Return plot handles at figure close

I have App with a Plot button that executes a plotting routine when it is pushed. The PlotPushDown callback creates a figure with several subplots. For each plot command i return the plot handle and store it. Upon closing the figure, I would like to return the latest plot handles. I am using BrushData, so the plot handles can change with user interaction. Upon closing the figure I need to access the latest BrushData for more data processing.

function PlotButtonPushed(app, event)
                  %%Plot all source data for a given weather property %%

                    % Create figure
                    f = figure('CloseRequestFcn',@getBrushData); hold on; brush on;

                    % If User Input is selected, adjust length by -1
                    if any(strcmp(app.ListBox.Value,'User Input'))
                        n = length(app.ListBox.Value) - 1;
                    else
                        n = length(app.ListBox.Value);
                    end

                    % Plot
                    switch app.DropDown.Value
                        case 'Pressure'                    
                            for i = 1:length(app.ListBox.Value)
                                switch app.ListBox.Value{i}
                                    case 'TRAP'
                                        subplot(n,1,i)
                                        h{i} = plot(app.allData.trapTime,app.allData.trapPressure,'LineWidth',2);
                                        h{i}.Tag = 'Time';
                                        title('TRAP')
                                        xlabel('Time (s)')
                                        ylabel('Pressure (psia)')
                                        xlim([-10 10])
                                        grid on;

                                        tmp{i} = zeros(1,length(app.allData.trapTime));
                                        tmp{i}(app.t0Data.trapIDX) = 1;
                                        h{i}.BrushData = tmp{i};
                                    case 'Balloon'
                                        subplot(n,1,i)
                                        h{i} = plot(app.allData.balloonAltitude,app.allData.balloonPressure,'LineWidth',2);
                                        h{i}.Tag = 'Altitude';
                                        title('Balloon Data')
                                        xlabel('Altitude (ft)')
                                        ylabel('Pressure (psia)')
                                        xlim([0 600])
                                        grid on;
                                    case 'Measured'
                                        subplot(n,1,i)
                                        h{i} = plot(app.allData.measurementTime,app.allData.measurementPressure,'LineWidth',2);
                                        h{i}.Tag = 'Time';
                                        title('Measurement Data')
                                        xlabel('Time (s)')
                                        ylabel('Pressure (psia)')
                                        xlim([-10 10])
                                        grid on;

                                        tmp{i} = zeros(1,length(app.allData.measurementTime));
                                        tmp{i}(app.t0Data.measurementIDX) = 1;
                                        h{i}.BrushData = tmp{i};
                                    case 'User Input'
                                        for j = 1:length(app.ListBox.Value) - 1
                                            subplot(n,1,j); hold on;
                                            if strcmp(h{j}.Tag,'Time')
                                                plot(0,app.pInput.Value,'o','MarkerSize',10,'MarkerEdgeColor','r','MarkerFaceColor','g')
                                            elseif strcmp(h{j}.Tag,'Altitude')
                                                plot(app.t0Data.Altitude,app.pInput.Value,'o','MarkerSize',10,'MarkerEdgeColor','r','MarkerFaceColor','g')
                                            end
                                        end
                                end

                            end
                        case 'Temperature'
                        case 'Wind Speed'
                        case 'Wind Direction'
                        case 'Relative Humidity'
                        case 'Dew Point'
                    end

                    waitfor(f);

    end

function getBrushData(src,evt)
% setappdata(0,'h',h)
disp('aaa')
closereq
end

After the waitfor(f) command, I need access to the last plot handles (h) for more data processing.

Is there a way to achieve this? I have tried via the CloseRequestFcn, but I can't seem to get it to work. Is there something I need to do, or is there a better way?

Answer 1

[Chris Nemecek]

Here is the way I solved this issue.

In the App:

function PlotButtonPushed(app,event)
f = figure('CloseRequestFcn',@getBrushData); hold on; brush on;
% plot stuff here
waitfor(f);
end

CloseRequestFcn:

function getBrushData(src,evt)
f=findobj(gcf,'Type','line');
for i = 1:length(f)
  brushedData{i} = f(i).BrushData; % Get brush data info
  identifier{i} = f(i).Parent.Title.String; % Get subplot title
  brushIndices{i} = find(brushedData{i}); % Get indices that are brushed
  setappdata(0,'identifier',identifier)
  setappdata(0,'brushedData',brushedData)
  setappdata(0,'brushIndices',brushIndices)
  closereq
end
end