# @turf/envelope

# envelope

Takes any number of features and returns a rectangular [Polygon](http://geojson.org/geojson-spec.html#polygon) that encompasses all vertices.

**Parameters**

-   `geojson` **([FeatureCollection](http://geojson.org/geojson-spec.html#feature-collection-objects) \| [Feature](http://geojson.org/geojson-spec.html#feature-objects)<any>)** input features

**Examples**

```javascript
var features = turf.featureCollection([
  turf.point([-75.343, 39.984], {"name": "Location A"}),
  turf.point([-75.833, 39.284], {"name": "Location B"}),
  turf.point([-75.534, 39.123], {"name": "Location C"})
]);

var enveloped = turf.envelope(features);

//addToMap
var addToMap = [features, enveloped];
```

Returns **[Feature](http://geojson.org/geojson-spec.html#feature-objects)<[Polygon](http://geojson.org/geojson-spec.html#polygon)>** a rectangular Polygon feature that encompasses all vertices

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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/envelope
```

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

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