Latest Contributions by AndrewMurdoch1

Good Day This is related to another post I made about mapping 450,000 features onto the map.  I moved to using a hosted feature layer, which massively helped the memory usage, but now I'm stuck as the shape file I uploaded to make the hosted feature layer doesn't have much information.  Is it possible to add a field / attribute to a feature based on another set of data, on the client side after I grab that hosted feature layer? I have a large object from our DB that has colours, labels and etc... in it for the 450,000 features, one of those fields matches a value in the hosted layer, Objectdd = Objectd.  When I create the renderer for the hosted feature layer I'd like to add  a field / attribute into the feature so I know what it is, and later use it as a query point is this possible? Thanks ... View more

Good Day I have a massive data collection of ~450, 000 features that I'm mapping on to 18 feature layers using "bins" of 25,000 features / feature layer.  The following code generates those feature layers and after it runs I have 18 layers comprising my ~450, 000 features.   createFeatureLayers() { return new Promise( (r) => { for (const prop in this._geoData) { if (this._geoData.hasOwnProperty(prop)) { console.time('forLoop'); for (const geometryProp in this._geoData[prop]) { if (this._geoData[prop].hasOwnProperty(geometryProp)) { for (const binProp in this._geoData[prop][geometryProp]) { if (this._geoData[prop][geometryProp].hasOwnProperty(binProp)) { const buildFeatureLayers = true; if (buildFeatureLayers) { const data = this._geoData[prop][geometryProp][binProp]; if (data.length > 0) { switch (geometryProp) { case 'lines': const featureLayer = this.buildFeatureSettings(data, '#000000'); if (featureLayer) { this._layers[prop].lines[binProp] = new this.FeatureLayer(featureLayer); this._layers[prop].lines[binProp].maxScale = 0; this._layers[prop].lines[binProp].minScale = 3000000; } break; default: break; } } } } } } this._geoDataKeyIndex++; } console.timeEnd('forLoop'); } } }) } buildFeatureSettings(data, colour) { return { source: data, renderer: this.buildRenderSettings(data, colour), fields: this._fields, outFields: ['*'], objectIdField: 'ObjectID', geometryType: 'polyline', spatialReference: { wkid: 4326 }, }; } buildRenderSettings(data, colour: string) { return { type: 'simple', symbol: { type: 'simple-line', size: 30, width: 3, color: colour, outline: { width: 4, color: colour, } }, } } }   Once it's mapped onto my map view, the memory usage approximately doubles.  What is the recommended way to handle massive data sets?  Are there methods available that will remove features from the map view if they're not the current stationary  view?  Are there methods that will automatically add them?   Thanks ... View more