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How can I plot several lines on a figure with different colours when using plotyy?

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Emir Cabukoglu
Emir Cabukoglu 2015-6-12
关闭： MATLAB Answer Bot 2021-8-20
x=eigen_h2(:,1);
y1=profile_h2(1:15000,3);
y2=eigen_h2(:,2);
y3=eigen_h2(:,3);
y4=eigen_h2(:,4);
figure
[hAx,hLine1,hLine2] = plotyy(x,y1,[x',x',x'],[y2',y3',y4']);
I'm trying to show y2' and y3' with different colours. I can show y1 with a different color, but y2,y3 and y4 all have the same color? How can I change their colours?
Thank you!

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回答（1 个）

Ingrid
Ingrid 2015-6-12
you should index the handle hLine2 (which is not a fortunate name choice as it is not the handle to the second line, but contains the handles to all the lines plotted on the secondary y-axes)
for ii = 1:4
set(hLine2(ii),'Color',colorWanted(ii,:))
end
with colorWanted a 4x3 matrix with the desired RGB values

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