# @turf/flip

# flip

Takes input features and flips all of their coordinates from `[x, y]` to `[y, x]`.

**Parameters**

-   `geojson` **([FeatureCollection](http://geojson.org/geojson-spec.html#feature-collection-objects) \| [Feature](http://geojson.org/geojson-spec.html#feature-objects)<any>)** input features
-   `mutate` **\[[boolean](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean)]** allows GeoJSON input to be mutated (significant performance increase if true) (optional, default `false`)

**Examples**

```javascript
var serbia = turf.point([20.566406, 43.421008]);

var saudiArabia = turf.flip(serbia);

//addToMap
var addToMap = [serbia, saudiArabia];
```

Returns **([FeatureCollection](http://geojson.org/geojson-spec.html#feature-collection-objects) \| [Feature](http://geojson.org/geojson-spec.html#feature-objects)<any>)** a feature or set of features of the same type as `input` with flipped coordinates

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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/flip
```

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

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