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Hi Ariel,

You might find the attached function helpful here. Try creating a new 
colormap using the example in the docstring (you could also try setting 
high=0.8) - basically this will let you turn down the saturation which 
will hopefully solve your problem. You may also find the plot option 
useful to see what the individual colour channels are doing if you 
decide to make a new colormap of your own - you just need to ensure that 
the r, g, and b values match at both ends.

Gary


Ariel Rokem wrote:
> Hi everyone,
> 
> I am interested in using a circular colormap, in order to represent a 
> phase variable, but I don't like 'hsv' (which is circular). In 
> particular, I find that it induces perceptual distortion, where values 
> in the green/yellow part of the colormap all look the same. Are there 
> any circular colormaps except for 'hsv'? If not - how would you go about 
> constructing a new circular colormap? 
> 
> Thanks,
> 
> Ariel
> -- 
> Ariel Rokem
> Helen Wills Neuroscience Institute
> University of California, Berkeley
> http://argentum.ucbso.berkeley.edu/ariel

Hi everyone,

I am interested in using a circular colormap, in order to represent a phase
variable, but I don't like 'hsv' (which is circular). In particular, I find
that it induces perceptual distortion, where values in the green/yellow part
of the colormap all look the same. Are there any circular colormaps except
for 'hsv'? If not - how would you go about constructing a new circular
colormap?

Thanks,

Ariel
-- 
Ariel Rokem
Helen Wills Neuroscience Institute
University of California, Berkeley
http://argentum.ucbso.berkeley.edu/ariel