rows which do not contain zero

13 views (last 30 days)
Mate 2u
Mate 2u on 23 Jul 2012
Hi all, I have a matrix D = 294x34. I want to output the number of rows which which may contain a number (so I want the the number of rows which are not all zeros).
Thank you.
  1 Comment
Mate 2u
Mate 2u on 23 Jul 2012
I apologise, lets say for instant our D = [2,4; 5,0;4,4; 0,0; 3,0; 0,0]
output should be 4 as there were two rows full of only zeros.

Sign in to comment.

Accepted Answer

Matt Kindig
Matt Kindig on 23 Jul 2012
row = any(D,2);
rowCount = sum(row); %number of rows with non-zero elements

More Answers (2)

Nirmal
Nirmal on 23 Jul 2012
Edited: Nirmal on 23 Jul 2012
count=sum(sum(D==0,2)==0)
count will be the number of rows which are not all zeros in matrix D.

Ryan
Ryan on 23 Jul 2012
Edited: Ryan on 23 Jul 2012
row_numbers = find(sum(A,2) ~= 0);
number_of_rows = numel(row_numbers);

Community Treasure Hunt

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

Start Hunting!

Translated by