BC MOF Base GML Types schema. Copyright (c) 2002 BC Ministry of Forests, All Rights Reserved. Base type for MOF Features that provides any common MOF feature properties. Spatial Metadata is the primary example of a common property. Encloses a choice of either a LineString or MultiLineString geometry. Type for spatial metadata properties. Metadata fields are optional, since they are often unknown or not present The source of the spatial data, e.g. Field Survey, Air Photos, etc. Most recent collection date of the source data The method used to capture the spatial data, e.g. Differential GPS, Tablet Digitizing, etc. The data the observation was made. The data accuracy percentile. Quantifies the percentage of features which are statistically expected to fall within the horizontal and vertical accuracy bounds. Ex: 95 A description that can be used to clarify any of the values in the spatial meta-data. The TRIM CCSM code which best describes the feature. Ex: GA9100032 The horizontal accuracy bound. Ex: 15 The vertical accuracy bound. Ex: 10 The horizontal datum. Must be one of:Nad83, nad27. The vertical datum. In British Columbia most vertical data uses the Canadian Vertical Datum. Ex: cvd28 The system in which the coordinates are observed. Datum code will give the translations and rotations, if any. Note that datum includes the coordinate system (usually implies geodetic), the size of the reference surface (NAD 27 uses the Clark 1866 ellipsoid), the position of the reference surface (translations and rotations) and the scale difference, if any, with respect to the geocenter.