That does look like what I'm after. Two things are unclear to me from the docs you pointed to:
1) How do you actually add something to a plot with those? Are they automatically added to the current figure just by creating them?
2) How do patch/poly collections determine the edges? All I can see in the docs is a mention of a list of verts, but not any mention of how you specify edges.
I'm not totally sure if it will help for this, but try checking out
Christopher Barker, Ph.D.
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