topic Highlight features from map.allLayers in ArcGIS JavaScript Maps SDK Questions

Highlight features from map.allLayers

Vakhtang_Zubiashvili — Fri, 27 Jan 2023 10:13:54 GMT

Hi folks,

I am selecting features from all layers on my map and now i want to highlight all selected features. I do it using this code:

let highlight; map.allLayers.forEach(layer => { // Query all layers data if (layer.type === "feature" && layer.visible){ layer.queryFeatures(query) .then((results) => { const graphics = results.features; // console.log(graphics); // do something with query results highlight = highlight(graphics); }) } });

But i get error: Uncaught (in promise) TypeError: highlight is not a function;

How can i simply achive this?

Thanks

Re: Highlight features from map.allLayers

ReneRubalcava — Fri, 27 Jan 2023 14:54:32 GMT

Highlight is a method on the LayerView, so you need a reference to the LayerView that your features come from.

https://developers.arcgis.com/javascript/latest/api-reference/esri-views-layers-FeatureLayerView.html#highlight

You get a reference to the LayerView for each layer using the view.whenLayerView method.

https://developers.arcgis.com/javascript/latest/api-reference/esri-views-MapView.html#whenLayerView

Then you can use the layerView to highlight the features you are interested in.

Here is one of a few samples that show how to use highlight

https://developers.arcgis.com/javascript/latest/sample-code/sandbox/?sample=widgets-feature-multiplelayers

Re: Highlight features from map.allLayers

Vakhtang_Zubiashvili — Wed, 08 Feb 2023 11:14:47 GMT

Thank you @ReneRubalcava , you helped me, awesome!