An astronomical library

A star map with D3.js

Scale of Cartesian Coordinates

The primary entrypoint to the Firebase JS SDK

Find self-intersections in geojson polygon (possibly with interior rings)

TypeScript definitions for d3-polygon

a point geometry with transforms

A Javascript function for reading a variety of coordinate formats and converting to decimal numbers. Builds on other efforts by returning the verbatim coordinates and the decimal coordinates all in one object.

Proj4js is a JavaScript library to transform point coordinates from one coordinate system to another, including datum transformations.

return all coordinates from a geojson object

visx scale

Converts line(s) to polygon(s).

Martinez polygon clipping algorithm, does boolean operation on polygons (multipolygons, polygons with holes etc): intersection, union, difference, xor

visx point

Truncates precision of GeoJSON coordinates.

Finds the angle formed by two adjacent segments.

Removes redundant coordinates from a GeoJSON Geometry.

Utility script that takes an easing function as input and outputs a coordinate set with adjustable precision/resolution.

A React hook that allows you to use a ResizeObserver to measure an element's size.

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