remove rows zeros( condition remove)

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ziad abdul
ziad abdul 2018-6-27
回答： Jan 2018-6-27
i have a=
1 2 3 4 5
0 0 0 8 9
4 5 8 5 6
0 0 0 8 6
i need a=
1 2 3 4 5
4 5 8 5 6
i have to delete 2. and 4. rows who have zeros (not all rows zeros)in first three column(condition remove)

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回答（2 个）

Jan
Jan 2018-6-27
A = [1 2 3 4 5; ...
0 0 0 8 9; ...
4 5 8 5 6; ...
0 0 0 8 6] ;
index = any(A(:, 1:3), 2);
B = A(index, :)
KSSV
KSSV 2018-6-27
编辑：KSSV 2018-6-27
A = [1 2 3 4 5
0 0 0 8 9
4 5 8 5 6
0 0 0 8 6] ;
idx = A==0 ;
A(sum(idx(:,1:3),2)==3,:) = [];

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