topic Using sketch widget to draw polygon. It returns polygon rings from selection. I need to convert the ring data to geoJSON and having issues. in ArcGIS JavaScript Maps SDK Questions

Using sketch widget to draw polygon. It returns polygon rings from selection. I need to convert the ring data to geoJSON and having issues.

naglane — Tue, 24 Aug 2021 21:30:19 GMT

Hello, as the title says I am having trouble converting ring data to geoJSON.

I had a look at the Geometry class from the ArcGIS javascript library, but I don't understand how to use it to convert the ring data to geoJSON.

The array of rings that I am working with looks like this:

rings = [
          [
           -13441425.32511117,
           4491520.711015136
        ],
        [
          -13440894.1920939,
          4491511.685098792
        ],
       [
          -13440922.71925878,
          4490494.010447212
        ],
      [
          -13441438.25014971,
          4490494.010447212
        ],
       [
          -13441425.32511117,
          4491520.711015136
      ]
  ]

Any help would be greatly appreciated!

Re: Using sketch widget to draw polygon. It returns polygon rings from selection. I need to convert the ring data to geoJSON and having issues.

MehdiPira1 — Tue, 31 Aug 2021 02:15:34 GMT

Hi @naglane ,

The following code snippet converts rings to polygonJson (geojson):

const rings = [ [ [ -13441425.32511117, 4491520.711015136 ], [ -13440894.1920939, 4491511.685098792 ], [ -13440922.71925878, 4490494.010447212 ], [ -13441438.25014971, 4490494.010447212 ], [ -13441425.32511117, 4491520.711015136 ] ] ]; const polygon = new Polygon({ rings: rings, spatialReference: { wkid: 4326 } });

I hope that's helpful.