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Attributes
Diagrams
Instances
Properties
Source
Element gml:Geodesic
Namespace http://www.opengis.net/gml
Diagram
Diagram index48.tmp#id186 index48.tmp#id187 index48.tmp#id188 index48.tmp#id185 index49.tmp#id621 index41.tmp#id194 index42.tmp#id71 index43.tmp#id189 index44.tmp#id412 index49.tmp#id620 index498.tmp#id622
Type gml:GeodesicType
Type hierarchy
Properties
content: complex
Model gml:posList | gml:pos | gml:pointProperty
Children gml:pointProperty, gml:pos, gml:posList
Instance
<gml:Geodesic interpolation="geodesic" numDerivativeInterior="0" numDerivativesAtEnd="0" numDerivativesAtStart="0">
  <gml:posList axisLabels="" count="" srsDimension="" srsName="" uomLabels="">{1,1}</gml:posList>
</gml:Geodesic>
Attributes
QName Type Fixed Default Use Annotation
interpolation gml:CurveInterpolationType geodesic optional
The attribute "interpolation" specifies the
curve interpolation mechanism used for this segment. This
mechanism uses the control points and control parameters to
determine the position of this curve segment. For an 
GeodesicString the interpolation is fixed as "geodesic".
numDerivativeInterior integer 0 optional
The attribute "numDerivativesInterior" specifies the type of continuity that is guaranteed interior to the curve. The default value of "0" means simple continuity, which is a mandatory minimum level of continuity. This level is referred to as "C 0 " in mathematical texts. A value of 1 means that the function and its first derivative are continuous at the appropriate end point: "C 1 " continuity. A value of "n" for any integer means the function and its first n derivatives are continuous: "C n " continuity.
NOTE: Use of these values is only appropriate when the basic curve definition is an underdetermined system. For example, line string segments cannot support continuity above C 0 , since there is no spare control parameter to adjust the incoming angle at the end points of the segment. Spline functions on the other hand often have extra degrees of freedom on end segments that allow them to adjust the values of the derivatives to support C 1 or higher continuity.
numDerivativesAtEnd integer 0 optional
The attribute "numDerivativesAtEnd" specifies the type of continuity between this curve segment and its successor. If this is the last curve segment in the curve, one of these values, as appropriate, is ignored. The default value of "0" means simple continuity, which is a mandatory minimum level of continuity. This level is referred to as "C 0 " in mathematical texts. A value of 1 means that the function and its first derivative are continuous at the appropriate end point: "C 1 " continuity. A value of "n" for any integer means the function and its first n derivatives are continuous: "C n " continuity.
NOTE: Use of these values is only appropriate when the basic curve definition is an underdetermined system. For example, line string segments cannot support continuity above C 0 , since there is no spare control parameter to adjust the incoming angle at the end points of the segment. Spline functions on the other hand often have extra degrees of freedom on end segments that allow them to adjust the values of the derivatives to support C 1 or higher continuity.
numDerivativesAtStart integer 0 optional
The attribute "numDerivativesAtStart" specifies the type of continuity between this curve segment and its predecessor. If this is the first curve segment in the curve, one of these values, as appropriate, is ignored. The default value of "0" means simple continuity, which is a mandatory minimum level of continuity. This level is referred to as "C 0 " in mathematical texts. A value of 1 means that the function and its first derivative are continuous at the appropriate end point: "C 1 " continuity. A value of "n" for any integer means the function and its first n derivatives are continuous: "C n " continuity.
NOTE: Use of these values is only appropriate when the basic curve definition is an underdetermined system. For example, line string segments cannot support continuity above C 0 , since there is no spare control parameter to adjust the incoming angle at the end points of the segment. Spline functions on the other hand often have extra degrees of freedom on end segments that allow them to adjust the values of the derivatives to support C 1 or higher continuity.
Source
<element name="Geodesic" type="gml:GeodesicType" substitutionGroup="gml:GeodesicString"/>
Schema location http://schemas.opengis.net/gml/3.1.1/base/geometryPrimitives.xsd