MATLAB: Filling a internal value of a matrix

fill

Hi I have the following matrix
I=
     0     1     0     0     
     0     0     1     1    
     0     1     0     0    
     0     0     1     0
I want the following output:
     0     1     0     0     
     0     1     1     1    
     0     1     1     0    
     0     0     1     0
Is there any easy way to do that,easily?
Thanks

Best Answer

This function will help you: FINDSUBMAT. Here is an example:
   I=[0 1 0 0
      0 0 1 1
      0 1 0 0
      1 0 0 0
      0 0 1 0
      1 0 0 0
      0 0 1 0];
  idx = findsubmat(I,[1 0 1]');  % Available at the above link...
  I(idx+1) = 1
  I =
       0     1     0     0
       0     1     1     1
       0     1     0     0
       1     0     0     0
       1     0     1     0
       1     0     1     0
       0     0     1     0
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