A Surface is a 2-dimensional primitive and is composed of one or more surfacepatches as specified in ISO 19107:2003, 6.3.17.1. The surface patches are connected to oneanother. patches encapsulates the patches of the surface.
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.
<element name="Surface" type="gml:SurfaceType" substitutionGroup="gml:AbstractSurface"><annotation><documentation>A Surface is a 2-dimensional primitive and is composed of one or more surface patches as specified in ISO 19107:2003, 6.3.17.1. The surface patches are connected to one another. patches encapsulates the patches of the surface.</documentation></annotation></element>