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SemimajorAxis
As of Version 7.0, 
has become a property of GeodesyData.
has become a property of GeodesyData.
is an option for SpheroidalDistance which specifies the length of the semimajor axis in the spheroidal model.
更多信息
- To use
, you first need to load the Geodesy Package using 
. - SemimajorAxis->length specifies that the length of the semimajor axis of the spheroid is length kilometers.
- The default setting, representing Earth, is 6378.14, from the WGS-84 standard.
