[Matplotlib-users] pcolor loglog

[Ben W. <zo...@pa...>]

I have the need to make a pcolor loglog plot. Unfortunately I can't 
figure out how - as near as I can tell it's impossible, pcolor loglog 
just plain isn't supported. It seems like the ability to logify 
arbitrary axes would be a good idea (there's got to be *somebody* out 
there who wants a semilog polar projection) but I can't find it 
anywhere. Suggestions? Right now my best idea is to do the log 
transformation myself (eww) and then modify the axis legend (eww).

The following code was a vague attempt to force pcolor to use loglog 
scale, but it crashes with the message "Aborted" - seems like a 
suboptimal error message. I should point out that I'm currently using 
0.72.1 since updating the corporate version would take a little work, 
but I haven't seen anything in the 0.73.1 docs that imply that's 
changed. So if it has, lemme know and I'll go get someone to update. :)


#!/usr/bin/python

from matplotlib import pylab

import Numeric as Numeric

import math as math

def main(argv):

     pylab.loglog([1,100],[1,100])
     pylab.pcolor( Numeric.array( [ [ x + y for x in range(100) ] for y 
in range(100) ] ), shading = "flat" )
     pylab.savefig("/home/zorba/stats/color.png")

     return


-Ben