topic Filter for polygon in ArcGIS JavaScript Maps SDK Questions

Filter for polygon

BraulioCordova — Tue, 14 Jul 2020 06:13:54 GMT

I am wanting to do a point filter for a polygon. But when passing the geometry, the points do not filter. Allen Thompson

mapView.whenLayerView(areaspriorizadas).then(function(featureLayerView) {

featureLayerView.filter = {

geometry: distrito,

patialRelationship: "contains"

};

});

Re: Filter for polygon

RobertScheitlin__GISP — Tue, 14 Jul 2020 12:59:27 GMT

Are the points and the polygon in the same spatial reference?

Re: Filter for polygon

BraulioCordova — Tue, 14 Jul 2020 19:44:23 GMT

If they are in the same coordinate system. But when I pass the parameter of the polygon geometry. I get an error.

let areaspriorizadas = new FeatureLayer({

url:

urlservices+"/Areas_Priorizadas/FeatureServer/0",

//definitionExpression: "id_dist="+ubigeo,

// mapView.extent = featureLayer.fullExtent;

outFields: ["trimestre"]

//featureReduction: distrito

// renderer: distrito

});

map.add(areaspriorizadas);

//****************************** */

mapView.whenLayerView(areaspriorizadas).then(function(featureLayerView) {

featureLayerView.filter = {

//where: "trimestre='I Trimestre'",

geometry: distrito.event.geometry, //Problems in geometry when passing the polygon stops to the exclusion of points.

patialRelationship: "contains"

};

});

Re: Filter for polygon

RobertScheitlin__GISP — Tue, 14 Jul 2020 20:08:06 GMT

I don't see in your code what distrito.event object is.

Re: Filter for polygon

BraulioCordova — Tue, 14 Jul 2020 20:25:43 GMT

areaspriorizadas is type point
distrito is type polygon
Filtering points within a polygon is required

Re: Filter for polygon

RobertScheitlin__GISP — Tue, 14 Jul 2020 21:03:51 GMT

The issue is that if

geometry: distrito.event.geometry

was a single polygon with the same spatial reference as areaspriorizadas then there would not be any issue.

So are you sure that distrito.event.geometry is not null and is a single polygon geometry?

Re: Filter for polygon

BraulioCordova — Tue, 14 Jul 2020 21:26:29 GMT

What happens is that I want to filter the points (areaspriorizadas) within a polygon (distrito). At the time of passing the extension to consider. It does not filter the contained points. I have seen that if I put (geometry: view.extent) it filters the extension of the map. But I don't know how to filter the points inside the polygon (distrito)

var distrito = new FeatureLayer({

url: urlservices+"/Demarcacion_Territorial/MapServer/2",

title: 'Distrito',

//*** ADD ***//

definitionExpression: "id_dist="+ubigeo,

//*** ADD ***//

popupTemplate: { // Enable a popup

title: "Distrito", // Show attribute value

"content": "Departamento: {departamento} Provincia: {provincia} Distrito: {distrito} "

}

});

map.add(distrito);

// Visualizacion de areas priorizadas

let areaspriorizadas = new FeatureLayer({

url:

urlservices+"/Areas_Priorizadas/FeatureServer/0",

//definitionExpression: "id_dist="+ubigeo,

// mapView.extent = featureLayer.fullExtent;

outFields: ["trimestre"]

//featureReduction: distrito

// renderer: distrito

});

map.add(areaspriorizadas);

distrito.queryExtent().then(function(response){mapView.goTo(response.extent);})

//****************************** */

mapView.whenLayerView(areaspriorizadas).then(function(featureLayerView) {

featureLayerView.filter = {

//where: "trimestre='I Trimestre'",

geometry: mapView.geometry.Extent(distrito),

patialRelationship: "contains"

};

});

Re: Filter for polygon

RobertScheitlin__GISP — Sat, 11 Dec 2021 17:09:45 GMT

As I mentioned before you can only filter the view on a Single geometry. So you would have to get a single feature from the distro featurelayer and grab the one features geometry to use in the filter.

      mapView.whenLayerView(areaspriorizadas).then(function(featureLayerView) {
       var polyFeat, query;
       query = distrito.createQuery();
       query.outSpatialReference = view.spatialReference;
       query.returnGeometry = true;
       distrito.queryFeatures(query).then(function(results){
         polyFeat = results.features[0].geometry;
       });
       featureLayerView.filter = {
          geometry: polyFeat,
          patialRelationship: "contains"
        };    
      });‍‍‍‍‍‍‍‍‍‍‍‍‍

Re: Filter for polygon

BraulioCordova — Mon, 20 Jul 2020 13:29:59 GMT

I have tried the code, but it still does not filter the points by polygon. Maybe there is something I am not considering.

mapView.whenLayerView(featureLayer).then(function(featureLayerView) {

var polyFeat, query;

query = distrito.createQuery();

//query.where = "id_dist='"+ubigeo+"'";

query.outSpatialReference = mapView.spatialReference;

query.returnGeometry = true;

distrito.queryFeatures(query).then(function(results){

polyFeat = results.features[0].geometry;

});

featureLayerView.filter = {

geometry: polyFeat,

spatialRelationship: "contains"

};

});

Re: Filter for polygon

BraulioCordova — Thu, 20 Aug 2020 04:13:08 GMT

I made some adjustments and it worked perfectly. Thank you very much for your support

mapView.whenLayerView(featureLayer).then(function(featureLayerView) {

var query = distrito.createQuery();

query.outSpatialReference = mapView.spatialReference;

query.returnGeometry = true;

distrito.queryFeatures(query).then(function(results){

featureLayerView.filter = {

geometry: results.features[0].geometry,

patialRelationship: "contains"

};

});