Assertion: ellipsoid's surface | /r/HasProperty | defined
Facets:
value: mathematically
type: MANNER
value: for mapping earth’s surface
type: PURPOSE
Source sentences:
text: In a GIS, an ellipsoid refers to a three-dimensional shape whose surface can be mathematically defined so that coordinates can be assigned to locations on the surface.
text: A suitable geometrical mathematical surface is necessary to be defined for mapping Earth’s surface as its surface is very complex, making it unsuitable for computations and mapping.
text: In geodesy, a reference ellipsoid is a mathematically defined surface that approximates the geoid, the truer[further explanation needed] figure of the Earth, or other planetary body.
text: The reference ellipsoid is a mathematically defined surface that approximates the physical shape of the Earth.