hold(RRserie_axes_hdl, 'on')
                RRserie_selection_hdl = plot(RRserie_axes_hdl, anns_under_edition(anns_under_edition_idx(selected_hb_idx)) , aux_RR(selected_hb_idx), 'og' );
                hold(RRserie_axes_hdl, 'off')

                min_hb_idx = min(selected_hb_idx);
                max_hb_idx = max(selected_hb_idx);
                cant_hb_idx = max_hb_idx - min_hb_idx + 1;

                if( (anns_under_edition(anns_under_edition_idx(max_hb_idx)) - anns_under_edition(anns_under_edition_idx(min_hb_idx))) <= (10*ECG_struct.header.freq) )

                    if( bSeries )
                        this_all_anns = all_annotations_selected_serie_location;
                        aux_val = this_all_anns{1};
                        aux_val(serie_location_mask) = nan;
                        this_all_anns{1} = aux_val;
                    else
                        this_all_anns = all_annotations_selected;
                    end

                    if( ~bLockECG )
                        ECG_limits = [];
                    end

                    [ECG_hdl, ECG_limits ] = plot_ecg_heartbeat(ECG_struct.signal, lead_idx, this_all_anns, start_idx, anns_under_edition_idx(hb_idx) , hb_detail_window, ECG_struct.header, filtro, ECG_axes_hdl, ECG_limits);
                    cellfun(@(a)( set(a,'ButtonDownFcn',@inspect_ECG)), ECG_hdl);

                end

                if( length(lead_idx) > 1 )
                    aux_str = rowvec(colvec([repmat(',', length(lead_idx), 1) ECG_struct.header.desc(lead_idx,:) ]'));
                    title(ECG_axes_hdl, ['Heartbeat ' num2str(hb_idx) ' : Leads ' aux_str(2:end) ] )
                else
                    title(ECG_axes_hdl, ['Heartbeat ' num2str(min_hb_idx) ' : Lead ' ECG_struct.header.desc(lead_idx,:)] )
                end

    %             zoom reset

                set(ECG_axes_hdl,'ButtonDownFcn',@inspect_ECG);

                % Zoom RR serie
                UpdateRRserieZoom();

            end

        elseif (strcmp(get(fig_hdl,'SelectionType'),'normal'))

            % Show ECG

            bChangeWin = false;

            if( ishandle(RRscatter_hb_idx_hdl) )
                delete(RRscatter_hb_idx_hdl)
            end
            if( ishandle(RRserie_hb_idx_hdl) )
                delete(RRserie_hb_idx_hdl)
            end

%             point = get(gca,'CurrentPoint');
%
%             lanns_under_ed = length(anns_under_edition);
%             [~, aux_val] = sort( abs(point(1) - anns_under_edition) );
%             aux_val = aux_val(1);
%
%             x_timeScroll_units = point(1);
% %             fprintf(1, 'xunits\n');

            aux_val = get_current_point();
%             x_units = hb_idx;

            if( isempty(aux_val) )
                return
            end

            hb_idx = aux_val;

            hold(Scatter_axes_hdl, 'on')
            aux_RR = RRserie{1};
            aux_RR = aux_RR(anns_under_edition_idx);
            RRnext = [aux_RR(2:end); aux_RR(end)];
%             RRscatter_selection_hdl = plot(Scatter_axes_hdl, RRserie(selected_hb_idx), RRnext(selected_hb_idx), 'xg' );
            RRscatter_hb_idx_hdl = plot(Scatter_axes_hdl, aux_RR(hb_idx), RRnext(hb_idx), 'or' );
            hold(Scatter_axes_hdl, 'off')

            hold(RRserie_axes_hdl, 'on')
            RRserie_hb_idx_hdl = plot(RRserie_axes_hdl, anns_under_edition(anns_under_edition_idx(hb_idx)), aux_RR(hb_idx), 'or' );
            hold(RRserie_axes_hdl, 'off')

            %Zoom RR serie
            UpdateRRserieZoom();

            if( bSeries )
                this_all_anns = all_annotations_selected_serie_location;
                aux_val = this_all_anns{1};
                aux_val(serie_location_mask) = nan;
                this_all_anns{1} = aux_val;
            else
                this_all_anns = all_annotations_selected;
            end

            if( ~bLockECG )
                ECG_limits = [];
            end

            if( isempty(anns_under_edition_idx) )
                [ECG_hdl, ECG_limits ] = plot_ecg_heartbeat(ECG_struct.signal, lead_idx, this_all_anns, start_idx, [] , hb_detail_window, ECG_struct.header, filtro, ECG_axes_hdl, ECG_limits);
            else
                [ECG_hdl, ECG_limits ] = plot_ecg_heartbeat(ECG_struct.signal, lead_idx, this_all_anns, start_idx, anns_under_edition_idx(hb_idx) , hb_detail_window, ECG_struct.header, filtro, ECG_axes_hdl, ECG_limits);
            end

            if( length(lead_idx) > 1 )
                aux_str = rowvec(colvec([repmat(',', length(lead_idx), 1) ECG_struct.header.desc(lead_idx,:) ]'));
                title(ECG_axes_hdl, ['Heartbeat ' num2str(hb_idx) ' : Leads ' aux_str(2:end) ] )
            else
                title(ECG_axes_hdl, ['Heartbeat ' num2str(hb_idx) ' : Lead ' ECG_struct.header.desc(lead_idx,:)] )
            end

    %         zoom reset

            cellfun(@(a)( set(a,'ButtonDownFcn',@inspect_ECG)), ECG_hdl);

            set(ECG_axes_hdl,'ButtonDownFcn',@inspect_ECG);

        elseif (strcmp(get(fig_hdl,'SelectionType'), 'alt'))

            bChangeWin = true;

            axes_hdl_selector_idx = RRserie_axes_k;

            DragMouseBegin()

        end

    end

    function SearchPattern()

        aux_seq = pattern_match_xlims(1):pattern_match_xlims(2);

        CalcSimilarity();

        lead_idx = lead_idx(1);
        llead_idx = length(lead_idx);

        if( isempty(ECG_w) )
            ndown_similarity = 1;
            pattern2detect = ECG_struct.signal(aux_seq,lead_idx);
            pattern2detect = bsxfun( @minus, pattern2detect, mean(pattern2detect));

        else
            % resampling of the signal
            Nqrs = round( .09 * 250); % samples of a normal QRS sampled at 250 Hz
            fs_target = min( ECG_struct.header.freq, round(  Nqrs / length(aux_seq)* ECG_struct.header.freq) );
            ndown_similarity = round( ECG_struct.header.freq / fs_target);
            aux_factors = cumprod(sort(factor(ECG_struct.header.freq)));
            ndown_similarity = aux_factors( find(aux_factors <= ndown_similarity, 1, 'last') );
            if( isempty(ndown_similarity) )
                ndown_similarity = 1;
            end
        end

        if( bSeries )
            aux_val = all_annotations_selected_serie_location{1};
            % update the series values
            aux_RR = (aux_val - anns_under_edition) / ECG_struct.header.freq;

            all_annotations_selected(1) = {anns_under_edition};

            this_all_anns = all_annotations_selected_serie_location;
            aux_val = this_all_anns{1};
            aux_val(serie_location_mask) = nan;
            this_all_anns{1} = aux_val;

            RR_idx(1) = { find( isnan(anns_under_edition) | anns_under_edition >= start_idx &  anns_under_edition <= end_idx ) } ;

        else

            if( length(anns_under_edition) < 2 )
                aux_RR = [];
                this_all_anns = [];
                aux_RR_filt = [];

            else
%                 aux_RR = colvec(diff(anns_under_edition));

                [aux_RR, aux_RR_filt ] = RR_calculation(anns_under_edition, ECG_struct.header.freq, RRserie_filt{1});
                aux_RR = aux_RR * 1/ECG_struct.header.freq;

                all_annotations_selected(1) = {anns_under_edition};
                this_all_anns = all_annotations_selected;
            end

            RR_idx(1) = { find( anns_under_edition >= start_idx &  anns_under_edition <= end_idx ) } ;

        end

        RRserie(1) = {aux_RR};
        RRserie_filt(1) = {aux_RR_filt};

        anns_under_edition_idx = RR_idx{1};

        if( ~isempty(figPatternMatch_hdl) && ishandle(figPatternMatch_hdl) && figPatternMatch_hdl ~= fig_hdl )
            figure(figPatternMatch_hdl);
            clf();
        else
            figPatternMatch_hdl = figure();
        end

        set(figPatternMatch_hdl, 'WindowButtonDownFcn', @SrchPattButtonDownCallback);
        set(figPatternMatch_hdl, 'WindowButtonUpFcn',   @SrchPattButtonUpCallback);

        set(figPatternMatch_hdl, 'Position', [ maximized_size(3:4) maximized_size(3:4) ] .* [ 0.05 0.13 0.95 0.9] );

        win_sample = min(ECG_struct.header.nsamp, round(20*ECG_struct.header.freq / ndown_similarity));
        win_sample_2 = min(ECG_struct.header.nsamp, round(3*ECG_struct.header.freq / ndown_similarity));
        break_sample = round(1*ECG_struct.header.freq / ndown_similarity);
        n_excerpts = 5;
        aux_idx = 1:win_sample;

        aux_val = (start_idx:(end_idx-win_sample));
        if( isempty(aux_val) )
            aux_windows = ones(1,n_excerpts);
        else
            aux_windows = randsample( round(aux_val*1/ndown_similarity), n_excerpts);
        end

        sig_breaks = nan(break_sample, llead_idx + 1 );

        dt_samp = round(proximity_thr_PM*ECG_struct.header.freq/ ndown_similarity);
        prex_win_start = round(0.2*ECG_struct.header.freq/ ndown_similarity);
        prex_win_end = round(1.5*ECG_struct.header.freq/ ndown_similarity);
        aux_pack = [];

        similarity_min = realmax;

        if( isempty(ECG_w) )

            aux_val = sig_breaks;
            for aux_start = (aux_windows+1)
%                 aux_val1 = [bsxfun( @minus, ECG(aux_start:(aux_start+win_sample),:), mean(ECG(aux_idx))) similarity(aux_start:(aux_start+win_sample))-mean(similarity(aux_start:(aux_start+win_sample))) ];
                aux_val1 = [bsxfun( @minus, ECG(aux_start:(aux_start+win_sample),:), mean(ECG(aux_idx))) similarity(aux_start:(aux_start+win_sample)) ];

                similarity_min = min([ similarity_min; colvec(aux_val1( aux_val1(:,end) > 0, end)) ]);

                aux_val = [aux_val; aux_val1; sig_breaks ];

                aux_pack = [aux_pack; pack_signal(ECG(:,lead_idx), anns_under_edition( anns_under_edition >= aux_start &  anns_under_edition <= (aux_start+win_sample) ), [ prex_win_start prex_win_end ], true) ];

            end

        else

            aux_w = ECGwrapper('recording_name', similarity);
            aux_w_ecg = ECGwrapper('recording_name', resampled_ECG_similarity);

            aux_val = sig_breaks;

            for aux_start = (aux_windows+1)
%                 aux_val1 = [aux_w_ecg.read_signal( aux_start, aux_start + win_sample ) aux_w.read_signal( aux_start, aux_start + win_sample ) ];
%                 aux_val1 = [aux_val1(:, lead_idx) aux_w.read_signal( aux_start, aux_start + win_sample ) ];

                aux_val1 = aux_w_ecg.read_signal( aux_start, aux_start + win_sample );

                aux_anns = round((anns_under_edition( anns_under_edition >= ndown_similarity*aux_start &  anns_under_edition <= ndown_similarity*(aux_start+win_sample) ) - ndown_similarity*aux_start + 1) / ndown_similarity );

