WKT

This example uses OpenLayers v4.0.1. The latest is v.

#### WKT

Example of using the WKT parser.

Create features from geometries in WKT (Well Known Text) format.

Related API documentation:

- ol.Map
,
- ol.View
,
- ol.format.WKT
,
- ol.layer.Tile
,
- ol.layer.Vector
,
- ol.source.OSM
,
- ol.source.Vector

Copy Edit
WKT Example of using the WKT parser. var raster = new ol.layer.Tile({ source: new ol.source.OSM() }); var wkt = 'POLYGON((10.689 -25.092, 34.595 ' + '-20.170, 38.814 -35.639, 13.502 ' + '-39.155, 10.689 -25.092))'; var format = new ol.format.WKT(); var feature = format.readFeature(wkt, { dataProjection: 'EPSG:4326', featureProjection: 'EPSG:3857' }); var vector = new ol.layer.Vector({ source: new ol.source.Vector({ features: [feature] }) }); var map = new ol.Map({ layers: [raster, vector], target: 'map', view: new ol.View({ center: [2952104.0199, -3277504.823], zoom: 4 }) }); <div id="map" class="map"></div>

    <!DOCTYPE html>
    <html>
      <head>
        <title>WKT</title>
        <link rel="stylesheet" href="https://openlayers.org/en/v4.0.1/css/ol.css" type="text/css">
        <!-- The line below is only needed for old environments like Internet Explorer and Android 4.x -->
        <script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL"></script>
        <script src="https://openlayers.org/en/v4.0.1/build/ol.js"></script>
      </head>
      <body>
        <div id="map" class="map"></div>
        <script>
          var raster = new ol.layer.Tile({
            source: new ol.source.OSM()
          });

          var wkt = 'POLYGON((10.689 -25.092, 34.595 ' +
              '-20.170, 38.814 -35.639, 13.502 ' +
              '-39.155, 10.689 -25.092))';

          var format = new ol.format.WKT();

          var feature = format.readFeature(wkt, {
            dataProjection: 'EPSG:4326',
            featureProjection: 'EPSG:3857'
          });

          var vector = new ol.layer.Vector({
            source: new ol.source.Vector({
              features: [feature]
            })
          });

          var map = new ol.Map({
            layers: [raster, vector],
            target: 'map',
            view: new ol.View({
              center: [2952104.0199, -3277504.823],
              zoom: 4
            })
          });
        </script>
      </body>
    </html>