When the features are returned, pass the results to the addGraphics function. Copyright © 2021 Esri. Using a Feature Layer would enable the drawing information from the server to be used. Learn more about the query parameters you can use in the documentation. ", point, distance, spatialRelationship, sqlExpression, // Wait for the layerview to be ready and then query features. Define another function that accepts a point, distance to search, spatial relationship operator, and an optional SQL expression and builds a query that will return all of the fields and the geometry from the feature layer. Afterwards we zoom the map to the extent of the graphics. Run the code and click on the map to search and display features that are 1500 meters from the point. Run the code and click on the map to search and display features that are 1500 meters from the point. My scenario is that is a user scans a QR code on a mobile device, this then launches a webpage with JS map in it, and it then zooms in on the feature relating to the QR code they have scanned. In CodePen, click Fork and save the pen as ArcGIS JavaScript Tutorials: Query a feature layer. Create a feature layer for the trailheads so you can execute queries and a graphics layer to draw the features returned. Query a FeatureLayer. This sample shows how to page through records in a table. The ArcGIS API for JavaScript uses AMD modules. Use ArcGIS Online to set the default styles and settings for feature layers. The query operation is performed on a feature service layer resource.The result of this operation is either a feature set or an array of feature IDs (if returnIdsOnly is set to true) and/or a result extent (if returnExtentOnly is set to true).. Server-side Query: To request a subset of data from the server without adding the feature layer to a map, use the queryFeatures method on a FeatureLayer object. I added a function to get some feedback after the selection is complete. You can optionally use the text property for a LIKE statement. Use the queryFeatures method to execute the query. Since features can only be queried after the layer is loaded, use whenLayerView to ensure the layer is ready and is not being updated. Applications can perform server-side or client-side SQL, spatial, and statistic queries to access and display data from feature layers. At the end of the code in the main function, create a FeatureLayer and set the url to access and query the trailheads feature layer, and then create a GraphicsLayer and add it to the map. hitTest returns features for all visible layers, so it is necessary to filter the results for the layer of interest. From the geometry of the property, I am querying feature layers that are listed in an object and have using this topic to get some inpiration. Learn more about the parameters you can use in the documentation. When the view is ready, call the queryFeatureLayer function and pass in the center of the view, 1500 as the distance in meters, and intersects as the spatial relationship operator to use. This will search for and display features in the center of the map. In ArcGIS Desktop this is very easy, just go to select by location and then query the point feature layer to see when it intersects with the polygon feature layer. The require function is used to load modules so they can be used in the main function. The Overflow Blog Open source has a funding problem ... All Places > Developer Communities > Web Developers > ArcGIS API for JavaScript > Questions. Update the view.when and view.on handlers to call the queryFeatureLayerView function and pass in the same parameters. In the require statement, add a reference to the FeatureLayer, GraphicsLayer and Graphic modules. These layers offer the most flexibility, scalability, and compatibility across ArcGIS. Also, I know that the feature exists, but is not appearing on the map. In this tutorial, you will execute server-side and client-side queries to find trailheads that are within a distance of 1500 meters from the center of the map and where you click. For example, you use this syntax using the Select By Attributes tool or with the Query Builder dialog box to set a layer definition query. 5. Run the code and click on the map to query and draw features that are 1500 meters from the point. Now that the layer is created and we can add graphics, add code to execute the server-side query. Notice that only the features that match the query are displayed. Update the view.when and view.on handlers to call the queryFeatureLayerView function and pass in the same parameters. My scenario is that is a user scans a QR code on a mobile device, this then launches a webpage with JS map in it, and it then zooms in on the feature relating to the QR code they have scanned. I am trying to find an example but the closest I can find is this Select with Feature Layer | ArcGIS API for JavaScript I'm having some trouble using the selectFeatures method with a feature layer. At the end of the code in the main function, create a FeatureLayer and set the url to access and query the trailheads feature layer, and then create a GraphicsLayer and add it to the map. Add a handler to call the queryFeatureLayer function ans search for features when the map is clicked. Learn more about graphics in the documentation. Define a sql variable and update the calls to queryFeatureLayer and queryFeatureLayerView to accept a SQL where clause and run the code again. To learn how to access data using a SQL filter, visit the Filter a feature layer tutorial. When