Delete rows from matrix?

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Xi Wen Lim
Xi Wen Lim 2016-3-26
评论： Xi Wen Lim 2016-3-26
I have a bunch of data:
[1 1
0 0
2 6
3 5
5 55
6 56
0 0
7 69
11 2
0 0 ]
I want to remove all rows with values 0 in the first column. How should I do this? The above is just a part of the data. The data has way more rows than that.

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采纳的回答

Stephen23
Stephen23 2016-3-26
编辑：Stephen23 2016-3-26
Just use some basic MATLAB logical indexing:
>> X = M(M(:,1)~=0,:)
X =
1 1
2 6
3 5
5 55
6 56
7 69
11 2

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