turf

A modular geospatial engine written in JavaScript

Checks to see if a point is inside of a polygon.

Examples of Turfjs visualized with mapbox.js

turf website

determine whether two geojson objects are equal

Takes a bounding box and a cell depth and outputs a feature collection of points in a grid.

Makes outer rings cw, inner rings ccw. Or reversed

Clips a Feature by a bbox

find the union of geographic features

Divide a linestring into segments of specified length

erase spatial features

Calculates the distance between two point features in degrees, radians, miles, or kilometers.

Turf flatten module

Buffers a point, linestring, or polygon Feature/FeatureCollection to a given radius. Units supported are miles, kilometers, and degrees.

Takes a FeatureCollection of points with z values and an array of value breaks and generates filled contour isobands.

find the intersection of features

an example of using turf on a server with node.js

an example of how to use Turf for a scripting task with node.

Segment a LineString by Features

Takes a set of overlapping polygons and returns non overlapping donuts.

Create voronoi polygons from a set of points

Vincenty's direct formula computes the location of a point which is a given distance and direction from another point.

Vincenty's inverse formula computes the geographical distance and direction between two given points.

Turf bboxify module

Gets the Pole of Inaccessibility of the input polygon

Get Voronoi cells constrained to a Polygon

Cut a polygon with a polyline

poly2tri wrapper for TURF