%                 aux_val1 = aux_val1(:,lead_idx);
                aux_val1 = aux_val1(:,1);

                aux_pack = [aux_pack squeeze(pack_signal(aux_val1, aux_anns, [ prex_win_start prex_win_end ], true)) ];

                aux_val1 = aux_val1(1:(win_sample_2+1),:);

                aux_val1 = [aux_val1 aux_w.read_signal( aux_start, aux_start + win_sample_2 ) ];

                similarity_min = min([ similarity_min; colvec(aux_val1( aux_val1(:,end) > 0, end)) ]);

                aux_val = [aux_val; [bsxfun(@minus, aux_val1(:,1:end-1), mean(aux_val1(:,1:end-1)) ) aux_val1(:,end) ]; sig_breaks ];
            end
        end

        aux_similarity_max = aux_w.read_signal( 1, aux_w.ECG_header.nsamp );

        % modmax calculation

        aux_w.ECGtaskHandle = 'arbitrary_function';
        aux_w.cacheResults = false;
        aux_w.ECGtaskHandle.lead_idx = 1;
        % generate QRS detections
        aux_w.ECGtaskHandle.signal_payload = false;
        aux_w.user_string = ['modmax_calc_for_leads_' num2str(sort(lead_idx)) ];
        aux_w.ECGtaskHandle.function_pointer = @arb_modmax;

        aux_payload.xlims = [start_idx_PM end_idx_PM];
        aux_payload.thr = median( aux_similarity_max );
        % for faster computation avoid time restriction in the first pass
        aux_payload.detection_threshold = proximity_thr_PM;
        % get only the first n_greater matches of the pattern
%         aux_payload.n_greater = round((end_idx_PM - start_idx_PM + 1 ) / round(1.5 * proximity_thr_PM * aux_w.ECG_header.freq) );
        aux_w.ECGtaskHandle.payload = aux_payload;
        aux_w.Run

        if( isempty(aux_w.Result_files) )
            close(figPatternMatch_hdl)
            update_title_efimero('Pattern match failed: ModMax fcn failed.', 10 );
            return
        end

        % asume that the whole series keep in mem.
        aux_max_idx = load(aux_w.Result_files{1});
        aux_max_idx = aux_max_idx.result;
        aux_similarity_max = aux_similarity_max(aux_max_idx);

%         prctile_grid = prctile( aux_similarity_max, 1:100 );
%
%         grid_step = median(diff(prctile_grid));
%
%         max2find_in_hist = 10;
%         thr_max = zeros(max2find_in_hist+1,1);
%         hist_max_values = zeros(2*max2find_in_hist+1,1);
%
%         min_grid = prctile(aux_similarity_max,5);
%         max_grid = prctile(aux_similarity_max,95);
%         grid_N = round((max_grid-min_grid)/grid_step);
%         thr_grid = linspace(min_grid, max_grid, grid_N);
%
%         while( length( thr_max ) > max2find_in_hist  && grid_N > round(1.5*max2find_in_hist) )
%
%             thr_grid = linspace(min_grid, max_grid, grid_N);
%
%             hist_max_values = histcounts(aux_similarity_max, thr_grid);
%
%             [thr_idx, thr_max ] = modmax( colvec( hist_max_values ) , first_bin_idx );
%
%             grid_N = round(grid_N * 0.7);
%
%         end

        min_grid = prctile(aux_similarity_max,5);
        max_grid = prctile(aux_similarity_max,95);

        thr_grid = linspace(min_grid, max_grid, min(40, length(aux_similarity_max) ) );

        hist_max_values = histcounts(aux_similarity_max, thr_grid);

        first_bin_idx = 2;

        [thr_idx, thr_max ] = modmax( colvec( hist_max_values ) , first_bin_idx );

        % mass center of the distribution, probably the value where the
        % patterns under search are located.
        thr_idx_expected = floor(rowvec(thr_idx) * colvec(thr_max) *1/sum(thr_max));

        aux_seq = 1:length(thr_grid);

        min_hist_max_values = min( hist_max_values( aux_seq >= first_bin_idx & aux_seq < thr_idx_expected) );

        % in case several indexes match the boolean condition, the mean
        % index is the center of all those indexes. Other criteria such as
        % min or max can be explored
        thr_min_idx = round(mean(find(aux_seq >= first_bin_idx & aux_seq < thr_idx_expected & [hist_max_values 0] == min_hist_max_values)));

        similarity_thr = thr_grid(thr_min_idx );

        % compress dynamic range of detection signal
        aux_val(:, end) = log10( similarity_min +  aux_val(:, end) );

        similarity_scale_thr = max(abs(aux_val));
        similarity_scale_thr(end) = log10( similarity_min + max(thr_grid));
        aux_val = bsxfun(@times, aux_val, 1./similarity_scale_thr);
        aux_val(:,1:llead_idx) = (aux_val(:,1:llead_idx)*0.5) - 0.5;

        %% axes de Similarity
        similarity_hdl = axes(figPatternMatch_hdl, 'Position', [ 0.015 0.025 0.5 0.605]);
        aux_hdls = plot(aux_val, 'ButtonDownFcn', @ButtonDownSimilarity);

        hold(similarity_hdl, 'on')
        similarity_thr_hdl = plot(similarity_hdl, get(similarity_hdl, 'Xlim'), log10( similarity_min +  [similarity_thr similarity_thr] )*1/similarity_scale_thr(end), '--r', 'ButtonDownFcn', @ButtonDownSimilarity);
        hold(similarity_hdl, 'off')

        title('Select the detection threshold to use in the similarity function')

        set(similarity_hdl, 'Ytick', []);

        aux_val = sort([ break_sample+(0:(win_sample+break_sample):(n_excerpts-1)*(win_sample+break_sample)) break_sample+win_sample+(0:(win_sample+break_sample):(n_excerpts-1)*(win_sample+break_sample)) length(aux_val) ]);
        set(similarity_hdl, 'Xtick', aux_val );

        aux_val = sort([ aux_windows (aux_windows + win_sample) ECG_struct.header.nsamp]);
        set(similarity_hdl, 'XtickLabel', Seconds2HMS( aux_val ./ ECG_struct.header.freq ));

        legend(aux_hdls, {'ECG'; 'Similarity'} );

        set(similarity_hdl, 'ButtonDownFcn', @ButtonDownSimilarity);

        %% Histograma de similaridad

        aux_grid = linspace(thr_grid(1), thr_grid(end), min(60, length(thr_grid)) );

        similarity_hist_hdl = axes(figPatternMatch_hdl, 'Position', [ 0.52 0.025 0.29 0.605]);
        histogram(similarity_hist_hdl, aux_similarity_max(aux_similarity_max < similarity_thr), aux_grid,  'ButtonDownFcn', @ButtonDownSimilarity_Hist);

        hold(similarity_hist_hdl, 'on')
        histogram(similarity_hist_hdl, aux_similarity_max(aux_similarity_max >= similarity_thr), aux_grid, 'ButtonDownFcn', @ButtonDownSimilarity_Hist);
        similarity_hist_thr_hdl = plot(similarity_hist_hdl, [similarity_thr similarity_thr], get(similarity_hist_hdl, 'Ylim') , '--r', 'ButtonDownFcn', @ButtonDownSimilarity_Hist);
        hold(similarity_hist_hdl, 'off')

        legend( {'probably NOT pattern' 'probably pattern MATCH' 'threshold' } )
        title('Detection threshold histogram view')

        set(similarity_hist_hdl, 'Ytick', []);

        set(similarity_hist_hdl, 'Xtick', []);

        set(similarity_hist_hdl, 'ButtonDownFcn', @ButtonDownSimilarity_Hist);

        %% proceed button

        uicontrol( figPatternMatch_hdl, ...
                'style','pushbutton', ...
                'string', 'Run !', ...
                'ForegroundColor', [1 0 0], ...
                'FontWeight', 'bold', ...
                'units','normalized', ...
                'position', [0.83 0.025 0.14 0.05], ...
                'callback', @ButtonDownProceed);

        %% axes de pattern to match
        pattMatch_hdl = axes(figPatternMatch_hdl, 'Position', [ 0.83 0.14 0.14 0.49]);

        aux_seq = [ max(1, pattern_match_xlims(1) - abs(diff(pattern_match_xlims))) min(ECG_struct.header.nsamp, pattern_match_xlims(2) + abs(diff(pattern_match_xlims))) ];
        aux_seq = aux_seq(1):aux_seq(2);

        plot(aux_seq, ECG(aux_seq,:) )

        set(pattMatch_hdl, 'Ytick', []);

        aux_Xtick = round(linspace(pattern_match_xlims(1), pattern_match_xlims(2), 2));
        set(pattMatch_hdl, 'Xtick', aux_Xtick);
        set(pattMatch_hdl, 'XtickLabel', ['0'; {Seconds2HMS((abs(diff(aux_Xtick)))*1/ECG_struct.header.freq,1)}] );

        limits = ylim();

        aux_box_lim = [limits(1) + 0.1*abs(diff(limits)) limits(2) - 0.1*abs(diff(limits)) ];
        pattMatch_patch_hdl = patch([pattern_match_xlims(1) pattern_match_xlims(1) pattern_match_xlims(2) pattern_match_xlims(2) pattern_match_xlims(1)], [aux_box_lim(1) aux_box_lim(2) aux_box_lim(2) aux_box_lim(1) aux_box_lim(1)], [220 220 240]/255, 'EdgeColor', [0 0 1], 'ButtonDownFcn', @ButtonDownCallbackDefault, 'LineWidth', 0.5);
        uistack(pattMatch_patch_hdl, 'bottom');

        title(pattMatch_hdl, 'Pattern to match');

        prev_units = get(pattMatch_hdl, 'Units');
        set(pattMatch_hdl, 'Units', 'pixels');
        this_pos = get(pattMatch_hdl, 'Position');
        axes_hdl( pattMatch_hdl_k, 3) = max_pattern_match_win_size / (this_pos(3));
        set(pattMatch_hdl, 'Units', prev_units);

        set(pattMatch_hdl, 'ButtonDownFcn', @ButtonDownCallbackDefault);

