This sample shows the new ArcGIS Online query parameters "distance" and "unit" in action.
The search geometry is buffered by "distance" units.
We've long been able to search by complex criteria (custom polygons, closest features by road network, etc.) but now you can just provide a point and distance!!
Coming to ArcGIS Server at 10.3.
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> | |
| <!--The viewport meta tag is used to improve the presentation and behavior of the samples | |
| on iOS devices--> | |
| <meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no"> | |
| <title>Select with feature layer</title> | |
| <link rel="stylesheet" href="http://js.arcgis.com/3.9/js/dojo/dijit/themes/tundra/tundra.css"> | |
| <link rel="stylesheet" href="http://js.arcgis.com/3.9/js/esri/css/esri.css"> | |
| <style> | |
| html, body, #mapDiv { | |
| padding: 0; | |
| margin: 0; | |
| height: 100%; | |
| } | |
| #messages{ | |
| background-color: #fff; | |
| box-shadow: 0 0 5px #888; | |
| font-size: 1.1em; | |
| max-width: 15em; | |
| padding: 0.5em; | |
| position: absolute; | |
| right: 20px; | |
| top: 20px; | |
| z-index: 40; | |
| } | |
| #header-div{ | |
| font-family: helvetica, serif; | |
| position: relative; | |
| background: #000000; | |
| color: #ffffff; | |
| width: 100%; | |
| height: 50px; | |
| display:inline-block; | |
| vertical-align:middle; | |
| line-height: 50px; | |
| padding-left: 8px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="header-div">Click on the map to start a query.</div> | |
| <div id="mapDiv"></div> | |
| </body> | |
| <script src="http://js.arcgis.com/3.9/"></script> | |
| <script> | |
| var map; | |
| require([ | |
| "esri/map", "esri/tasks/QueryTask", | |
| "esri/tasks/query", "esri/geometry/Circle", | |
| "esri/graphic", "esri/symbols/SimpleMarkerSymbol", | |
| "esri/symbols/SimpleLineSymbol", "esri/symbols/SimpleFillSymbol", | |
| "esri/config", "esri/Color", "dojo/dom", "dojo/domReady!" | |
| ], function( | |
| Map, QueryTask, | |
| Query, Circle, | |
| Graphic, SimpleMarkerSymbol, | |
| SimpleLineSymbol, SimpleFillSymbol, | |
| esriConfig, Color, dom | |
| ) { | |
| map = new Map("mapDiv", { | |
| basemap: "streets", | |
| center: [-104.9, 39.74], | |
| zoom: 11 | |
| }); | |
| // Create a query task pointing at a subset of RTD Bus Stops | |
| var queryTask = new QueryTask("http://services.arcgis.com/IZtlGBUe4KTzLOl4/ArcGIS/rest/services/BPX_RTD_BusStops3/FeatureServer/0"); | |
| // Symbol used to draw the selected census block points within the buffer polygon | |
| var symbol = new SimpleMarkerSymbol( | |
| SimpleMarkerSymbol.STYLE_CIRCLE, | |
| 12, | |
| new SimpleLineSymbol( | |
| SimpleLineSymbol.STYLE_NULL, | |
| new Color([247, 34, 101, 0.9]), | |
| 1 | |
| ), | |
| new Color([207, 34, 171, 0.5]) | |
| ); | |
| var circleSymb = new SimpleFillSymbol( | |
| SimpleFillSymbol.STYLE_NULL, | |
| new SimpleLineSymbol( | |
| SimpleLineSymbol.STYLE_SHORTDASHDOTDOT, | |
| new Color([105, 105, 105]), | |
| 2 | |
| ), new Color([255, 255, 0, 0.25]) | |
| ); | |
| // When the map is clicked create a buffer around the click point of the specified distance. | |
| map.on("click", function(evt){ | |
| map.graphics.clear(); | |
| var circle = new Circle({ | |
| center: evt.mapPoint, | |
| geodesic: true, | |
| radius: 6, | |
| radiusUnit: "esriMiles" | |
| }); | |
| map.graphics.add(new Graphic(circle, circleSymb)); | |
| var query = new Query(); | |
| query.geometry = evt.mapPoint; | |
| query.distance = 6; | |
| query.units = "miles"; | |
| query.returnGeometry = true; | |
| query.outSpatialReference = map.spatialReference; | |
| query.spatialRelationship = Query.SPATIAL_REL_CONTAINS; | |
| queryTask.execute(query, function(response) { | |
| var features = response.features; | |
| for (var i = 0; i < features.length; i++) { | |
| var feature = features[i]; | |
| feature.setSymbol(symbol); | |
| map.graphics.add(feature); | |
| } | |
| }, function(error) { | |
| console.log("Got an error " + error); | |
| }); | |
| }); | |
| }); | |
| </script> | |
| </html> |