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How to render feature layer from Feature collection with feature set

ganeshsrinivasan

Hi,

How to create feature collection object using multiple Featureset (queried from multiple arcgis rest service URL) to render to map (smart map) as feature layer

Need help in layerdefinition to accomplish the same

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ganeshsrinivasan

Robert Scheitlin,

Yes, we need to achieve the concept which you mentioned

we need to use overlay layers to achieve ?its same set of geometry data of polygon(feature set) to be shown in the map( can it be overlapped?)

else how to achieve this?

thanks

ganesh

RobertScheitlin__GISP

Ganesh,

So you want the geometries and attributes from two different layer queries to be combined into on FeatureLayer? Will the geometries overlap?

ganeshsrinivasan

Hi Robert Scheitlin,
 
Thanks for the reply,
objective: Render multiple query task results (Rest API URL output) to the map as a smart map
 
We had progress with the help of following code which does
1. Create Two Feature set using Tow different Query Task (Map server)
2.Binding two feature set to Feature collection-We are able to find the expected number of results in feature collection with graphics
3.Create feature layer using feature collection along with info template and also able to add feature layer to the map
Issues
1.As a result we able to visualize only the first querytask output on the map, we confirmed this by viewing the pop up. doesn't contain the variables from the second querytask
2.layer rendering to map along with color,extent
Help on
1. Approach
2. why feature layer does't contain both feature set detail(verified number of graphics in feature layer)?
3.provide with any code snippets for the same
 
 Our Code Snippet

var queryTask = new QueryTask("https://xyz.arcgis.com/arcgis/rest/services/xyz/MapServer/xyz/query?token="+accessTokenForSmartMap);

var query = new Query();

query.where = "1 > 0";

query.outSpatialReference = {wkid:3857};

query.returnGeometry = true;

query.outFields = ["RTSALESTOT","OBJECTID"];

promiseCallReturnForRetail = queryTask.execute(query);

var queryTask1 = new QueryTask("https://xyz.arcgis.com/arcgis/rest/servicesxxxxxxxx/MapServer/xyz/query?token="+accessTokenForSmartMap);

var query1 = new Query();

query1.where = "1 > 0";

query1.outSpatialReference = {wkid:3857};

query1.returnGeometry = true;

query1.outFields = ["TOTPOP_CY","OBJECTID"];

promiseCallReturnForPopulation = queryTask1.execute(query1);

promises = all([promiseCallReturnForPopulation,promiseCallReturnForRetail]);

promises.then(outputOfTwoLayers);

function outputOfTwoLayers(results){

var allFeatureSet = [];

arrayUtils.forEach(results,function(value,key){

arrayUtils.forEach(results[key].features,function(value,key){

allFeatureSet.push(value);

});

var featureCollection = {

"layerDefinition": null,

"featureSet": {

"features" : allFeatureSet,

"geometryType": "esriGeometryPolygon"

}

};

featureCollection.layerDefinition = {

"geometryType": "esriGeometryPolygon",

"objectIdField": "OBJECTID",

"fields": [{

"name": "OBJECTID",

"alias": "OBJECTID",

"type": "esriFieldTypeOID"

{

"name": "TOTPOP_CY",

"alias": "2016 Total Population (Esri)",

"type": "esriFieldTypeInteger"

{

"name": "RTSALESTOT",

"alias": "2016 Total Retail Sales (including Food/Drink Sales)",

"type": "esriFieldTypeDouble"

{

"name": "title",

"alias": "Title",

"type": "esriFieldTypeString"

}]

};

console.log(featureCollection);

var featureLayer3 = new FeatureLayer(featureCollection,{

showAttribution : true,

mode : FeatureLayer.SELECTION_ADD,

id : "smartMap",

"infoTemplate": {

title:"Smart Map Data",

content: "TOTPOP_CY : ${TOTPOP_CY} RTSALESTOT : ${RTSALESTOT} "}

});

console.log(featureLayer3);

console.log(mapObj);

var symbol = new esri.symbol.SimpleFillSymbol(esri.symbol.SimpleFillSymbol.STYLE_SOLID, new esri.symbol.SimpleLineSymbol(esri.symbol.SimpleLineSymbol.STYLE_SOLID, new dojo.Color([255,255,255,1.0]), 1),new dojo.Color([125,125,125,0.35]));

featureLayer3.setRenderer(new esri.renderer.SimpleRenderer(symbol));

mapObj.addLayer(featureLayer3);

};

RobertScheitlin__GISP

Ganesh,

What have you tried? Have you looked at the FeatureCollection sample?

Feature collection | ArcGIS API for JavaScript 3.18

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