How can I make the contents of a pop-up box in a GUI dependent on the selection of another pop-up box in the same GUI?

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Luke Barnard on 9 Aug 2013

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Answered: Bassam ElGhoul on 9 Aug 2018

Dear All,

I have a large number of image files from an experiment and I am building a small and simple gui to make browsing through them less laborious.

Specifically, I have a sequence of images from two cameras, say A and B, which take photos at certain times t1...tn (7 times), and multiple positions, x1...xn (16 positions).

I have so far built a working GUI which provides pop up menus to select the camera, and time, and from this builds a filename for one position (which has a form similar to 'A_tn_xn.png') and process and display the image. This works okay, but is limited to the one position.

My problem has been introducing a pop up box for the position variables, and this is because the position variable has different values for camera A and B. Therefore, I would like the contents of the list in the position pop up box to be dependent on the user selection of the camera.

Presently I have been unable to work out how best to acheive this.

Any help or pointers would be appreciated,

Many thanks, Luke

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Answer 1

Robert Cumming on 9 Aug 2013

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Open in MATLAB Online

The code below should show you an example of what you could do linking 2 pop menus and contents.

Maybe from that you can work out what else you need to do in your situation.

% parent list
items = { 'A', 'B' };
% secondary list
secondList{1} = { 'A1' 'A2' };
secondList{2} = { 'B1' 'B2' };
% create a fig
hf = figure;
% create a anonymous function for the parent list callback
anon = @(x,y,z) set ( z, 'string', secondList{get(x,'value')} );
% create the uicontrol popup menus
h1 = uicontrol ( 'parent', hf, 'style', 'popupmenu', 'units', 'normalized', ...
             'position', [ 0 0.0 1 0.2], 'string', {''} );
h2 = uicontrol ( 'parent', hf,  'style', 'popupmenu', 'units', 'normalized', ...
             'position', [ 0 0.2 1 0.2], 'string', items, 'Callback', {anon h1} );