Subset of dataQuality.xsd for WCS 1.2 profile. Primary editor: Arliss Whiteside. Last updated 2007-04-23 Copyright © 2007 Open Geospatial Consortium, Inc. All Rights Reserved. Position error estimate (or accuracy) data. A description of the position accuracy parameter(s) provided. Closeness of reported coordinate values to values accepted as or being true. Closeness of the relative positions of two or more positions to their respective relative positions accepted as or being true. A quantitative result defined by the evaluation procedure used, and identified by the measureDescription. Error estimate covariance matrix. Ordered sequence of units of measure, corresponding to the row and column index numbers of the covariance matrix, starting with row and column 1 and ending with row/column N. Each unit of measure is for the ordinate reflected in the relevant row and column of the covariance matrix. Unordered set of elements in this covariance matrix. Because the covariance matrix is symmetrical, only the elements in the upper or lower diagonal part (including the main diagonal) of the matrix need to be specified. Any zero valued covariance elements can be omitted. An element of a covariance matrix. Row number of this covariance element value. Column number of this covariance element value. Value of covariance matrix element.