Query a feature layer (spatial)
Learn how to execute a spatial query to access polygon features from a feature service.
A feature layer can contain a large number of features stored in ArcGIS. To access a subset of these features, you can execute an SQL or spatial query, either together or individually. The results can contain the attributes, geometry, or both for each record. SQL and spatial queries are useful when a feature layer is very large and you want to access only a subset of its data.
In this tutorial, you sketch a feature on the map and use ArcGIS REST JS to perform a spatial query against the LA County Parcels hosted feature layer. The layer contains ±2.4 million features. The spatial query returns all of the parcels that intersect the sketched feature. A pop-up is also used to display feature attributes.
Prerequisites
You need an ArcGIS account to access the developer dashboard and create an API key.
Steps
Create a new pen
- To get started, either complete the Display a map tutorial or .
Set the API key
To access location services, you need an API key or OAuth 2.0 access token.
Go to your dashboard to get an API key. The API key must be scoped to access the services used in this tutorial.
In CodePen, update
apiKeyto use your key.Change line 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" /> <title>Esri Leaflet</title> <!-- Load Leaflet from CDN --> <link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css" integrity="sha512-xodZBNTC5n17Xt2atTPuE1HxjVMSvLVW9ocqUKLsCC5CXdbqCmblAshOMAS6/keqq/sMZMZ19scR4PsZChSR7A==" crossorigin=""/> <script src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js" integrity="sha512-XQoYMqMTK8LvdxXYG3nZ448hOEQiglfqkJs1NOQV44cWnUrBc8PkAOcXy20w0vlaXaVUearIOBhiXZ5V3ynxwA==" crossorigin=""></script> <!-- Load Esri Leaflet from CDN --> <script src="https://unpkg.com/esri-leaflet@3.0.0/dist/esri-leaflet.js"></script> <script src="https://unpkg.com/esri-leaflet-vector@3.0.0/dist/esri-leaflet-vector.js"></script> <style> body { margin:0; padding:0; } #map { position: absolute; top:0; bottom:0; right:0; left:0; font-family: Arial, Helvetica, sans-serif; font-size: 14px; color: #323232; } </style> </head> <body> <div id="map"></div> <script> const apiKey = "YOUR_API_KEY"; const basemapEnum = "ArcGIS:Streets"; const map = L.map('map', { minZoom: 2 }).setView([34.02,-118.805], 13); L.esri.Vector.vectorBasemapLayer(basemapEnum, { apiKey: apiKey }).addTo(map); </script> </body> </html>
Add code to perform a spatial query
Import the Leaflet.Editable module from the CDN to sketch geometries on the map.
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
<title>Esri Leaflet</title>
<!-- Load Leaflet from CDN -->
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css"
integrity="sha512-xodZBNTC5n17Xt2atTPuE1HxjVMSvLVW9ocqUKLsCC5CXdbqCmblAshOMAS6/keqq/sMZMZ19scR4PsZChSR7A=="
crossorigin=""/>
<script src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"
integrity="sha512-XQoYMqMTK8LvdxXYG3nZ448hOEQiglfqkJs1NOQV44cWnUrBc8PkAOcXy20w0vlaXaVUearIOBhiXZ5V3ynxwA=="
crossorigin=""></script>
<!-- Load Esri Leaflet from CDN -->
<script src="https://unpkg.com/esri-leaflet@3.0.0/dist/esri-leaflet.js"></script>
<script src="https://unpkg.com/esri-leaflet-vector@3.0.0/dist/esri-leaflet-vector.js"></script>
<script src="https://unpkg.com/leaflet-editable@1.2.0/src/Leaflet.Editable.js"></script>
<style>
body { margin:0; padding:0; }
#map {
position: absolute;
top:0;
bottom:0;
right:0;
left:0;
font-family: Arial, Helvetica, sans-serif;
font-size: 14px;
color: #323232;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
const apiKey = "YOUR_API_KEY";
const basemapEnum = "ArcGIS:Streets";
const map = L.map('map', {
minZoom: 2,
editable: true
