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Mean radius of planet Earth


R = earthRadius
R = earthRadius(lengthUnit)


R = earthRadius returns the scalar value 6371000, the mean radius of the Earth in meters.

R = earthRadius(lengthUnit) returns the mean radius of the Earth using the specified unit of length. The lengthUnit input may be any value accepted by the validateLengthUnit function.


Retrieve the mean radius of the Earth, using several units.

earthRadius             % Returns 6371000

earthRadius('meters')   % Returns 6371000

earthRadius('km')       % Returns 6371

Introduced in R2010b