Find out indexes of zeroed elements in matrix
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    lucksBi
 il 12 Giu 2017
  
    
    
    
    
    Modificato: David Goodmanson
      
      
 il 12 Giu 2017
            hey
how can i find out indexes of zeroed elements of all rows in a matrix.e.g.
     matrix=    [1,0,0,2,0,0;1,2,6,5,0,3;1,0,2,9,4,0]
it'll show 2;3;5;6 for row 1, 5 for row2 and 2;6 for row3.
Thanks
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  David Goodmanson
      
      
 il 12 Giu 2017
        
      Modificato: David Goodmanson
      
      
 il 12 Giu 2017
  
      Hi lucksBi, the find command gives you the row and column indices for a given condition. The find command searches column by column but you are more interested in row by row, so in this case it's better to use the transpose of the matrix
[a b] = find(matrix.'==0];
inds = [b a]
inds =
   1     2
   1     3
   1     5
   1     6
   2     5
   3     2
   3     6
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