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Results tagged with ellipsoid
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user 5900
An ellipsoid is a closed quadric surface that is a three-dimensional analogue of an ellipse. In geodesy, a reference ellipsoid is a mathematically-defined surface that approximates the geoid, the truer figure of the Earth, or other planetary body.
2
votes
1
answer
676
views
What datum (reference ellipsoid) does Nasa Worldwind use?
What datum (reference ellipsoid) does Nasa Worldwind use?
I can't seem to find where Nasa Worldwind tells explicitly what datum they use. I need some sort of valid link. …
10
votes
2
answers
38k
views
What datum (reference ellipsoid) does Google Earth use?
What datum (reference ellipsoid) does Google Earth[1] use?
I can't seem to find where Google Earth tells explicitly what datum they use. I need some sort of valid link. …