dobbyscan

dobbyscan  

A very fast density based clustering JavaScript library for geographic points. Implements a variation of DBSCAN with great circle distance metric.

$3

``js
const clusters = dobbyscan(points, radius, p => p.lon, p => p.lat);
`

$3

#### dobbyscan(points, radius[, getLng, getLat])

Returns an array of clusters, where each cluster is an array of points (from the input array).

- points: an array of input points of an arbitrary format.
- radius: density clustering radius in kilometers.
- getLng: (optional) a function that returns longitude given an input point, (p) => p[0] by default.
- getLat: (optional) a function that returns latitude given an input point, (p) => p[1] by default.

$3

This library is incredibly fast — run bench.js to see it cluster 135k points in one second.

$3

`
npm install dobbyscan
``