Arrows in plots

Dear Matplotlib-Users, I would like to add arrows at the

    > corners of the blue line to illustrate the order of the
    > iterates. Is it possible to realize it with matplotlib ?

You may want to look at examples/ and the
matplotlib.patches.FancyArrow class in current svn (revision 2201).
There is also a class matplotlib.patches.Arrow but the arrows it makes
are not as nice as those of the FancyArrow.