InterpolateShapeVertices Method (TinLayer)

In This Topic

Interpolates Z values for a geometric shape from the surface layer at it's vertices only. This method must be called on the MCT. Use QueuedTask.Run.

Syntax

C#
Visual Basic (Declaration)

public Geometry InterpolateShapeVertices( 
   Multipart multipart,
   SurfaceInterpolationMethod interpolationMethod
)

Public Function InterpolateShapeVertices( _
   ByVal multipart As Multipart, _
   ByVal interpolationMethod As SurfaceInterpolationMethod _
) As Geometry

Parameters

multipart: The multipart to be interpolated. It must be a polyline or polygon.
interpolationMethod: The method of interpolation. The default method of interpolation for TINs is SurfaceInterpolationMethod.Linear./

Return Value

A ArcGIS.Core.Geometry.Geometry with surface elevation z values.

Exceptions

Exception	Description
System.ArgumentNullException	multipart cannot be null.
MappingException	An exception occurred within the InterpolateShapeVertices calculation.
ArcGIS.Core.CalledOnWrongThreadException	This method or property must be called within the lambda passed to QueuedTask.Run.

Remarks

A null geometry is returned if any portion of the input falls outside the surface.

InterpolateShapeVertices will handle differences in spatial reference between the input shape and the surface. It will project (a copy of) the input geometry to match the surface for the sake of interpolation. It will then re-project the output geometry so it's the same as the input shape.

A ArcGIS.Core.Geometry.Geometry with surface elevation z values.

Example

Interpolate Shape Verticies

var tinLayer = MapView.Active.Map.GetLayersAsFlattenedList().OfType<TinLayer>().FirstOrDefault();
await QueuedTask.Run(() =>
{
  // interpolate z values at the geometry vertices only
  Geometry output = tinLayer.InterpolateShapeVertices(polyline, SurfaceInterpolationMethod.NaturalNeighbor);
  if (output != null)
  {
    // process the output
  }

  // or use a different interpolation method
  output = tinLayer.InterpolateShapeVertices(polyline, SurfaceInterpolationMethod.Linear);
});

Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3.4 or higher.

Reference

TinLayer Class
TinLayer Members

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