topic Re: query from Geometry in ArcGIS JavaScript Maps SDK Questions

query from Geometry

jaykapalczynski — Sat, 11 Dec 2021 15:34:10 GMT

I am quering a FC for a specific field value
Returning the Feature and displaying it in a Graphic.
This works fine.
I am then attempting to do the same by calling another function to
Use the Geometry of the Graphic to select all the COunty Features that Intersect it...
THis part if failing and I cant see why.

Both FC are Web Mercator Aux Sphere

The Map is defined as follows ---- I think this defaults to Web Mercator Web Aux?

        var mapright = new Map({
            basemap: "dark-gray",
            layers: [resultsLayer3, resultsLayer2, countyLayerWebMercator]
        });
        var viewright = new MapView({
            container: "viewDivright",
            map: mapright,
            center: [-77.05, 37.53308],
            zoom: 7
        });‍‍‍‍‍‍‍‍‍‍

PART ONE query, get geometry create Graphic

        function queryMultipartPolyongUniqueID3(feature) {
            var str = feature;
            var query = "";
            query = MultiPartPolygonsLayer.createQuery();
            query.where = "ADDRESSgeo  = '" + str + "'";
            return MultiPartPolygonsLayer.queryFeatures(query);
        }

// DISPLAY RESULTS IN GRAPHICS LAYER
        function displayResultsUniqueID(results) {

            resultsLayer2.removeAll();
            var features2 = results.features.map(function (graphic) {
                graphic.symbol = {
                    type: "simple-fill",
                    style: "solid",
                    color: [240, 248, 255, 0.9],
                    size: "10px", // pixels
                    outline: {
                        // autocasts as new SimpleLineSymbol()
                        color: [240, 248, 255, 0.9],
                        width: 1 // points
                    }
                };
                return graphic;
            });

            var numCounties2 = features2.length;
            resultsLayer2.addMany(features2);

            // CALL THE SECOND FUNCTION
            queryCountiesthatIntersect().then(displayResults2);
        }‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

THEN Call the second function at the end ----

// CALL THE SECOND FUNCTION
queryCountiesthatIntersect().then(displayResults2);

1. If I comment out the call to this 2nd function that code runs without error.

2. If I run it with the call to the second function I get the below error.

ERROR

dojo.js:218 [esri.core.Accessor] Accessor#set Invalid property value, value needs to be one of 'esri.geometry.Extent', 'esri.geometry.Multipoint', 'esri.geometry.Point', 'esri.geometry.Polyline', 'esri.geometry.Polygon', or a plain object that can autocast (having .type = 'extent', 'multipoint', 'point', 'polyline', 'polygon')

QUESTIONS:

Am I getting this error because I am trying to use a Graphic Layer from the First Function Above?????

Can I use graphic Layer? If so do I need to define it differently?

Do I need to use a Feature Layer?

        function queryCountiesthatIntersect() {
            var query = countyLayerWebMercator.createQuery();
            query.geometry = resultsLayer2;
            query.spatialRelationship = "intersects";

            return countyLayerWebMercator.queryFeatures(query);
        }
        function displayResults2(results) {
            resultsLayer3.removeAll();
            var features3 = results.features.map(function (graphic) {
                graphic.symbol = {
                    type: "simple-fill",
                    style: "solid",
                    color: [240, 248, 255, 0.9],
                    size: "10px", // pixels
                    outline: {
                        // autocasts as new SimpleLineSymbol()
                        color: [191, 42, 18, 0.9],
                        width: 1 // points
                    }
                };
                return graphic;
            });
            var numCounties = features3.length;
            resultsLayer3.addMany(features3);
        }‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Re: query from Geometry

jaykapalczynski — Mon, 13 Apr 2020 17:35:51 GMT

Funny thing is I get this error but the 2nd function still displays data but for some reason ALL of the County data....not the ones that are intersecting the Graphic Layer. So I am assuming I might have to define the Geometry of the Graphic Layer?

Re: query from Geometry

RobertScheitlin__GISP — Mon, 13 Apr 2020 17:39:18 GMT

Jay,

The queries geometry property has to be a single geometry. You are currently attempting to pass a GraphicsLayer with possibly multiple graphics.

Re: query from Geometry

jaykapalczynski — Mon, 13 Apr 2020 17:52:32 GMT

query.geometry = resultsLayer2.geometry[0]; ????

