I'm trying to save a map for offline use with a given raster.
The raster is being generated from
https://elevation.arcgis.com/arcgis/rest/services/WorldElevation/Terrain/ImageServerf
Afterwards, I add the raster to the operational layers of the map.
When I try to save the map using the info from Create an offline map—ArcGIS Runtime SDK for iOS | ArcGIS for Developers it informs me that the layer is not available for offline use.
To go around this I tried trying to export the raster to a AGSExportTileCacheTask, however this continually fails.
Does anyone know how this might be done to save the raster?
My ultimate goal is to render a raster representing slope_degrees onto a baseman. The slope degrees are generated from the url provided above.