<Property Grid> Has Its Own Spatial Reference Frame
Table Property Description
srf_parameters.dimensionality = SRM_DIM_THREE_D
srf_parameters.parameters.three_d = { SRM_SRF_3D_GD,
{ SRM_HDATUM_WGS_1984, SRM_VDATUM_WGS_84G, SRM_ELEV_UNIT_METRE }}
srf_parameters.dimensionality = SRM_DIM_THREE_D
srf_parameters.parameters.three_d = { SRM_SRF_3D_GD,
{ SRM_HDATUM_SPHERICAL_COA, SRM_VDATUM_ SPHERICAL_COA, SRM_ELEV_UNIT_METRE }}