<complexType name="CovarianceMatrixType">
    <annotation>
        <documentation>Error estimate covariance matrix. </documentation>
    </annotation>
    <complexContent>
        <extension base="gml:AbstractPositionalAccuracyType">
            <sequence>
                <element ref="gml:unitOfMeasure" maxOccurs="unbounded">
                    <annotation>
                        <documentation>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. </documentation>
                    </annotation>
                </element>
                <element ref="gml:includesElement" maxOccurs="unbounded">
                    <annotation>
                        <documentation>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. </documentation>
                    </annotation>
                </element>
            </sequence>
        </extension>
    </complexContent>
</complexType>

• gml:AbstractPositionalAccuracyType
  • CovarianceMatrixType
  • gml:covarianceMatrix