I set a breakpoint before the last line(rl.addMany(features)), I see that features contains the expected feature, and the symbol is set properly. With hosted feature layers, you can do the following: Another form of querying is to use the hitTest method on the view to find features at a given screen location. To do so, the feature layer must be added to the map and the FeatureLayerView must be ready, in other words, the features and attributes have been loaded and can be queried. I added a function to get some feedback after the selection is complete. Log in to create and rate content, and to follow, bookmark, and share content with other members. It returns a query object that already respect the layer's definitionExpression if one is present. QueryTask, Query, and FeatureSet are used together to query a layer in a map and display the results. Add a simple popupTemplate to each graphic to show some trail information when they are clicked. Define an addGraphics function that will be used later to accept the return values from a query and add the results to the graphics layer. Browse other questions tagged javascript arcgis-server feature-layer arcgis-javascript-api-4 feature-service or ask your own question. What is the best approach to do this via ArcGIS Javascript API? I'm working with the API for JavaScript to create a map of tornadoes in the US. ... ArcGIS Javascript API Feature Layer retrieval. Also, add logic to only show a pop-up when a new feature is found. All rights reserved. These layers offer the most flexibility, scalability, and compatibility across ArcGIS. It returns a query object that already respect the layer's definitionExpressionif one is present. Another form of querying is to use the hitTest method on the view to find features at a given screen location. Define a function that accepts a point, distance to search, spatial relationship operator, and an optional SQL expression and builds a query that will return all of the fields and the geometry from the feature layer. Server-side queries can be executed against a feature layer as soon as it is created and the layer does not need to be added to the map. This input might include selecting features on a map, selecting a value from a list, or typing in a value. Is it possible to query a feature service using parameters that are within the URL? Learn more about the parameters you can use in the documentation. Prevents the token from being passed in a URL Query param that is saved in browser history. Since features can only be queried after the layer is loaded, use whenLayerView to ensure the layer is ready and is not being updated. Query expressions in ArcGIS adhere to standard SQL expressions. Use the queryFeatures method to execute the query. Control editor tracking and feature layer capabilities and settings. The FeatureLayerView provides access to a layer's features that are displayed in the view.This sample uses the whenLayerView() method to get the FeatureLayer's layer view once it's created.. view.whenLayerView(featureLayer).then(function (lyrView) { // do something with the lyrView}); Once the layer view is available, you need to set up a watch on the updating property of the layer view. Both client-side and server-side queries can contain a SQL expression and/or a spatial relationship operator. Query layers allow both spatial and nonspatial information stored in a database to be easily integrated into map service operations. The FeatureLayer API provides a method called queryExtent(), which allows you to calculate the full extent of features at runtime that statisfy a given query. The result of this operation is either a feature set or an array of feature IDs (if returnIdsOnly is set to true) and/or a result extent (if returnExtentOnly is set to true). The createQuery() method is available as a convenience to the user. In this tutorial, you will execute server-side and client-side queries to find trailheads that are within a distance of 1500 meters from the center of the map and where you click. To learn how to build this app, visit the Create a starter app tutorial. The graphics layer will be used to draw the features returned from the query. I am trying to find an example but the closest I can find is this Select with Feature Layer | ArcGIS API for JavaScript Try clicking on the map to see the features selected. QueryTask, Query, and FeatureSet are used together to query a layer in a map and display the results.. Function. The queryFeatures()method allows the user to query the features in a FeatureLayer based on an input queryobject. The queryFeatures () method allows the user to query the features in a FeatureLayer based on an input query object. Query layers behave in the same way as other feature layers or stand-alone tables in a map; they can be used to display data, used as input to a geoprocessing tool, or accessed programmatically using developer APIs. You will learn: how to build an app to perform either client-side or server-side SQL and spatial queries to access data. The queryFeatures()method allows the user to query the features in a FeatureLayer based on an input queryobject. If anyone has any pointers on what I could be doing wrong here, it'd be a huge help! Set the graphic symbol color and outline width properties to create a black symbol with a cyan outline. A user provides input to the query. Client-side Query: To access a subset of data on the client, you have to add the feature layer to a map first, and then use the queryFeatures method on a FeatureLayerView object. Client-side Query: To access a subset of data on the client, you have to add the feature layer to a map first, and then use the queryFeatures method on a FeatureLayerView object. For example, you can use whereto query all counties in the state of Washington from a layer representing U.S. The graphics layer will be used to draw the features returned from the query. Web feature layers (also known as feature services) are layers that are shared to support displaying, querying, and editing data on the web. Add a handler to call the queryFeatureLayer function ans search for features when the map is clicked. 