statsmodels/statsmodels — pull request #569 by dengemann (2012-11-14 18:55:04+00:00)
Title: ENH: support categorial x-axis factors  in interaction_plot

Here's a clean version of #527 reflecting the discussion we've had over there.

Labels are automatically inferred from the x factor
- genercially written, everything that can be consumed by np.unique is supporded
- xticks and their labels are automatically drawn from x if x is a str array
- updated example
- updated doc strings. The should be more accessible to people who never heard of trace factors.

I used pull --rebase for updating with master, I hope the history looks ok.

Best,
D