How to close a figure made in one function, from a different function

Question

Bradley 2024-3-28

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2100316-how-to-close-a-figure-made-in-one-function-from-a-different-function

编辑： Matt J 2024-3-31，13:19

Im making a program that graphs data and several buttons. One button plots graph A and another button plots graph B. When I click the button that graphs plot B I want plot A to close and plot B to open, I added close(ax) to function B but I get an error that the variable ax doesnt exist. How do I define ax in function B so that I can close Plot A before plot B pops up? Thanks!

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Answer 1

Matt J 2024-3-28

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https://ww2.mathworks.cn/matlabcentral/answers/2100316-how-to-close-a-figure-made-in-one-function-from-a-different-function#answer_1433101

编辑：Matt J 2024-3-28

How do I define ax in function B so that I can close Plot A

You don't. You create ax in function A (it is obtained from the plotting command that creates the graph), save it somewhere, and pass it to function B when it is needed there.

If this were being done in appdesigner, it would be a routine matter to save ax to a property of the app object, which gets passed around automatically to all the button callbacks in the app.

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Bradley 2024-3-31，13:09

Im creating a ui progammatically, and ive been trying to figure out a way to pass this plot from one function to another, would you happen to have an example I could look at? Thanks!

Matt J 2024-3-31，13:15

编辑：Matt J 2024-3-31，13:19

在 MATLAB Online 中打开

Hf=createPlot(1:5,rand(1,5));
closePlot(Hf);
function fig=createPlot(x,y)
  fig=ancestor(plot(x,y),'figure');
  
end
function closePlot(fig)
  close(fig)
end