MATLAB: How to convert a figure into a uifigure

app designerconversionfigureMATLABuifigure

Hello there

I am trying to load a saved figure in app designer (Axes Object). Is there a simple and easy way to do that?

Here's my example:

fig = openfig('storage/psychplot_base.fig', 'invisible');
plot(app.UIaxes, fig);

Thanks in advance

Mario

Best Answer

You can use copyobj() to copy the content on the external axis on to your UIAxis. This will not copy axis labels, titile, or legends but those items can be copied separately.

Step 1 is to open your external figure and get the axis handle. I'm assuming there is only 1 axis on the figure, otherwise this will need to be adapted to get the handle of the specific axis being copied.

fig = openfig('storage/psychplot_base.fig', 'invisible');
ax = findobj(fig,'Type','Axes');  % assuming 1 and only 1 handle is returned

Step 2 is to copy the children of the external axes to the app's UIAxes.

% Assuming app.UIAxes is the handle to your axes, 
copyobj(ax.Children, app.UIAxes)

Step 3 is to delete the external figure

delete(fig)

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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')

MATLAB: Copy an independant figure to panel in app designer

You have to copy all desired objects from the figure listed in the figure's "children" property.

Here's a demo that copies all objects from 'fig' (blue, regular figure) to 'uifig' (yellow, uifigure).

You probably only want some of the objects which you can select from fig.Children.

uifig = uifigure('Color',[1 1 .8])
fig = figure('color',[.8 1 1]);
ax = axes(fig);
plot(ax, magic(3))
legend(ax)
colorbar(ax)
copyobj(fig.Children, uifig)

Best Answer

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MATLAB: How to plot a graph on the app designer

MATLAB: Copy an independant figure to panel in app designer

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