        %% axes de Proximity
        proximity_hdl = axes(figPatternMatch_hdl, 'Position', [ 0.63 0.7 0.35 0.25]);

        plot(proximity_hdl, aux_pack, 'ButtonDownFcn', @ButtonDownCallbackDefault )

        set(proximity_hdl, 'Ytick', []);

        aux_Xtick = round(linspace(prex_win_start, dt_samp + prex_win_start, 4));
        set(proximity_hdl, 'Xtick', aux_Xtick);
        set(proximity_hdl, 'XtickLabel', Seconds2HMS((aux_Xtick-prex_win_start)*ndown_similarity/ECG_struct.header.freq,1));

        limits = ylim();

        aux_box_lim = [limits(1) + 0.1*abs(diff(limits)) limits(2) - 0.1*abs(diff(limits)) ];
        proximity_patch_hdl = patch(proximity_hdl, [prex_win_start prex_win_start repmat(dt_samp + prex_win_start,1,2) prex_win_start ], [aux_box_lim(1) aux_box_lim(2) aux_box_lim(2) aux_box_lim(1) aux_box_lim(1)], [183 241 171]/255, 'EdgeColor', [0 1 0], 'ButtonDownFcn', @ButtonDownCallbackDefault, 'LineWidth', 0.5);
        uistack(proximity_patch_hdl, 'bottom');

        xlim(proximity_hdl, [ 1 round(1.2 * (prex_win_start + dt_samp)) ] )

        title(proximity_hdl, 'Click and drag the green box to select the min interval between QRS');

        prev_units = get(proximity_hdl, 'Units');
        set(proximity_hdl, 'Units', 'pixels');
        this_pos = get(proximity_hdl, 'Position');
        axes_hdl( proximity_k, 3) = max_proximity_win_size / (this_pos(3));
        set(proximity_hdl, 'Units', prev_units);

        set(proximity_hdl, 'ButtonDownFcn', @ButtonDownCallbackDefault);

        %% axes de RR serie global

        % update only the one that can be edited

        QRSxlims = [1 ECG_struct.header.nsamp];

        RR_global_PM_hdl = axes(figPatternMatch_hdl, 'Position', [ 0.015 0.7 0.6 0.25]);

        if( isempty(aux_RR) )
            hold(RR_global_PM_hdl, 'on')
        else
            hold(RR_global_PM_hdl, 'on')

            prev_units = get(RR_global_PM_hdl, 'Units');
            set(RR_global_PM_hdl, 'Units', 'pixels');

            % Downsample version: For efficient marks visualization and printing only
            target_res = 5; % samples/pixel

            axes_size = get(RR_global_PM_hdl, 'Position');
            nsamp_target = axes_size(3) * target_res;
            set(RR_global_PM_hdl, 'Units', prev_units);

            max_length = max(cellfun( @(this_rr_serie)( length(this_rr_serie)  ), RRserie ));

            down_factor = max(1, ceil( max_length / nsamp_target));

%                 RRserie_aux = cellfun( @(this_rr_serie)( resample(this_rr_serie, 1, down_factor, 60 )  ), RRserie, 'UniformOutput', false );
%                 cellfun( @(this_anns, this_rr_serie, ii)( plot(RR_global_PM_hdl, this_anns( round(linspace(1,length(this_anns),length(this_rr_serie))) )  , this_rr_serie, 'Marker', all_markers{ii}, 'LineStyle', ':', 'MarkerEdgeColor', ColorOrder(ii,:), 'Color', ColorOrder(ii,:), 'ButtonDownFcn', @ButtonDownCallbackDefault, 'ButtonUpFcn', @ButtonUpCallbackDefault )  ), all_annotations_selected, RRserie_aux, num2cell((1:length(RRserie))') );

            % downsample this way to deal with NaN values.
            not_nan_idx = cellfun( @(this_rr_serie)( ~isnan(this_rr_serie) ), RRserie, 'UniformOutput', false );
            RRserie_aux = cellfun( @(this_anns, this_rr_serie, this_non_nan_idx)( interp1(this_anns(this_non_nan_idx), this_rr_serie(this_non_nan_idx), this_anns( round(linspace(1,length(this_anns), ceil(sum(this_non_nan_idx)/down_factor) ))), 'pchip')  ), all_annotations_selected, RRserie, not_nan_idx, 'UniformOutput', false );
            cellfun( @(this_anns, this_rr_serie, ii)( plot(RR_global_PM_hdl, this_anns( round(linspace(1,length(this_anns),length(this_rr_serie))) )  , this_rr_serie, 'Marker', all_markers{ii}, 'LineStyle', ':', 'MarkerEdgeColor', ColorOrder(ii,:), 'Color', ColorOrder(ii,:), 'ButtonDownFcn', @ButtonDownCallbackDefault )  ), all_annotations_selected, RRserie_aux, num2cell((1:length(RRserie))') );

            limits = prctile(aux_RR, [1 99]);
            ylim(RR_global_PM_hdl, limits);

%                 RRserie_zoombars_hdl = plot(RR_global_PM_hdl, repmat([ start_idx end_idx], 2, 1), repmat(limits,2,1)', 'LineWidth', 3, 'Color', 'r', 'ButtonDownFcn', @ButtonDownCallbackDefault, 'ButtonUpFcn', @ButtonUpCallbackDefault );
            RR_global_PM_patch_hdl = patch([QRSxlims(1) QRSxlims(1) QRSxlims(2) QRSxlims(2) QRSxlims(1) ], [limits(1) limits(2) limits(2) limits(1) limits(1)], [241 183 171]/255, 'EdgeColor', [1 0 0], 'ButtonDownFcn', @ButtonDownCallbackDefault, 'LineWidth', 0.5);
            uistack(RR_global_PM_patch_hdl, 'bottom');

            hold(RR_global_PM_hdl, 'off')

            max_end = max(cellfun( @(this_ann)( this_ann(end)  ), all_annotations_selected ));
            min_start = min(cellfun( @(this_ann)( this_ann(1)  ), all_annotations_selected ));
            max_range = max_end - min_start;

            xlim(RR_global_PM_hdl, [ min_start - 0.02*max_range max_end + 0.02*max_range ]);

            % store scale constant (min/px)
            axes_hdl( RR_global_PM_k, 3) = max_range / ECG_struct.header.freq / 60 / (axes_size(3) / 2);

            if( length(aux_RR) > 5 )
                cant_ticks = 8;

                [~, major_tick_idx] = sort( abs(((anns_under_edition(end)-anns_under_edition(1))./major_tick_values_time - cant_ticks)));
                major_tick = major_tick_values_time(major_tick_idx(1));

                aux_idx = round(1:major_tick:anns_under_edition(end));
                set(RR_global_PM_hdl, 'XTick', rowvec(aux_idx) );
                aux_str = cellstr(Seconds2HMS((aux_idx(1)+base_start_time-1)*1/ECG_struct.header.freq));
                aux_str = [aux_str; cellstr(Seconds2HMS((aux_idx(2:(end-1)))*1/ECG_struct.header.freq))];
                aux_str = [aux_str; cellstr(Seconds2HMS((aux_idx(end)+base_start_time-1)*1/ECG_struct.header.freq))];
                set(RR_global_PM_hdl, 'XTickLabel', char(aux_str) );
            end
%                 xlabel(RR_global_PM_hdl, 'Time')
%             ylabel(RR_global_PM_hdl, 'Serie value')

            title(RR_global_PM_hdl, 'Click and drag the red box to select the interval to perform QRS detection');

        end

        set(RR_global_PM_hdl, 'ButtonDownFcn', @ButtonDownCallbackDefault);

    end

    function CalcSimilarity()

        lead_idx = lead_idx(1);
        llead_idx = length(lead_idx);

        aux_seq = pattern_match_xlims(1):pattern_match_xlims(2);

        update_title_efimero('Filtering ECG ...', 5 );

        if( isempty(filtro) )
            ECG = ECG_struct.signal(:,lead_idx);
        else
            ECG = filter(filtro, flipud(ECG_struct.signal(:,lead_idx)) );
            ECG = filter(filtro, flipud(ECG) );
        end

        % decimation factor
        if( isempty(ECG_w) )
            ndown_similarity = 1;
            pattern2detect = ECG_struct.signal(aux_seq,lead_idx);
            pattern2detect = bsxfun( @minus, pattern2detect, mean(pattern2detect));

        else
            % resampling of the signal
            Nqrs = round( .09 * 250); % samples of a normal QRS sampled at 250 Hz
            fs_target = min( ECG_struct.header.freq, round(  Nqrs / length(aux_seq)* ECG_struct.header.freq) );
            ndown_similarity = round( ECG_struct.header.freq / fs_target);
            aux_factors = cumprod(sort(factor(ECG_struct.header.freq)));
            ndown_similarity = aux_factors( find(aux_factors <= ndown_similarity, 1, 'last') );
            if( isempty(ndown_similarity) )
                ndown_similarity = 1;
            end
            aux_pre = round(0.2*ECG_struct.header.freq);
            pattern2detect_orig = ECG_struct.signal(aux_seq,lead_idx);
            aux_seq = (pattern_match_xlims(1) - aux_pre ):(pattern_match_xlims(2) + aux_pre);
            pattern2detect = ECG_struct.signal(aux_seq,lead_idx);
            pattern2detect = resample(pattern2detect, 1, ndown_similarity, 4);
            pattern2detect = pattern2detect(round(aux_pre/ndown_similarity):(end-round(aux_pre/ndown_similarity)),:);
            pattern2detect = bsxfun( @minus, pattern2detect, mean(pattern2detect));
            pattern2detect = pattern2detect .* repmat(hamming(length(pattern2detect)), 1, llead_idx);

        end

        update_title_efimero('Looking for the pattern ...', 5 );

        if( isempty(ECG_w) )
            % short or easy memory handlable signals
            similarity = cellfun( @(a,b)( diff(conv( a, b, 'same' )) ), mat2cell(ECG_struct.signal(:,lead_idx), ECG_struct.header.nsamp, ones(1,llead_idx)), mat2cell(pattern2detect, diff(pattern_match_xlims)+1, ones(1,llead_idx)), 'UniformOutput', false);
            similarity = cell2mat(cellfun( @(a,b)( diff(conv( a, b, 'same' )) ), similarity, mat2cell(flipud(pattern2detect), diff(pattern_match_xlims)+1, ones(1,llead_idx)), 'UniformOutput', false));
        %     similarity = [repmat(similarity(1,:),round((nsamp_pattern-1)/2),1); similarity];
            similarity = abs(mean(similarity,2));
        else

            if( ndown_similarity > 1 )
                aux_w = ECGwrapper('recording_name', ECG_w.recording_name);
                aux_w.output_path = tempdir;
                aux_w.ECGtaskHandle = 'arbitrary_function';
                aux_w.cacheResults = false;
                aux_w.ECGtaskHandle.lead_idx = lead_idx;
                aux_w.ECGtaskHandle.signal_payload = true;
                aux_w.ECGtaskHandle.function_pointer = @(a)(resample(a, 1, ndown_similarity, 4));
                aux_w.ECGtaskHandle.sampling_rate_out = ECG_struct.header.freq / ndown_similarity;
                aux_w.user_string = ['resample_to_' num2str(round(aux_w.ECGtaskHandle.sampling_rate_out)) '_for_leads_' num2str(sort(lead_idx)) ];
                aux_w.Run
                resampled_ECG_similarity = char(aux_w.Result_files);
            else
                resampled_ECG_similarity = ECG_w.recording_name;
            end

