odd plotyy behavior in GUI

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Franco 2014-3-15

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评论： Franco 2014-3-16

Im using plotyy to display a 2-variable graph in a matlab GUI I built. I would like the graph to clear every time I hit a button, so the first line in the callback function is "cla reset", but it's not working and I have no idea why. Can anyone help me out? Thanks.

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Answer 1

Walter Roberson 2014-3-15

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https://ww2.mathworks.cn/matlabcentral/answers/121715-odd-plotyy-behavior-in-gui#answer_128590

See my comments in http://www.mathworks.co.uk/matlabcentral/answers/22208-show-figure

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Walter Roberson 2014-3-16

在 MATLAB Online 中打开

Your "cla reset" is probably not operating on the axes you think it is. You should be using an explicit axes argument in the call,

cla(TheAxes, 'reset')

It is recommended that you give the parent object (axes, figure) for every graphics operation instead of relying on MATLAB "knowing" which one you are working on. For example,

plot(TheAxes, x, y)

instead of

plot(x, y)

Franco 2014-3-16

What you suggest is exactly what Im doing. The GUI has 2 plots, so I have to tell which graph to plot on [plotyy(handles.axes1,x,y1,x,y2)] I tried clearing the graphs using what you suggest, [cla(TheAxes, 'reset')], but the problem is that the statement goes at the beginning of the function, where the axes is not defined until the middle of the function. My goal is for the the function, before executing any of the script to clear all graphs at [cla reset] doesn't seem to be doing it for some reason.

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