In a pcolor plot, how do I make values with 0 blank or set the color scheme to a set range?

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Andrew 2012-7-19

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https://ww2.mathworks.cn/matlabcentral/answers/44033-in-a-pcolor-plot-how-do-i-make-values-with-0-blank-or-set-the-color-scheme-to-a-set-range

Basically, I need to be able to set the the color scheme to a range so I can see certain values.

I have measurements that are about .1700, but they vary by about .001 and I want to see that variation. The problem is that I have 0 values (for formatting reasons) and they make it so I can't see the variation.

I would like to be able to set a range for the colors.

Red = max value

blue = min value -= 0

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采纳的回答

Miro 2012-7-19

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/44033-in-a-pcolor-plot-how-do-i-make-values-with-0-blank-or-set-the-color-scheme-to-a-set-range#answer_54014

The easiest way to go is to turn all zeros into NaN's (not a number) like

Data(Data==0)=NaN;

Then they dont appear in the plot. otherwise you have to use the colormap editor (rightklick on the colormap -> colormapeditor). There you can shift the arrows and change the colors. Afterwards you can save the colormap by

Colmap = colormap;

and use the scheme again in another plot like

colormap(Colmap);