Is it possible to define colormap ranges or merge colormaps?
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lstr
el 25 de Ag. de 2022
Comentada: lstr
el 25 de Ag. de 2022
I am creating a heat map using imagesc with data in [0 100]. I need to emphasize two data ranges as distinct, say [0 5] shades of red and [5 100] colors that are not red.
I'm a proficient MATLAB user/googler generally, but am not sure what vocabulary to use when searching. Any advice - either tips on how to accomplish this or terms to google - would be welcome!
Thanks!
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Chad Greene
el 25 de Ag. de 2022
Try concatenating colormaps, like this. Below I'm using my cmocean colormaps, which are available on File Exchange, but you can concatenate any RGB arrays.
% Some data
Z = abs(peaks(500));
Z = 100*Z/max(Z(:)); % scaled 0 to 100
figure
imagesc(Z)
cb = colorbar;
% Two colormaps:
col1 = cmocean('amp',6); % 6 shades of red
col2 = parula(95); % 95 shades of parula
% Concatenate colormaps:
col = cat(1,col1,col2);
colormap(col)
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