Forcing axis redraw in animated plot

I'be been playing around with this for a while and can't seem to get it.

I'm running qt4 with a twisted python reactor (the qtreactor I maintain
for the twisted folks).

I'm doing an animated scrolling plot... all works great but I want to
rescale the plot as the ranges change. That works as well and I know
the information is in the axes because if I change the size of the plot,
they redraw correctly... but I can't figure out what call to make inside
the loop to force the axes to redraw...

This is probably really simple... but I've tried just about every call I
can think of and it just won't recalc...

any hints?



Glenn H. Tarbox, PhD