Plot a vector with different colors on selected data

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Alex 2019-8-7

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https://ww2.mathworks.cn/matlabcentral/answers/475271-plot-a-vector-with-different-colors-on-selected-data

评论： darova 2019-9-8

Hi community,

I have a vector of 700 elements. While plotting, I want to plot first 100 points in 'Red' color and the next 100 points in 'Blue' color. Later, I want to repeat them. Is there any inbuilt function to do it?

Thanks

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回答（2 个）

madhan ravi 2019-8-7

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/475271-plot-a-vector-with-different-colors-on-selected-data#answer_386625

在 MATLAB Online 中打开

No loops needed:

v = reshape(vector,100,[]);
plot(v(:,1:2:end),'r')
hold on
plot(v(:,2:2:end),'b')

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Alex 2019-8-12

@madhan: Any update? Thanks

darova 2019-9-8

在 MATLAB Online 中打开

Just add x data

x = linspace(0,30,700);
y = sin(x);
x1 = reshape(x,100,[]);
y1 = reshape(y,100,[]);
i1 = 1:2:size(x1,2);
i2 = 2:2:size(x1,2);
plot(x1(:,i1),y1(:,i1),'r')
hold on
plot(x1(:,i2),y1(:,i2),'b')
hold off