ITopology2.ZClusterTolerance Property

The z cluster tolerance of the topology.

[Visual Basic .NET]
Public ReadOnly Property ZClusterTolerance As Double

[C#]
public double ZClusterTolerance {get;}

[C++]
HRESULT get_ZClusterTolerance(
  double* tolerance
);

[C++]

Parameters
tolerance [out, retval]
  tolerance is a parameter of type double

Product Availability

Remarks

The ZClusterTolerance property returns the Z cluster tolerance that was specified when the topology was built.  As with the cluster tolerance, the Z cluster tolerance of the topology cannot be changed. In order to modify the Z cluster tolerance, the topology must be deleted and rebuilt with the new ZClusterTolerance value.

Unlike the cluster tolerance property, the ZClusterTolerance value indicates cluster tolerance distance as well as the Z clustering model that applies to the topology.  A ZClusterTolerance value of 0 signifies the Building model, Z values of coincident vertices are not changed. A ZClusterTolerance value greater than 0 signifies the Terrain model, Z values of coincident vertices that are within the Z clsuter tolerance will be averaged together, based on the ZRank assigned to the features. (see ITopologyClass::ZRank )

ZClusterTolerance will return a value of -1 for any topology:

• created in a pre-9.0 geodatabase (8.3 with or without any service pack), either programmatically or with the New Topology Wizard
• built using the CreateTopology method

See Also