Heatmap with specified color ranges?

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Stephen 2020-7-1

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评论： dpb 2020-7-1

I would like to generate a heat map for my data such that values =<3.00 are white, and values >3.00 up to the max (typically the max values can be from 10.00 to 30.00) are graded from white to red. For example, in Excel, the conditional formatting rule is:

How do I do the eqjuivalent for my matrix of data, using Matlab's heatmapping?

Thanks!

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dpb 2020-7-1

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https://ww2.mathworks.cn/matlabcentral/answers/557959-heatmap-with-specified-color-ranges#answer_459676

Whether this does precisely what you're looking for or not, I dunno...but might be a starting point.

Nothing like that built in to any of the MATLAB colormap functionality.

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Stephen 2020-7-1

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Wait! I just think I solved my own problem with a SIMPLE solution. Namely, if I set the color axis to a threshold value, e.g. 3, and select a max value that will include the peak values in my array, this does the same thing as the above Excel conditioning format! That is:

caxis([3 10]);