87 lines
2.7 KiB
Markdown
87 lines
2.7 KiB
Markdown
# @turf/shortest-path
|
|
|
|
<!-- Generated by documentation.js. Update this documentation by updating the source code. -->
|
|
|
|
## shortestPath
|
|
|
|
Returns the shortest [path][1] from [start][2] to [end][2] without colliding with
|
|
any [Feature][3] in [ obstacles][4]
|
|
|
|
**Parameters**
|
|
|
|
- `start` **[Coord][5]** point
|
|
- `end` **[Coord][5]** point
|
|
- `options` **[Object][6]** optional parameters (optional, default `{}`)
|
|
- `options.obstacles` **([Geometry][7] \| [Feature][8] \| [FeatureCollection][9]<[Polygon][10]>)?** areas which path cannot travel
|
|
- `options.minDistance` **[number][11]?** minimum distance between shortest path and obstacles
|
|
- `options.units` **[string][12]** unit in which resolution & minimum distance will be expressed in; it can be degrees, radians, miles, kilometers, ... (optional, default `'kilometers'`)
|
|
- `options.resolution` **[number][11]** distance between matrix points on which the path will be calculated (optional, default `100`)
|
|
|
|
**Examples**
|
|
|
|
```javascript
|
|
var start = [-5, -6];
|
|
var end = [9, -6];
|
|
var options = {
|
|
obstacles: turf.polygon([[[0, -7], [5, -7], [5, -3], [0, -3], [0, -7]]])
|
|
};
|
|
|
|
var path = turf.shortestPath(start, end, options);
|
|
|
|
//addToMap
|
|
var addToMap = [start, end, options.obstacles, path];
|
|
```
|
|
|
|
Returns **[Feature][8]<[LineString][13]>** shortest path between start and end
|
|
|
|
[1]: https://tools.ietf.org/html/rfc7946#section-3.1.4
|
|
|
|
[2]: https://tools.ietf.org/html/rfc7946#section-3.1.2
|
|
|
|
[3]: https://tools.ietf.org/html/rfc7946#section-3.2
|
|
|
|
[4]: FeatureCollection<Polygon>
|
|
|
|
[5]: https://tools.ietf.org/html/rfc7946#section-3.1.1
|
|
|
|
[6]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object
|
|
|
|
[7]: https://tools.ietf.org/html/rfc7946#section-3.1
|
|
|
|
[8]: https://tools.ietf.org/html/rfc7946#section-3.2
|
|
|
|
[9]: https://tools.ietf.org/html/rfc7946#section-3.3
|
|
|
|
[10]: https://tools.ietf.org/html/rfc7946#section-3.1.6
|
|
|
|
[11]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number
|
|
|
|
[12]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String
|
|
|
|
[13]: https://tools.ietf.org/html/rfc7946#section-3.1.4
|
|
|
|
<!-- 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/shortest-path
|
|
```
|
|
|
|
Or install the Turf module that includes it as a function:
|
|
|
|
```sh
|
|
$ npm install @turf/turf
|
|
```
|