ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / TinLayer Class / InterpolateZ Method
The x coordinate.
The y coordinate.
The method of interpolation. The default method of interpolation for TINs is SurfaceInterpolationMethod.Linear./
Example Version

InterpolateZ Method (TinLayer)
Interpolates the z coordinate of the specified xy location from the surface layer. This method must be called on the MCT. Use QueuedTask.Run.
Syntax

Parameters

x
The x coordinate.
y
The y coordinate.
interpolationMethod
The method of interpolation. The default method of interpolation for TINs is SurfaceInterpolationMethod.Linear./

Return Value

The surface elevation Z value.
Exceptions
ExceptionDescription
The set of parameters is invalid for this surface. See CanInterpolateShape.
An exception occurred within the InterpolateShape calculation.
This method or property must be called within the lambda passed to QueuedTask.Run.
Example
Interpolate Z at an x,y location
var tinLayer = MapView.Active.Map.GetLayersAsFlattenedList().OfType<TinLayer>().FirstOrDefault();
await QueuedTask.Run(() =>
{
  // interpolate values at the specified x,y location
  double z = tinLayer.InterpolateZ(x, y, SurfaceInterpolationMethod.NaturalNeighborZNearest);

  // or use a different interpolation method
  z = tinLayer.InterpolateZ(x, y, SurfaceInterpolationMethod.Linear);
});
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3.4 or higher.
See Also