matplotlib Code

some tweaks to csv2rec and rec2csv

added spine autodocs

Arbitrary spine placement

Fix problem with polar grid lines by specifying the number of interpolation steps on a per-Path basis. This isn't really a public API -- it is intended for internal use only.

Move code for wrapping negative frequencies from specgram() into _spectral_helper(), so that psd(), csd(), and cohere() can benefit from this functionality as well. While this changes API a little, this is much more sensible behavior.

Add log scale option to clip non-positive values instead of masking

Let pyplot users find out if a figure number exists, or list fignums.

Removal of numerix, stage 2.
The only vestiges are a couple method names, and a validator
with a warning to catch numerix keys in matplotlibrc files.

Add imsave() to matplotlib.image, pyplot, and pylab. Patch from Gary Ruben.

remove pyexcelerator support - use xlwt instead