Re: [Matplotlib-users] IDLE hangs despite -n

[John H. <jdh...@ac...>]

>>>>> "Hans" == Hans Fangohr <H.F...@so...> writes:

    Hans> I didn't make myself very clear, or I have misunderstood the
    Hans> meaning of "interactive". I presumed that 'interactive'
    Hans> means: I issue the plot command and the figure pops up
    Hans> immediatly, etc.

    Hans> Not interactive (in my understanding) means that I issue all
    Hans> the matplotlib commands I'd like to use and at the end I can
    Hans> use show() to display the picture.

This partially but not completely correct, but it is admittedly
confusing.  Make sure you have read
http://matplotlib.sourceforge.net/interactive.html and
http://matplotlib.sourceforge.net/faq.html#SHOW .  As emphasized in
the FAQ

  IMPORTANT: show should called at most once per script and it should
  be the last line of your script. At that point, the GUI takes
  control of the interpreter. If you want to force a figure draw, use
  draw instead.

If you are issuing plot commands from idle, you need interactive :
True, you should not use show, and if you want finer control of when
the plot pops up and it drawn, use the commands ion, ioff and draw, as
explained on the interactive.html link.

Hope this helps -- if you still encounter problems please let us know
because it is always possible there is a bug ....

JDH