            % similarity calculation
            aux_w = ECGwrapper('recording_name', resampled_ECG_similarity);
            aux_w.output_path = tempdir;
            aux_w.ECGtaskHandle = 'arbitrary_function';
            aux_w.cacheResults = false;
            % always one leaded signal
            aux_w.ECGtaskHandle.lead_idx = 1;
            aux_w.ECGtaskHandle.signal_payload = true;

            aux_w.user_string = ['similarity_calc_for_lead_' num2str(sort(lead_idx)) ];
            aux_w.ECGtaskHandle.sampling_rate_out = ECG_struct.header.freq / ndown_similarity;
            aux_w.ECGtaskHandle.function_pointer = @similarity_calculation;
            aux_w.ECGtaskHandle.payload = pattern2detect;
            aux_w.Run

            similarity = char(aux_w.Result_files);
        end

    end

    function ButtonDownProceed(obj,event_obj)

        CalcSimilarity();

        aux_seq = pattern_match_xlims(1):pattern_match_xlims(2);

        if( isempty(ECG_w) )
            ndown_similarity = 1;

            % short or easy memory handlable signals
            ECG_struct.pattern_match.time = modmax(similarity, [start_idx_PM end_idx_PM], similarity_thr, 1, round(proximity_thr_PM*ECG_struct.header.freq) );
        else

            % resampling of the signal
            Nqrs = round( .09 * 250); % samples of a normal QRS sampled at 250 Hz
            fs_target = min( ECG_struct.header.freq, round(  Nqrs / length(aux_seq)* ECG_struct.header.freq) );
            ndown_similarity = round( ECG_struct.header.freq / fs_target);
            aux_factors = cumprod(sort(factor(ECG_struct.header.freq)));
            ndown_similarity = aux_factors( find(aux_factors <= ndown_similarity, 1, 'last') );
            if( isempty(ndown_similarity) )
                ndown_similarity = 1;
            end
            aux_w = ECGwrapper('recording_name', similarity);

            aux_w.ECGtaskHandle = 'arbitrary_function';
            aux_w.cacheResults = false;
            aux_w.ECGtaskHandle.lead_idx = 1;
            % generate QRS detections
            aux_w.ECGtaskHandle.signal_payload = false;
            aux_w.user_string = ['modmax_calc_for_leads_' num2str(sort(lead_idx)) ];
            aux_w.ECGtaskHandle.function_pointer = @arb_modmax;

            aux_payload.xlims = [start_idx_PM end_idx_PM];
            aux_payload.thr = similarity_thr;
            aux_payload.detection_threshold = proximity_thr_PM;
            aux_w.ECGtaskHandle.payload = aux_payload;
            aux_w.Run

            % asume that the whole series keep in mem.
            aux_val = load(aux_w.Result_files{1});
            ECG_struct.pattern_match.time = round(aux_val.result * ndown_similarity);

        end

        if( strcmp(AnnNames(end,1), cellstr('pattern_match') ) )
            aux_all_anns = all_annotations;
            aux_all_anns{end} = ECG_struct.pattern_match.time;
        else
            AnnNames = [AnnNames; cellstr('pattern_match') cellstr('time')];
            aux_all_anns = [all_annotations; {ECG_struct.pattern_match.time}];
        end

        if( isempty(ECG_w) )
            % only for short signals
            [ ratios, estimated_labs ] = CalcRRserieRatio(aux_all_anns, ECG_struct.header);
        else
            % ignore ratios and q measurements in long recordings.
            ratios = zeros(size(AnnNames,1),1);
            estimated_labs = cell(size(AnnNames,1),1);

        end

        all_annotations = aux_all_anns;

        AnnNames_idx = size(AnnNames,1);
        anns_under_edition = unique(round(colvec( ECG_struct.pattern_match.time )));

        hb_idx = 1;
        selected_hb_idx = [];

        undo_buffer_idx = 1;

        aux_val = anns_under_edition;

        bAnnsEdited = false;

        if( isempty(aux_val) )
            anns_under_edition = [];
            RRserie = {[]};
            RRserie_filt = {[]};
            all_annotations_selected_serie_location = [];
            serie_location_mask = [];
        else
            anns_under_edition = unique(round(colvec( aux_val )));

            [RRserie, RRserie_filt ] = RR_calculation(anns_under_edition, ECG_struct.header.freq, RRserie_filt{1});
            RRserie = {RRserie * 1/ECG_struct.header.freq};
            RRserie_filt = {RRserie_filt};

        end
        all_annotations_selected = {anns_under_edition};
        RR_idx = { find( anns_under_edition >= start_idx &  anns_under_edition <= end_idx ) };

        bSeriesChange = true;

        figure(fig_hdl);
        Redraw();
%             figure(figPatternMatch_hdl);

        ocurrences = length(ECG_struct.pattern_match.time);

        update_title_efimero(['Threshold: ' num2str(similarity_thr) ' - found ' num2str(ocurrences) ' heartbeats with quality ' num2str(ratios(end)) ], 5 );

        disp_string_framed('*[1,0.5,0]', ['Threshold: ' num2str(similarity_thr) ' - found ' num2str(ocurrences) ' heartbeats with quality ' num2str(ratios(end)) ] );

        cant_anns = size(AnnNames,1);
        aux_str = repmat( ' - ',cant_anns,1);

        [~, best_detections_idx] = sort(ratios, 'descend');

        aux_val = 1:length(ratios);
        [~, annotations_ranking] = sort(aux_val(best_detections_idx));

        set(annotation_list_control, 'string', [ char(cellstr(num2str((1:cant_anns)'))) aux_str char(AnnNames(:,1)) repmat( ' (',cant_anns,1) num2str(round(colvec(ratios * 1000))) aux_str num2str(colvec(annotations_ranking))  repmat( ')',cant_anns,1)  ] );
        set(annotation_under_edition_label, 'string', [ 'Annotation under edition: ' char(AnnNames( AnnNames_idx ,1)) ' (' num2str(ratios(AnnNames_idx)) ')' ])
        set(annotation_list_control, 'Value', AnnNames_idx);

    end

    function ButtonDownSimilarity(obj,event_obj)

        point = get(similarity_hdl, 'CurrentPoint');

        aux_val = max(0, min(1, point(1,2)));

        similarity_thr = 10^(aux_val * similarity_scale_thr(end))-similarity_min;

        set(similarity_thr_hdl, 'Ydata', [aux_val aux_val] );
        set(similarity_hist_thr_hdl, 'Xdata', [similarity_thr similarity_thr] );

        update_title_efimero( sprintf('THR: %3.2f', similarity_thr), 5 );

    end

    function ButtonDownSimilarity_Hist(obj,event_obj)

        point = get(similarity_hist_hdl, 'CurrentPoint');

        similarity_thr = point(1,1);

        aux_val = log10(similarity_thr + similarity_min)/similarity_scale_thr(end);

        set(similarity_thr_hdl, 'Ydata', [aux_val aux_val] );
        set(similarity_hist_thr_hdl, 'Xdata', [similarity_thr similarity_thr] );

        update_title_efimero( sprintf('THR: %3.2f', similarity_thr), 5 );

    end

    function UpdateRRserieZoom()

        if( isempty(hb_idx) )
            return
        end

        bRRempty = all(cellfun( @(a)(isempty(a)), RRserie));

        if( bRRempty || isempty(anns_under_edition_idx) )

            cla(RRserie_zoom_axes_hdl, 'reset');

        else

            aux_RR = RRserie{1};
            aux_idx = find( anns_under_edition(anns_under_edition_idx) >= (anns_under_edition(anns_under_edition_idx(hb_idx)) - round(win_size_zoom/2*ECG_struct.header.freq)) & anns_under_edition(anns_under_edition_idx) <= (anns_under_edition(anns_under_edition_idx(hb_idx)) + round(win_size_zoom/2*ECG_struct.header.freq)) );
            if(length(aux_idx) < 3 )
                min_idx = find(~isnan(anns_under_edition(anns_under_edition_idx)),1);
                max_idx = find(~isnan(anns_under_edition(anns_under_edition_idx)),1, 'last');
                aux_idx = max(min_idx, hb_idx - 1 );
                aux_idx = aux_idx:min( max_idx, max(hb_idx, aux_idx) + 1 );
            else
                hb_detail_window = round( length(aux_idx) / 2 );
            end

            aux_idx2 = cellfun( @(this_anns)( find( this_anns >= anns_under_edition(anns_under_edition_idx(aux_idx(1))) &  this_anns <= anns_under_edition(anns_under_edition_idx(aux_idx(end))) ) ), all_annotations_selected, 'UniformOutput', false);

            aux_idx3 = find(~all(cellfun( @(a)(isempty(a)), aux_idx2)));

            cla(RRserie_zoom_axes_hdl, 'reset');

            if( ~isempty(aux_idx3) )

        %         RRserie2 = cellfun( @(this_anns)( colvec(diff(this_anns)) ), all_annotations_selected, 'UniformOutput', false);
        %         RRserie2 = cellfun( @(this_rr_serie)( [this_rr_serie(1); this_rr_serie] ), RRserie, 'UniformOutput', false);

                hold(RRserie_zoom_axes_hdl, 'on')
                RRserie_zoom_hdl = cellfun( @(this_anns, this_rr_serie, this_idx, ii)( plot(RRserie_zoom_axes_hdl, this_anns(this_idx) , this_rr_serie(this_idx), 'LineStyle', ':', 'Marker', all_markers{ii}, 'MarkerEdgeColor', ColorOrder(ii,:), 'Color', ColorOrder(ii,:) )  ), all_annotations_selected(aux_idx3), RRserie(aux_idx3), aux_idx2(aux_idx3), num2cell(colvec(aux_idx3)), 'UniformOutput', false );

                this_ylims = get(RRserie_axes_hdl, 'Ylim' );
                this_xlims_orig = get(RRserie_zoom_axes_hdl, 'Xlim' );

                set(RRserie_zoom_axes_hdl, 'Ylim', this_ylims );

