axis legend

I want to write some greek symbols in axes legend, for

    > exemple nu letters or lambda. Is it possible? Thank you.

You can use mathtext anywhere you can use text. Just use the standard
way of specifying the string

s = r'$\lambda = 5$'

See http://matplotlib.sf.net/matplotlib.mathtext.html for more
information on mathtext.

You may be happy to hear that mathtext for postscript should be ready
soon!

Here is an example that uses mathtext in a legend

    from matplotlib.matlab import *
    t = arange(0.0, 2.0, 0.1)
    plot(t, sin(2*pi*t), '--go', t, log(1+t), '.')
    legend((r'$\nu$', r'$\lambda$'), 'upper right')
    show()