class Proj::Datum
Public Instance Methods
ellipsoid()
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Return the ellipsoid
@see proj.org/development/reference/functions.html#c.proj_get_ellipsoid
@return [PjObject]
# File lib/proj/datum.rb, line 17 def ellipsoid ptr = Api.proj_get_ellipsoid(self.context, self) self.class.create_object(ptr, self.context) end
frame_reference_epoch()
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Returns the frame reference epoch of a dynamic geodetic or vertical reference frame
@see proj.org/development/reference/functions.html#c.proj_dynamic_datum_get_frame_reference_epoch
@return [Float] The frame reference epoch as decimal year, or -1 in case of error.
# File lib/proj/datum.rb, line 8 def frame_reference_epoch Api.proj_dynamic_datum_get_frame_reference_epoch(self.context, self) end
prime_meridian()
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Returns the prime meridian
@see proj.org/development/reference/functions.html#c.proj_get_prime_meridian
@return [PjObject]
# File lib/proj/datum.rb, line 27 def prime_meridian ptr = Api.proj_get_prime_meridian(self.context, self) self.class.create_object(ptr, self.context) end