README

reproject-bbox

Reproject a Bounding Box

install

npm install reproject-bbox

basic usage


import reprojectBoundingBox from "reproject-bbox";

const bbox = reprojectBoundingBox({
  bbox: [ -122.51, 40.97, -122.34, 41.11 ],
  
  // spatial reference system of input bounding box
  from: 4326,
  
  // convert bounding box to this spatial reference system
  to: 3857
});

// bbox is [-13637750.817083945, 5007917.677222896, -13618826.503649088, 5028580.202823918]

advanced usage

proj4-fully-loaded dependency

This library depends on proj4-fully-loaded. If proj4-fully-loaded isn't found (perhaps because you used null-loader, then reproject-bbox will attempt to look for a valid proj4 at window.proj4.

pluggable

If you don't need any dependencies and would prefer to pass in a reprojection function, you can do so:

import reprojectBoundingBox from "reproject-bbox/pluggable.js";

const bbox = reprojectBoundingBox({
  bbox: [ -122.51, 40.97, -122.34, 41.11 ],
  reproject: proj4("EPSG:4326", "EPSG:3857").forward,
});

// bbox is [-13637750.817083945, 5007917.677222896, -13618826.503649088, 5028580.202823918]

Usage no npm install needed!