Finds all zero crossings in a 1D ndarray
npm install zero-crossingszero-crossings
==============
Finds all zero crossings in a 1D ndarray assuming piecewise-linear interpolation.
``javascript
var ndarray = require("ndarray")
var zc = require("zero-crossings")
var array = ndarray([1, -1, 0, 10, 3, -1])
console.log(zc(array))
`
Output:
`
[ 0.5, 2, 4.75 ]
`
npm install zero-crossings
#### require("zero-crossings")(array[,level])
Finds all zero crossings in the 1D ndarray
* array is a 1D ndarraylevel
* is an optional parameter which indicates the crossings
Returns A list of all zero crossings in array`