MATLAB: How to use ginput in app designer

ginput app

I would like to select a range of points from one particular UIAxes in my app.

I have tried to use ginput ([x,y=ginput]), but the applications prompts an additional empty plot to select the range of points. How can I point an specific UIAxes?

Kind Regards

Best Answer

You can't. If you check the documentation of ginput, you will see it can not take a predefined axes as an input argument:

https://www.mathworks.com/help/matlab/ref/ginput.html

There might be custom written functions for that though, you just have to google it.

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The problem is that this plotting function does not allow you to supply an existing axes handle as input so it relies on finding the current axes. By default, the handle visibiliity of UIFIgures is off so the axes within those figures are not discoverable.

From r2020a and later, you need to set the app's handle visibility to on so that the app's axes can be detected as "current". Then make the app's axes "current". Then, you can run the plotting function which will access your app's axes.

% app.UIFigure is the handle to your app's figure
% app.UIAxes is the handle to the app's axes 
% 1) Turn on the app figure's handle visibility. 
     app.UIFigure.HandleVisibility = 'on'; 
% 2) Make the app's axes current
     set(0, 'CurrentFigure', app.UIFigure)
     set(app.UIFigure,'CurrentAxes',app.UIAxes)
% 3) call the plotting function 
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% 4) set app figure handles back to invisible (optional, but recommended)
    app.UIFigure.HandleVisibility = 'off';

MATLAB: No ToolBar in App Designer

Toolbar can be added programatically to app designer using uitoolbar function from MATLAB R2020a ownwards.

Refer here for more information.

Best Answer

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