strange error in points_to_pixel

unsupported operand type(s) for /: 'array' and 'float'

This is a known bug with older versions of Numeric (eg 22.0) combined
with "from __future__ import division". It also affects current
versions of numarray. If you upgrade to the latest Numeric it will go
away. I try and code around it; in this case I forgot. I'll add the

    > PS: the mathtext-option was a very pleasant surprise to me
    > (hadn't seen any discussion on it on the mailing list).

Glad to hear it - there was some discussion on the matplotlib-devel
list. I'm sure you'll encounter strangeness and some parse errors
since it is not widely tested, so please alert me when you do (check
the KNOWN ISSUES section of