[R] Submatrices Extraction

Bruno C. bruno.c at inwind.it
Thu Jul 26 10:47:00 CEST 2007

Given a submatrix containing 0 or 1
I need to extract the indexes of all the diagonal submatrices 
so one of the two diagonals must contains only 1 for each submatrix ...
Any help?

Thanks in advance

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