[Matplotlib-users] contourf() color mapping

[James C. <jco...@uc...>]

Hi, 

I'm having some trouble producing a filled contour how I want it. 

Say I'm plotting data over the range [1.2, 20] using 15 level lines evenly spaced
over that interval. I'd like the min of that interval to map to the min of the color spectrum (say "jet" so dark blue)
and the max of that interval to map to the max of the spectrum (so red). It doesn't seem to work that way. 
When I do filled contours, sometimes the low values are mapped to black or dark gray and 
sometimes they're mapped to blue. 

I always want the endpoints of the spectrum to map to the endpoints of the plotted values. Can this be done? 
Any help is appreciated. Thanks. 


- James