rows which do not contain zero

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Mate 2u
Mate 2u 2012-7-23
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 个评论
Mate 2u
Mate 2u 2012-7-23
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.

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采纳的回答

Matt Kindig
Matt Kindig 2012-7-23
row = any(D,2);
rowCount = sum(row); %number of rows with non-zero elements

更多回答（2 个）

Nirmal
Nirmal 2012-7-23
编辑：Nirmal 2012-7-23
count=sum(sum(D==0,2)==0)
count will be the number of rows which are not all zeros in matrix D.
Ryan
Ryan 2012-7-23
编辑：Ryan 2012-7-23
row_numbers = find(sum(A,2) ~= 0);
number_of_rows = numel(row_numbers);

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