How to plot heat map using MATLAB?

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Abdelwahab Afifi
Abdelwahab Afifi 2021-8-12
评论： Abdelwahab Afifi 2021-8-12
I have matrix with dimensions [4096, 181], I want to draw a heatmap for such matrix as in the following figure. How can i do so?

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Chunru
Chunru 2021-8-12
编辑：Chunru 2021-8-12
Ran in:
a = peaks(40);
imagesc(a)
colormap(hsv(512))
colorbar
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Abdelwahab Afifi
Abdelwahab Afifi 2021-8-12
I noticed that there is a red colour at the top and bottom of the colour map. this causes confusion. is it possible to limit the colour map exactly as in the pic I attached?

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