How can I change only one color in my colormap?

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I plot a 3dimensional temperature distribution via interpn in the whole space. so the data that are not defined by my input data appear as zero. to put them as NaN does not work for the programm to run. So i want to change the color for c=0 to white so it doesnt disturb the view. how can I do that?

Accepted Answer

Image Analyst
Image Analyst on 11 Jun 2015
Assuming the 0 value is the first row of your color map:
yourColorMap(1, :) = [1,1,1];
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