}).setView([34.02,-118.805], 13);
L.esri.Vector.vectorBasemapLayer(basemapEnum, {
apiKey: apiKey
}).addTo(map);
// Add the Feature Layer to the map
var parcels = L.esri.featureLayer({
url: 'https://services3.arcgis.com/GVgbJbqm8hXASVYi/arcgis/rest/services/LA_County_Parcels/FeatureServer/0',
simplifyFactor: 0.5,
precision: 4,
where: '1 = 0',
style: function(feature) {
// https://leafletjs.com/reference-1.7.1.html#path-option
return {
opacity: 1.0,
weight: 0.5,
color: 'white',
fillColor: '#19A1E6',
fillOpacity: 0.5
};
}
}).addTo(map);
// Setup the Popup
parcels.bindPopup(function (layer) {
return L.Util.template('<b>Parcel {APN}</b>' +
'Type: {UseType} <br>' +
'Tax Rate City: {TaxRateCity}', layer.feature.properties);
});
// create a generic control to invoke editing
L.EditControl = L.Control.extend({
options: {
position: 'topleft',
callback: null,
kind: '',
html: ''
},
// when the control is added to the map, wire up its DOM dynamically and add a click listener
onAdd: function (map) {
var container = L.DomUtil.create('div', 'leaflet-control leaflet-bar');
var link = L.DomUtil.create('a', '', container);
link.href = '#';
link.title = 'Create a new ' + this.options.kind;
link.innerHTML = this.options.html;
L.DomEvent
.on(link, 'click', L.DomEvent.stop)
.on(link, 'click', function () {
this.options.callback.call(map.editTools);
}, this);
return container;
}
});
// extend the control to draw points
L.NewMarkerControl = L.EditControl.extend({
options: {
position: 'topleft',
callback: map.editTools.startMarker,
kind: 'marker',
html: '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" style="margin: 3px;"><path d="M6 5.619v11.93l6 6.04 6-6.04V5.619C18 2.283 15.313 1 12 1S6 2.283 6 5.619zM12 2c2.28 0 5 .628 5 3.619v11.518l-5 5.032-5-5.032V5.619C7 2.628 9.72 2 12 2zm0 9a3 3 0 1 0-3-3 3 3 0 0 0 3 3zm0-5a2 2 0 1 1-2 2 2.003 2.003 0 0 1 2-2z"/><path fill="none" d="M0 0h24v24H0z"/></svg>'
}
});
// extend the control to draw lines
L.NewLineControl = L.EditControl.extend({
options: {
position: 'topleft',
callback: map.editTools.startPolyline,
kind: 'line',
html: '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" style="margin: 3px;"><path d="M21 6h.046l-5.25 9h-.944L10 9.455V7H7v2.926L1.862 18H0v3h3v-2.926L8.138 10h1.01L14 15.545V18h3v-3h-.046l5.25-9H24V3h-3zM8 8h1v1H8zM2 20H1v-1h1zm14-3h-1v-1h1zm7-13v1h-1V4z"/><path fill="none" d="M0 0h24v24H0z"/></svg>'
}
});
// extend the control to draw polygons
L.NewPolygonControl = L.EditControl.extend({
options: {
position: 'topleft',
callback: map.editTools.startPolygon,
kind: 'polygon',
html: '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" style="margin: 3px;"><path d="M20 3.456L12 9.28V9H9v.433l-5-3.31V4H1v3h1v13H1v3h3v-1h16v1h3v-3h-1V4h1V1h-3zM10 10h1v1h-1zM2 5h1v1H2zm0 17v-1h1v1zm20 0h-1v-1h1zm-1-2h-1v1H4v-1H3V7h.512L9 10.632V12h3v-1.483L20.952 4H21zm1-18v1h-1V2z"/><path fill="none" d="M0 0h24v24H0z"/></svg>'
}
});
// add the two new controls to the map
map.addControl(new L.NewMarkerControl());
map.addControl(new L.NewLineControl());
map.addControl(new L.NewPolygonControl());
var previousLayer;
map.on('editable:drawing:end', function (e) {
// If this is a subsequent query, delete the previous layer
if(previousLayer) {
map.removeLayer(previousLayer);
}
previousLayer = e.layer;
// Turn the shape's edit mode off
e.layer.disableEdit();
// Query the geometry, get back the OBJECTIDs of the matching features,
// and filter the layer based on the resultant OBJECTIDs
var feature = e.layer.toGeoJSON();
parcels.query().intersects(feature.geometry).ids(function(error, queryResult) {
parcels.setWhere('OBJECTID IN (' + queryResult.join(',') + ')');
});
});
</script>
</body>
</html>Edit the Leaflet Map constructor to enable editable to hook the tools into the map.
