MATLAB: Consider only a positive numbers of the first columns.

fist columns;

I have this matrix:
A =
   -0.0001   -0.0723    0.0007    0.0013   -0.0007   -0.0016   -0.0009    0.0010   -0.0018
   -0.0004   -0.0723    0.0008    0.0012   -0.0008   -0.0017   -0.0009    0.0011   -0.0017
   -0.0005   -0.0723    0.0007    0.0013   -0.0008   -0.0017   -0.0009    0.0011   -0.0017
    0.0002   -0.0723    0.0007    0.0012   -0.0007   -0.0017   -0.0009    0.0010   -0.0018
   -0.0003   -0.0723    0.0006    0.0012   -0.0007   -0.0017   -0.0009    0.0011   -0.0017
    0.0005   -0.0723    0.0007    0.0013   -0.0007   -0.0017   -0.0009    0.0011   -0.0017
My issue is to by-pass (or not consider) the rows that start with a negative number in the first column. How can I extend this procedure if I work with cell or struct variable? How can I do it?

Best Answer

Use
 B = A(find(A(:,1)>0),:)
Concerning your second question: that, of course, depends on how your cell array looks like. In general, you could convert to a numeric array and then use the code above.
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