Libraries of geodesy functions

Lightweight utility for input validation and data extraction in Turf.js. Ensures GeoJSON inputs are in the correct format and extracts specific components like coordinates or geometries.

Astronomy calculation for Sun, Moon, and planets.

The library to sort array of objects by distance from a given point

Coordinates for react-financial-charts

Create contours from non-gridded data with meandering triangles.

Spherical Voronoi Diagram and Delaunay Triangulation

Utility to measure view bounds

Takes input features and flips all of their coordinates.

svg path parser

A library to edit lottie-web animations dynamically

Check two valid geojson geometries for equality.

observerly's lightweight, zero-dependency, type safe astrometry library written in Typescript for calculating the position of celestial objects in the sky.

2D webgl plots

Takes a complex (i.e. self-intersecting) geojson polygon, and breaks it down into its composite simple, non-self-intersecting one-ring polygons.

validate and sanity-check geojson files

A collection of fast approximations to common geographic measurements.

[](https://npm.im/@dnd-kit/geometry)

Generate hexmaps from data that uses the Open Data Institute's HexJSON format.

redefine an svg path with absolute coordinates