                % blue box around
                this_xlims = this_xlims_orig + 0.01*[ diff(this_xlims_orig) -diff(this_xlims_orig) ];
                this_ylims = this_ylims + 0.015*[ diff(this_ylims) -diff(this_ylims) ];

                set(fig_hdl,'CurrentAxes', RRserie_zoom_axes_hdl);
                aux_hdl = patch([this_xlims(1) this_xlims(1) this_xlims(2) this_xlims(2) this_xlims(1) ], [this_ylims(1) this_ylims(2) this_ylims(2) this_ylims(1) this_ylims(1)], [1 1 1], 'EdgeColor', [0 0 1], 'LineWidth', 1.5, 'ButtonDownFcn', @inspect_RRserie );
                set(aux_hdl, 'FaceColor', 'none')
                uistack(aux_hdl, 'bottom');

                if( isempty(RRserie_zoom_zoombars_hdl) || ~ishandle(RRserie_zoom_zoombars_hdl) )
                    set(fig_hdl, 'CurrentAxes', RRserie_axes_hdl);
                    RRserie_zoom_zoombars_hdl = patch([this_xlims(1) this_xlims(1) this_xlims(2) this_xlims(2) this_xlims(1) ], [this_ylims(1) this_ylims(2) this_ylims(2) this_ylims(1) this_ylims(1)], [190 238 238]/255, 'EdgeColor', [0 0 1], 'LineWidth', 0.5, 'ButtonDownFcn', @inspect_RRserie);
                    uistack(RRserie_zoom_zoombars_hdl, 'bottom');
                else
                    set(RRserie_zoom_zoombars_hdl, 'Xdata', [this_xlims(1) this_xlims(1) this_xlims(2) this_xlims(2) this_xlims(1) ]);
                end

                if( ~isempty(aux_RR) )
                    [~, aux_idx2] = intersect(selected_hb_idx, aux_idx);
                    RRserie_zoom_hdl = [RRserie_zoom_hdl; colvec(arrayfun(@(a,b)( plot(RRserie_zoom_axes_hdl, a, b, 'og')), anns_under_edition(anns_under_edition_idx(selected_hb_idx(aux_idx2))), aux_RR(anns_under_edition_idx(selected_hb_idx(aux_idx2))), 'UniformOutput', false ) ) ];
                end

                if( ~isempty(aux_RR) && hb_idx < length(aux_RR) )
                    RRserie_zoom_hdl = [RRserie_zoom_hdl; colvec(arrayfun(@(a,b)( plot(RRserie_zoom_axes_hdl, a, b, 'or')), anns_under_edition(anns_under_edition_idx(hb_idx)), aux_RR(anns_under_edition_idx(hb_idx)), 'UniformOutput', false ) )];
                end

                set(RRserie_zoom_axes_hdl, 'Xlim', this_xlims_orig );

                hold(RRserie_zoom_axes_hdl, 'off');

                xlabel(RRserie_zoom_axes_hdl, 'Time');
                ylabel(RRserie_zoom_axes_hdl, 'Serie value');

                set(RRserie_zoom_axes_hdl,'ButtonDownFcn',@inspect_RRserie);
                cellfun( @(a)(set(a, 'ButtonDownFcn', @inspect_RRserie ) ), RRserie_zoom_hdl );

                aux_hb_idx = find(hb_idx == aux_idx);

                if( length(aux_idx) > 5 )
                    cant_ticks = 5;
                    if( isempty(aux_hb_idx) )
                        aux_idx = round(linspace(aux_idx(1), aux_idx(end), cant_ticks));
                    else
                        cant_ticks = cant_ticks - 1;
                        aux_idx = sort(unique([ round(linspace(aux_idx(1), aux_idx(end), cant_ticks)) aux_idx(aux_hb_idx) ]));
                        aux_hb_idx = find(hb_idx == aux_idx);
                    end
                end

                set(RRserie_zoom_axes_hdl, 'XTick', rowvec(anns_under_edition(anns_under_edition_idx(aux_idx))) );
                aux_str = cellstr(num2str(colvec(anns_under_edition_idx(aux_idx))));
                if( ~isempty(anns_under_edition) && ~isnan(anns_under_edition(anns_under_edition_idx(hb_idx))) && hb_idx <= length(anns_under_edition_idx) )
                    aux_str{aux_hb_idx} = [aux_str{aux_hb_idx} ' (' Seconds2HMS((anns_under_edition(anns_under_edition_idx(hb_idx)) + base_start_time - 1)*1/ECG_struct.header.freq) ' - ' Seconds2HMS((anns_under_edition(anns_under_edition_idx(hb_idx)))*1/ECG_struct.header.freq) ')'];
                    set(RRserie_zoom_axes_hdl, 'XTickLabel', char(aux_str) );
                end

                prev_units = get(RRserie_zoom_axes_hdl, 'Units');
                set(RRserie_zoom_axes_hdl, 'Units', 'pixels');
                this_pos = get(RRserie_zoom_axes_hdl, 'Position');
%                 aux_val = abs(diff(this_xlims_orig)) / this_pos(3);
                aux_val = max_win_size_zoom / (this_pos(3) / 2);
                axes_hdl( RRserie_zoom_axes_k, 3) = aux_val;
                set(RRserie_zoom_axes_hdl, 'Units', prev_units);

            end
        end

    end

    function DeleteAnnotations(obj,event_obj)

        cant_anns = size(AnnNames,1);

        if( cant_anns == 0 )
            return;
        end

        if( strcmpi(questdlg('Are you sure ?', 'Delete annotations', 'No'), 'yes') )

            ann_idx = get(annotation_list_control, 'Value');
            ECG_struct = rmfield(ECG_struct, AnnNames{ann_idx,1});

            if( cant_anns == 1)
                % last annotation deleted
                ECG_struct.Default.time = [];
                AnnNames = {'Default' 'time'};
                set(annotation_list_control, 'string', '1 - Default' );
                set(annotation_under_edition_label, 'string', 'Annotation under edition: Default' )
                AnnNames_idx = 1;
                anns_under_edition = [];

            elseif( cant_anns > 1)
                aux_idx = 1:cant_anns;
                aux_idx(ann_idx) = [];
                AnnNames = AnnNames(aux_idx,:);
                ratios = ratios(aux_idx);
                annotations_ranking = annotations_ranking(aux_idx);

                cant_anns = size(AnnNames,1);
                aux_str = repmat( ' - ',cant_anns,1);

                set(annotation_list_control, 'string', [ char(cellstr(num2str((1:cant_anns)'))) aux_str char(AnnNames(:,1)) repmat( ' (',cant_anns,1) num2str(round(colvec(ratios * 1000))) aux_str num2str(colvec(annotations_ranking))  repmat( ')',cant_anns,1)  ] );

                AnnNames_idx = 1;
                set(annotation_under_edition_label, 'string', [ 'Annotation under edition: ' char(AnnNames( AnnNames_idx ,1)) ' (' num2str(ratios(AnnNames_idx)) ')' ])
                set(annotation_list_control, 'Value', AnnNames_idx);
                anns_under_edition = unique(round(colvec( ECG_struct.(AnnNames{AnnNames_idx,1}).(AnnNames{AnnNames_idx,2}) )));

            end

            if( isfield(ECG_struct, 'series_quality' ) )
                ECG_struct.series_quality.AnnNames = AnnNames;
                ECG_struct.series_quality.ratios = ratios;
            end

            undo_buffer_idx = 1;

            bRecEdited = true;
            bAnnsEdited = false;

            selected_hb_idx = [];

            Redraw();

        end

    end

    function ExportAnnotations(obj,event_obj)

        ann_idx = get(annotation_list_control, 'Value');

        lann_idx = length(ann_idx);

        if( lann_idx > 0 )

%             answer = inputdlg({'Exported filename', 'Annotations names (''ann_1'', ''ann_2'' ...)'}, ...
%                                'Export annotations', ...
%                                [1 60;               1 60 ], ...
%                                { ECG_struct.header.recname; rowvec(char(cellfun(@(a)(sprintf('''%s'' ',a)), AnnNames(ann_idx,1), 'UniformOutput',false))') });
%
%             if( isempty(answer) || any(cellfun(@(a)(isempty(a)), answer)) )
%                 update_title_efimero('Exportation canceled ...', 5 );
%                 return
%             end
%
%             exported_filename = [ recording_path filesep answer{1} ];
%             [~, exported_AnnNames] = regexp( answer{2}, '\''(\S+)\'' ', 'match', 'tokens');
%             exported_AnnNames = cellfun(@(a)(a{1}), exported_AnnNames, 'UniformOutput',false);

            if(bAnnsEdited)
                % flush updates before saving.
                update_annotations();
                bAnnsEdited = false;
                bRecEdited = false;
            end

            exported_filename = [ recording_path filesep ECG_struct.header.recname '_reviewed_annotations' ];

            while( exist( [exported_filename '.mat'], 'file') )
                exported_filename = [  exported_filename '_' datestr(datetime('now'), 'YYmmDDHHMMSS') ];
            end

            exported_AnnNames = arrayfun(@(a)( [ 'manual_' num2str(a) ] ), colvec(1:lann_idx), 'UniformOutput',false);

            exported_struct.series_quality.AnnNames = {};
            exported_struct.series_quality.ratios = [];
            exported_struct.series_quality.estimated_labs = {};

            jj = 1;
            for ii = 1:lann_idx

                exported_struct.(exported_AnnNames{jj}).time = unique( colvec( ECG_struct.(AnnNames{ann_idx(ii),1}).(AnnNames{ann_idx(ii),2}) ) );

                exported_struct.series_quality.AnnNames = [ exported_struct.series_quality.AnnNames; {exported_AnnNames{jj} 'time'} ];
                exported_struct.series_quality.ratios = [ exported_struct.series_quality.ratios; ratios(ann_idx(ii))];
                exported_struct.series_quality.estimated_labs = [ exported_struct.series_quality.estimated_labs; estimated_labs(ann_idx(ii)) ];
                jj = jj + 1;

            end

            exported_struct.series_quality.sampfreq = ECG_struct.header.freq;

            save(exported_filename, '-struct', 'exported_struct');
            update_title_efimero( sprintf('Exporting %s', exported_filename), 10 );

