How to plot 2 different colour using RBG setting

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Matlaber
Matlaber 2020-1-3
评论： Matlaber 2020-1-3
plot(x,y,'color',[0,0.5,0], x,y2, 'color',[0.5,0,0])
It said
Error using plot
Vectors must be the same length.
If I am using:
plot(x,y,'color',[0,0.5,0]),
it works.

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回答（1 个）

Image Analyst
Image Analyst 2020-1-3
Your y2 does not have the same number of elements as x. It has nothing to do with the colour.
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Image Analyst
Image Analyst 2020-1-3
Yeah, weird - I don't know. However you can do it as two separate calls to plot with hold on in between:
x = 1 : 20;
y = rand(1, length(x));
y2 = rand(1, length(x));
plot(x,y, 'color', [0,0.5,0]);
hold on
plot(x,y2, 'color', [0.5,0,0])
Matlaber
Matlaber 2020-1-3
It works, in this case.
Thanks.
Not sure why join both plot together, it does not work.

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