[Matplotlib-users] forcing a plot to appear

Hi,

I am trying to develop an application that I can run inside the ipython 
shell.  One of my methods creates a plot, asks the user to make a choice 
based on that plot, and then creates another plot that displays the chosen 
set of information.

If the choices are made with a qt or wx dialogue, everything goes fine.  If 
I try to get the choice by asking the user to type the information into the 
shell, neither plot appears until after the choice is made.

I have tried show() and draw() but neither make any difference.

thanks for any help

Ken Dere