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How to assign a different color to lines being plotted in a loop?

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farzad
farzad on 8 May 2020
Edited: Akihumi on 12 May 2020
Hi All
I am plotting n different lines in one single plot. but what I need it to assign a different color ( even random) for each iteration. and then use it as a Legend.
How do I do this ?

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Stephen Cobeldick
Stephen Cobeldick on 12 May 2020
The accepted answer states that line color is determined by the lines colormap. This is not correct.
Line colors are determined by the axes ColorOrder property:
The lines colormap is also defined in terms of the axes ColorOrder.

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Accepted Answer

Akihumi
Akihumi on 8 May 2020
Edited: Akihumi on 12 May 2020
* Edits: Sorry for the wrong information about the default line color.
Otherwise, you can try
figure
hold on
randColor = rand(10,3);
for i = 1:10
plot(x(:,i),y(:,i),'Color',randColor(i,:));
end
legend
But the color would be ugly. Instead of rand, you can try other available colormap. For example
figure
hold on
cm = parula(10);
for i = 1:10
plot(x(:,i),y(:,i),'Color', cm(i,:));
end
legend

More Answers (1)

Isiah Pham
Isiah Pham on 8 May 2020
Edited: Isiah Pham on 12 May 2020
You can make a cell array for each color you want and the pull from it
colors = {['red'],['blue']}
for rep = 1:2
plot((x,rep.*x), colors{rep})
end
This will plot two lines, the first red and the second blue

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