Re: [Matplotlib-users] How to automatically update a plot?

[John H. <jd...@gm...>]

> My problem is: even though I call draw() twice, the figure is not
> imeediately updated when the user selects a given line on the treeview. The
> figure is updated only when I change the size of a pane. I tried using
> matplotlib in interactive mode, adding the line
>
>     matplotlib.interactive( True )

You don't need this - -this is for people working interactively from
the python shell, not using mpl in a GUI.
>
> after the lines
>
>     import matplotlib
>     matplotlib.use( 'GTK' )

This is fine, but also not necessary.  This affects people using
pylab/pyplot.  You should not be.  You should be following the
"embedding_in_YOURGUI*.py examples at
http://matplotlib.sf.net/examples

> barraAtual.draw( )

If I read your post correctly, barraActual is a Rectangle.  You need
to be calling draw on the FigureCanvas, not on the individual artists.
 Eg

  fig.canvas.draw

where fig is your matplotlib.figure.Figure instance.

JDH