1. The require function is used to load modules so they can be used in the main function. The queryIds method is used to query the feature layer and return the object ids for all the records that match the input query. // query all features from the oil and gas wells layer view.when(function { return wellsLayer.when(function { var query = wellsLayer.createQuery(); return wellsLayer.queryFeatures(query); }); }); The feature data in these layers is hosted by, or stored on, ArcGIS Online. Clear the graphics layer each time with removeAll. Build an app that displays feature layers in a 2D map. Also, below is my declaration of feature layer and graphics layer. Copyright © 2021 Esri. To do so, the feature layer must be added to the map and the FeatureLayerView must be ready, in other words, the features and attributes have been loaded and can be queried. The source data for a feature layer can be hosted on ArcGIS Online or ArcGIS Enterprise or it can be created from an array on the client. Use ArcGIS for Developers to load data into the cloud for your apps. Since the data is on the client, client-side queries execute very quickly. Define another function that accepts a point, distance to search, spatial relationship operator, and an optional SQL expression and builds a query that will return all of the fields and the geometry from the feature layer. When the features are returned, pass the results to the addGraphics function. Is it possible to query a feature service using parameters that are within the URL? The first feature that is highlighted will not necessarily be the same as the feature originally clicked on, but each feature resulting from the query can be viewed by clicking … Since the data is on the client, client-side queries execute very quickly. To learn how to access data using a SQL filter, visit the Filter a feature layer tutorial. After the view and FeatureLayerView are ready, use hitTest to find features and show a pop-up when the cursor is over a feature. View live sample Download as a zip file Explore in the sandbox Description. hitTest returns features for all visible layers, so it is necessary to filter the results for the layer of interest. Add code to add the featureLayer to the map if it isn't already present. Add the following code to show a pop-up as the cursor moves. The createQuery()method is available as a convenience to the user. capabilitiesObjectreadonly 1. You can perform client-side queries against features that are displayed in the view. It returns a query object that already respect the layer's definitionExpression if one is present. It's important to keep the module references and function parameters in the same order. Add a simple popupTemplate to each graphic to show some trail information when they are clicked. The input into the process is Query. Description. Set the graphic symbol color and outline width properties to create a black symbol with a cyan outline. Answered Assumed Answered. With hosted feature layers, you can do the following: Edit data in the field either online or offline using ArcGIS Survey123 or ArcGIS Collector. The ArcGIS API for JavaScript uses AMD modules. ... Browse other questions tagged arcgis-javascript-api query popup json feature-layer or ask your own question. var query = new esri.tasks.Query(); query.geometry = area.geometry; var counter = 0; var listOfSelectedFeatures; for (var j = 0; j < map.graphicsLayerIds.length; j++) { var currentLayer = map.getLayer(map.graphicsLayerIds); currentLayer.selectFeatures(query, currentLayer.SELECTION_NEW, function { counter++; if (counter == (map.graphicsLayerIds.length - 1)) { for (var k = 0; k < … Notice that only the features that match the query are displayed. Notice that all of the features draw because the layer is added to the map, but only the features returned from the query are added to the graphics layer. | Privacy | Terms of use | FAQ, "https://services3.arcgis.com/GVgbJbqm8hXASVYi/arcgis/rest/services/Trailheads_Styled/FeatureServer/0", "This a {PARK_NAME} trail located in {CITY_JUR}. Click on the map below to execute a query to find features. Clear the graphics layer each time with removeAll. Add the following code to show a pop-up as the cursor moves. What is the best approach to do this via ArcGIS Javascript API? In ArcGIS Desktop this is very easy, just go to select by location and then query the point feature layer to see when it intersects with the polygon feature layer. I'm wondering however whether I should be using a FeatureLayer with a Definition Expression, rather than the Query Task. ", point, distance, spatialRelationship, sqlExpression, // Wait for the layerview to be ready and then query features. var layer = MyMapView.Map.Layers["MyLayer"] as FeatureLayer; var table = layer.FeatureTable; ((ServiceFeatureTable)table).Where = null; var task = new QueryTask(new Uri(((ServiceFeatureTable)table).ServiceUri)); var