# @turf/line-to-polygon

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## lineToPolygon

Converts (Multi)LineString(s) to Polygon(s).

### Parameters

*   `lines` **([FeatureCollection][1] | [Feature][2]<([LineString][3] | [MultiLineString][4])>)** Features to convert
*   `options` **[Object][5]** Optional parameters (optional, default `{}`)

    *   `options.properties` **[Object][5]** translates GeoJSON properties to Feature (optional, default `{}`)
    *   `options.autoComplete` **[boolean][6]** auto complete linestrings (matches first & last coordinates) (optional, default `true`)
    *   `options.orderCoords` **[boolean][6]** sorts linestrings to place outer ring at the first position of the coordinates (optional, default `true`)
    *   `options.mutate` **[boolean][6]** mutate the original linestring using autoComplete (matches first & last coordinates) (optional, default `false`)

### Examples

```javascript
var line = turf.lineString([[125, -30], [145, -30], [145, -20], [125, -20], [125, -30]]);

var polygon = turf.lineToPolygon(line);

//addToMap
var addToMap = [polygon];
```

Returns **[Feature][2]<([Polygon][7] | [MultiPolygon][8])>** converted to Polygons

[1]: https://tools.ietf.org/html/rfc7946#section-3.3

[2]: https://tools.ietf.org/html/rfc7946#section-3.2

[3]: https://tools.ietf.org/html/rfc7946#section-3.1.4

[4]: https://tools.ietf.org/html/rfc7946#section-3.1.5

[5]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object

[6]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Boolean

[7]: https://tools.ietf.org/html/rfc7946#section-3.1.6

[8]: https://tools.ietf.org/html/rfc7946#section-3.1.7

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---

This module is part of the [Turfjs project](https://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 single module individually:

```sh
$ npm install @turf/line-to-polygon
```

Or install the all-encompassing @turf/turf module that includes all modules as functions:

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