Why are the zoom callbacks of my figure not restored when I save and reopen my figure in MATLAB 7.8 (R2009a)?

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MathWorks Support Team 2009-8-17

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https://ww2.mathworks.cn/matlabcentral/answers/93521-why-are-the-zoom-callbacks-of-my-figure-not-restored-when-i-save-and-reopen-my-figure-in-matlab-7-8

回答： Charles 2015-8-26

When I run the following code:

      f = figure;
      plot(1:10)
      z1 = zoom(gcf);
      set(z1,'ActionPostCallback','TMWtest')
      saveas(f,'TMW_example_fig','fig')
      close all
      drawnow
      open('TMW_example_fig.fig')
      z2 = zoom(gcf);
      get(z2,'ActionPostCallback')

The GET command returns the following:

 ans =
      []

Why is the zoom callback not saved?

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Answer 1

MathWorks Support Team 2009-8-17

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在 MATLAB Online 中打开

The ability to save zoom callbacks as part of the figure file is not available in MATLAB.

To work around this issue, you can use the "CreateFcn" callback (which is saved by the figure). We can use this callback to create the zoom callback automatically every time the figure is created.

Consider the following code:

      f = figure;
      plot(1:10)
      set(f,'CreateFcn','z = zoom(gcf);set(z,''ActionPostCallback'',''TMWtest'')')

This code will automatically set the zoom callback "ActionPostCallback" to call "TMWtest.m", and this will happen every time the figure is opened.

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Answer 2

Charles 2015-8-26

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Thank you, this helps even on version 2015a. It puzzles me why the zoom callbacks are not saved with the figure while the datatip callbacks are. But, this does resolve the issue for me.

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Answer 3

Charles 2015-8-26

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https://ww2.mathworks.cn/matlabcentral/answers/93521-why-are-the-zoom-callbacks-of-my-figure-not-restored-when-i-save-and-reopen-my-figure-in-matlab-7-8#answer_190448

Thank you, this helps even on version 2015a. It puzzles me why the zoom callbacks are not saved with the figure while the datatip callbacks are. But, this does resolve the issue for me.