gml:LinearCS is a one-dimensional coordinate system that consists of the pointsthat lie on the single axis described. The associated coordinate is the distance – with orwithout offset – from the specified datum to the point along the axis. A LinearCS shall haveone gml:axis property element.
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="LinearCS" type="gml:LinearCSType" substitutionGroup="gml:AbstractCoordinateSystem"><annotation><documentation>gml:LinearCS is a one-dimensional coordinate system that consists of the points that lie on the single axis described. The associated coordinate is the distance – with or without offset – from the specified datum to the point along the axis. A LinearCS shall have one gml:axis property element.</documentation></annotation></element>