@mapbox/geojson-extent

What is @mapbox/geojson-extent?

@mapbox/geojson-extent is an npm package that provides utilities for calculating the bounding box of GeoJSON objects. It is useful for determining the spatial extent of geographic data represented in GeoJSON format.

What are @mapbox/geojson-extent's main functionalities?

Calculate Bounding Box

This feature allows you to calculate the bounding box of a GeoJSON object. The bounding box is represented as an array of four numbers: [minX, minY, maxX, maxY].

const geojsonExtent = require('@mapbox/geojson-extent');
const geojson = {
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "geometry": {
        "type": "Point",
        "coordinates": [102.0, 0.5]
      },
      "properties": {
        "prop0": "value0"
      }
    },
    {
      "type": "Feature",
      "geometry": {
        "type": "LineString",
        "coordinates": [
          [102.0, 0.0],
          [103.0, 1.0],
          [104.0, 0.0],
          [105.0, 1.0]
        ]
      },
      "properties": {
        "prop0": "value0",
        "prop1": 0.0
      }
    }
  ]
};
const bbox = geojsonExtent(geojson);
console.log(bbox); // Output: [102, 0, 105, 1]

Other packages similar to @mapbox/geojson-extent

turf-bbox

turf-bbox is a module from the Turf.js library that calculates the bounding box of any GeoJSON object. It offers similar functionality to @mapbox/geojson-extent but is part of a larger suite of geospatial analysis tools provided by Turf.js.

geojson-bbox

geojson-bbox is a lightweight npm package that calculates the bounding box of GeoJSON objects. It is similar to @mapbox/geojson-extent in terms of functionality but is more focused on simplicity and minimalism.

README

geojson-extent

Compute an extent given a GeoJSON object.

install

npm install --save @mapbox/geojson-extent

example

Live example with Mapbox Static Map API

var geojsonExtent = require('geojson-extent');

geojsonExtent({ type: 'Point', coordinates: [0, 0] }); // returns 0,0,0,0 extent

bin

Provides a binary that takes GeoJSON as stdin and returns a JSON stringified array of extent data.

$ npm install -g geojson-extent
$ geojson-extent < file.geojson

Given an argument of leaflet, this will return Leaflet-formatted data instead.

$ geojson-extent leaflet < file.geojson

api

extent(geojson)

Given any valid GeoJSON object, return bounds in the form [WSEN]. Invalid objects will return null.

extent.polygon(geojson)

Given any valid GeoJSON object, return bounds in the form of a GeoJSON polygon object. Invalid objects will return null.

extent.bboxify(geojson)

Add bounding boxes to all appropriate GeoJSON objects - Feature, FeatureCollection, and Geometry.