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
<title>Esri Leaflet</title>
<!-- Load Leaflet from CDN -->
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css"
integrity="sha512-xodZBNTC5n17Xt2atTPuE1HxjVMSvLVW9ocqUKLsCC5CXdbqCmblAshOMAS6/keqq/sMZMZ19scR4PsZChSR7A=="
crossorigin=""/>
<script src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"
integrity="sha512-XQoYMqMTK8LvdxXYG3nZ448hOEQiglfqkJs1NOQV44cWnUrBc8PkAOcXy20w0vlaXaVUearIOBhiXZ5V3ynxwA=="
crossorigin=""></script>
<!-- Load Esri Leaflet from CDN -->
<script src="https://unpkg.com/esri-leaflet@3.0.0/dist/esri-leaflet.js"></script>
<script src="https://unpkg.com/esri-leaflet-vector@3.0.0/dist/esri-leaflet-vector.js"></script>
<script src="https://unpkg.com/leaflet-editable@1.2.0/src/Leaflet.Editable.js"></script>
<style>
body { margin:0; padding:0; }
#map {
position: absolute;
top:0;
bottom:0;
right:0;
left:0;
font-family: Arial, Helvetica, sans-serif;
font-size: 14px;
color: #323232;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
const apiKey = "YOUR_API_KEY";
const basemapEnum = "ArcGIS:Streets";
const map = L.map('map', {
minZoom: 2,
editable: true
}).setView([34.02,-118.805], 13);
L.esri.Vector.vectorBasemapLayer(basemapEnum, {
apiKey: apiKey
}).addTo(map);
// Add the Feature Layer to the map
var parcels = L.esri.featureLayer({
url: 'https://services3.arcgis.com/GVgbJbqm8hXASVYi/arcgis/rest/services/LA_County_Parcels/FeatureServer/0',
simplifyFactor: 0.5,
precision: 4,
where: '1 = 0',
style: function(feature) {
// https://leafletjs.com/reference-1.7.1.html#path-option
return {
opacity: 1.0,
weight: 0.5,
color: 'white',
fillColor: '#19A1E6',
fillOpacity: 0.5
};
}
}).addTo(map);
// Setup the Popup
parcels.bindPopup(function (layer) {
return L.Util.template('<b>Parcel {APN}</b>' +
'Type: {UseType} <br>' +
'Tax Rate City: {TaxRateCity}', layer.feature.properties);
});
// create a generic control to invoke editing
L.EditControl = L.Control.extend({
options: {
position: 'topleft',
callback: null,
kind: '',
html: ''
},
// when the control is added to the map, wire up its DOM dynamically and add a click listener
onAdd: function (map) {
var container = L.DomUtil.create('div', 'leaflet-control leaflet-bar');
var link = L.DomUtil.create('a', '', container);
link.href = '#';
link.title = 'Create a new ' + this.options.kind;
link.innerHTML = this.options.html;
L.DomEvent
.on(link, 'click', L.DomEvent.stop)
.on(link, 'click', function () {
this.options.callback.call(map.editTools);
}, this);
return container;
}
});
// extend the control to draw points
L.NewMarkerControl = L.EditControl.extend({
options: {
position: 'topleft',
callback: map.editTools.startMarker,
kind: 'marker',
html: '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" style="margin: 3px;"><path d="M6 5.619v11.93l6 6.04 6-6.04V5.619C18 2.283 15.313 1 12 1S6 2.283 6 5.619zM12 2c2.28 0 5 .628 5 3.619v11.518l-5 5.032-5-5.032V5.619C7 2.628 9.72 2 12 2zm0 9a3 3 0 1 0-3-3 3 3 0 0 0 3 3zm0-5a2 2 0 1 1-2 2 2.003 2.003 0 0 1 2-2z"/><path fill="none" d="M0 0h24v24H0z"/></svg>'
}
});
// extend the control to draw lines
L.NewLineControl = L.EditControl.extend({
options: {
position: 'topleft',
callback: map.editTools.startPolyline,
kind: 'line',
html: '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" style="margin: 3px;"><path d="M21 6h.046l-5.25 9h-.944L10 9.455V7H7v2.926L1.862 18H0v3h3v-2.926L8.138 10h1.01L14 15.545V18h3v-3h-.046l5.25-9H24V3h-3zM8 8h1v1H8zM2 20H1v-1h1zm14-3h-1v-1h1zm7-13v1h-1V4z"/><path fill="none" d="M0 0h24v24H0z"/></svg>'
