odd plotyy behavior in GUI

2014 3 15
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更新时间：2014 3 16
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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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Walter Roberson
Walter Roberson 2014-3-15

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Franco
Franco 2014-3-15
Not sure on how that helps me. I want to plot 2 graphs on the same plot, each graph with its own y axis label. The link specifies that the user wants to show plots on different graphs.
Walter Roberson
Walter Roberson 2014-3-16
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
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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