linePlane.xsd A GML conformant schema for specialised geometries lines and planes Copyright (c) 2006 Open Geospatial Consortium - see http://www.opengeospatial.org/about/?page=ipr An abstraction of a line to support the different levels of complexity. The line can always be viewed as a geometric primitive, i.e. is logically continuous. The "AbstractLine" element is the abstract head of the substituition group for all elements representing (infinite) Lines. Line carries an id, so can be used as the target of a reference. This is useful so that the survey defines a 1-D CRS used for indexing information along the borehole. Line is expressed as an origin and direction. A simple direction relative to the origin. An abstraction of a plane to support the different levels of complexity. The plane can always be viewed as a geometric primitive, i.e. is logically continuous. The "AbstractPlane" element is the abstract head of the substituition group for all elements representing (infinite) planes. Plane defined by its normal and a point contined within the plane.