I'm elated to have found matplotlib after struggling with octave and gnuplot.

There is one thing that I think matplotlib could improve on (or that I cannot find)
-- quick plotting a la gnuplot:

   plot "file.txt" using 1:2 with lp

For matplotlib, perhaps something like the following:

   fplot("filename", cols=(1,5), delimiter=',', numheader=2)

This would allow quick plotting of simple columnar data files, using some (default)
assumptions of the file format. I.e, delimiter could be 'intelligently' 
chosen based on some assumptions of the file, or set explicitly. Similarly for the
number of header rows, etc.

Are there any plans for such a feature, or does it already exist? Probably would
not be too difficult to implement if no one else is planning to do so.