            % changes already saved
            bRecEdited = false;

        end

    end

    function MergeAnnotations(obj,event_obj)

        ann_idx = get(annotation_list_control, 'Value');

        if( length(ann_idx) > 1 )

            merged_detections = unique(round(colvec( ECG_struct.(AnnNames{ann_idx(1),1}).(AnnNames{ann_idx(1),2}) )));

            for ii = 2:length(ann_idx)

                detB = unique(round(colvec( ECG_struct.(AnnNames{ann_idx(ii),1}).(AnnNames{ann_idx(ii),2}) )));

                merged_detections = merge_QRS_detections(merged_detections, detB, ECG_struct.header);

            end

            aux_val = sum(~cellfun( @isempty, strfind( AnnNames(:,1), 'merged' )));

            aux_str = [ 'merged_' num2str(aux_val+1)];

            ECG_struct.(aux_str).time = merged_detections;

            AnnNames = [AnnNames; cellstr(aux_str) cellstr('time')];
            aux_all_anns = [all_annotations; {merged_detections}];

            if( isempty(ECG_w) )
                % only for short signals
                [ ratios, estimated_labs ] = CalcRRserieRatio(aux_all_anns, ECG_struct.header);
            else
                % ignore ratios and q measurements in long recordings.
                ratios = zeros(size(AnnNames,1),1);
                estimated_labs = cell(size(AnnNames,1),1);
            end

            [ratios, best_detections_idx] = sort(ratios, 'descend');

            aux_val = 1:length(ratios);

            [~, annotations_ranking] = sort(aux_val(best_detections_idx));

            all_annotations = aux_all_anns;

            AnnNames_idx = size(AnnNames,1);
            anns_under_edition = merged_detections;

            cant_anns = size(AnnNames,1);
            aux_str = repmat( ' - ',cant_anns,1);

            set(annotation_list_control, 'string', [ char(cellstr(num2str((1:cant_anns)'))) aux_str char(AnnNames(:,1)) repmat( ' (',cant_anns,1) num2str(round(colvec(ratios * 1000))) aux_str num2str(colvec(annotations_ranking))  repmat( ')',cant_anns,1)  ] );
            set(annotation_under_edition_label, 'string', [ 'Annotation under edition: ' char(AnnNames( AnnNames_idx ,1)) ' (' num2str(ratios(AnnNames_idx)) ')' ])

            set(annotation_list_control, 'Value', AnnNames_idx);

            hb_idx = 1;
            selected_hb_idx = [];

            undo_buffer_idx = 1;

            aux_val = anns_under_edition;

            bAnnsEdited = false;

            if( isempty(aux_val) )
                anns_under_edition = [];
                RRserie = {[]};
                RRserie_filt = {[]};
                all_annotations_selected_serie_location = [];
                serie_location_mask = [];
            else
                [RRserie, RRserie_filt ] = RR_calculation(anns_under_edition, ECG_struct.header.freq, RRserie_filt{1});
                RRserie = {RRserie * 1/ECG_struct.header.freq};
                RRserie_filt = {RRserie_filt};
            end
            all_annotations_selected = {anns_under_edition};
            RR_idx = { find( anns_under_edition >= start_idx &  anns_under_edition <= end_idx ) };

            bSeriesChange = true;

            undo_buffer_idx = 1;

            bRecEdited = true;
            bAnnsEdited = false;

            selected_hb_idx = [];

            Redraw();

        end

    end

%     function ChangeRecordingSelected(obj,event_obj)
%
%
%         if (strcmp(get(fig_hdl,'SelectionType'),'open'))
%             %Double click
%
%         else
%             %Single click
%
%             rec_selected = get(obj, 'Value');
%
%             if( rec_selected ~= rec_idx )
%                 % change of annotation
%
%                 if(bRecEdited)
%
%                     update_annotations();
%
%                     if( bLoadECG )
%                         update_title_efimero('Saving data ...', 5 );
%                         save(rec_path, '-struct', 'ECG_struct');
%                         update_title_efimero(['Saved ' rec_path], 5 );
%                     else
%
%                         if( isfield(ECG_struct, 'series_quality' ) )
%                             anns_struct.series_quality = ECG_struct.series_quality;
%                         end
%                         for ii = 1:size(AnnNames,1)
%                             anns_struct.(AnnNames{ii,1}) = ECG_struct.(AnnNames{ii,1});
%                         end
%                         assignin( 'caller', OutputVarName, anns_struct );
%                         update_title_efimero(sprintf('Saving ''%s'' variable in caller workspace', OutputVarName), 5 );
%
%                         bAnnsEdited = false;
%                         bRecEdited = false;
%
%                     end
%                 end
%
%                 rec_idx = get(recordings_control, 'Value' );
%
%                 DoRecording();
%
%
%             end
%
%         end
%
%     end
%
    function ChangeLeadsSelected(obj,event_obj)

        if (strcmp(get(fig_hdl,'SelectionType'),'open'))
            %Double click

        else
            %Single click

            leads_selected = get(obj, 'Value');

            if(length(leads_selected ) == 1 && ( length(lead_idx) ~= length(leads_selected) || leads_selected ~= lead_idx) )
                % change of annotation

                standarize_ECG_view = false;

                lead_idx = leads_selected;

                cla(ECG_axes_hdl);

                if( bSeries )
                    this_all_anns = all_annotations_selected_serie_location;
                    aux_val = this_all_anns{1};
                    aux_val(serie_location_mask) = nan;
                    this_all_anns{1} = aux_val;
                else
                    this_all_anns = all_annotations_selected;
                end

                if( ~bLockECG )
                    ECG_limits = [];
                end

                if( isempty(anns_under_edition_idx) )
                    [ECG_hdl, ECG_limits ] = plot_ecg_heartbeat(ECG_struct.signal, lead_idx, this_all_anns, start_idx, [] , hb_detail_window, ECG_struct.header, filtro, ECG_axes_hdl, ECG_limits);
                else
                    [ECG_hdl, ECG_limits ] = plot_ecg_heartbeat(ECG_struct.signal, lead_idx, this_all_anns, start_idx, anns_under_edition_idx(hb_idx) , hb_detail_window , ECG_struct.header, filtro, ECG_axes_hdl, ECG_limits);
                end

                title(ECG_axes_hdl, ['Heartbeat ' num2str(hb_idx) ' : Lead ' ECG_struct.header.desc(lead_idx,:)] )

                cellfun(@(a)( set(a,'ButtonDownFcn',@inspect_ECG)), ECG_hdl);
                set(ECG_axes_hdl,'ButtonDownFcn',@inspect_ECG);

            elseif(length(leads_selected ) > 1)

                lead_idx = leads_selected;

                cla(ECG_axes_hdl);

                if( bSeries )
                    this_all_anns = all_annotations_selected_serie_location;
                    aux_val = this_all_anns{1};
                    aux_val(serie_location_mask) = nan;
                    this_all_anns{1} = aux_val;
                else
                    this_all_anns = all_annotations_selected;
                end

                if( ~bLockECG )
                    ECG_limits = [];
                end

                if( isempty(anns_under_edition_idx) )
                    [ECG_hdl, ECG_limits ] = plot_ecg_heartbeat(ECG_struct.signal, lead_idx, this_all_anns, start_idx, [] , hb_detail_window, ECG_struct.header, filtro, ECG_axes_hdl, ECG_limits);
                else
                    [ECG_hdl, ECG_limits ] = plot_ecg_heartbeat(ECG_struct.signal, lead_idx, this_all_anns, start_idx, anns_under_edition_idx(hb_idx) , hb_detail_window , ECG_struct.header, filtro, ECG_axes_hdl, ECG_limits);
                end

                aux_str = rowvec(colvec([repmat(',', length(lead_idx), 1) ECG_struct.header.desc(lead_idx,:) ]'));
                title(ECG_axes_hdl, ['Heartbeat ' num2str(hb_idx) ' : Leads ' aux_str(2:end) ] )

                cellfun(@(a)( set(a,'ButtonDownFcn',@inspect_ECG)), ECG_hdl);
                set(ECG_axes_hdl,'ButtonDownFcn',@inspect_ECG);

            end

        end

    end

    function update_annotations()

        corrected_prefix = 'corrected_';

        if( bSeries )
            aux_val = all_annotations_selected_serie_location{1};
            aux_val(serie_location_mask) = nan;
            aux_val = ( aux_val - anns_under_edition) / ECG_struct.header.freq;
            aux_val = [anns_under_edition aux_val];
        else
            aux_val = unique(round(colvec( anns_under_edition )));
        end

        if( isempty(strfind(AnnNames{AnnNames_idx,1}, corrected_prefix )) )
            % modifying an original annotation, duplicate annotation

            ii = 1;
            while( isfield(ECG_struct, [ corrected_prefix AnnNames{AnnNames_idx,1}]) )
                corrected_prefix = [corrected_prefix 'v' num2str(ii) '_' ];
                ii = ii+1;
            end

            ECG_struct.([ corrected_prefix AnnNames{AnnNames_idx,1}]).(AnnNames{AnnNames_idx,2}) = aux_val;
%             ECG_struct.([ corrected_prefix AnnNames{AnnNames_idx,1}]) = ECG_struct.(AnnNames{AnnNames_idx,1});
%             ECG_struct = rmfield(ECG_struct, AnnNames{AnnNames_idx,1});

            % add it to the ann list
%             AnnNames( AnnNames_idx , : ) = { [ corrected_prefix AnnNames{AnnNames_idx,1}] AnnNames{AnnNames_idx,2} };
            AnnNames = [{ [ corrected_prefix AnnNames{AnnNames_idx,1}] AnnNames{AnnNames_idx,2} }; AnnNames];
            ratios = [ ratios(AnnNames_idx); ratios ];
            AnnNames_idx = 1;
            annotations_ranking = [ 1; colvec(annotations_ranking+1) ];

            cant_anns = size(AnnNames,1);
            aux_str = repmat( ' - ',cant_anns,1);
            set(annotation_list_control, 'string', [ char(cellstr(num2str((1:cant_anns)'))) aux_str char(AnnNames(:,1)) repmat( ' (',cant_anns,1) num2str(round(colvec(ratios * 1000))) aux_str num2str(colvec(annotations_ranking))  repmat( ')',cant_anns,1)  ] );

            if( isfield(ECG_struct, 'series_quality' ) )
                ECG_struct.series_quality.AnnNames = AnnNames;
                ECG_struct.series_quality.ratios = ratios;
            end

        else
            % updating an already corrected ann.
            ECG_struct.(AnnNames{AnnNames_idx,1}).(AnnNames{AnnNames_idx,2}) = aux_val;
        end

    end

    function bAux = IsClicked(this_hdl, this_xy )

        dfltUnits = get(this_hdl, 'Units');

        set(this_hdl, 'Units', 'pixels');

        aux_pos = get( this_hdl, 'Position');

        bAux = this_xy(1) >= aux_pos(1) & this_xy(1) <= (aux_pos(1) + aux_pos(3) ) & this_xy(2) >= aux_pos(2) & this_xy(2) <= (aux_pos(2) + aux_pos(4) );

        set(this_hdl, 'Units', dfltUnits);

    end

    function DragMouseBegin()

        if ( ~fIsDragAllowed )

