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Diagrams
Instances
Properties
Source
Used by
Element gml:secondDefiningParameter
Namespace http://www.opengis.net/gml/3.2
Annotations
gml:secondDefiningParameter is a property containing the definition of the second parameter that defines the shape of an ellipsoid. An ellipsoid requires two defining parameters: semi-major axis and inverse flattening or semi-major axis and semi-minor axis. When the reference body is a sphere rather than an ellipsoid, only a single defining parameter is required, namely the radius of the sphere; in that case, the semi-major axis "degenerates" into the radius of the sphere.
The inverseFlattening element contains the inverse flattening value of the ellipsoid. This value is a scale factor (or ratio). It uses gml:LengthType with the restriction that the unit of measure referenced by the uom attribute must be suitable for a scale factor, such as percent, permil, or parts-per-million.
The semiMinorAxis element contains the length of the semi-minor axis of the ellipsoid. When the isSphere element is included, the ellipsoid is degenerate and is actually a sphere. The sphere is completely defined by the semi-major axis, which is the radius of the sphere.
Diagram
Diagram index166.tmp#id1212
Properties
content: complex
Used by
Complex Type gml:EllipsoidType
Model gml:SecondDefiningParameter
Children gml:SecondDefiningParameter
Instance
<gml:secondDefiningParameter>
  <gml:SecondDefiningParameter>{1,1}</gml:SecondDefiningParameter>
</gml:secondDefiningParameter>
Source
<element name="secondDefiningParameter">
  <annotation>
    <documentation>gml:secondDefiningParameter is a property containing the definition of the second parameter that defines the shape of an ellipsoid. An ellipsoid requires two defining parameters: semi-major axis and inverse flattening or semi-major axis and semi-minor axis. When the reference body is a sphere rather than an ellipsoid, only a single defining parameter is required, namely the radius of the sphere; in that case, the semi-major axis "degenerates" into the radius of the sphere. The inverseFlattening element contains the inverse flattening value of the ellipsoid. This value is a scale factor (or ratio). It uses gml:LengthType with the restriction that the unit of measure referenced by the uom attribute must be suitable for a scale factor, such as percent, permil, or parts-per-million. The semiMinorAxis element contains the length of the semi-minor axis of the ellipsoid. When the isSphere element is included, the ellipsoid is degenerate and is actually a sphere. The sphere is completely defined by the semi-major axis, which is the radius of the sphere.</documentation>
  </annotation>
  <complexType>
    <sequence>
      <element ref="gml:SecondDefiningParameter"/>
    </sequence>
  </complexType>
</element>
Schema location http://schemas.opengis.net/gml/3.2.1/datums.xsd