How to plot 2 different colour using RBG setting

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.

Answer 1

[Image Analyst]

Your y2 does not have the same number of elements as x. It has nothing to do with the colour.

[Matlaber]

However, when I plot:

plot(x,y,'blue', x,y2,'red'), 

it work.

[Image Analyst]

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]

It works, in this case.

Thanks.

Not sure why join both plot together, it does not work.