Whenever - only once in a while - I use Sketchup Pro’s geolocation imagery (by Digital Globe) I seem to experience a slight offset in xy-coordinates compared to what I consider are the correct coordinates. The discrepancy is in the order of 3-5 meters.
Thus, the Digital Globe imported imagery if off from our national digital maps.
By comparison, in my experience Google Earth has it right, Digital Globe has it wrong. Admittedly I do not use Digital Globe’s stuff often, my alternatives are much better these days. However, I really wonder if anyone else has had the same experience. Or is the Digital Globe stuff
not suited for precise placement? Yeah, I do have observed the lousy resolution…
As an illustration consider the Greenwich coordinates 51.4934° N, 0.0098° E. The first picture is from Google Earth, the coordinates in the roundabout center.
The second picture is by importing Digital Globe imagery into Sketchup, clearly the coordinates does not pinpoint the center.
Anyone else with experience in this matter?