## NONZEROS Retrieve Nonzero Matrix Entries

Section: Array Generation and Manipulations

### USAGE

Returns a dense column vector containing the nonzero elements of the argument matrix. The syntax for its use is

       y = nonzeros(x)

where `x` is the argument array. The argument matrix may be sparse as well as dense.

### Example

Here is an example of using `nonzeros` on a sparse matrix.

    --> a = rand(8); a(a>0.2) = 0;
    --> A = sparse(a)

    A =
    	Matrix is sparse with 19 nonzeros
    --> nonzeros(A)

    ans =

        0.1767
        0.0337
        0.1943
        0.0846
        0.0200
        0.1884
        0.0519
        0.0745
        0.0538
        0.0838
        0.0560
        0.1657
        0.0433
        0.1788
        0.1374
        0.1702
        0.0513
        0.1767
        0.0528