            [drag_start_x, drag_start_y ]= GetCursorCoordOnWindow();

            curr_fig = gcf;
            axes_hdl_selector_idx = nan;

            update_title_efimero( sprintf( ' %d - %d', drag_start_x, drag_start_y), 5);

            for ii = 1:size(axes_hdl,1)

                if( curr_fig == axes_hdl(ii,2) && ishandle(axes_hdl(ii,1)) && IsClicked(axes_hdl(ii,1), [drag_start_x, drag_start_y ]) )

                    axes_hdl_selector_idx = ii;
                    break
                end

            end

            if( isnan(axes_hdl_selector_idx) )
                return
            end

            point = get(axes_hdl(axes_hdl_selector_idx, 1),'CurrentPoint');

            x_timeScroll_units = point(1,1);

            if (strcmp(get(axes_hdl(axes_hdl_selector_idx,2),'SelectionType'),'alt'))
                bChangeWin = true;
            else
                bChangeWin = false;
            end

            PrevStateWindowButtonMotionFcn = get(axes_hdl(axes_hdl_selector_idx,2), 'WindowButtonMotionFcn');
            set(axes_hdl(axes_hdl_selector_idx,2), 'WindowButtonMotionFcn', @WindowButtonMotionCallback2D);

            fIsDragAllowed = true;

        end

    end

    function DragMouseEnd()

        if fIsDragAllowed

            fIsDragAllowed = false;

            if( axes_hdl(axes_hdl_selector_idx,2) == fig_hdl )
                % Main figure 1
                ECG_struct.signal = ECG_w.read_signal(start_idx, end_idx + 10 * ECG_struct.header.freq );

%     dbstop if caught error
%     dbstop if error

                Redraw();

            else
                % figure Search Pattern

                % RR global Pattern Match part
                if( axes_hdl_selector_idx ==  RR_global_PM_k )

                    llead_idx = length(lead_idx);

                    win_sample = round(20*ECG_struct.header.freq / ndown_similarity);
                    win_sample_2 = round(3*ECG_struct.header.freq / ndown_similarity);
                    break_sample = round(1*ECG_struct.header.freq / ndown_similarity);
                    n_excerpts = 5;
                    aux_idx = 1:win_sample;
                    aux_windows = randsample( round((start_idx_PM:end_idx_PM)*1/ndown_similarity), n_excerpts);
                    sig_breaks = nan(break_sample, llead_idx + 1 );

                    dt_samp = round(proximity_thr_PM*ECG_struct.header.freq/ ndown_similarity);
                    prex_win_start = round(0.2*ECG_struct.header.freq/ ndown_similarity);
                    prex_win_end = round(1.5*ECG_struct.header.freq/ ndown_similarity);
                    aux_pack = [];

                    similarity_min = realmax;

                    if( isempty(ECG_w) )

                        aux_val = sig_breaks;
                        for aux_start = (aux_windows+1)
            %                 aux_val1 = [bsxfun( @minus, ECG(aux_start:(aux_start+win_sample),:), mean(ECG(aux_idx))) similarity(aux_start:(aux_start+win_sample))-mean(similarity(aux_start:(aux_start+win_sample))) ];
                            aux_val1 = [bsxfun( @minus, ECG(aux_start:(aux_start+win_sample),:), mean(ECG(aux_idx))) similarity(aux_start:(aux_start+win_sample)) ];

                            similarity_min = min([ similarity_min; colvec(aux_val1( aux_val1(:,end) > 0, end)) ]);

                            aux_val = [aux_val; aux_val1; sig_breaks ];

                            aux_pack = [aux_pack; pack_signal(ECG(:,lead_idx), anns_under_edition( anns_under_edition >= aux_start &  anns_under_edition <= (aux_start+win_sample) ), [ prex_win_start prex_win_end ], true) ];

                        end

                    else

                        aux_w = ECGwrapper('recording_name', similarity);
                        aux_w_ecg = ECGwrapper('recording_name', resampled_ECG_similarity);

                        aux_val = sig_breaks;

                        for aux_start = (aux_windows+1)
            %                 aux_val1 = [aux_w_ecg.read_signal( aux_start, aux_start + win_sample ) aux_w.read_signal( aux_start, aux_start + win_sample ) ];
            %                 aux_val1 = [aux_val1(:, lead_idx) aux_w.read_signal( aux_start, aux_start + win_sample ) ];

                            aux_val1 = aux_w_ecg.read_signal( aux_start, aux_start + win_sample );

                            aux_anns = round((anns_under_edition( anns_under_edition >= ndown_similarity*aux_start &  anns_under_edition <= ndown_similarity*(aux_start+win_sample) ) - ndown_similarity*aux_start + 1) / ndown_similarity );

%                             aux_val1 = aux_val1(:,lead_idx);
                            aux_val1 = aux_val1(:,1);

                            aux_pack = [aux_pack squeeze(pack_signal(aux_val1, aux_anns, [ prex_win_start prex_win_end ], true)) ];

                            aux_val1 = aux_val1(1:(win_sample_2+1),:);

                            aux_val1 = [aux_val1 aux_w.read_signal( aux_start, aux_start + win_sample_2 ) ];

                            similarity_min = min([ similarity_min; colvec(aux_val1( aux_val1(:,end) > 0, end)) ]);

                            aux_val = [aux_val; [bsxfun(@minus, aux_val1(:,1:end-1), mean(aux_val1(:,1:end-1)) ) aux_val1(:,end) ]; sig_breaks ];
                        end
                    end

                    aux_similarity_max = aux_w.read_signal( 1, aux_w.ECG_header.nsamp );

                    aux_w.ECGtaskHandle = 'arbitrary_function';
                    aux_w.cacheResults = false;
                    aux_w.ECGtaskHandle.lead_idx = 1;
                    % generate QRS detections
                    aux_w.ECGtaskHandle.signal_payload = false;
                    aux_w.user_string = ['modmax_calc_for_leads_' num2str(sort(lead_idx)) ];
                    aux_w.ECGtaskHandle.function_pointer = @arb_modmax;

                    aux_payload.xlims = [start_idx_PM end_idx_PM];
                    aux_payload.thr = median( aux_similarity_max );
                    % for faster computation avoid time restriction in the first pass
                    aux_payload.detection_threshold = proximity_thr_PM;
                    % get only the first n_greater matches of the pattern
%                     aux_payload.n_greater = round((end_idx_PM - start_idx_PM + 1 ) / round(1.0 * proximity_thr_PM * aux_w.ECG_header.freq) );
                    aux_w.ECGtaskHandle.payload = aux_payload;
                    aux_w.Run

                    if( isempty(aux_w.Result_files) )
                        close(figPatternMatch_hdl)
                        update_title_efimero('Pattern match failed: ModMax fcn failed.', 10 );
                        return
                    end

                    % asume that the whole series keep in mem.
                    aux_max_idx = load(aux_w.Result_files{1});
                    aux_max_idx = aux_max_idx.result;
                    aux_similarity_max = aux_similarity_max(aux_max_idx);

                    prctile_grid = prctile( aux_similarity_max, 1:100 );

                    grid_step = median(diff(prctile_grid));

                    thr_grid = min(aux_similarity_max): grid_step:prctile(aux_similarity_max,95);

                    hist_max_values = histcounts(aux_similarity_max, thr_grid);

                    first_bin_idx = 2;

                    [thr_idx, thr_max ] = modmax( colvec( hist_max_values ) , first_bin_idx, 0, 0, [], 10);

                    % mass center of the distribution, probably the value where the
                    % patterns under search are located.
                    thr_idx_expected = floor(rowvec(thr_idx) * colvec(thr_max) *1/sum(thr_max));

                    aux_seq = 1:length(thr_grid);

                    min_hist_max_values = min( hist_max_values( aux_seq >= first_bin_idx & aux_seq < thr_idx_expected) );

                    % in case several indexes match the boolean condition, the mean
                    % index is the center of all those indexes. Other criteria such as
                    % min or max can be explored
                    thr_min_idx = round(mean(find(aux_seq >= first_bin_idx & aux_seq < thr_idx_expected & [hist_max_values 0] == min_hist_max_values)));

                    similarity_thr = thr_grid(thr_min_idx );

                    % compress dynamic range of detection signal
                    aux_val(:, end) = log10( similarity_min +  aux_val(:, end) );

                    similarity_scale_thr = max(abs(aux_val));
                    similarity_scale_thr(end) = log10( similarity_min + max(thr_grid));
                    aux_val = bsxfun(@times, aux_val, 1./similarity_scale_thr);
                    aux_val(:,1:llead_idx) = (aux_val(:,1:llead_idx)*0.5) - 0.5;

                    %% similarity update

                    figPatternMatch_hdl.CurrentAxes = similarity_hdl;

                    cla(similarity_hdl);

                    aux_hdls = plot(similarity_hdl, aux_val, 'ButtonDownFcn', @ButtonDownSimilarity);

                    hold(similarity_hdl, 'on')
                    similarity_thr_hdl = plot(similarity_hdl, get(similarity_hdl, 'Xlim'), log10( similarity_min +  [similarity_thr similarity_thr] )*1/similarity_scale_thr(end), '--r', 'ButtonDownFcn', @ButtonDownSimilarity);
                    hold(similarity_hdl, 'off')

                    title('Select the detection threshold to use in the similarity function')

                    set(similarity_hdl, 'Ytick', []);

                    aux_val = sort([ break_sample+(0:(win_sample+break_sample):(n_excerpts-1)*(win_sample+break_sample)) break_sample+win_sample+(0:(win_sample+break_sample):(n_excerpts-1)*(win_sample+break_sample)) length(aux_val) ]);
                    set(similarity_hdl, 'Xtick', aux_val );

                    aux_val = sort([ aux_windows (aux_windows + win_sample) ECG_struct.header.nsamp]);
                    set(similarity_hdl, 'XtickLabel', Seconds2HMS( aux_val ./ ECG_struct.header.freq ));

                    legend(aux_hdls, {'ECG'; 'Similarity'} );

                    set(similarity_hdl, 'ButtonDownFcn', @ButtonDownSimilarity);

