topic Re: Buffer multiple polygons > Send results to FeatureTable in ArcGIS JavaScript Maps SDK Questions

Buffer multiple polygons > Send results to FeatureTable

khanley — Wed, 03 Aug 2022 21:48:33 GMT

I'm attempting to create a buffer option on my map that will take any number of features, buffer all parcels within 300 feet of the parcels selected, and then show the results in a FeatureTable, as well as highlight those features within the radii on my map.

I have the buffer working for a single feature, and have it filtering the geometry to the FeatureTable, but I can't quite figure out how to get it working with an array. I also can't figure out how to highlight the returned features on the map.

Here is my code so far:

      function buffertheSelection(event) {
          var parcel = [];
          var dist = [];
          dist.push(300);
          for (i=0; i < features.length; i++){
            parcel.push(features[i].feature.geometry);
          }
          const ptBuff = geometryEngine.buffer(parcel, dist, "feet");
          featureTable.clearSelectionFilter();
          for (i=0; i < ptBuff.length; i++){
            featureTable.filterGeometry = ptBuff[i].extent;
          }
      }

Re: Buffer multiple polygons > Send results to FeatureTable

UndralBatsukh — Wed, 03 Aug 2022 22:08:30 GMT

Hi there,

Have you seen this sample: https://developers.arcgis.com/javascript/latest/sample-code/highlight-features-by-geometry/? Sounds like you are doing what this sample shows.

Re: Buffer multiple polygons > Send results to FeatureTable

ReneRubalcava — Wed, 03 Aug 2022 22:08:41 GMT

One of the options for the geometryEngine buffer is unionResults

https://developers.arcgis.com/javascript/latest/api-reference/esri-geometry-geometryEngine.html#buffer

This will return a single buffer geometry for all the geometries buffered and you can use that in the filter.

Re: Buffer multiple polygons > Send results to FeatureTable

khanley — Fri, 05 Aug 2022 14:52:10 GMT

Thank you so much.