}
});
// extend the control to draw polygons
L.NewPolygonControl = L.EditControl.extend({
options: {
position: 'topleft',
callback: map.editTools.startPolygon,
kind: 'polygon',
html: '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" style="margin: 3px;"><path d="M20 3.456L12 9.28V9H9v.433l-5-3.31V4H1v3h1v13H1v3h3v-1h16v1h3v-3h-1V4h1V1h-3zM10 10h1v1h-1zM2 5h1v1H2zm0 17v-1h1v1zm20 0h-1v-1h1zm-1-2h-1v1H4v-1H3V7h.512L9 10.632V12h3v-1.483L20.952 4H21zm1-18v1h-1V2z"/><path fill="none" d="M0 0h24v24H0z"/></svg>'
}
});
// add the two new controls to the map
map.addControl(new L.NewMarkerControl());
map.addControl(new L.NewLineControl());
map.addControl(new L.NewPolygonControl());
var previousLayer;
map.on('editable:drawing:end', function (e) {
// If this is a subsequent query, delete the previous layer
if(previousLayer) {
map.removeLayer(previousLayer);
}
previousLayer = e.layer;
// Turn the shape's edit mode off
e.layer.disableEdit();
// Query the geometry, get back the OBJECTIDs of the matching features,
// and filter the layer based on the resultant OBJECTIDs
var feature = e.layer.toGeoJSON();
parcels.query().intersects(feature.geometry).ids(function(error, queryResult) {
parcels.setWhere('OBJECTID IN (' + queryResult.join(',') + ')');
});
});
</script>
</body>
</html>Add the following code to add the parcels layer, create the draw buttons, and query the service when a geometry is drawn.
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
<title>Esri Leaflet</title>
<!-- Load Leaflet from CDN -->
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css"
integrity="sha512-xodZBNTC5n17Xt2atTPuE1HxjVMSvLVW9ocqUKLsCC5CXdbqCmblAshOMAS6/keqq/sMZMZ19scR4PsZChSR7A=="
crossorigin=""/>
<script src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"
integrity="sha512-XQoYMqMTK8LvdxXYG3nZ448hOEQiglfqkJs1NOQV44cWnUrBc8PkAOcXy20w0vlaXaVUearIOBhiXZ5V3ynxwA=="
crossorigin=""></script>
<!-- Load Esri Leaflet from CDN -->
<script src="https://unpkg.com/esri-leaflet@3.0.0/dist/esri-leaflet.js"></script>
<script src="https://unpkg.com/esri-leaflet-vector@3.0.0/dist/esri-leaflet-vector.js"></script>
<script src="https://unpkg.com/leaflet-editable@1.2.0/src/Leaflet.Editable.js"></script>
<style>
body { margin:0; padding:0; }
#map {
position: absolute;
top:0;
bottom:0;
right:0;
left:0;
font-family: Arial, Helvetica, sans-serif;
font-size: 14px;
color: #323232;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
const apiKey = "YOUR_API_KEY";
const basemapEnum = "ArcGIS:Streets";
const map = L.map('map', {
minZoom: 2,
editable: true
}).setView([34.02,-118.805], 13);
L.esri.Vector.vectorBasemapLayer(basemapEnum, {
apiKey: apiKey
}).addTo(map);
// Add the Feature Layer to the map
var parcels = L.esri.featureLayer({
url: 'https://services3.arcgis.com/GVgbJbqm8hXASVYi/arcgis/rest/services/LA_County_Parcels/FeatureServer/0',
simplifyFactor: 0.5,
precision: 4,
where: '1 = 0',
style: function(feature) {
// https://leafletjs.com/reference-1.7.1.html#path-option
return {
opacity: 1.0,
weight: 0.5,
color: 'white',
fillColor: '#19A1E6',
fillOpacity: 0.5
};
}
}).addTo(map);
// Setup the Popup
parcels.bindPopup(function (layer) {
return L.Util.template('<b>Parcel {APN}</b>' +
'Type: {UseType} <br>' +
'Tax Rate City: {TaxRateCity}', layer.feature.properties);
});
// create a generic control to invoke editing
L.EditControl = L.Control.extend({
options: {
position: 'topleft',
callback: null,
kind: '',
html: ''
},
// when the control is added to the map, wire up its DOM dynamically and add a click listener
