Get Zoom Handle for UIAxes/Axes when using App Designer

Question

RichardW 2019-9-17

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/480749-get-zoom-handle-for-uiaxes-axes-when-using-app-designer

评论： RichardW 2019-9-23

采纳的回答： Ned

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I am developing an application using App Designer, and I am unable to obtain the zoom handle when using 'zoom'.

out = zoom(UIFigurehandle)

Returns the exception 'UI figure not supported as an input to zoom. Specify UIAxes or Axes in a UI figure instead.'

out = zoom(UIAxeshandle)

or

out = zoom(Axeshandle)

Returns the exception 'Incorrect number of input arguments.'

I can enable zoom using:

zoom(UIAxeshandle, 'on')

Which works as expected, but as per the documentation it wont return an output (it throws 'Output argument "out" (and maybe others) not assigned during call to "zoom".' if I try).

Using simply:

out = zoom()

Opens a new figure, but returns the handle.

How can I obtain the zoom handle when using app designer? I need it to be able to set the callback and other options, but right now I cannot find a way to do so.

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RichardW 2019-9-18

Thank you, but that is what I used in my example above. Within app designer both my call to the figure handle and uiaxes/axes handles are contained within 'app'.

Ankit 2019-9-18

zoom(app.UIFigurehandle) throws an error as already mentioned by Richard.

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Answer 1

Ned 2019-9-20

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https://ww2.mathworks.cn/matlabcentral/answers/480749-get-zoom-handle-for-uiaxes-axes-when-using-app-designer#answer_392835

You can't. As at 2017a pertaining to UIAxes, "zoom only supports the 'on' , 'off', and factor arguments."

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Ned 2019-9-23

Have you considered using axtoolbar ? Or changing the toolbar property of the UIAxes object? Or does this not suit your needs?

RichardW 2019-9-23

I need access to a callback in relation to zoom functionality, so I don't think axtoolbar or toolbar properties will help. axtoolbar callbacks seem to be in relation to button selection, whereas I want a callback to be flagged while zoom is being performed.

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