tilebelt

simple tile utilities

install

npm install @mapbox/tilebelt

usage

import * as tilebelt from '@mapbox/tilebelt';

const tile = [10, 15, 8] // x,y,z

tilebelt.tileToGeoJSON(tile);
// {
//   "type": "Polygon",
//   "coordinates": [
//     [
//       [ -165.9375, 82.8533822917608 ],
//       [ -165.9375, 82.67628497834903 ],
//       [ -164.53125, 82.67628497834903 ],
//       [ -164.53125, 82.8533822917608 ],
//       [ -165.9375, 82.8533822917608 ]
//     ]
//   ]
// }

tilebelt.getParent(tile);
// [ 5, 7, 7 ]

features

function | description ---|--- tileToGeoJSON(tile) | get a geojson representation of a tile tileToBBOX(tile) | get the bbox of a tile bboxToTile(bbox) | get the smallest tile to cover a bbox getChildren(tile) | get the 4 tiles one zoom level higher getParent(tile) | get the tile one zoom level lower getSiblings(tile) | get the 4 sibling tiles for a tile hasSiblings(tiles, tile) | check to see if an array of tiles contains a tiles siblings hasTile(tiles, tile) | check to see if an array of tiles contains a particular tile tilesEqual(tile1, tile2) | check to see if two tiles are the same tileToQuadkey(tile) | get the quadkey for a tile quadkeyToTile(quadkey) | get the tile for a quadkey pointToTile(lon, lat, zoom) | get the tile for a point at a specified zoom level pointToTileFraction(lon, lat, zoom) | get the precise fractional tile location for a point at a zoom level

developing

npm ci          # install deps
npm test        # tests
npm run bench   # run benchmarks
npm run format  # format using prettier