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ISpatialReference.GetZDomain Method (ArcObjects .NET 10.6 SDK)
ArcObjects Library Reference (Geometry)  

ISpatialReference.GetZDomain Method

The Z domain extent.

[Visual Basic .NET]
Public Sub GetZDomain ( _
    ByRef outZMin As Double, _
    ByRef outZMax As Double _
)

[C#]
public void GetZDomain (
    ref double outZMin,
    ref double outZMax
);

[C++]
HRESULT GetZDomain(
  System.Double* outZMin,
  System.Double* outZMax
);

[C++]

Parameters
outZMin [out]

  outZMin is a parameter of type double*
outZMax [out]

  outZMax is a parameter of type double*

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Description

An alternative method to the GetZFalseOriginAndUnits method. Returns the minimum and maximum allowed Z values for a spatial reference. Use GetZFalseOriginAndUnits to obtain the Z precision (1/resolution) value.

[C#]

//This code example shows how to get the Z domain extent of a dataset.
private void GetZDomain(IFeatureClass featureClass)
{
    IGeoDataset geoDataset=featureClass as IGeoDataset;
    //get access to SpatialReference through IGeoDataset
    ISpatialReference spatialReference=geoDataset.SpatialReference;
    //get the Z domain extent of the dataset
    double zMin;
    double zMax;
    spatialReference.GetZDomain(out zMin, out zMax);
    System.Windows.Forms.MessageBox.Show(zMin + ", " + zMax);
}

[Visual Basic .NET]

    'This code example shows how to get the Z domain extent of a dataset.
    'This example assumes that a valid workspace object has already been 'established.
    Sub GetZDomain_Example(ByRef pWorkspace As IWorkspace)
        Dim pFeatWS As IFeatureWorkspace
        pFeatWS=pWorkspace
        Dim pFeatDS As IFeatureDataset
        pFeatDS=pFeatWS.OpenFeatureDataset("railroad")
        Dim pGeoDataset As IGeoDataset
        pGeoDataset=pFeatDS

        'get access to SpatialReference through IGeoDataset
        Dim pSpatRef As ISpatialReference
        pSpatRef=pGeoDataset.SpatialReference
        'dimension variables that will be used to store the Z domain extent of
        'the dataset
        Dim dZmin As Double
        Dim dZmax As Double
        'get the Z domain extent of the dataset
        pSpatRef.GetZDomain(dZmin, dZmax)
        Debug.Print(dZmin & ", " & dZmax)
    End Sub

See Also

ISpatialReference Interface