How to increment index value of variable on every click of Push button?

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Arun Badigannavar 2013-3-4

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https://ww2.mathworks.cn/matlabcentral/answers/65745-how-to-increment-index-value-of-variable-on-every-click-of-push-button

I want to set variable A1=1 wen user clicks Push Button1,A2=1 wen user clicks second time the same push button,A3=1 wen user clicks same button for third time,,,like this variable index should increase wenever user clicks the push button ,,

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Answer 1

Jan 2013-3-4

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在 MATLAB Online 中打开

Do not do this. See Answers: FAQ How to create variables A1, A2, ... in a loop.

It is much smarter to store the variables as a vector or cell array, such that you can access the value by A{1} or A(1), respectively. Then the button's callback can store the counter in the handles struct:

function buttonCallback(ObjectH, EventData)
handles = guidata(ObjectH);
handles.counter    = handles.counter + 1;
handles.A{counter} = 1;
guidata(ObjectH, handles);

Then the counter and the list of variables ist stored in the FIGURE's ApplicationData an can be obtain by GUIDATA.