                    %% Histograma de similaridad update

                    figPatternMatch_hdl.CurrentAxes = similarity_hist_hdl;

                    aux_grid = linspace(thr_grid(1), thr_grid(end), min(60, length(thr_grid)) );

                    cla(similarity_hist_hdl);

                    histogram(similarity_hist_hdl, aux_similarity_max(aux_similarity_max < similarity_thr), aux_grid,  'ButtonDownFcn', @ButtonDownSimilarity_Hist);

                    hold(similarity_hist_hdl, 'on')
                    histogram(similarity_hist_hdl, aux_similarity_max(aux_similarity_max >= similarity_thr), aux_grid, 'ButtonDownFcn', @ButtonDownSimilarity_Hist);
                    similarity_hist_thr_hdl = plot(similarity_hist_hdl, [similarity_thr similarity_thr], get(similarity_hist_hdl, 'Ylim') , '--r', 'ButtonDownFcn', @ButtonDownSimilarity_Hist);
                    hold(similarity_hist_hdl, 'off')

                    legend( {'probably NOT pattern' 'probably pattern MATCH' 'threshold' } )
                    title('Detection threshold histogram view')

                    set(similarity_hist_hdl, 'Ytick', []);

                    set(similarity_hist_hdl, 'Xtick', []);

                    set(similarity_hist_hdl, 'ButtonDownFcn', @ButtonDownSimilarity_Hist);

                    %% proximity update

                    figPatternMatch_hdl.CurrentAxes = proximity_hdl;

                    dt_samp = round(proximity_thr_PM*ECG_struct.header.freq/ndown_similarity);
                    prex_win_start = round(0.2*ECG_struct.header.freq/ ndown_similarity);
                    prex_win_end = round(1.5*ECG_struct.header.freq/ ndown_similarity);

                    cla(proximity_hdl);

                    plot(proximity_hdl, aux_pack, 'ButtonDownFcn', @ButtonDownCallbackDefault )

                    set(proximity_hdl, 'Ytick', []);

                    aux_Xtick = round(linspace(prex_win_start, prex_win_end, 4));
                    set(proximity_hdl, 'Xtick', aux_Xtick);
                    set(proximity_hdl, 'XtickLabel', Seconds2HMS((aux_Xtick-prex_win_start)*ndown_similarity/ECG_struct.header.freq,1));

                    limits = ylim();

                    aux_box_lim = [limits(1) + 0.1*abs(diff(limits)) limits(2) - 0.1*abs(diff(limits)) ];
                    proximity_patch_hdl = patch(proximity_hdl, [prex_win_start prex_win_start repmat(dt_samp + prex_win_start,1,2) prex_win_start ], [aux_box_lim(1) aux_box_lim(2) aux_box_lim(2) aux_box_lim(1) aux_box_lim(1)], [183 241 171]/255, 'EdgeColor', [0 1 0], 'ButtonDownFcn', @ButtonDownCallbackDefault, 'LineWidth', 0.5);
                    uistack(proximity_patch_hdl, 'bottom');

                    xlim(proximity_hdl, [ 1 round(1.2 * (prex_win_start + dt_samp)) ] )

                    title(proximity_hdl, 'Click and drag the green box to select the min interval between QRS');

                    prev_units = get(proximity_hdl, 'Units');
                    set(proximity_hdl, 'Units', 'pixels');
                    this_pos = get(proximity_hdl, 'Position');
                    axes_hdl( proximity_k, 3) = max_proximity_win_size / (this_pos(3));
                    set(proximity_hdl, 'Units', prev_units);

                    set(proximity_hdl, 'ButtonDownFcn', @ButtonDownCallbackDefault);

                end

            end

            prev_val_drag = nan;

            set(axes_hdl(axes_hdl_selector_idx,2), 'WindowButtonMotionFcn', PrevStateWindowButtonMotionFcn);

            axes_hdl_selector_idx = nan;

        end

    end

    function ButtonDownCallbackDefault(obj,event_obj)

%         update_title_efimero( 'BD', 5);

        DragMouseBegin();

        ProcessDrag();

    end

    function SrchPattButtonDownCallback(obj,event_obj)

        if (strcmp(get(figPatternMatch_hdl,'SelectionType'),'alt'))
            bChangeWin = true;
        else
            bChangeWin = false;
        end

        DragMouseBegin();

        ProcessDrag();

    end

    function SrchPattButtonUpCallback(obj,event_obj)

        DragMouseEnd();

    end

    function ChangeAnnotationsSelected(obj,event_obj)

        if (strcmp(get(fig_hdl,'SelectionType'),'open'))
            %Double click

            answer = char(inputdlg([ 'Enter the new name of the annotation ' char(AnnNames( AnnNames_idx ,1)) ], 'Change annotation name', 1, AnnNames( AnnNames_idx ,1)) );

            if( ~isempty(answer) && ischar(answer) )
                ann_idx = get(annotation_list_control, 'Value');
                ECG_struct.(answer) = ECG_struct.(AnnNames{ann_idx,1});
                ECG_struct = rmfield(ECG_struct, AnnNames{ann_idx,1});

                AnnNames{ ann_idx ,1} = answer;

                if( isfield(ECG_struct, 'series_quality' ) )
                    ECG_struct.series_quality.AnnNames = AnnNames;
                end
                cant_anns = size(AnnNames,1);
                aux_str = repmat( ' - ',cant_anns,1);

                if( isempty(ratios) )
                    set(annotation_list_control, 'string', [ char(cellstr(num2str((1:cant_anns)'))) aux_str char(AnnNames(:,1))   ] );
                    set(annotation_under_edition_label, 'string', [ 'Annotation under edition: ' char(AnnNames( AnnNames_idx ,1)) ])
                else
                    set(annotation_list_control, 'string', [ char(cellstr(num2str((1:cant_anns)'))) aux_str char(AnnNames(:,1)) repmat( ' (',cant_anns,1) num2str(round(colvec(ratios * 1000))) aux_str num2str(colvec(annotations_ranking))  repmat( ')',cant_anns,1)  ] );
                    set(annotation_under_edition_label, 'string', [ 'Annotation under edition: ' char(AnnNames( AnnNames_idx ,1)) ' (' num2str(ratios(AnnNames_idx)) ')' ])
                end

                if(~bAnnsEdited)
                    update_annotations();
                end

                bAnnsEdited = true;
                bRecEdited = true;

            end

        else
            %Single click

            anns_selected = get(obj, 'Value');

            if(length(anns_selected ) == 1 && anns_selected ~= AnnNames_idx )
                % change of annotation

                if(bAnnsEdited)
                    update_annotations();
                end

                AnnNames_idx = anns_selected;

    %             disp( ['Using ' AnnNames{AnnNames_idx,1} ' annotations (' num2str(ratios(AnnNames_idx)) ')'] );

                set(annotation_under_edition_label, 'string', [ 'Annotation under edition: ' char(AnnNames( AnnNames_idx ,1)) ' (' num2str(ratios(AnnNames_idx)) ')' ])

                undo_buffer_idx = 1;

                aux_val = ECG_struct.(AnnNames{AnnNames_idx,1}).(AnnNames{AnnNames_idx,2});

                bAnnsEdited = false;

                selected_hb_idx = [];

                if( isempty(aux_val) )

                    anns_under_edition = [];
                    RRserie = {[]};
                    RRserie_filt = {[]};
                    all_annotations_selected_serie_location = [];
                    serie_location_mask = [];

                else

                    if( bSeries )
                        [anns_under_edition, aux_idx ]= unique(round(colvec( aux_val(:,1) )));
                        RRserie = { aux_val(aux_idx,2) };

                        % absolute position
                        all_annotations_selected_serie_location = {anns_under_edition + round( aux_val(aux_idx,2) * ECG_struct.header.freq) };
                        serie_location_mask = false(size(anns_under_edition));
                    else
                        anns_under_edition = unique(round(colvec( aux_val )));
                        [RRserie, RRserie_filt ] = RR_calculation(anns_under_edition, ECG_struct.header.freq, RRserie_filt{1});
                        RRserie = {RRserie * 1/ECG_struct.header.freq};
                        RRserie_filt = {RRserie_filt};

                    end

                end

                all_annotations_selected = {anns_under_edition};
                RR_idx = { find( anns_under_edition >= start_idx &  anns_under_edition <= end_idx ) };

                hb_idx = 1;

                bSeriesChange = true;

                Redraw();

            elseif(length(anns_selected ) > 1)

                aux_anns = {anns_under_edition};
                if( bSeries )
                    aux_val = ECG_struct.(AnnNames{AnnNames_idx,1}).(AnnNames{AnnNames_idx,2});
                    aux_anns2 = { aux_val(:,2) };
                end
                anns_selected( anns_selected == AnnNames_idx) = [];

                for ii = rowvec(anns_selected)
                    aux_val = ECG_struct.(AnnNames{ii,1}).(AnnNames{ii,2});
                    aux_anns = [aux_anns; ...
                                {aux_val(:,1)}
                                ];
                    if( bSeries )
                        aux_anns2 = [aux_anns2; ...
                                    {aux_val(:,2)}
                                    ];

                    end

                end

                if( bSeries )
                    all_annotations_selected_serie_location = cellfun( @(a,b)(a + round( b * ECG_struct.header.freq) ), aux_anns, aux_anns2, 'UniformOutput', false);
                end

                all_annotations_selected = aux_anns;

                RR_idx = cellfun( @(this_anns)( find( this_anns >= start_idx &  this_anns <= end_idx ) ), all_annotations_selected, 'UniformOutput', false);

                if( bSeries )
                    RRserie = aux_anns2;
                else
                    [RRserie, RRserie_filt ]= cellfun( @(this_anns)( RR_calculation(this_anns, ECG_struct.header.freq) ), all_annotations_selected, 'UniformOutput', false);
                    RRserie = cellfun( @(a)( a * (1/ECG_struct.header.freq) ), RRserie , 'UniformOutput', false);
                end

                bSeriesChange = true;

                Redraw();

            end

        end
    end

    function update_title_efimero( strTitle, delay )

        if( ~isempty(title_efimero_hdl) && ~isempty(ancestor(title_efimero_hdl,'figure')) && gcf == ancestor(title_efimero_hdl,'figure') && ishandle(title_efimero_hdl) )
            set(title_efimero_hdl, 'String',strTitle )
            set(title_efimero_hdl, 'Visible', 'on');
        else

            title_efimero_hdl = annotation( 'textbox', [0 0.98 0.3 0.01 ], ...
                                  'String', strTitle, ...
                                  'Tag', 'title_efimero', ...
                                  'FontSize', 8, ...
                                  'Interpreter', 'none', ...
                                  'FitBoxToText', 'on', ...
                                  'HorizontalAlignment', 'left', ...
                                  'EdgeColor', 'none', ...
                                  'BackgroundColor', 'r' );

        end

        if( ~isinf(delay) && strcmpi(my_timer.Running, 'off') )
            my_timer.StartDelay = delay;
            start(my_timer)
        end

    end

    function timer_fcn(obj,event_obj)

        set(title_efimero_hdl, 'Visible', 'off');

%         if(~bPreserveFix)
%             % allow edition of the closer wave
%             bFixedWave = false;
%         end

    end

end