I can't seem to find a way using the API to identify a layer that is not in a geoview. The specific use case is there is some calculation I need to perform based on a raster dem pixel value and some additional data in a polygon feature layer. I capture user click location and can easily get the intersecting polygon from the feature layer using a query, but the raster seems like I need to perform an identify to get the pixel value. The raster is NOT in the map, nor do I want it to be. I guess my questions are: If I need a pixel value from a raster... is identify the only way? If identify is the mechanism... it seems like that is only a method on a geoview. I don't see a way to identify just the raster layer even though that is a capability of the image service itself. Thanks in advance!
