Plot a cell array containing n matrices on same graph but with different color for each matrix.

I have a cell array with which contains n matrices. I want to plot the cell array with each matrix plotted on the same graph. Each matrix line should be plotted with a different color.

[Akira Agata]

Question for clarification. You mean, your cell array is 1-by-n (or n-by-1), and each cell contains numeric array? If so, what is the size of each numeric array?

[Anuj Prajapati]

It's n-by-1 and is supposed to contain matrices of unequal dimensions.

Answer 1

[Anuj Prajapati]

This solves the problem. P{} contains the matrices.

colorspec = {[1 1 0]; [1 0 1]; [0 1 1];[1 0 0]; [0 1 0];[0 0 1];[0 0 0]};
figure
hold on;

for j = 1:n; 
    plot(P{j}, 'Color', colorspec{j})
end

Answer 2

[Akira Agata]

Here is another way. By using cellfun, you don't need to use for-loop.

% Sample 10-by-1 cell
C = cell(10,1);
for kk = 1:10
  C{kk} = rand(randi(20),1);
end

% Plot
figure
hold on;
cellfun(@plot,C);

Answer 3

[Cemil Közkurt]

 a=cell(2,2);

 a{1,1}=[1:10;rand(1,10)];

 a{1,2}=[1:5;rand(1,5)];

 a{2,1}=[1:8;rand(1,8)];

 a{2,2}=[1:3;rand(1,3)];

 s=size(a);

 for n=1:s(1)

   for m=1:s(2)

      plot(a{n,m}(1,:),a{n,m}(2,:))

      hold on

   end

 end

[Walter Roberson]

Anuj Prajapati comments to Cemil:

This plots with same color for each matrix.

[Walter Roberson]

Anuj Prajapati: In R2014b and later, this plots with a different color for each matrix.

[Cemil Közkurt]

a=cell(2,2);
a{1,1}=[1:10;rand(1,10)];
a{1,2}=[1:5;rand(1,5)];
a{2,1}=[1:8;rand(1,8)];
a{2,2}=[1:3;rand(1,3)];
s=size(a);
for n=1:s(1)
 for m=1:s(2)
    plot(a{n,m}(1,:),a{n,m}(2,:))
    hold on
 end
end

am i a color blind?

[Walter Roberson]

That appears to be four distinct colors to me.

[Anuj Prajapati]

Sorry I was using R2013a.