POSC Specifications: Epicentre Version 3.0
Logical Data Model
ENTITY
PROJECTED_2D_COORDINATE_SYSTEM
(* Open *)
SUBTYPE OF
(
geodetic_coordinate_system
);
map_projection :
map_projection
;
source_geodetic_system :
geographic_2d_coord_system
;
INVERSE
grid_convergence_reference :
SET [0:?] OF
pty_grid_convergence
FOR
projected_2d_coordinate_system;
WHERE
val1: SIZEOF(coordinate_system_axis) = 2;
val2: (SIZEOF(QUERY ( csa <* coordinate_system_axis | (csa.axis_order = 1) )) = 1) AND (SIZEOF(QUERY ( csa <* coordinate_system_axis | (csa.axis_order = 2) )) = 1);
END_ENTITY
; (* projected_2d_coordinate_system *)
Generated on Tue Jul 10 19:38:14 2001
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