Hi Jack Fairfield,
From the documentation (ArcGIS API for JavaScript 4.11):
A FeatureLayerView represents the LayerView of a FeatureLayer after it has been added to a Map in either a MapView or SceneView.
Apparently, as you code sample shows, this FeatureLayerView is updated every time you zoom in or out and the queryFeatureCount() only returns the number of features within the view extent.
Solution:
If you want to query more than just the features within the view extent you should not query the FeatureLayerView, but instead the FeatureLayer itself.
See the code snippet (modified from your sample) below: querying the layerView will return a limited number of features (depending on the zoom level) whereas querying the featureLayer will always return 73,642, i.e. the total number of Census Tracts in the Feature Service.
So, accessing the FeatureLayer itself will allow you to query more features than currently present in the view extent.
Does this solve your issue?
Egge-Jan
view.whenLayerView(featureLayer).then(function (layerView) {
layerView.watch("updating", function (value) {
if (!value) {
featureLayer
.queryFeatureCount()
.then(function (results) {
console.log(results);
})
layerView
.queryFeatureCount()
.then(function (results) {
console.log(results);
})
.catch(function (error) {
console.error("query failed: ", error);
});
}
});
});
