Edit

OSM XML

Example of using the OSM XML source.

OSM XML vector data is loaded dynamically from a the Overpass API using a bbox strategy. Note that panning and zooming will eventually lead to "Too many requests" errors from the Overpass API.

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index.html<!DOCTYPE html>
<html lang="en">
  <head>
    <title>OSM XML</title>
    <!-- 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>
    <style>
      .map {
        width: 100%;
        height:400px;
      }
    </style>
  </head>
  <body>
    <div id="map" class="map"></div>
    <script src="index.js"></script>
  </body>
</html>
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index.jsimport 'ol/ol.css';
import Map from 'ol/Map';
import View from 'ol/View';
import OSMXML from 'ol/format/OSMXML';
import {Tile as TileLayer, Vector as VectorLayer} from 'ol/layer';
import {bbox as bboxStrategy} from 'ol/loadingstrategy';
import {transformExtent} from 'ol/proj';
import BingMaps from 'ol/source/BingMaps';
import VectorSource from 'ol/source/Vector';
import {Circle as CircleStyle, Fill, Stroke, Style} from 'ol/style';

var map = null;

var styles = {
  'amenity': {
    'parking': new Style({
      stroke: new Stroke({
        color: 'rgba(170, 170, 170, 1.0)',
        width: 1
      }),
      fill: new Fill({
        color: 'rgba(170, 170, 170, 0.3)'
      })
    })
  },
  'building': {
    '.*': new Style({
      zIndex: 100,
      stroke: new Stroke({
        color: 'rgba(246, 99, 79, 1.0)',
        width: 1
      }),
      fill: new Fill({
        color: 'rgba(246, 99, 79, 0.3)'
      })
    })
  },
  'highway': {
    'service': new Style({
      stroke: new Stroke({
        color: 'rgba(255, 255, 255, 1.0)',
        width: 2
      })
    }),
    '.*': new Style({
      stroke: new Stroke({
        color: 'rgba(255, 255, 255, 1.0)',
        width: 3
      })
    })
  },
  'landuse': {
    'forest|grass|allotments': new Style({
      stroke: new Stroke({
        color: 'rgba(140, 208, 95, 1.0)',
        width: 1
      }),
      fill: new Fill({
        color: 'rgba(140, 208, 95, 0.3)'
      })
    })
  },
  'natural': {
    'tree': new Style({
      image: new CircleStyle({
        radius: 2,
        fill: new Fill({
          color: 'rgba(140, 208, 95, 1.0)'
        }),
        stroke: null
      })
    })
  }
};

var vectorSource = new VectorSource({
  format: new OSMXML(),
  loader: function(extent, resolution, projection) {
    var epsg4326Extent = transformExtent(extent, projection, 'EPSG:4326');
    var client = new XMLHttpRequest();
    client.open('POST', 'https://overpass-api.de/api/interpreter');
    client.addEventListener('load', function() {
      var features = new OSMXML().readFeatures(client.responseText, {
        featureProjection: map.getView().getProjection()
      });
      vectorSource.addFeatures(features);
    });
    var query = '(node(' +
        epsg4326Extent[1] + ',' + epsg4326Extent[0] + ',' +
        epsg4326Extent[3] + ',' + epsg4326Extent[2] +
        ');rel(bn)->.foo;way(bn);node(w)->.foo;rel(bw););out meta;';
    client.send(query);
  },
  strategy: bboxStrategy
});

var vector = new VectorLayer({
  source: vectorSource,
  style: function(feature) {
    for (var key in styles) {
      var value = feature.get(key);
      if (value !== undefined) {
        for (var regexp in styles[key]) {
          if (new RegExp(regexp).test(value)) {
            return styles[key][regexp];
          }
        }
      }
    }
    return null;
  }
});

var raster = new TileLayer({
  source: new BingMaps({
    imagerySet: 'Aerial',
    key: 'Your Bing Maps Key from http://www.bingmapsportal.com/ here'
  })
});

map = new Map({
  layers: [raster, vector],
  target: document.getElementById('map'),
  view: new View({
    center: [739218, 5906096],
    maxZoom: 19,
    zoom: 17
  })
});
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package.json{
  "name": "vector-osm",
  "dependencies": {
    "ol": "6.1.1"
  },
  "devDependencies": {
    "parcel": "1.11.0"
  },
  "scripts": {
    "start": "parcel index.html",
    "build": "parcel build --experimental-scope-hoisting --public-url . index.html"
  }
}