onAdd: function (map) {
var container = L.DomUtil.create('div', 'leaflet-control leaflet-bar');
var link = L.DomUtil.create('a', '', container);
link.href = '#';
link.title = 'Create a new ' + this.options.kind;
link.innerHTML = this.options.html;
L.DomEvent
.on(link, 'click', L.DomEvent.stop)
.on(link, 'click', function () {
this.options.callback.call(map.editTools);
}, this);
return container;
}
});
// extend the control to draw points
L.NewMarkerControl = L.EditControl.extend({
options: {
position: 'topleft',
callback: map.editTools.startMarker,
kind: 'marker',
html: '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" style="margin: 3px;"><path d="M6 5.619v11.93l6 6.04 6-6.04V5.619C18 2.283 15.313 1 12 1S6 2.283 6 5.619zM12 2c2.28 0 5 .628 5 3.619v11.518l-5 5.032-5-5.032V5.619C7 2.628 9.72 2 12 2zm0 9a3 3 0 1 0-3-3 3 3 0 0 0 3 3zm0-5a2 2 0 1 1-2 2 2.003 2.003 0 0 1 2-2z"/><path fill="none" d="M0 0h24v24H0z"/></svg>'
}
});
// extend the control to draw lines
L.NewLineControl = L.EditControl.extend({
options: {
position: 'topleft',
callback: map.editTools.startPolyline,
kind: 'line',
html: '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" style="margin: 3px;"><path d="M21 6h.046l-5.25 9h-.944L10 9.455V7H7v2.926L1.862 18H0v3h3v-2.926L8.138 10h1.01L14 15.545V18h3v-3h-.046l5.25-9H24V3h-3zM8 8h1v1H8zM2 20H1v-1h1zm14-3h-1v-1h1zm7-13v1h-1V4z"/><path fill="none" d="M0 0h24v24H0z"/></svg>'
}
});
// extend the control to draw polygons
L.NewPolygonControl = L.EditControl.extend({
options: {
position: 'topleft',
callback: map.editTools.startPolygon,
kind: 'polygon',
html: '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" style="margin: 3px;"><path d="M20 3.456L12 9.28V9H9v.433l-5-3.31V4H1v3h1v13H1v3h3v-1h16v1h3v-3h-1V4h1V1h-3zM10 10h1v1h-1zM2 5h1v1H2zm0 17v-1h1v1zm20 0h-1v-1h1zm-1-2h-1v1H4v-1H3V7h.512L9 10.632V12h3v-1.483L20.952 4H21zm1-18v1h-1V2z"/><path fill="none" d="M0 0h24v24H0z"/></svg>'
}
});
// add the two new controls to the map
map.addControl(new L.NewMarkerControl());
map.addControl(new L.NewLineControl());
map.addControl(new L.NewPolygonControl());
var previousLayer;
map.on('editable:drawing:end', function (e) {
// If this is a subsequent query, delete the previous layer
if(previousLayer) {
map.removeLayer(previousLayer);
}
previousLayer = e.layer;
// Turn the shape's edit mode off
e.layer.disableEdit();
// Query the geometry, get back the OBJECTIDs of the matching features,
// and filter the layer based on the resultant OBJECTIDs
var feature = e.layer.toGeoJSON();
parcels.query().intersects(feature.geometry).ids(function(error, queryResult) {
parcels.setWhere('OBJECTID IN (' + queryResult.join(',') + ')');
});
});
</script>
</body>
</html>Run the app
In CodePen, run your code to display the map.
When you click on the map to draw a polygon, a spatial query will run against the feature layer and display all land parcels that intersect the boundary of the feature. You can click on a parcel to see a pop-up with information about the parcel.
What's next?
Learn how to use additional ArcGIS location services in these tutorials:
Query a feature layer (SQL)
Execute a SQL query to access polygon features from a feature layer.
Query demographic data
Query demographic information for locations around the world with the GeoEnrichment service.
Add a feature layer
Add features from feature layers to a map.
Style a feature layer
Use data-driven styling to apply symbol colors and styles to feature layers.
Estimated time
15 minutes