gml:Ring

A ring is used to represent a single connected component of a surface boundary as specified in ISO 19107:2003, 6.3.6.
Every gml:curveMember references or contains one curve, i.e. any element which is substitutable for gml:AbstractCurve. In the context of a ring, the curves describe the boundary of the surface. The sequence of curves shall be contiguous and connected in a cycle.
If provided, the aggregationType attribute shall have the value "sequence".

Element information

Namespace: http://www.opengis.net/gml/3.2

Schema document: external/ogc/gml/3.2.1/geometryPrimitives.xsd

Type: gml:RingType

Properties: Global, Qualified

Content

gml:curveMember [1..*]

Attributes

Name	Occ	Type	Description	Notes
aggregationType	[0..1]	gml:AggregationType		from group gml:AggregationAttributeGroup

Used in

Type gml:RingPropertyType
Type gml:ArrayAssociationType (Element gml:members)
Type gml:AbstractRingPropertyType (Elements gml:exterior, gml:interior)

Substitution hierarchy

gml:AbstractObject
- can be substituted with gml:AbstractRing
  - can be substituted with gml:Ring

Sample instance

<gml:Ring>
   <gml:curveMember>
      <gml:LineString gml:id="ID">
         <gml:metaDataProperty>...
         </gml:metaDataProperty>
         <gml:description>string</gml:description>
         <gml:descriptionReference/>
         <gml:identifier codeSpace="http://www.example.com/">string</gml:identifier>
         <gml:name>string</gml:name>
         <gml:pos>1.0 1.0</gml:pos>
      </gml:LineString>
   </gml:curveMember>
</gml:Ring>