Example of using the WKB parser.
Create features from geometries in WKB (Well Known Binary) format.
import 'ol/ol.css';
import Map from 'ol/Map';
import View from 'ol/View';
import WKB from 'ol/format/WKB';
import {OSM, Vector as VectorSource} from 'ol/source';
import {Tile as TileLayer, Vector as VectorLayer} from 'ol/layer';
const raster = new TileLayer({
source: new OSM(),
});
const wkb =
'0103000000010000000500000054E3A59BC4602540643BDF4F8D1739C05C8FC2F5284C4140EC51B81E852B34C0D578E926316843406F1283C0CAD141C01B2FDD2406012B40A4703D0AD79343C054E3A59BC4602540643BDF4F8D1739C0';
const format = new WKB();
const feature = format.readFeature(wkb, {
dataProjection: 'EPSG:4326',
featureProjection: 'EPSG:3857',
});
const vector = new VectorLayer({
source: new VectorSource({
features: [feature],
}),
});
const map = new Map({
layers: [raster, vector],
target: 'map',
view: new View({
center: [2952104.0199, -3277504.823],
zoom: 4,
}),
});
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>WKB</title>
<!-- Pointer events polyfill for old browsers, see https://caniuse.com/#feat=pointer -->
<script src="https://unpkg.com/elm-pep"></script>
<!-- The line below is only needed for old environments like Internet Explorer and Android 4.x -->
<script src="https://cdn.polyfill.io/v3/polyfill.min.js?features=fetch,requestAnimationFrame,Element.prototype.classList,URL,TextDecoder,Number.isInteger"></script>
<style>
.map {
width: 100%;
height:400px;
}
</style>
</head>
<body>
<div id="map" class="map"></div>
<script src="main.js"></script>
</body>
</html>
{
"name": "wkb",
"dependencies": {
"ol": "6.6.1"
},
"devDependencies": {
"parcel": "^2.0.0-beta.1"
},
"scripts": {
"start": "parcel index.html",
"build": "parcel build --public-url . index.html"
}
}