MATLAB: How to delete specific rows in a matrix

delete specific rows of matrix

Hi everybody,
I have a very huge matrix, and I need to deleted rows when some of column numbers are equal to zero.
Here is a simple example.
 A=[ a1 a2 a3 a4 a5 a6 a7 a8
 b1 b2 b3 b4 b5 0 0 0 
 c1 c2 c3 c4 c5 0 0 0
d1 d2 d3 d4 d5 d6 d7 d8
 .
 .
 .
 .
 .
 .
 .
 z1 z2 z3 z4 z5 0 0 0]
how could I delete rows when the last three columns are zero?
Thank you very much.

Best Answer

You need to use all or any:
>> A = [1,2,3,4,5,0,0; 1,2,4,7,8,0,0; 2,3,5,4,3,5,7]
A =
     1     2     3     4     5     0     0
     1     2     4     7     8     0     0
     2     3     5     4     3     5     7
>> B = A(any(A(:,6:7),2),:)
B =
     2     3     5     4     3     5     7
Related Question