<element name="TimeCoordinateSystem" type="gml:TimeCoordinateSystemType" substitutionGroup="gml:TimeReferenceSystem">
<annotation>
<documentation>A temporal coordinate system shall be based on a continuous interval scale defined in terms of a single time interval.
The differences to ISO 19108 TM_CoordinateSystem are:
- the origin is specified either using the property gml:originPosition whose value is a direct time position, or using the property gml:origin whose model is gml:TimeInstantPropertyType; this permits more flexibility in representation and also supports referring to a value fixed elsewhere;
- the interval uses gml:TimeIntervalLengthType.
</documentation>
</annotation>
</element>
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