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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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