﻿ ReplaceNaNZs Method (GeometryEngine)—ArcGIS Pro
ArcGIS Pro 3.3 API Reference Guide
ArcGIS.Core.Geometry Namespace / GeometryEngine Class / ReplaceNaNZs Method
The geometry to replace non simple Zs.
The Z-value to assign.
Example

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ReplaceNaNZs Method (GeometryEngine)
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Replaces each non-simple (NaN) Z-value on the geometry with the specified Z-value. All other simple (non-NaN) Z-values are unchanged.
Syntax
```public Geometry ReplaceNaNZs(
Geometry geometry,
double zValue
)```
```Public Function ReplaceNaNZs( _
ByVal geometry As Geometry, _
ByVal zValue As Double _
) As Geometry```

#### Parameters

geometry
The geometry to replace non simple Zs.
zValue
The Z-value to assign.

#### Return Value

A geometry in which each coordinate has a simple (non-NaN) Z-value. If the input geometry is empty, then it is returned unchanged.
Exceptions
ExceptionDescription
Geometry is null.
The method is not implemented for GeometryBag.
This geometry is not Z-Aware.
Remarks
Use this function in conjunction with IsSimpleAsFeature prior to saving a geometry to a geodatabase.
Example
Replace NaN Zs in a polygon
```List<Coordinate3D> coordsZ = new List<Coordinate3D>()
{
new Coordinate3D(1, 2, double.NaN),
new Coordinate3D(4, 5, 3),
new Coordinate3D(7, 8, double.NaN)
};

Polygon polygon = PolygonBuilderEx.CreatePolygon(coordsZ);
// polygon.HasZ = true

Polygon polygonZReplaced = GeometryEngine.Instance.ReplaceNaNZs(polygon, -1) as Polygon;

// polygonZReplaced.Points[0].Z = -1
// polygonZReplaced.Points[1].Z = 3
// polygonZReplaced.Points[2].Z = -1```
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.