Would it be possible to have a different alpha (transparency) value for the marker face color and edge color for a single line? (Either currently or as a new feature of mpl). It seems like by default alpha applies to them both.
I ask because I am experimenting with getting a different look for the markers by plotting the same points twice, once with a transparent marker face color and then again with a fully opaque thin marker edge and it is a nice effect (see attached image). The problem is, I am doing point picking, and the two-points-at-one-location seems to be making the popup I create slower and occasionally mis-positioned. Although I may be able to work that out, I thought it would be "cleaner" to just have one set of points. Thanks, Che
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