Schema Central > NIEM 2.1 > geometryPrimitives.xsd > gml:OffsetCurve
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An offset curve is a curve at a constant distance from the basis curve. offsetBase is the base curve from which this curve is defined as an offset. distance and refDirection have the same meaning as specified in ISO 19107:2003, 6.4.23.
The content model follows the general pattern for the encoding of curve segments.

Element information

Type: gml:OffsetCurveType

Properties: Global, Qualified



numDerivativesAtStart [0..1]xsd:integerDefault value is "0". from type gml:AbstractCurveSegmentType
numDerivativesAtEnd [0..1]xsd:integerDefault value is "0". from type gml:AbstractCurveSegmentType
numDerivativeInterior [0..1]xsd:integerDefault value is "0". from type gml:AbstractCurveSegmentType

Used in

Substitution hierarchy

Sample instance

      <gml:LineString gml:id="ID">
         <gml:identifier codeSpace="">string</gml:identifier>
         <gml:pos>1.0 1.0</gml:pos>
   <gml:distance uom="">1.0</gml:distance>
   <gml:refDirection>1.0 1.0</gml:refDirection>

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