plotting 13 lines with different colors !!

Question

Ahmed 2013-2-12

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https://ww2.mathworks.cn/matlabcentral/answers/63173-plotting-13-lines-with-different-colors

评论： Sterre de Lignie 2022-6-16

i am plotting about 15 different lines in the same graph and i need more color codes than the existing 8 which are (r g b k c m y w)can any one help ??

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Answer 1

Sean de Wolski 2013-2-12

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https://ww2.mathworks.cn/matlabcentral/answers/63173-plotting-13-lines-with-different-colors#answer_74759

编辑：Sean de Wolski 2013-2-12

在 MATLAB Online 中打开

Use the RGB components explicitly:

h = zeros(20,1);
figure; hold on
for ii = 1:20;
   h(ii) = plot(1:10,cumsum(rand(1,10)),'Color',rand(1,3));
end
legend(h);

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Jan 2013-2-12

Random colors are not a guarantee, that there are different colors.

Sean de Wolski 2013-2-12

the odds are in my favor ;)

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Answer 2

Jan 2013-2-12

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https://ww2.mathworks.cn/matlabcentral/answers/63173-plotting-13-lines-with-different-colors#answer_74760

编辑：Jan 2013-2-12

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You can use RGB colors, which are defined by a [1 x 3] vector. There are several colormaps available in Matlab already, e.g.:

cmap = jet(15);
for k = 1:15
  line(1:10, rand(1:10)+k, 'Color', cmap(k, :));
end

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Bruno Pedroni 2018-9-5

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cmap = jet(15);
for k = 1:15
  line(1:10, rand(1,10)+k, 'Color', cmap(k, :));
end

Sterre de Lignie 2022-6-16

For me this worked very nicely!

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Answer 3

Korosh Agha Mohammad Ghasemi 2020-12-7

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在 MATLAB Online 中打开

.

%https://zil.ink/korosh                       -------- Ways to contact me ----------
% Korosh Agha Mohammad Ghasemi !
%  Chemical Engineering at Shiraz University
x=linspace(0,2,100);
figure;
for a=[0.1 0.5 1 2 4]
y=x.^a;     %The function is hypothetical
if a == 0.1    %Any color can be substituted
    y=x.^a;
    plot(x,y,'k')  %Now choose the color
    hold on
elseif a == 0.5
    y=x.^a;
    plot(x,y,'b')   %Now choose the color
    hold on
elseif  a==1
    y=x.^a;
    plot(x,y,'g')    %Now choose the color
    hold on
elseif a==2
    y=x.^a;
    plot(x,y,'r')   %Now choose the color
    hold on
elseif a==4
    y=x.^a;
    plot(x,y,'y')   %Now choose the color
hold on
grid on
end
end