<complexType name="LinearRingType">
<annotation>
<documentation>A LinearRing is defined by four or more coordinate tuples, with linear interpolation between them; the first and last coordinates must be coincident.</documentation>
</annotation>
<complexContent>
<extension base="gml:AbstractRingType">
<sequence>
<choice>
<annotation>
<documentation>GML supports two different ways to specify the control points of a linear ring.
1. A sequence of "pos" (DirectPositionType) or "pointProperty" (PointPropertyType) elements. "pos" elements are control points that are only part of this ring, "pointProperty" elements contain a point that may be referenced from other geometry elements or reference another point defined outside of this ring (reuse of existing points).
2. The "posList" element allows for a compact way to specifiy the coordinates of the control points, if all control points are in the same coordinate reference systems and belong to this ring only. The number of direct positions in the list must be at least four.</documentation>
</annotation>
<choice minOccurs="4" maxOccurs="unbounded">
<element ref="gml:pos" />
<element ref="gml:pointProperty" />
<element ref="gml:pointRep">
<annotation>
<documentation>Deprecated with GML version 3.1.0. Use "pointProperty" instead. Included for backwards compatibility with GML 3.0.0.</documentation>
</annotation>
</element>
</choice>
<element ref="gml:posList" />
<element ref="gml:coordinates">
<annotation>
<documentation>Deprecated with GML version 3.1.0. Use "posList" instead.</documentation>
</annotation>
</element>
<element ref="gml:coord" minOccurs="4" maxOccurs="unbounded">
<annotation>
<documentation>Deprecated with GML version 3.0 and included for backwards compatibility with GML 2. Use "pos" elements instead.</documentation>
</annotation>
</element>
</choice>
</sequence>
</extension>
</complexContent>
</complexType>
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XSD Schema Diagram:
