Use the same color multiple times in a plotting loop

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Ralf Niemann
Ralf Niemann 2013-7-23
Hello everyone,
I have a problem with a plotting loop, where I am plotting the spectral data and following the fit. For the reason of clarity I want to have them both in the same color, however matlab switches to the next color in order. Can anyone give me hint how to avoid this?
Ralf
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Ralf Niemann
Ralf Niemann 2013-7-24
exactly that. I hope this makes my problem more clear:
folder=dir('*.csv');
for i=1:length(folder)
file=folder(i,1).name;
A=csvread(file);
plot(A(:,1),A(:,2));
hold all
f(:,1)=A(:,1);
f(:,2)=smooth(A(:,2),0.01,'lowess');
plot(f(:,1),f(:,2),'--');
end
Ralf Niemann
Ralf Niemann 2013-7-24
problem solved:
folder=dir('*.csv');
cc=lines(length(folder));
for i=1:length(folder)
file=folder(i,1).name;
A=csvread(file);
plot(A(:,1),A(:,2),'Color',cc(i,:));
hold all
f(:,1)=A(:,1);
f(:,2)=smooth(A(:,2),0.01,'lowess');
plot(f(:,1),f(:,2),'Color',cc(i,:),'--');
end

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采纳的回答

Narges M
Narges M 2013-7-24
编辑：Narges M 2013-7-24
You could use a colormap such as HSV to generate a set of colors. For example:
folder=dir('*.csv');
N = length(folder);
col=hsv(N);
for i=1:N
file=folder(i,1).name;
A=csvread(file);
plot(A(:,1),A(:,2),'color',col(i,:));
hold all
f(:,1)=A(:,1);
f(:,2)=smooth(A(:,2),0.01,'lowess');
plot(f(:,1),f(:,2),'--','color',col(i,:));
end
You can read more in Matlab documentations: http://www.mathworks.com/help/techdoc/creating_plots/bqsxy_a-1.html

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