/*
 * STRUCT: SRM_EC_3D_PARAMETERS
 *
 *   The parameters needed to define the Augmented Equidistant Cylindrical
 *   (AEC) 3D Spatial Reference Frame (SRF).  See the Spatial Reference
 *   Model for details.
 */
typedef struct
{
/*
* Specification of Object Reference Model (ORM)
*/
SE_HORIZONTAL_DATUM_ENUM horizontal_datum;
SE_VERTICAL_DATUM_ENUM vertical_datum;
/*
* Specification of Projection Basis (standard parallel)
*/
SE_FLOAT64 geodetic_latitude; (notes)
SE_FLOAT64 geodetic_longitude; (notes)
/*
* Origin Displacement of Coordinate System
*/
SE_FLOAT64 x_offset; (notes)
SE_FLOAT64 y_offset; (notes)
SE_FLOAT64 central_scale_factor; (notes)
SRM_ELEVATION_UNITS_ENUM z_units; (notes)
} SRM_EC_3D_PARAMETERS;

Field Notes

geodetic_latitude

 in degrees; standard parallel and origin of the projected X
 axis (which is positive northwards)

geodetic_longitude

 in degrees; specifying the meridian of the Y axis;
 positive northwards)

x_offset

 origin relative displacement in x

y_offset

 origin relative displacement in y

central_scale_factor

 unitless; normally close to (<=)1.0

z_units

 Spatial Reference Frame units
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