## SPONES Sparse Ones Function

Section: Sparse Matrix Support

### Usage

Returns a sparse`float`

matrix with ones where the argument
matrix has nonzero values. The general syntax for it is
y = spones(x)

where `x`

is a matrix (it may be full or sparse). The output
matrix `y`

is the same size as `x`

, has type `float`

, and contains
ones in the nonzero positions of `x`

.

### Examples

Here are some examples of the`spones`

function
--> a = [1,0,3,0,5;0,0,2,3,0;1,0,0,0,1] a = 1 0 3 0 5 0 0 2 3 0 1 0 0 0 1 --> b = spones(a) b = 1 1 1 1 2 1 1 3 1 1 4 1 1 5 1 --> full(b) ans = 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0