本文介绍了如何更改Trisurf图的颜色图以更好地区分正/负值的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一个trisurf图,该图在零以上.如何更改颜色图,以便我进行颜色编码,以使表面上大于零的部分为蓝色,而小于零的部分为红色?
I have a trisurf plot that goes above and below zero. How do I change the colormap such that I color code so that portions of the surface greater than zero are blue and portions below zero are red?
推荐答案
您可以自己构建这样的颜色图.举个例子:
You can build such a colormap yourself. Take this example:
r = [1 0 0]; %# start
w = [.9 .9 .9]; %# middle
b = [0 0 1]; %# end
%# colormap of size 64-by-3, ranging from red -> white -> blue
c1 = zeros(32,3); c2 = zeros(32,3);
for i=1:3
c1(:,i) = linspace(r(i), w(i), 32);
c2(:,i) = linspace(w(i), b(i), 32);
end
c = [c1(1:end-1,:);c2];
surf(peaks), shading interp
caxis([-8 8]), colormap(c), colorbar
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