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<!DOCTYPE html>      <html class="not-ie">  <head> <meta charset="utf-8"> <title>Spatial Queries on a Feature Layer | Esri Leaflet</title> <meta name="description" content="Create detailed spatial queries like point within polygon or line intersects polygons with Feature Layer queries. 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Some combinations will not result in any features being highlighted. </div> <div id="map-wrapper"> <style> #panel { position: absolute; top: 10px; right: 10px; z-index: 10; background: white; padding: 10px; } </style> <div id="map"></div> <div id="panel" class="leaflet-bar"> Neighborhoods <select name="relation" id="relationSelect"> <option value="within">Within<options> <option value="contains">Contains<options> <option value="intersects">Intersects<options> <option value="overlaps">Overlaps<options> </select> <select name="geometry" id="geometrySelect"> <option value="bounds">Bounds<options> <option value="point">Point<options> <option value="line">Line<options> <option value="polygon">Polygon<options> </select> </div> <script> var map = L.map("map").setView([45.525231693565054, -122.62836456298828], 11); L.esri.basemapLayer("Topographic").addTo(map); // create our layer neighborhoods = L.esri.featureLayer({ url: "https://services.arcgis.com/rOo16HdIMeOBI4Mb/arcgis/rest/services/Neighborhoods_pdx/FeatureServer/0", style: { color: 'gray', weight: 1 } }).addTo(map); // create a bounds object to query against var bounds = L.latLngBounds([ [45.494555728818014, -122.69153594970703], [45.538098589494005, -122.60845184326172] ]); // create a marker object to query against var marker = L.marker([45.57103404296416, -122.68638610839842 ]).addTo(map); // create a rectangle to visualize the bounds var rect = L.rectangle(bounds, { color: 'blue', weight: 2 }).addTo(map); // create a line to query against var line = L.polyline([ [45.55925642651572, -122.61188507080078], [45.50225636595613, -122.56278991699217], [45.48324350868221, -122.62046813964844] ], { color: 'blue', weight: 2 }).addTo(map); // create a polygon to query against var polygon = L.polygon([ [45.48926092988004, -122.73719787597655], [45.48637264792543, -122.68844604492186], [45.46253867087026, -122.68226623535156], [45.441103561983795, -122.69359588623047], [45.44471679159555, -122.7224349975586], [45.46109386344247, -122.73822784423828], [45.482521374942834, -122.7341079711914 ], [45.48926092988004, -122.73719787597655] ], { color: 'blue', weight: 2 }).addTo(map); // collect geometries into an object so we can reference them later var geometries = { bounds: bounds, line: line, polygon: polygon, point: marker }; // get references to our <select> elements var relationship = document.getElementById('relationSelect'); var geometry = document.getElementById('geometrySelect'); var previousIds = []; // reset all features back to their regularly defined styles function reset(){ for (var i = previousIds.length - 1; i >= 0; i--) { neighborhoods.resetStyle(previousIds[i]); }; } // query the API and highlight features function query(){ reset(); // lookup our input geometry var inputGeometry = geometries[geometry.value]; // query the service executing the selected relation with the selected input geometry neighborhoods.query()[relationship.value](inputGeometry).ids(function(error, ids){ previousIds = ids; for (var i = ids.length - 1; i >= 0; i--) { neighborhoods.setFeatureStyle(ids[i], { color: 'red', weight: 2 }); }; }); } // query when an input changes geometry.addEventListener('change', query); relationship.addEventListener('change', query); // once all neighborhoods have loaded run the default query neighborhoods.once('load', function(){ query(); }); </script> </div> <pre><code class="language-xml"><html> <head> <meta charset=utf-8 /> <title>Spatial Queries on a Feature Layer</title> <meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />  <link rel="stylesheet" href="//cdn.jsdelivr.net/leaflet/0.7.3/leaflet.css" /> <script