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A WKT/WKB/EWKT/EWKB/TWKB/GeoJSON parser and serializer with support for
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();
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:
<script src="wkx.js"></script>
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());
FAQs
A WKT/WKB/EWKT/EWKB/TWKB/GeoJSON parser and serializer
The npm package wkx receives a total of 1,760,372 weekly downloads. As such, wkx popularity was classified as popular.
We found that wkx demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
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