Color from contourf and colorbar doesn't match

Question

Mike 2011-1-22

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/279-color-from-contourf-and-colorbar-doesn-t-match

I am using ‘contourf ’to create a filled 2-D contour plot, and using the ‘caxis‘ to control the max and min colorvalue. And then I used the ‘colorbar’ to create a colorbar. But the colorbar and the color on the figure doesn't match. If I change

cp=jet(4);%colormap
colormap(cp);

to

cp=jet(5);%colormap
colormap(cp);

The colorbar will be totally messed up.

Here is the code. Please help.

**************

clc;
clear
cf2=[0.8163    0.8425    0.8595    0.8581    0.7743    0.6571    0.8534    0.8522;0.7918    0.8053    0.8033    0.7986    0.7934    0.7889    0.7724    0.7874;0.7771    0.7909    0.7969    0.8502    0.8137    0.7955    0.6184    0.6209];
figure;
nn=0.6;
[c,h]=contour(cf2,[nn:0.1:1]);  
contourf(cf2,[nn:0.1:1]);
clabel(c);
caxis([nn,1]);
cp=jet(4);
colormap(cp);
h1=colorbar;
set(h1,'Ylim',[nn,1]);
set(h1,'YTick',nn:0.1:1);
set(h1,'YTickLabel',nn:0.1:1);