MATLAB: Saving figure in app designer.

app designerfigurelegendMATLAB

Hi, I want to save a figure in app designer called app.ScanDataPlot.

The code below saves the figure (but just the data, with x and y axes but with no titles). I also want to include the legend of the graph (for the different curves) and include the x and y axes titles. How can I do this?

The code does not save the figure as .png, just as .fig. Any ideas how to get the figure in .png format also?

 % Create a temporary figure with axes.
            figScan = figure;
            figAxes = axes(figScan);
            
            % Copy all UIAxes children, take over axes limits and aspect ratio.
            allChildren = app.ScanDataPlot.XAxis.Parent.Children;
            copyobj(allChildren, figAxes)
            figAxes.XLim = app.ScanDataPlot.XLim;
            figAxes.YLim = app.ScanDataPlot.YLim;
            figAxes.ZLim = app.ScanDataPlot.ZLim;
            figAxes.DataAspectRatio = app.ScanDataPlot.DataAspectRatio;
            
            % Save as png and fig files.
            fileName = fullfile([pathway,'\data','\fig-file\'], 'WorstLocation.fig');
            saveas(figScan, fileName, 'png');
            savefig(figScan, fileName);

Best Answer

You might want to take a look at this contribution:

https://nl.mathworks.com/matlabcentral/fileexchange/73103-copyuiaxes

Regarding the saving as png: I guess that it does not work because fileName already has the fig extension.

Could you give this a try:

fileName = fullfile([pathway,'\data','\fig-file\'], 'WorstLocation');

saveas(figScan, [fileName '.png'], 'png');

savefig(figScan, [fileName '.fig']);

Related Solutions

MATLAB: Saving the plot after modifications in the GUI – Matlab

Hi Adam,

In the below example, first you need to copy the UIAxes to the temporary figure. And then you can save it as *.png.

function saveplot_Callback(app, event)
% Create a temporary figure with axes.
fig = figure;
figAxes = axes(fig);
% Copy children (lines).
copyobj(app.UIAxes.Children, figAxes);
% Copy titles and labels. You can modify this based on your requirement.
copyobj([app.UIAxes.XLabel app.UIAxes.YLabel app.UIAxes.Title], figAxes);
% Save as *.png file.
saveas(fig, 'myFigure.png');
close(fig);
end

MATLAB: How to plot a graph on the app designer

Use copyobj() to copy all of the children from your saved figure's axes to the UIAxes.

Here's a functional demo.

% Create a figure, save it, and close it. 
mainFig = figure(); 
plot(magic(4),'-o')
savefig('MainFigure.fig') % use full path whenever possible; see fullfile()

close(mainFig)

% 1) Create a UIFigure and UIAxes (For app designer, skip this step)
% 2) Open the main figure in an invisible state.
% 3) Get the axis handle of the figure.
% 4) Copy all children of the axis handle to the UIAxes.
% 5) Close the invisible main figure.
% 1) Create UIAxes; Skip this step if you're using app designer.
app.UIFigure = uifigure(); 
app.UIAxes = uiaxes(app.UIFigure); 
% 2) OPen the main figure, invisible.
figHandle = openfig('MainFigure.fig','invisible') % use full path whenever possible; see fullfile()
% 3) Get all axis handles that belong to the invisible figure
axesHandle = findobj(figHandle,'type','axes'); 
%4) Copy all children of the axis to your UIFigure.
% If there are more then 1 axes found on the invisible
% figure, this will only copy the first axes listed.
% Replace input #2 with your UIAxes handle
copyobj(axesHandle(1).Children, app.UIAxes);
% Close the invisible figure
close(figHandle)

To delete the demo figure from you system,

delete('MainFigure.fig')

Best Answer

Related Solutions

MATLAB: Saving the plot after modifications in the GUI – Matlab

MATLAB: How to plot a graph on the app designer

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