Extract indices of vector?

Hello all, In my research work, I came across a stiuation where I want to extract indices of filled positions of a coulmn vector.

For e.g., B is a vector of dimension 8 X 1 wherein any two rows are non-zero while others are zero.

Then how can we extract the indices of non-zero row in MATLAB.

Any help in this regard will be highly appreciated.

Answer 1

[Stephen23]

X = find(B)

[chaaru datta]

Thanks a lot sir for your response.