plotting 13 lines with different colors !!

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Ahmed on 12 Feb 2013
Commented: Sterre de Lignie on 16 Jun 2022
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 ??

Sean de Wolski on 12 Feb 2013
Edited: Sean de Wolski on 12 Feb 2013
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);
Sean de Wolski on 12 Feb 2013
the odds are in my favor ;)

Jan on 12 Feb 2013
Edited: Jan on 12 Feb 2013
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
Sterre de Lignie on 16 Jun 2022
For me this worked very nicely!

.
%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

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