@turf/kinks

kinks

Takes a [linestring][1], [multi-linestring][2],
[multi-polygon][3] or [polygon][4] and
returns [points][5] at all self-intersections.

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* featureIn [Feature][6]<([LineString][1] | [MultiLineString][2] | [MultiPolygon][3] | [Polygon][4])> input feature

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``javascript
var poly = turf.polygon([[
[-12.034835, 8.901183],
[-12.060413, 8.899826],
[-12.03638, 8.873199],
[-12.059383, 8.871418],
[-12.034835, 8.901183]
]]);

var kinks = turf.kinks(poly);

//addToMap
var addToMap = [poly, kinks]
`

Returns [FeatureCollection][7]<[Point][5]> self-intersections

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

[2]: https://tools.ietf.org/html/rfc7946#section-3.1.5

[3]: https://tools.ietf.org/html/rfc7946#section-3.1.7

[4]: https://tools.ietf.org/html/rfc7946#section-3.1.6

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

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

[7]: https://tools.ietf.org/html/rfc7946#section-3.3

---

This module is part of the Turfjs project, an open source module collection dedicated to geographic algorithms. It is maintained in the Turfjs/turf repository, where you can create PRs and issues.

$3

Install this single module individually:

`sh
$ npm install @turf/kinks
`

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

`sh
$ npm install @turf/turf
``