geo:Arc
An Arc is an arc string with only one arc unit, i.e. three control points including the start and end point. As arc is an arc string consisting of a single arc, the attribute ?numArc? is fixed to "1".
Element information
Namespace: http://niem.gov/niem/geospatial/2.1
Schema document: geospatial/2.1/geospatial.xsd
Type: geo:ArcType
Properties: Global, Qualified, Nillable
Content
- Choice [0..*]
- gml:Arc An Arc is an arc string with only one arc unit, i.e. three control points including the start and end point. As arc is an arc string consisting of a single arc, the attribute "numArc" is fixed to "1".
- gml:Circle A Circle is an arc whose ends coincide to form a simple closed loop. The three control points shall be distinct non-co-linear points for the circle to be unambiguously defined. The arc is simply extended past the third control point until the first control point is encountered.
from subst. group gml:Arc
Attributes
| Name | Occ | Type | Description | Notes |
|---|---|---|---|---|
| s:id | [0..1] | xsd:ID | from type s:ComplexObjectType | |
| s:metadata | [0..1] | xsd:IDREFS | from type s:ComplexObjectType | |
| s:linkMetadata | [0..1] | xsd:IDREFS | from type s:ComplexObjectType |
Sample instance
<geo:Arc> <gml:Arc numArc="1"> <gml:pos>1.0 1.0</gml:pos> </gml:Arc> </geo:Arc>