Convert a integer matrix to a red and blue colored matrix

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I have the following matrix A = [-1 1 1; 1 -1 1; -1 -1 -1], I want to convert it to a colored matrix with cells corresponding to 1 colored red and -1 colored blue. Something like this:
How do I do that in matlab?

Accepted Answer

Chunru
Chunru on 10 Sep 2022
A = [-1 1 1; 1 -1 1; -1 -1 -1]
A = 3×3
-1 1 1 1 -1 1 -1 -1 -1
imagesc(A);
% select a colormap
cmap = hsv(8); % based on hsv
cmap = cmap([5 1], :); % choose color 5 and 1
colormap(cmap);
colorbar

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