Re: [Matplotlib-users] Using matplotlib OO rather than the pylab functions to save graphic context (fig

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

>>>>> "Philippe" == Philippe Collet <phi...@ho...> writes:

    Philippe> Hi list, I'm under windows XP SP2 using python 2.3.5,
    Philippe> matplotlib 0.80 and pygtk 2.6.0.  I'm trying to program
    Philippe> a viewer of data using matplotlib.  I want to be able to
    Philippe> save end reuse current graphic context (figure, title,

There is some tutorial information on using OO mpl at
http://matplotlib.sourceforge.net/faq.html#OO

    Philippe> axes, labels...).  I decided to explore the matplotlib
    Philippe> code.  But I'm not sure how i can get the current
    Philippe> figure.

Exploring the code is always a good way to start, as is reading the
class documentation for the classes you are working with, eg,
http://matplotlib.sourceforge.net/classdocs.html

Note that the concept of "the current figure" does not exist in the OO
API -- this is a pylab construct.  You create a figure with 

  fig = Figure(args...)

and then it is your responsibility to save it and use it where you
want, eg in as a class variable

  self.fig = Figure(args...)

    Philippe> I want to be able to save the current graphic context,
    Philippe> draw a figure, then reload other data and add them to
    Philippe> the current figure already drawn.


    Philippe> Has anyone done that before?  John, can you explain me
    Philippe> how to proceed?

This sounds eminently doable -- try writing some example code and if
you get stuck post the code and a description of what you are trying
to do and we can help out.

JDH