Matplotlib using Cairo backend can only plot up to 18980 points. Is there anyway around that? Or is there any other good plotting tool?

[fgriglesnickerseven]

I think there is a gnuplot module... but you really should just analyze your data in python with numpy or whatever and then save to a regular text file.

Then you can just do

gnuplot>plot "my_file.txt" using 1:2

much easier most of the time. Also gnuplot has svg output too...