h3-polyfill is a library and a command line interface to Uber h3 polyfill.
It takes an input polygon as a GeoJSON file and outputs hex as a GeoJSON polygon feature collection.
npm i h3-polyfillconst h3Polyfill = require("h3-polyfill");
const polygon = {
type: "Feature",
properties: {},
geometry: {
type: "Polygon",
coordinates: [
[
[-122.40898669999721, 37.81331899998324],
[-122.35447369999936, 37.71980619999785],
[-122.4798767000009, 37.815157199999845],
[-122.40898669999721, 37.81331899998324]
]
]
}
};
const hex = h3Polyfill(polygon, 7);Usage: h3-polyfill <polygon.geojson> <resolution>Example:
npx h3-polyfill polygon.geojson 7 > hex.geojson