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  1. tmat=...
  2. @(M)conv2(M.*(M>0),(x='aba')~=x','same')
  3.  
  4. A = [ 1  2  3;
  5.       4 -1 -2;
  6.      -3 -4 10;
  7.       1  2 10];
  8.  
  9. tmat(A)
  10.  
  11.  
Success #stdin #stdout 0.47s 121792KB
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tmat =

@(M) conv2 (M .* (M > 0), (x = 'aba') != x', 'same')

ans =

    6    4    2
    1    6   13
    5   12   10
    2   11   12
https://ideone.com/ov2cuv
language:
Octave (octave 4.4.1)
created:
7 years ago
visibility:
public

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