# @turf/boolean-clockwise

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## booleanClockwise

Takes a ring and return true or false whether or not the ring is clockwise or counter-clockwise.

### Parameters

*   `line` **([Feature][1]<[LineString][2]> | [LineString][2] | [Array][3]<[Array][3]<[number][4]>>)** to be evaluated

### Examples

```javascript
var clockwiseRing = turf.lineString([[0,0],[1,1],[1,0],[0,0]]);
var counterClockwiseRing = turf.lineString([[0,0],[1,0],[1,1],[0,0]]);

turf.booleanClockwise(clockwiseRing)
//=true
turf.booleanClockwise(counterClockwiseRing)
//=false
```

Returns **[boolean][5]** true/false

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

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

[3]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array

[4]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number

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

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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/boolean-clockwise
```

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

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