curved edges (arrows)

[paulthebaker]

Is it possible to draw curved edges connecting two nodes? For instance I want an edge that wraps around from the end of a row back to the beginning.

This is accomplished in TikZ by specifying the outgoing and incoming angle for an edge relative to the start and end nodes. Is there a similar feature in Matplotlib that could be added to the Edge class?

[paulthebaker]

It looks like FancyArrowPatch can do this with matplotlib.patch.ConnectionPatch.

I'm having trouble getting it to work with the FancyArrow object... not sure what the difference is between this and FancyArrowPatch.

[dsfulf]

Ideally this could be a set of kwargs that describe the fancy arrow patch, and which would have some defaults aliased to standard arrow types.

Implementation should also address #61.