src="//cdn.jsdelivr.net/leaflet/0.7.3/leaflet.js"></script>  <script src="//cdn.jsdelivr.net/leaflet.esri/1.0.3/esri-leaflet.js"></script> <style> body { margin:0; padding:0; } #map { position: absolute; top:0; bottom:0; right:0; left:0; } </style> </head> <body> <style> #panel { position: absolute; top: 10px; right: 10px; z-index: 10; background: white; padding: 10px; } </style> <div id="map"></div> <div id="panel" class="leaflet-bar"> Neighborhoods <select name="relation" id="relationSelect"> <option value="within">Within<options> <option value="contains">Contains<options> <option value="intersects">Intersects<options> <option value="overlaps">Overlaps<options> </select> <select name="geometry" id="geometrySelect"> <option value="bounds">Bounds<options> <option value="point">Point<options> <option value="line">Line<options> <option value="polygon">Polygon<options> </select> </div> <script> var map = L.map("map").setView([45.525231693565054, -122.62836456298828], 11); L.esri.basemapLayer("Topographic").addTo(map); // create our layer neighborhoods = L.esri.featureLayer({ url: "https://services.arcgis.com/rOo16HdIMeOBI4Mb/arcgis/rest/services/Neighborhoods_pdx/FeatureServer/0", style: { color: 'gray', weight: 1 } }).addTo(map); // create a bounds object to query against var bounds = L.latLngBounds([ [45.494555728818014, -122.69153594970703], [45.538098589494005, -122.60845184326172] ]); // create a marker object to query against var marker = L.marker([45.57103404296416, -122.68638610839842 ]).addTo(map); // create a rectangle to visualize the bounds var rect = L.rectangle(bounds, { color: 'blue', weight: 2 }).addTo(map); // create a line to query against var line = L.polyline([ [45.55925642651572, -122.61188507080078], [45.50225636595613, -122.56278991699217], [45.48324350868221, -122.62046813964844] ], { color: 'blue', weight: 2 }).addTo(map); // create a polygon to query against var polygon = L.polygon([ [45.48926092988004, -122.73719787597655], [45.48637264792543, -122.68844604492186], [45.46253867087026, -122.68226623535156], [45.441103561983795, -122.69359588623047], [45.44471679159555, -122.7224349975586], [45.46109386344247, -122.73822784423828], [45.482521374942834, -122.7341079711914 ], [45.48926092988004, -122.73719787597655] ], { color: 'blue', weight: 2 }).addTo(map); // collect geometries into an object so we can reference them later var geometries = { bounds: bounds, line: line, polygon: polygon, point: marker }; // get references to our <select> elements var relationship = document.getElementById('relationSelect'); var geometry = document.getElementById('geometrySelect'); var previousIds = []; // reset all features back to their regularly defined styles function reset(){ for (var i = previousIds.length - 1; i >= 0; i--) { neighborhoods.resetStyle(previousIds[i]); }; } // query the API and highlight features function query(){ reset(); // lookup our input geometry var inputGeometry = geometries[geometry.value]; // query the service executing the selected relation with the selected input geometry neighborhoods.query()[relationship.value](inputGeometry).ids(function(error, ids){ previousIds = ids; for (var i = ids.length - 1; i >= 0; i--) { neighborhoods.setFeatureStyle(ids[i], { color: 'red', weight: 2 }); }; }); } // query when an input changes geometry.addEventListener('change', query); relationship.addEventListener('change', query); // once all neighborhoods have loaded run the default query neighborhoods.once('load', function(){ query(); }); </script> </body> </html></code></pre> <div class="wrap"> <a href="http://github.com/esri/esri-leaflet/edit/master/site/source/pages/examples/spatial-queries.hbs">Edit this sample on GitHub</a> </div> </div> <div style='clear:both;'></div> </div> <div class="container centered-text"> Esri Leaflet is a project from the <a href="http://pdx.esri.com">Esri PDX R&D Center</a> and the <a href="https://github.com/Esri/esri-leaflet/graphs/contributors">Esri Community</a> </div> </div> <script src="../js/script.js"></script> </body> </html>