13.1.29 axis

The gml:axis property is an association role (ordered sequence) to the coordinate system axes included in this coordinate system. The coordinate values in a coordinate tuple shall be recorded in the order in which the coordinate system axes associations are recorded, whenever those coordinates use a coordinate reference system that uses this coordinate system. The gml:AggregationAttributeGroup should be used to specify that the axis objects are ordered.

Table 13.1.29-1 Associations

Association	Notes
From: axis. To: CoordinateSystemAxisPropertyType Generalization
From: AbstractCoordinateSystemType. 1..*To: axis Association