we are in a need of generating the VS polygons and have found this example
which is great, though we are struggling to replicate the server side geoprocessing tool.
If we use out of the box viewshed 2 task, (as viewshed doesn't accept the distance), it takes nearly 3minutes (probably busy generating the TIF, but also, the grid is much more detailed (0.5m) for a point and 1km distance, whereas in the sample, it takes only 3secs.
Additionally, I can see that the model is returning the GPFeatureRecordSetLayer, which json, where as the viewshed 2 task generates only raster. Is this raster additionally converted to features?
Thank you for any insight on how we could improve on this.