node-red-contrib-tak-registration/node_modules/@turf/centroid/README.md

A Node-RED node to register to TAK and to help wrap files as datapackages to send to TAK

# @turf/centroid

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## centroid

Takes one or more features and calculates the centroid using the mean of all vertices.
This lessens the effect of small islands and artifacts when calculating the centroid of a set of polygons.

**Parameters**

-   `geojson` **[GeoJSON][1]** GeoJSON to be centered
-   `options` **[Object][2]** Optional Parameters (optional, default `{}`)
    -   `options.properties` **[Object][2]** an Object that is used as the [Feature][3]'s properties (optional, default `{}`)

**Examples**

```javascript
var polygon = turf.polygon([[[-81, 41], [-88, 36], [-84, 31], [-80, 33], [-77, 39], [-81, 41]]]);

var centroid = turf.centroid(polygon);

//addToMap
var addToMap = [polygon, centroid]
```

Returns **[Feature][4]&lt;[Point][5]>** the centroid of the input features

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

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

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

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

[5]: https://tools.ietf.org/html/rfc7946#section-3.1.2

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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/centroid
```

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

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