mirror of
https://github.com/Viglino/ol-ext.git
synced 2025-12-08 19:26:29 +00:00
149 lines
4.7 KiB
HTML
149 lines
4.7 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<!--
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Copyright (c) 2015-2018 Jean-Marc VIGLINO,
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released under CeCILL-B (french BSD like) licence: http://www.cecill.info/
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-->
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<title>ol-ext: Overpass OSM layer</title>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="description" content="DBPedia layer for OL3" />
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<meta name="keywords" content="ol3, layer, source, vector, wikipedia, dbpedia" />
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<!-- jQuery -->
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<script type="text/javascript" src="https://code.jquery.com/jquery-1.11.0.min.js"></script>
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<!-- Openlayers -->
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<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/ol@latest/ol.css" />
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<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/ol@latest/dist/ol.js"></script>
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<!-- ol-ext -->
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<link rel="stylesheet" href="../../dist/ol-ext.css" />
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<script type="text/javascript" src="../../dist/ol-ext.js"></script>
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<!-- Pointer events polyfill for old browsers, see https://caniuse.com/#feat=pointer -->
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<script src="https://unpkg.com/elm-pep"></script>
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<!-- ol-ext maki and fontawesome defintions used in fontsymbol -->
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<script type="text/javascript" src="../../dist/extra/FontAwesomeDef.js"></script>
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<link rel="stylesheet" href="../style.css" />
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<style>
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#select img
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{ max-height: 300px;
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}
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</style>
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</head>
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<body >
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<a href="https://github.com/Viglino/ol-ext" class="icss-github-corner"><i></i></a>
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<a href="../../index.html">
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<h1>ol-ext: DBPedia layer</h1>
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</a>
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<p class="info">
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<i>ol.source.Overpass</i> is a vector source that use the
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<a href="https://wiki.openstreetmap.org/wiki/Overpass_API">Overpass API</a> to load <a href="">OSM</a> features.
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<br/>
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You can use filter to choose what kind of features you want to display on the map.
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<a href="https://wiki.openstreetmap.org/wiki/Overpass_API/Language_Guide#Tag_request_clauses_.28or_.22tag_filters.22.29">See API filter tags documentation.</a>
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</p>
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<!-- DIV pour la carte -->
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<div id="map" style="width:600px; height:400px;"></div>
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<div class="options">
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<ul>
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<li>
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Filter:
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<select onchange="setFilter(this.value)">
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<option value="highway=bus_stop">highway=bus_stop</option>
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<option value="leisure">leisure</option>
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<option value="leisure,sport=swimming">leisure,sport=swimming</option>
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<option value="highway,highway!~'crossing|signal'">highway</option>
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</select>
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</li>
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</ul>
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</div>
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<div id="select" class="options" >Select an item.</div>
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<script type="text/javascript">
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// The map
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var map = new ol.Map({
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target: 'map',
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view: new ol.View({
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zoom: 15,
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center: [261204.43490751847, 6250258.191535994]
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}),
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layers: [ new ol.layer.Tile({ name:"OSM", source: new ol.source.OSM() })]
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});
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function setFilter(filter) {
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console.log('filter:',filter.split(','))
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vectorSource = new ol.source.Overpass({
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//relation: false,
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filter: filter.split(','),
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// Tile strategy load at zoom 14
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strategy: ol.loadingstrategy.tile(ol.tilegrid.createXYZ({ minZoom: 14, maxZoom: 14, tileSize:512 })),
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// Bbox strategy : reload at each move
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//strategy: ol.loadingstrategy.bbox,
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});
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vector.setSource(vectorSource);
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}
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// DBPedia layer source
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var vectorSource = new ol.source.Overpass({
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//way: false,
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filter: [ 'highway=bus_stop' ],
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//filter: [ 'leisure' ],
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// filter: [ 'leisure', 'sport=swimming' ],
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// filter: [ 'highway' ],
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// Tile strategy load at zoom 14
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strategy: ol.loadingstrategy.tile(ol.tilegrid.createXYZ({ minZoom: 14, maxZoom: 14, tileSize:512 })),
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// Bbox strategy : reload at each move
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//strategy: ol.loadingstrategy.bbox,
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});
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// Force layer reload on resolution change
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map.getView().on('change:resolution', function(evt) {
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//vectorSource.clear();
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select.getFeatures().clear();
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if (map.getView().getZoom() < 14) $("#select").text("Zoom to load data...");
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else $("#select").first().text("");
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});
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var vector = new ol.layer.Vector({
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name: 'OSM',
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source: vectorSource,
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// Limit resolution to avoid large area request
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maxResolution: 10, // > zoom 14
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});
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map.addLayer(vector);
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// Control Select
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var select = new ol.interaction.Select({
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hitTolerance: 3,
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condition: ol.events.condition.click
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});
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map.addInteraction(select);
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// On selected
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select.getFeatures().on(['add','remove'], function(e) {
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var info = $("#select").html("");
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if (e.type=="add") {
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var el = e.element;
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var ul = $('<ul>').appendTo(info);
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var prop = el.getProperties();
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for (var i in prop) {
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if (i!=='geometry') {
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li = $('<li>')
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.html('<i>'+i+"</i>: "+prop[i])
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.appendTo(ul);
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}
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}
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}
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});
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</script>
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</body>
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</html> |