Use the same color multiple times in a plotting loop

Question

Ralf Niemann 2013-7-23

1
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https://ww2.mathworks.cn/matlabcentral/answers/82936-use-the-same-color-multiple-times-in-a-plotting-loop

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 2013-7-24

在 MATLAB Online 中打开

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 2013-7-24

在 MATLAB Online 中打开

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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Answer 1

Narges M 2013-7-24

0
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https://ww2.mathworks.cn/matlabcentral/answers/82936-use-the-same-color-multiple-times-in-a-plotting-loop#answer_92600

编辑：Narges M 2013-7-24

在 MATLAB Online 中打开

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