Deleting Nonzero elements in each row

2 views (last 30 days)
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

Accepted Answer

Walter Roberson
Walter Roberson on 17 Oct 2017
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.

More Answers (1)

Cedric
Cedric on 17 Oct 2017
Edited: Cedric on 17 Oct 2017
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] ;
  1 Comment
Cedric
Cedric on 18 Oct 2017
Actually if you read again your question Dan, Walter gave you the correct answer.

Sign in to comment.

Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!