samplingBase.xsd Sampling features are feature types that are used primarily for making observations: Station (0-D), SamplingFeature, and collections are described in this schema document Profile, Interval, Traverse, Flightline, Borehole (1-D) SurfaceOfInterest, Swath (2-D) SolidOfInterest (3-D) are described in extensiveSite.xsd Copyright (c) 2007 Open Geospatial Consortium - see http://www.opengeospatial.org/about/?page=ipr A "SamplingFeature" is a feature used primarily for taking observations. A samplingFeature is often associated with a set of member samplingFeatures: e.g. stations on a traverse, intervals in a borehole or section, boreholes within an area of interest. Pointer to the feature(s) being sampled, indicating the intention of the samplingFeature Link to description of the procedure used in determining the position of the samplingFeature. For complex procedures, such as when elevation and position are determined separately, may be disaggregated. A "SamplingFeatureRelation" is used to describe relationships between sampling features, including part-whole, siblings, etc.