changing sharex after ?

Hello, I am writing a little GUI with PyQT4 and

    > matplotlib. So it is embeded. I want that feature for
    > the user : he can decided after ploting some data to
    > synchronize 2 graph with the x axis for the zoom.

    > So this method would be very useful for me. Maybe I can
    > write it. Do you have a idea of all the variables
    > involved in the sharex feature ?

It doesn't look too easy, without some additional methods in the BBox
extension code. I'll look into it.