Regression Discontinuity Design and Cmogram

[Lionel Jeanneret]

Hello,

I'm trying to study differences on both side of the swiss linguistic border. I'm using therefore the very practical function Cmogram (Downloadble :https://ideas.repec.org/c/boc/bocode/s457162.html by Boston College Department of Economics).
The graph is really nice, but i'm now trying to find out the difference of the regression on both side of my cut...

Do you have an idea?

Many thanks,

Lionel Jeanneret.

[Lionel Jeanneret]

Important Adds:
I'm using Stata 12.1 and this is my command for the graphic

cmogram Y distgraph if distgraph>-60 & distgraph<60, cut(0) scatter line(0) qfitci