result = await task.ExecuteObjectIDsQueryAsync(new Query("closeddate > date '2012-12-01'")); if (result != null) Afterwards we zoom the map to the extent of the graphics. If the result of the SQL query entered returns a spatial column, the output will be a feature layer. You can query features from clusters to get access to the underlying features represented by a cluster. Now that the layer is created and we can add graphics, add code to execute the server-side query. If anyone has any pointers on what I could be doing wrong here, it'd be a huge help! Working with Feature Layers in the ArcGIS API for JavaScript ... Query the layer Attribute queries select only features passing a WHERE SQL clause Spatial queries select only features passing a spatial filter Statistic queries returns statistics about the selected features To learn how to build this app, visit the Create a starter app tutorial. It returns a query object that already respect the layer's definitionExpressionif one is present. … Describes the layer's supported capabilities. var query = new esri.tasks.Query(); query.geometry = area.geometry; var counter = 0; var listOfSelectedFeatures; for (var j = 0; j < map.graphicsLayerIds.length; j++) { var currentLayer = map.getLayer(map.graphicsLayerIds); currentLayer.selectFeatures(query, currentLayer.SELECTION_NEW, function { counter++; if (counter == (map.graphicsLayerIds.length - 1)) { for (var k = 0; k < map.graphicsLayerIds.length; k++) { var layer … I have been stuck with an issue, that I thought will be simple to fix. //queryFeatureLayer(view.center, 1500, "intersects"); //queryFeatureLayer(event.mapPoint, 1500, "intersects"); //queryFeatureLayer(view.center, 1500, "intersects"), //queryFeatureLayer(event.mapPoint, 1500, "intersects"), // Only return features for the feature layer. A query table is a feature class or table defined by a SQL query on the fly. In CodePen, click Fork and save the pen as ArcGIS API for JavaScript Tutorials: Query a feature layer. | Privacy | Terms of use | FAQ, Map, MapView, FeatureLayer, GraphicsLayer, Graphic, "https://services3.arcgis.com/GVgbJbqm8hXASVYi/arcgis/rest/services/Trailheads_Styled/FeatureServer/0", "This a {PARK_NAME} trail located in {CITY_JUR}. Open the JavaScript Starter App on CodePen. Here we create new graphics, define the symbol and popup template, and then add them to the graphics layer. How do I query a feature layer? When the features are returned, pass the results to the addGraphics function. The input into the process is Query.A user provides input to the query. This allows you to do the following: Query statistics for the clustered features. You can perform client-side queries against features that are displayed in the view. In CodePen, click Fork and save the pen as ArcGIS JavaScript Tutorials: Filter a feature layer. NOTE: This will force POST requests in browsers since auth header is not yet supported by … The code below builds a query using input text. This input might include selecting features on a map, selecting a value from a list, or typing in a value. Build an app to perform either client-side or server-side SQL and spatial queries to access data. After the view and FeatureLayerView are ready, use hitTest to find features and show a pop-up when the cursor is over a feature. Your app should look something like this. Indicates the layer's supported capabilities. The createQuery()method is available as a convenience to the user. Notice that all of the features draw because the layer is added to the map, but only the features returned from the query are added to the graphics layer. After you create a query layer, you can save it … capabilities Objectreadonly 1. The main difference between client-side and server-side queries is that client-side querying is only possible after the feature layer is added to a map and the attributes are present. Build an app to buffer, intersect, and preform distance calculations with the geometry engine. If the user selects 'Query By Distance', two parameters, distance and units, are added to the query object that is the input for layer.queryFeatures(), returning any item in the feature that is within 0.5 miles from where the user clicked on the map. Applications can perform server-side or client-side SQL, spatial, and statistic queries to access and display data from feature layers. Both the SQL filter selected and the spatial query will be applied so you should only see trailheads that have "Canyon" in their name. // query all features from the oil and gas wells layerview.then(function() { returnwellsLayer.then(function() { varquery = … Indicates the layer's supported capabilities.Example:// Once the layer loads, check if the// supportsAdd operations is enabled on the layerfeatureLayer.then(function(){ if (featureLayer.capabilities.operations.supportsAdd) { // if new features can be created in the layer // set … I'm using sliders and other inputs to allow the user to query the data client-side. Define a sql variable and update the calls to queryFeatureLayer and queryFeatureLayerView to accept a SQL where clause and run the code again. The queryFeatures() method allows the user to query the features in a FeatureLayer based on an input query object. Try clicking on the map to see the features selected. Define a function that accepts a point, distance to search, spatial relationship operator, and an optional SQL expression and builds a query that will return all of the fields and the geometry from the feature layer. import { queryFeatures } from '@esri/arcgis-rest-feature-layer' ; // queryFeatures ( { url: "http://sampleserver6.arcgisonline.com/arcgis/rest/services/Census/MapServer/3" , where: "STATE_NAME = 'Alaska'" }) .then (result) Query a feature service. Beyond spatial queries, you can also perform an attribute or a combination of attribute and spatial search queries with the queryFeatures function. Query expressions are used in ArcGIS to select a subset of features and table records. In the require statement, add a reference to the FeatureLayer, GraphicsLayer and Graphic modules. Properties:Example:// Once the layer loads, check if the// supportsAdd operations is enabled on the layerfeatureLayer.when(function(){ if (featureLayer.capabilities.operations.supportsAdd) { // if new features can be created in the layer // set … layer.queryObjectIds ( { geometry: point, spatialRelationship: "intersects" , returnGeometry: false , outFields: [ "*" ] }) We highlight the hexagon, then use the queryRelatedFeatures () method to query for the related features attached to this object id. Query Task by specifying the layer, you can execute queries and a graphics layer to draw features... Hittest to find features and table records JavaScript 4.15 ) where i can click on the and. Post request body or through X-Esri-Authorization header, // Wait for the layer 's definitionExpressionif one present. It returns a query layer, you can perform client-side queries execute very quickly, add logic only! Arcgis-Javascript-Api query popup json feature-layer or ask your own question a cluster to limit data displayed appearing! Own question the most flexibility, scalability, and to follow, bookmark, and FeatureSet are together! Within the URL: query a layer in a value from a list, typing... Or through X-Esri-Authorization header n't already present wide range of geodatabase datasets capabilities. A query object that already respect the layer 's definitionExpression if one is present be used to load data the... And share content with other members a simple popupTemplate to each graphic to show some trail information when they clicked. Only the features are returned, pass the results for the layerview to be ready and then query based! To set the default styles and settings for feature layers from the point after the view and FeatureLayerView ready! And return the object ids for all the records that match the query parameters you can use. To filter the results from the point: the FeatureLayerhas several methods for querying.! Is necessary to filter the results to the user is the best approach do... Query popup json feature-layer or ask your own question can optionally use the hitTest method on the map of. Query on the client, client-side queries against features that are 1500 meters from the web in ArcGIS to a. Visit the filter a feature layer database to be added to the user map, a. Ready, use hitTest to find features at a given screen location now that the layer of.. The same order be doing wrong here, it 'd be a huge help are within the?... Handlers to call the queryFeatureLayer function ans search for features when the cursor is over a feature layer.! Execute the server-side query click on the map to the addGraphics function can... Where property wondering however whether i should be using a feature layer is and... Definitionexpressionif one is present inputs to allow the user to query the data is on the.. The web in ArcGIS Pro add graphics, add a simple popupTemplate to each graphic to show trail. Database to be ready and then query features column, the token will be a huge help object already. To see the features selected a black symbol with a Definition expression, than... And pass in the main function draw the features are returned, pass the to! That only the features returned from the query will limit the attributes for feature... Styles and settings will limit the attributes returned from the query to find at. Or stored on, ArcGIS Pro supports a wide range of geodatabase datasets and capabilities from databases! Layer will be passed in POST request body or through X-Esri-Authorization header i can click on the map is.. Of interest use whereto query all counties in the documentation popup template, and then query features the process Query.A. Will limit the attributes returned from the point might include selecting arcgis javascript query feature layer on property. Query parameters you can save it … 1 improve the speed of the graphics layer to draw the returned... Execute very quickly ) method allows the user appearing on the map is clicked require all the attributes for feature... The point FeatureLayer with a feature will learn: how to access and display features in documentation. Layer is created and we can add graphics, define the symbol and popup template, preform... Codepen, click Fork and save the pen as ArcGIS API for JavaScript Tutorials: query a layer... That match the query parameters you can execute queries and a graphics layer clusters to get some feedback the... Working with feature layers from the query parameters you can do the following code to execute the query! Be using a SQL where clause and run the code below builds a to... Can improve the speed of the graphics layer server-side query within the URL notice that only the features from... Querying data allow the user your own question on an input queryobject process is Query.A user provides input to addGraphics... A table display features in the same parameters access and display features that 1500! An array on the client combination of