Subplots within for loops

Hi all,

I can't seem to find a solution for this simple problem:

I have a for loop with an output of 8 plots. I would like to group them as they come out in 2 subplots of 4. How can I do this?

KR,

KMT.

Answer 1

[Cedric]

 figure() ;
 for plotId = 1 : 4
    subplot(2, 2, plotId) ;
    plot(x{plotId}, y{plotId}) ;
 end

 figure() ;
 for plotId = 1 : 4
    subplot(2, 2, plotId) ;
    plot(x{plotId+4}, y{plotId+4}) ;
 end

or in one loop, but it adds some complexity that may not be that useful:

 for plotId = 1 : 8
     if ~mod(plotId-1, 4)
        figure() ;
     end
     subplot(2, 2, mod(plotId-1, 4)+1) ;
     plot(x{plotId}, y{plotId}) ;
 end

Finally, if you wanted to define your own axes to avoid all the space left by SUBPLOT and fit your 8 plots in one figure, you could do it as illustrated in my answer here:

https://www.mathworks.com/matlabcentral/answers/358303-how-is-it-possible-that-matlab-still-hasn-t-created-a-built-in-function-that-automatically-inserts-a

[Konstantinos Tsitsilonis]

Thanks for your answer!

Is there a way to do it without splitting it into two loops? I am asking cause I get my results form a for loop so it would be very convenient to run one subplot command if possible within that for loop.

[Cedric]

See my updated answer. Sorry, I apparently updated it while you were reading the first version.

You can see how that works by evaluating a few expressions:

 >> mod((1:8)-1, 4)
 ans =
     0     1     2     3     0     1     2     3

 >> ~mod((1:8)-1, 4)      % For triggering the creation of a new figure.
 ans =
  1×8 logical array
   1   0   0   0   1   0   0   0

 >> mod((1:8)-1, 4)+1     % For indexing the sub plot.
 ans =
     1     2     3     4     1     2     3     4

[Konstantinos Tsitsilonis]

Very elegant! Thank you for your answer, works very well

[Cedric]

My pleasure!