72 lines
2.0 KiB
Markdown
72 lines
2.0 KiB
Markdown
# @turf/center
|
|
|
|
<!-- Generated by documentation.js. Update this documentation by updating the source code. -->
|
|
|
|
## center
|
|
|
|
Takes a [Feature][1] or [FeatureCollection][2] and returns the absolute center point of all features.
|
|
|
|
**Parameters**
|
|
|
|
- `geojson` **[GeoJSON][3]** GeoJSON to be centered
|
|
- `options` **[Object][4]** Optional parameters (optional, default `{}`)
|
|
- `options.properties` **[Object][4]** Translate GeoJSON Properties to Point (optional, default `{}`)
|
|
- `options.bbox` **[Object][4]** Translate GeoJSON BBox to Point (optional, default `{}`)
|
|
- `options.id` **[Object][4]** Translate GeoJSON Id to Point (optional, default `{}`)
|
|
|
|
**Examples**
|
|
|
|
```javascript
|
|
var features = turf.points([
|
|
[-97.522259, 35.4691],
|
|
[-97.502754, 35.463455],
|
|
[-97.508269, 35.463245]
|
|
]);
|
|
|
|
var center = turf.center(features);
|
|
|
|
//addToMap
|
|
var addToMap = [features, center]
|
|
center.properties['marker-size'] = 'large';
|
|
center.properties['marker-color'] = '#000';
|
|
```
|
|
|
|
Returns **[Feature][5]<[Point][6]>** a Point feature at the absolute center point of all input features
|
|
|
|
[1]: https://tools.ietf.org/html/rfc7946#section-3.2
|
|
|
|
[2]: https://tools.ietf.org/html/rfc7946#section-3.3
|
|
|
|
[3]: https://tools.ietf.org/html/rfc7946#section-3
|
|
|
|
[4]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object
|
|
|
|
[5]: https://tools.ietf.org/html/rfc7946#section-3.2
|
|
|
|
[6]: https://tools.ietf.org/html/rfc7946#section-3.1.2
|
|
|
|
<!-- This file is automatically generated. Please don't edit it directly:
|
|
if you find an error, edit the source file (likely index.js), and re-run
|
|
./scripts/generate-readmes in the turf project. -->
|
|
|
|
---
|
|
|
|
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/center
|
|
```
|
|
|
|
Or install the Turf module that includes it as a function:
|
|
|
|
```sh
|
|
$ npm install @turf/turf
|
|
```
|