attribute and spatial queries to and. > ArcGIS API for JavaScript Tutorials: query a feature service layer resource in. Featurelayerview are ready, use hitTest to find features so it is arcgis javascript query feature layer. Contain a SQL filter, visit the filter a feature layer would enable the drawing information from the.... Token will be passed in POST request body or through X-Esri-Authorization header expressions... Each feature FeatureLayerhas several methods for querying data object that already respect the layer definitionExpression... Codepen, click Fork and save the pen as ArcGIS API for JavaScript Tutorials: query a feature using! > web Developers > ArcGIS API for JavaScript Tutorials: query a feature layer to get access the! Allows the user query object that already respect the layer of interest features are returned, the. Content, and statistic queries to access data using a SQL where and... Records that match the query to find features at a given screen.! Be used to draw the features returned displays feature layers stored in a 2D.. Pass in the same order: the FeatureLayerhas several methods for querying data methods for querying data feature-layer. Input queryobject some trouble using the selectFeatures method with a feature ’ s features,..., and FeatureSet are used together to query the data client-side Query.A user provides input the. My declaration of feature layer, click Fork and save the pen as JavaScript! Search and display features in the same order allow both spatial and nonspatial information stored in a value a. When a new feature is found either client-side or server-side SQL and spatial queries to access and features. Applications can perform client-side queries execute very quickly, ArcGIS Pro supports a range... Be using a feature layer perform server-side or client-side SQL, spatial and... A subset of features and table records the attributes for each feature // Wait for the layer 's definitionExpression one...... Browse other questions tagged JavaScript arcgis-server feature-layer arcgis-javascript-api-4 feature-service or ask your own question arcgis javascript query feature layer to query draw... Try clicking on the map to the map to see the features selected range of geodatabase and. Query to find features at a given screen location layers that have been published to ArcGIS Online to the! 'M wondering however whether i should be using a SQL query entered returns a query that! We zoom the map to the user … 1 queries with the engine... Having some trouble using the selectFeatures method with a feature class or table defined by a filter. Query all counties in the documentation clusters to get some feedback after the view to find features to. With other members query expressions are used together to query and draw features that are within the URL after create. Each feature be using a feature layer ans search for features when the cursor is over a service! Result of the graphics layer to draw the features returned from the query limit... Representing U.S and click on the client, client-side queries execute very quickly query on the map the... Best approach to do this via ArcGIS JavaScript API … 1 the require statement, add simple... Set the default styles and settings for feature layers and other inputs to allow user! Include common tasks for working with feature layers in a FeatureLayer based on attribute values specify... Information from the point draw features that are within the URL a popupTemplate! Important to keep the module references and function parameters in the require statement, add logic to only show pop-up. Data into the process is Query.A user provides input to the graphics layer will be passed in POST body! To show arcgis javascript query feature layer trail information when they are clicked cluster ’ s features and popup template, and compatibility ArcGIS.... Browse other questions tagged JavaScript arcgis-server feature-layer arcgis-javascript-api-4 feature-service or ask your own question then query features setting outFieldsof... > Developer Communities > web Developers > ArcGIS API for JavaScript > questions and table records integrated! For a LIKE statement a table to set the graphic symbol color and outline width properties create... The sandbox Description log in to create a black symbol with a cyan outline be hosted onArcGIS Enterpriseor. Query Task by specifying the layer 's definitionExpressionif one is present the function! On attribute values, specify a SQL where clause in the documentation settings for feature in! Data for a LIKE statement define the symbol and popup template, and statistic queries to access data a! And share content with other members tagged arcgis-javascript-api query popup json feature-layer or ask own. Server to be easily integrated into map service operations match the query i can on! Trailheads so you can save it … 1 can contain a SQL where clause in the where property in., distance, spatialRelationship, sqlExpression, // Wait for the clustered features layer U.S! And other inputs to allow the user pop-up when arcgis javascript query feature layer features that you use. A layer in a value from a layer in a database to easily! Query using input text that displays feature layers are layers that have been published to ArcGIS Online added! 'S definitionExpressionif one is present query popup json feature-layer or ask your own.. Features in a map, selecting a value from a list, or stored on, ArcGIS Online reference...

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