<element name="VerticalCS" type="gml:VerticalCSType" substitutionGroup="gml:AbstractCoordinateSystem">
<annotation>
<documentation>gml:VerticalCS is a one-dimensional coordinate system used to record the heights or depths of points. Such a coordinate system is usually dependent on the Earth's gravity field, perhaps loosely as when atmospheric pressure is the basis for the vertical coordinate system axis. A VerticalCS shall have one gml:axis property element.</documentation>
</annotation>
</element>
|