npm install wkx-tswkx-ts is a typescript version of the wkx library.
A WKT/WKB/EWKT/EWKB/TWKB/GeoJSON parser and serializer with support for
- Point
- LineString
- Polygon
- MultiPoint
- MultiLineString
- MultiPolygon
- GeometryCollection
The following examples show you how to work with wkx.
import { Geometry, Point } from 'wkx-ts';
//Parsing a WKT string
var geometry = Geometry.parse('POINT(1 2)');
//Parsing an EWKT string
var geometry = Geometry.parse('SRID=4326;POINT(1 2)');
//Parsing a node Buffer containing a WKB object
var geometry = Geometry.parse(wkbBuffer);
//Parsing a node Buffer containing an EWKB object
var geometry = Geometry.parse(ewkbBuffer);
//Parsing a node Buffer containing a TWKB object
var geometry = Geometry.parseTwkb(twkbBuffer);
//Parsing a GeoJSON object
var geometry = Geometry.parseGeoJSON({ type: 'Point', coordinates: [1, 2] });
//Serializing a Point geometry to WKT
var wktString = new Point(1, 2).toWkt();
//Serializing a Point geometry to WKB
var wkbBuffer = new Point(1, 2).toWkb();
//Serializing a Point geometry to EWKT
var ewktString = new Point(1, 2, 0, 0, 4326).toEwkt();
//Serializing a Point geometry to EWKB
var ewkbBuffer = new Point(1, 2, 0, 0, 4326).toEwkb();
//Serializing a Point geometry to TWKB
var twkbBuffer = new Point(1, 2).toTwkb();
//Serializing a Point geometry to GeoJSON
var geoJSONObject = new Point(1, 2).toGeoJSON();Regardless of which of the preceeding options you choose, using wkx in the browser will look the same:
import { Geometry } from 'wkx-ts';
const geometry = Geometry.parse('POINT(1 2)');
console.log(geometry.toGeoJSON());In addition to the wkx-ts module, you should install the buffer module to use the Buffer class in the browser.
npm install bufferimport {Buffer} from 'buffer/index'; // To use the node_modules version of the Buffer class
import { Geometry } from 'wkx-ts';
const wkbBuffer = new Buffer('0101000000000000000000f03f0000000000000040', 'hex');
const geometry = Geometry.parse(wkbBuffer);
console.log(geometry.toGeoJSON());