# @turf/line-slice-along

# lineSliceAlong

Takes a [line](http://geojson.org/geojson-spec.html#linestring), a specified distance along the line to a start [Point](http://geojson.org/geojson-spec.html#point),
and a specified  distance along the line to a stop point
and returns a subsection of the line in-between those points.

This can be useful for extracting only the part of a route between two distances.

**Parameters**

-   `line` **([Feature](http://geojson.org/geojson-spec.html#feature-objects)<[LineString](http://geojson.org/geojson-spec.html#linestring)> | [LineString](http://geojson.org/geojson-spec.html#linestring))** input line
-   `startDist` **[number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number)** distance along the line to starting point
-   `stopDist` **[number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number)** distance along the line to ending point
-   `units` **\[[string](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)]** can be degrees, radians, miles, or kilometers (optional, default `kilometers`)

**Examples**

```javascript
var line = turf.lineString([[7, 45], [9, 45], [14, 40], [14, 41]]);
var start = 12.5;
var stop = 25;
var sliced = turf.lineSliceAlong(line, start, stop, 'miles');

//addToMap
var addToMap = [line, start, stop, sliced]
```

Returns **[Feature](http://geojson.org/geojson-spec.html#feature-objects)<[LineString](http://geojson.org/geojson-spec.html#linestring)>** sliced line

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---

This module is part of the [Turfjs project](http://turfjs.org/), an open source
module collection dedicated to geographic algorithms. It is maintained in the
[Turfjs/turf](https://github.com/Turfjs/turf) repository, where you can create
PRs and issues.

### Installation

Install this module individually:

```sh
$ npm install @turf/line-slice-along
```

Or install the Turf module that includes it as a function:

```sh
$ npm install @turf/turf
```