How can i set color range in 2D plot?

2016 5 21
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更新时间：2016 5 21
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I am getting 2D plot by using imagesc(..,z) command but here i need white color for lower value of Z(z is a 2*2 matrix) means if my z_max 1000, then below 50 i want to get white color. How can i do this?

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回答（1 个）

Walter Roberson
Walter Roberson 2016-5-21

0 个投票

z_cutoff = 50;
cmap = colormap();
cmap(1,:) = [1 1 1]; %white
colormap(cmap);
zmax = max(z(:));
caxis([z_cutoff, zmax]);

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