Change automatically colors and line style

Question

Alain 2014-6-11

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https://ww2.mathworks.cn/matlabcentral/answers/133676-change-automatically-colors-and-line-style

编辑： Ilham Hardy 2014-6-12

采纳的回答： Ilham Hardy

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Hello,

I'm sure my question has already been asked but I wasn't able to find it.

I'm plotting several functions in a loop such as:

for n=1:10
            [Y{1,n},V]=f_regression(M(n,:),k,1);
            hold all
            h(n)=plot(V(:,i),Y{1,n}(:,i));
end

I want each function to have its own color. hold all changes ideed the color but a lot of them are the same color.

Is it possible to have strictly different colors or maybe change the line style when the color is the same?

Thanks for helping.

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Answer 1

Ilham Hardy 2014-6-11

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https://ww2.mathworks.cn/matlabcentral/answers/133676-change-automatically-colors-and-line-style#answer_140436

编辑：Ilham Hardy 2014-6-12

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Hi Alain,

The hold all command used the ColorOrder .

By default there are only 7 elements (read: colors) defined in the ColorOrder , thus 7 repeated consecutive colors.

You can define your custom ColorOrder for specific figure (axis).

For example,

% check default ColorOrder
ColorOdrDef = get(gca,'ColorOrder'); %7x3 RGB array
%define your custom color order
ColorOdrCustom = [0 0 1;...
          0 1 0;...
          1 0 0;...
          0 1 1;...
          1 0 1;...
          1 0.69 0.39;...
          0.6 0.2 0;...
          0 0.75 0.75;...
          0.22 0.44 0.34;...
          0.32 0.19 0.19]; %10x3 RGB array
set(gca,'ColorOrder',ColorOdrCustom);

Hope that helps,

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Alain 2014-6-12

Thank you. I can choose my colors now. I imagine it's quite the same with the LineStyleOrder. I think I prefer changing both colors and linestyle. I'll try it. Thanks.

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Answer 2

Henric Rydén 2014-6-11

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Yes it's possible. Check the predefined colormaps here:

Matlab colormaps

colors = jet(10);
for n=1:10
            [Y{1,n},V]=f_regression(M(n,:),k,1);
            hold all
            h(n)=plot(V(:,i),Y{1,n}(:,i),'Color',colors(n,:));
end