Jian,
I am not trying to create an elevation profile. All I want to do is click a point on the map and get the elevation of that point. It seems like it should be as simple and basic as getting the latitude and longitude of a point on the map.
Layers 1 and 2 of the World Topo Map service indicate that they are Elevation (m) and Elevation (ft). One would think that this service could be used for getting the elevation. However, if that is not the case, and the elevation profile service is the answer then how does one get the elevation of a single point? That service does not seem to provide that.
Thanks,
Charlie