On 2/5/07, Michael Lerner <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I have some data where I'd like almost all of it to be plotted with a
> LinearSegmentedColormap that I've made, but I have a few special
> values that I'd like to set to specific colors (white, in this case).
> So, I made a LinearSegmentedColormap that works pretty well, but I'm
> having trouble with the rest. I found a nice-looking example at
>
> http://www.scipy.org/Cookbook/Matplotlib/Plotting_Images_with_Special_Values
>
> But, it doesn't work for me. In particular, it complains a lot about
> _lut. I'm using matplotlib 0.87.7 on an intel Mac running OS X and
> python 2.4.
On a very quick read, it appears that the sentinel map in that example
forgot to initialize the baseclass. Eg, you need
class SentinelMap(Colormap):
def __init__(self, cmap, sentinels={}):
Colormap.__init__(self) # init the base class
# boilerplate stuff - rest of init function here
See if that helps, and let us know. If you get it working, please fix
the wiki (you may have to sign up) and post your example along with
it.
Otherwise, please post a complete code example and we'll see what we can do.
JDH
>
> Can someone show me how to make a sentinel'd version of a
> LinearSegmentedColormap?
>
> Thank you,
>
> -Michael Lerner
>
> --
> Biophysics Graduate Student
> Carlson Lab, University of Michigan
> http://www.umich.edu/~mlerner http://lernerclan.net
>
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