public sealed class HVDatumTransformation : DatumTransformation

Public NotInheritable Class HVDatumTransformation Inherits DatumTransformation

ArcGIS Pro 3.0 API Reference Guide

HVDatumTransformation Class

In This Topic

A hv (horizontal/vertical) datum transformation is used when
projecting Z-Aware geometries between two different geographic coordinate systems and two
different vertical coordinate systems. As with geographic transformations, a hv datum
transformation converts everything that needs to be changed including the units,
prime meridian, and the ellipsoid. In addition, a hv datum transformation transforms height.
Every transformation is defined in a particular forward direction, but all are reversible.
For example, suppose your Z-Aware geometry is in WGS84 with vertical coordinate system EGM2008_Geoid,
and you want to project to NAD83_2011 with vertical coordinate system NAD83_2011.
A hv datum transformation is defined to project your Z-Aware geometry from WGS84 with
vertical coordinate system EGM2008_Geoid to NAD83_2011 with vertical coordinate system NAD83_2011.
If you are projecting from NAD83_2011 with vertical coordinate system NAD83_2011 to
WGS84 with vertical coordinate system EGM2008_Geoid to NAD83_2011, you can use the reversed
form of the transformation.

Object Model

Syntax

public sealed class HVDatumTransformation : DatumTransformation

Public NotInheritable Class HVDatumTransformation Inherits DatumTransformation

Inheritance Hierarchy

System.Object

ArcGIS.Core.Geometry.DatumTransformation

**ArcGIS.Core.Geometry.HVDatumTransformation**

Requirements

**Target Platforms: **Windows 11, Windows 10, Windows 8.1

See Also