nnz

Scilab Function
Last update : January 1995

nnz - number of non zero entries in a matrix

### Calling Sequence

  `n=nnz(X)`

### Parameters

- `X` : real or complex sparse (or full) matrix
- `n` : integer, the number of non zero elements in X

### Description

`nnz` counts the number of non zero entries in a sparse or full matrix

### Examples

    sp=sparse([1,2;4,5;3,10],[1,2,3]);
    nnz(sp)
    a=[1 0 0 0 2];
    nnz(a)

### See Also

`spget` ,