Re: query from Geometry

RobertScheitlin__GISP — Mon, 13 Apr 2020 17:56:32 GMT

query.geometry = resultsLayer2.graphics[0].geometry;

Re: query from Geometry

jaykapalczynski — Sat, 11 Dec 2021 15:34:13 GMT

Tried this and don't get to the second alert

function queryCountiesthatIntersect() {
   alert("1");
   var query = countyLayerWebMercator.createQuery();
   query.geometry = resultsLayer2.graphics[0].geometry;
   query.spatialRelationship = "intersects";
   alert("2");
   return countyLayerWebMercator.queryFeatures(query);
}

‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Re: query from Geometry

jaykapalczynski — Mon, 13 Apr 2020 18:19:35 GMT

I changed the Graphic build to this as well

resultsLayer2.add(features2);

NOT

resultsLayer2.addMany(features2);

Re: query from Geometry

RobertScheitlin__GISP — Mon, 13 Apr 2020 18:40:22 GMT

Jay,

addmany would look like this. it is expecting an array.

resultsLayer2.addMany([features2]);

Re: query from Geometry

jaykapalczynski — Mon, 13 Apr 2020 19:00:09 GMT

This works fine and I get the 1st function to render the graphic layer properly

resultsLayer2.addMany(features2);

This does NOT work...the graphic layer in the first function does not draw.

resultsLayer2.addMany([features2]);

Still think there is an issue with this...when trying to use the geometry to find the counties that intersect the Graphic Layer

written like this I get nothing

query.geometry = resultsLayer2.graphics[0].geometry;

written like this I get all 133 counties

query.geometry = resultsLayer2;

Re: query from Geometry

jaykapalczynski — Mon, 13 Apr 2020 19:04:12 GMT

I was using this ESRI Example: ArcGIS API for JavaScript Sandbox

towards the bottom

Re: query from Geometry

RobertScheitlin__GISP — Mon, 13 Apr 2020 19:17:28 GMT

That makes sense because the features var is an array of graphics.

Re-looking at your code can you colsole.log(resultsLayer2.graphics) and make sure you have something there.

Re: query from Geometry

jaykapalczynski — Mon, 13 Apr 2020 19:39:22 GMT

Re: query from Geometry

jaykapalczynski — Mon, 13 Apr 2020 19:54:18 GMT

Both my datasets are Web Mercator Aux Sphere....

My map does not define a spatial reference....Could the Graphics be in a different projection and causing an issue?

Re: query from Geometry

jaykapalczynski — Mon, 13 Apr 2020 20:00:23 GMT

Looking at the console.log of the 1st Graphic Layer It appears to be in Web Mercator ....

Spatial Reference: 102100 / 3857

Why the heck cant I use this to query another FC with geometry and write that to a graphic...

Re: query from Geometry

RobertScheitlin__GISP — Sat, 11 Dec 2021 15:34:16 GMT

Jay,

Put an else in here and see if you can get a clue as to what is going wrong.

queryCountiesthatIntersect().then(displayResults2).else(function(err){
  console.log(err)
});

Re: query from Geometry

jaykapalczynski — Mon, 13 Apr 2020 20:33:15 GMT

Dosent give me anything...Add alert in there "In the Intersect" to make sure it was in the function

Nothing in the Console Error wise...

queryCountiesthatIntersect().then(displayResults2).else(function (err) {
console.log(err);
});

function queryCountiesthatIntersect() {
console.log("In the Intersect");
console.log(resultsLayer2.graphics);

Re: query from Geometry

RobertScheitlin__GISP — Mon, 13 Apr 2020 21:13:54 GMT

Jay,

Change.else to .catch

queryCountiesthatIntersect().then(displayResults2).catch(function (err) {
console.log(err);
});

Re: query from Geometry

jaykapalczynski — Mon, 13 Apr 2020 21:31:27 GMT

I got it with this: i was missing the "items"

query.geometry = resultsLayer2.graphics.items[0].geometry;

NOT

query.geometry = resultsLayer2.graphics[0].geometry;

I had to walk the console.log of the Graphics layer a bit more

Re: query from Geometry

jaykapalczynski — Mon, 13 Apr 2020 21:36:38 GMT

Thanks Robert Scheitlin, GISP‌ for steering me in the right direction......much appreciated.