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Deleting Zero Rows - Matlab Noob

16 次查看（过去 30 天）
Mark
Mark 2013-3-28
编辑： Dattaprasad Sh 2020-2-20
I have a matrix A where the first column consists of unique positive whole numbers and zeros. I want to delete the rows where the values are zero.
A = csvread('Truss Data.csv',1,0);
B = sortrows(A(:,1:7)); %I'm sorting them to make sure they are sequential%
A =
1 0 0 0 0 1 1 1 29000 10 1 2
2 30 0 0 -120 0 0 2 29000 10 2 3
3 60 0 0 0 0 0 3 29000 10 3 4
4 90 0 0 0 0 1 4 29000 10 1 5
5 30 40 90 0 0 0 5 29000 10 2 5
6 60 40 0 0 0 0 6 29000 10 3 5
0 0 0 0 0 0 0 7 29000 10 3 6
0 0 0 0 0 0 0 8 29000 10 4 6
0 0 0 0 0 0 0 9 29000 10 5 6
B =
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0
1 0 0 0 0 1 1
2 30 0 0 -120 0 0
3 60 0 0 0 0 0
4 90 0 0 0 0 1
5 30 40 90 0 0 0
6 60 40 0 0 0 0
How do I remove the rows in B where the first column of B has zeros? I want:
B =
1 0 0 0 0 1 1
2 30 0 0 -120 0 0
3 60 0 0 0 0 0
4 90 0 0 0 0 1
5 30 40 90 0 0 0
6 60 40 0 0 0 0
  1 个评论
Mark
Mark 2013-3-28
*Note - the above matrix A doesn't show correctly on this webpage. There were too many columns to fit.

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采纳的回答

Cedric
Cedric 2013-3-28
B(B(:,1)==0,:) = [] ;

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