gml:AbstractCoordinateSystem is a coordinate system (CS) is the non-repeatingsequence of coordinate system axes that spans a given coordinate space. A CS is derived froma set of mathematical rules for specifying how coordinates in a given space are to beassigned to points. The coordinate values in a coordinate tuple shall be recorded in theorder in which the coordinate system axes associations are recorded. This abstract complextype shall not be used, extended, or restricted, in an Application Schema, to define aconcrete subtype with a meaning equivalent to a concrete subtype specified in thisdocument.
Database handle for the object. It is of XML type ID, so is constrained to beunique in the XML document within which it occurs. An external identifier for the object inthe form of a URI may be constructed using standard XML and XPointer methods. This is doneby concatenating the URI for the document, a fragment separator, and the value of the idattribute.
Source
<element name="AbstractCoordinateSystem" type="gml:AbstractCoordinateSystemType" abstract="true" substitutionGroup="gml:Definition"><annotation><documentation>gml:AbstractCoordinateSystem is a coordinate system (CS) is the non-repeating sequence of coordinate system axes that spans a given coordinate space. A CS is derived from a set of mathematical rules for specifying how coordinates in a given space are to be assigned to points. The coordinate values in a coordinate tuple shall be recorded in the order in which the coordinate system axes associations are recorded. This abstract complex type shall not be used, extended, or restricted, in an Application Schema, to define a concrete subtype with a meaning equivalent to a concrete subtype specified in this document.</documentation></annotation></element>