How to filter rows with respect to specific entry?

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Ammy
Ammy 2018-3-10
评论： Ammy 2018-3-10
I have thousands of rows and I want to filter those rows in which the entry at third position is three
For example
A=[1 2 3 4 5 6 7 8 9;0 1 2 3 4 5 6 7 8 9 10;5 6 3 2 1 4 7 8 9];
I want the resulting matrix
AA=[1 2 3 4 5 6 7 8 9;5 6 3 2 1 4 7 8 9]
Thanks
  1 个评论
dpb
dpb 2018-3-10
>> A=[1 2 3 4 5 6 7 8 9;0 1 2 3 4 5 6 7 8 9 10;5 6 3 2 1 4 7 8 9];
Dimensions of matrices being concatenated are not consistent.
>>

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采纳的回答

dpb
dpb 2018-3-10
>> A=[1 2 3 4 5;0 1 2 3 4;5 6 3 2 1];
>> A(A(:,3)==3,:)
ans =
1 2 3 4 5
5 6 3 2 1
>>

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