Entity geoid_model

• A mathematical model that describes the surface of a geoid based upon a geodetic datum and associated reference ellipsoid. The geoid model is defined using a set of spherical harmonic coefficients or an implemented set of algorithms in a computer program.

Attribute                                 Flags   Data Type

From business_object:
   data_collection                        IV      set[0 .. N] of (data_collection)

                                          Indicates the data collections that include this
                                          instance of E and P data. 

   graphical_element                      IV      set[0 .. N] of (graphical_element)

                                          Specifies one or more graphical elements which
                                          are depicting this data item. 

   datum_for_ranking                      IV      set[0 .. N] of (object_ranking)

                                          Indicates that an object is being used as a basis
                                          for comparison with another object. 

   object_of_ranking                      IV      set[0 .. N] of (object_ranking)

                                          Indicates that an object is being classified in
                                          a rank order based on its characteristics. 

   subject_of_contract                    I       set[0 .. N] of (contract)

                                          These are the contracts that specify information
                                          about the business object, and the business object
                                          is subject to the terms of these contracts. 

   derived_interest                       IV      set[0 .. N] of (derived_interest_makeup)

                                          These are the ownership fractions for business
                                          associates of this business object. 

   subject_of_contract_designation        IV      set[0 .. N] of (contract_designation)

                                          This defines the contract designations that are
                                          made for this business object. For example, this
                                          may be the contract designations that define the
                                          specific interest ownership fractions of the business
                                          object as it is bought and sold. 

   guideline_or_privilege                 IV      set[0 .. N] of (guideline_or_privilege)

                                          These are the guidelines, limitations, regulations
                                          or privileges that are specifically defined for
                                          this business object. Other general guidelines,
                                          etc., that apply to this business object are defined
                                          via the typical and class relationships (if any)
                                          defined for this business object. 

   guideline_or_privilege_compliance      IV      set[0 .. N] of (guideline_or_privilege_compliance)

                                          These are the designations of compliance with
                                          guidelines, limitations, regulations and privileges
                                          that are made for this business object. Each compliance
                                          statement describes the state of compliance for
                                          a specified guideline, limitation, regulation
                                          or privilege for a period of time. 

   satisfy_obligation                     IV      set[0 .. N] of (contractual_obligation)

                                          These are the contractual obligations that this
                                          business object is designated as fulfilling, either
                                          completely or partially. 


From grid_geometry_behavior:
   represent                              I       grid_geometry_behavior

                                          This is the geometry description that is the original
                                          for which this representation is an equivalent
                                          representation. 

   grid_element_behavior                  IV      set[0 .. N] of (grid_element_behavior)

                                          This geometry description of a grid is used as
                                          the specific geometry in which these element properties
                                          of the grid apply for. These property descriptions
                                          in the grid are within the context of this geometry
                                          description. 

   representations                        IV      set[0 .. N] of (grid_geometry_behavior)

                                          This designates other geometries that are stated
                                          to be equivalent representations of this geometry
                                          representation, such as the same geometry using
                                          another coordinate system. 


data_value                                N       ndt_geoidal_undulation

                                          The representation used to define the geoid undulation
                                          with respect to points on a geodetic datum and
                                          the associated reference ellipsoid. These
                                          representations may be a set of coefficients,
                                          algorithms, grids, or computer software. 

description                                       ndt_comment

                                          A remark about the geoid model. 

identifier                                MU      ndt_name

                                          The identifier for a geoid model. 

geodetic_datum                            M       geodetic_datum

                                          This describes the geodetic datum which was used
                                          as the basis of this geoid model. The geoid is
                                          described by this model relative to this geodetic
                                          datum. 

geoid                                     V       set[0 .. N] of (geoid)

                                          These are the geoids that are generated using
                                          this geoid model. 

End of entity geoid_model

M - mandatory, U - unique, I - inherited, V - inverse, N - named type