ArcGIS Pro 3.1 API Reference Guide
ArcGIS.Core.Geometry Namespace / IGeometryEngine Interface / SetConstantZ Method
The polygon or polyline to replace Zs.
The Z value to assign.
Example

In This Topic
    SetConstantZ Method (IGeometryEngine)
    In This Topic
    Replaces each Z value on the geometry with the specified Z value.
    Syntax
    Function SetConstantZ( _
       ByVal multipart As Multipart, _
       ByVal zValue As Double _
    ) As Multipart

    Parameters

    multipart
    The polygon or polyline to replace Zs.
    zValue
    The Z value to assign.

    Return Value

    A geometry in which each coordinate has the specified Z value.
    Exceptions
    ExceptionDescription
    Multipart is null or empty.
    This geometry is not Z-Aware.
    Example
    Set all Zs in a polyline
    List<Coordinate3D> coordsZ = new List<Coordinate3D>()
    {
      new Coordinate3D(1, 2, 3),
      new Coordinate3D(4, 5, 6),
      new Coordinate3D(7, 8, double.NaN)
    };
    
    Polyline polyline = PolylineBuilderEx.CreatePolyline(coordsZ);
    // polyline.HasZ = true
    
    Polyline polylineSetZ = GeometryEngine.Instance.SetConstantZ(polyline, -1) as Polyline;
    // polylineSetZ.Points[0].Z = -1
    // polylineSetZ.Points[1].Z = -1
    // polylineSetZ.Points[2].Z = -1
    
    polylineSetZ = GeometryEngine.Instance.SetConstantZ(polyline, double.NaN) as Polyline;
    // polyline.HasZ = true
    // polylineSetZ.Points[0].HasZ = true
    // polylineSetZ.Points[0].Z = NaN
    // polylineSetZ.Points[1].HasZ = true
    // polylineSetZ.Points[1].Z = NaN
    // polylineSetZ.Points[2].HasZ = true
    // polylineSetZ.Points[2].Z = NaN
    
    polylineSetZ = GeometryEngine.Instance.SetConstantZ(polyline, double.PositiveInfinity) as Polyline;
    // polyline.HasZ = true
    // polylineSetZ.Points[0].HasZ = true
    // polylineSetZ.Points[0].Z = double.PositiveInfinity
    // polylineSetZ.Points[1].HasZ = true
    // polylineSetZ.Points[1].Z = double.PositiveInfinity
    // polylineSetZ.Points[2].HasZ = true
    // polylineSetZ.Points[2].Z = double.PositiveInfinity
    Requirements

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3.0 or higher.
    See Also