MATLAB: Call first row from zero-padded matrix – only call the non-zero values

Question

Hi folks,

I have a zero-padded matrix. I'm aware A(:,1) would call the first row of matrix A, but I want to only call the values in each row with non-zero values.

Thanks

Answer 1

Note that A(:,1), calls the first column..not the first row. If you want first row, use A(1,:)

To get only non-zero values use:

r1 = A(1,A(1,:)~=0)