Hello,
I'm using esri js api v 4.10. and when i use the area measurement widget ( AreaMeasurement2D ) the result is not correct in Auto mode (planar mode as i measure features have perimeter less than 100 km) but when i switch the mode to geodesic the area is semi accurate.
Pls find attached files.
The real area for this polygon is (479.304 Arces).
Thanks in advance.
Hi Abdelrahman Abdelrazek, the geodesic mode is the more appropriate (accurate) mode in this scenario. From our doc:
"When using input geometries with a spatial reference of either WGS84 (wkid: 4326) or Web Mercator, it is best practice to calculate areas using geodesicArea()."
geometryEngine | API Reference | ArcGIS API for JavaScript 4.10
We will be updating the behaviors of the 2D measurement widgets in the upcoming release to make this less confusing. Hope this helps.
-Noah
Thank you so much for this clarification.
Noah Sager
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