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OpenLayers 3 spatial filter intersect example
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset='utf-8'> | |
| <title>WFS - GetFeature</title> | |
| <link rel="stylesheet" href="https://openlayers.org/en/v3.20.0/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/v3.20.0/build/ol.js"></script> | |
| </head> | |
| <body> | |
| <div id="map" class="map"></div> | |
| <script> | |
| var vectorSource = new ol.source.Vector(); | |
| var vector = new ol.layer.Vector({ | |
| source: vectorSource, | |
| style: new ol.style.Style({ | |
| stroke: new ol.style.Stroke({ | |
| color: 'rgba(0, 0, 255, 1.0)', | |
| width: 2 | |
| }) | |
| }) | |
| }); | |
| var raster = new ol.layer.Tile({ | |
| source: new ol.source.OSM() | |
| }); | |
| var map = new ol.Map({ | |
| layers: [raster, vector], | |
| target: document.getElementById('map'), | |
| view: new ol.View({ | |
| center: ol.proj.fromLonLat([-74.21686064251395, 45.375053394861254]), | |
| maxZoom: 18, | |
| zoom: 7 | |
| }) | |
| }); | |
| var polygon = new ol.geom.Polygon([ | |
| [ | |
| [ | |
| -76.13890000314728, | |
| 45.71589184909814 | |
| ], | |
| [ | |
| -76.35862656564728, | |
| 44.69416594907523 | |
| ], | |
| [ | |
| -74.46897812814728, | |
| 44.66291807088572 | |
| ], | |
| [ | |
| -71.92015000314728, | |
| 45.191840069034185 | |
| ], | |
| [ | |
| -73.63401719064727, | |
| 46.17424709227828 | |
| ], | |
| [ | |
| -76.13890000314728, | |
| 45.71589184909814 | |
| ] | |
| ] | |
| ]); | |
| // Correct inverted X, Y coordinates | |
| polygon.applyTransform(function (coords, coords2, stride) { | |
| for (var j = 0; j < coords.length;j += stride) { | |
| var y = coords[j]; | |
| var x = coords[j + 1]; | |
| coords[j] = x; | |
| coords[j + 1] = y; | |
| }; | |
| }); | |
| // generate a GetFeature request | |
| var featureRequest = new ol.format.WFS().writeGetFeature({ | |
| srsName: 'EPSG:3857', | |
| featureNS: 'http://openstreemap.org', | |
| featurePrefix: 'osm', | |
| featureTypes: ['water_areas'], | |
| outputFormat: 'gml3', | |
| filter: ol.format.filter.and( | |
| ol.format.filter.intersects('the_geom', polygon, 'EPSG:4326'), | |
| ol.format.filter.equalTo('waterway', 'riverbank') | |
| ) | |
| }); | |
| console.log(new XMLSerializer().serializeToString(featureRequest)); | |
| // then post the request and add the received features to a layer | |
| fetch('https://ahocevar.com/geoserver/wfs', { | |
| method: 'POST', | |
| body: new XMLSerializer().serializeToString(featureRequest) | |
| }).then(function(response) { | |
| return response.text(); | |
| }).then(function(text) { | |
| var features = new ol.format.WFS().readFeatures(text); | |
| vectorSource.addFeatures(features); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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