Hi all,
I need to mix maths & text in labels such as title and xlabel.
I first tried the most intuitive way:
title(r"$x$ and $y$")
but it appeared not to work (don't focus of my silly sample title, the real
one does make sense 
Then I tried
title(r"$x$ \text{and} $y$")
but I got an error related to the fact that is_string_like() returned False
when passing my title string to it.
Could you please tell me how to achieve it ?
Thanks in advance,
cheers,
Nicolas