How do I change a marker type (e.g., circle to triangle) for a user selected section of a plot?

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Tyler Goodell 2018-2-27

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https://ww2.mathworks.cn/matlabcentral/answers/385311-how-do-i-change-a-marker-type-e-g-circle-to-triangle-for-a-user-selected-section-of-a-plot

评论： Tyler Goodell 2018-2-28

I am using the "selectdata" function from John D'Errico's MFE submission to grab specific data points from a graph (although this method isn't really important—what's important is that a subset of a plot is being selected). I need to have the programmatic ability to change the marker type of any user selected subset that is originally plotted together (see image). So for the example image below, I would grab the four right selected circles and change them to triangles.

I just used brush tool to highlight an example of the marker types I want to change since it's easier screengrab.

I've been looking for the past 2 days and haven't found anything anywhere on here or the undocumented Matlab pages so outlook is bleak, but I'm hopeful one of you geniuses can help me figure this out.