: xi = geo2auth (phi)

: xi = geo2auth (phi, spheroid)

: xi = geo2auth (phi, spheroid, angleUnit)

Returns the authalic latitude given geodetic latitude phi

Input

• phi: the geodetic latitude

• (optional) spheroid: referenceEllipsoid name, EPSG number, or parameter struct: the default is wgs84.
• (optional) angleUnit: string for angular units (’degrees’ or ’radians’, case-insensitive, just the first charachter will do). Default is ’degrees’.

Output

• xi: the authalic latitude

Example

geo2auth(45)
ans =  44.872

See also: geo2con, geo2iso, geo2rect.

Package: mapping