Heatmap with specified color ranges?

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Stephen
Stephen 2020-7-1
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
dpb 2020-7-1
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.
<FEX 4775 Threshold Color Range in HEATMAP>
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Stephen
Stephen 2020-7-1
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]);
dpb
dpb 2020-7-1
Kewl. I never did follow the caxis stuff all that much...

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