topic Re: Convert Feature Layer to an array of Polygons in ArcGIS JS? in ArcGIS JavaScript Maps SDK Questions

Convert Feature Layer to an array of Polygons in ArcGIS JS?

NickRobles2 — Mon, 13 Feb 2017 19:45:22 GMT

Pretty straight forward: I am simply trying to get a feature layer

var floodLayer = new FeatureLayer("URL");

and convert it to a polygon array similar to:

var polygons = [];

for (var i = 0; i < floodLayer.graphics.length; i++) {
var polygons = new Polygon({ "rings": floodLayer.graphics.rings, "spatialReference": floodLayer.graphics.spatialReference });
}

However, feature layers don't appear to have the appropriate properties to create polygons. Unless I am missing something?

Re: Convert Feature Layer to an array of Polygons in ArcGIS JS?

Drew — Sat, 11 Dec 2021 17:47:54 GMT

I think you are making it harder than it is.. The geometry is already the 'Polygon'
Try the below sample

  //ARRAY OF POLYGONS
     var polygons = [];

     //LOOP THROUGH ARRAY OF GRAPHICS AND ADD TO POLYGON ARRAY
     array.forEach(floodLayer.graphics, function (graphic)
     {
          polygons.push(graphic.geometry);
     });

     //PRINT TO CONSOLE
     console.debug(polygons);‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Drew