Deleting Nonzero elements in each row

Hi,

I have a 5 x 5 matrix with the 2 zeros in each row. How can I delete the nonzero elements from each row?

Any help would be appreciated. Thanks,

DB

Answer 1

[Walter Roberson]

YourNewMatrix = zeros( size(YourMatrix,1), 2 );

After deleting all the non-zero elements of each row, only zeros are going to be left. You might as well construct an all-zero matrix directly.

[Cedric]

Ah! I had not read the question well enough ;)

Answer 2

[Cedric]

Here is one way:

 >> A 
 A =
     0     0     5     5     4
     1     0     1     3     0
     4     2     0     0     3
     5     5     0     0     3
     0     3     1     0     1

 >> [~, ~, v] = find( A.' ) ;
 >> B = reshape( v, 3, [] ).'
 B =
     5     5     4
     1     1     3
     4     2     3
     5     5     3
     3     1     1

.. and I don't know if you posted another delete question that was pretty close an hour ago or if it was someone else, but an answer was:

 C = max((A == permute(B(:,1),[3,2,1])) .* permute(1:size(B,1), [1,3,2]), [], 3)

for

 A = [2 3 4; 4 5 6; 7 8 9] ;
 B = [7 5; 3 4; 4 3; 8 4; 9 4] ;

[Cedric]

Actually if you read again your question Dan, Walter gave you the correct answer.