To help you get started, we've collected the most common ways that wkx is being used within popular public projects.

tmcw / geojson.net / src / ui / file_bar.js View on Github

action: function() {
              const input = prompt("Enter your Hex encoded WKB/EWKB");
              try {
                var decoded = wkx.Geometry.parse(Buffer.from(input, "hex"));
                setGeojson(decoded.toGeoJSON());
                // zoomextent(context); TODO
              } catch (e) {
                console.error(e);
                alert(
                  "Sorry, we were unable to decode that Hex encoded WKX data"
                );
              }
            }
          },

View more ways to use wkx

wkx

A WKT/WKB/EWKT/EWKB/TWKB/GeoJSON parser and serializer with support for

• Point
• LineString
• Polygon
• MultiPoint
• MultiLineString
• MultiPolygon
• GeometryCollection

Examples

The following examples show you how to work with wkx.

var wkx = require('wkx');

//Parsing a WKT string
var geometry = wkx.Geometry.parse('POINT(1 2)');

//Parsing an EWKT string
var geometry = wkx.Geometry.parse('SRID=4326;POINT(1 2)');

//Parsing a node Buffer containing a WKB object
var geometry = wkx.Geometry.parse(wkbBuffer);

//Parsing a node Buffer containing an EWKB object
var geometry = wkx.Geometry.parse(ewkbBuffer);

//Parsing a node Buffer containing a TWKB object
var geometry = wkx.Geometry.parseTwkb(twkbBuffer);

//Parsing a GeoJSON object
var geometry = wkx.Geometry.parseGeoJSON({ type: 'Point', coordinates: [1, 2] });

//Serializing a Point geometry to WKT
var wktString = new wkx.Point(1, 2).toWkt();

//Serializing a Point geometry to WKB
var wkbBuffer = new wkx.Point(1, 2).toWkb();

//Serializing a Point geometry to EWKT
var ewktString = new wkx.Point(1, 2, undefined, undefined, 4326).toEwkt();

//Serializing a Point geometry to EWKB
var ewkbBuffer = new wkx.Point(1, 2, undefined, undefined, 4326).toEwkb();

//Serializing a Point geometry to TWKB
var twkbBuffer = new wkx.Point(1, 2).toTwkb();

//Serializing a Point geometry to GeoJSON
var geoJSONObject = new wkx.Point(1, 2).toGeoJSON();

Browser

To use wkx in a webpage, simply copy a built browser version from dist/ into your project, and use a script tag to include it:

If you use browserify for your project, you can simply npm install wkx --save, and just require wkx as usual in your code.

Regardless of which of the preceeding options you choose, using wkx in the browser will look the same:

var wkx = require('wkx');

var geometry = wkx.Geometry.parse('POINT(1 2)');

console.log(geometry.toGeoJSON());

In addition to the wkx module, the browser versions also export buffer, which is useful for parsing WKB:

var Buffer = require('buffer').Buffer;
var wkx = require('wkx');

var wkbBuffer = new Buffer('0101000000000000000000f03f0000000000000040', 'hex');
var geometry = wkx.Geometry.parse(wkbBuffer);

console.log(geometry.toGeoJSON());