How to delete a plot in UIAxes?

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Eduardo Gaona Peña
评论： David J. Mack 2018-2-7
I'm using a button as a tool to plot one linear fit over a curve and I would like to replace the plot of the fit whenever I push the button again. I'm not quite sure how to use the delete command in this case. Any help is appreciated :)

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David J. Mack
David J. Mack 2017-10-3
编辑：David J. Mack 2017-10-3
You could store the handle to the fitted line in the UserData of the figure and then retrieve it every time the button is hit and use it to replace the YData of the line with the new fitted YData (this "replaces" the old line). Greetings, David
  2 个评论
Jesus Velazquez
Jesus Velazquez 2018-2-1
any chance you could share an example of this?
David J. Mack
David J. Mack 2018-2-7
hFig = figure(); hPlot = plot(cfit); hFig.UserData.hPlot = hPlot; % Code to add the button
% in your callback hFig.UserData.hPlot.YData = newYData;

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