feature.xsd v2.05 2001-02 GML Feature schema. Copyright (c) 2001 OGC, All Rights Reserved. An abstract feature provides a set of common properties. A concrete feature type must derive from this type and specify additional properties in an application schema. A feature may optionally possess an identifying attribute ('fid'). This abstract base type just makes the boundedBy element mandatory for a feature collection. A feature collection contains zero or more featureMember elements. A simple geometric property encapsulates a geometry element. Alternatively, it can function as a pointer (simple-type link) that refers to a remote geometry element. A featureMember is a feature (or feature collection); this type can be restricted in an application schema to allow only specified features as valid members. Alternatively, it can function as a simple link that points to a remote feature. Bounding shapes--a Box or a null element are currently allowed. Encapsulates a single point to represent position, location, or centerOf properties. Encapsulates a single polygon to represent coverage or extentOf properties. Encapsulates a single LineString to represent centerLineOf or edgeOf properties. Encapsulates a MultiPoint element to represent the following discontiguous geometric properties: multiLocation, multiPosition, multiCenterOf. Encapsulates a MultiLineString element to represent the following discontiguous geometric properties: multiEdgeOf, multiCenterLineOf. Encapsulates a MultiPolygon to represent the following discontiguous geometric properties: multiCoverage, multiExtentOf. Encapsulates a MultiGeometry element. If a bounding shape is not provided for a feature collection, explain why. Allowable values are: innapplicable - the features do not have geometry unknown - the boundingBox cannot be computed unavailable - there may be a boundingBox but it is not divulged missing - there are no features