Validate Topology (Data Management)

Summary

Validates a geodatabase topology.

Validate Topology performs the following operations:

• Cracking and clustering of feature vertices to find features that share geometry (have common coordinates)
• Inserting common coordinate vertices into features that share geometry
• Running a set of integrity checks to identify any violations of the rules that have been defined for the topology

Usage

• If you validate an enterprise geodatabase topology in ArcCatalog, the feature dataset that the topology is within must not be registered as versioned.

• This tool will only process dirty areas. For details on dirty areas, see Topology_in_ArcGIS.

• If the tool is being used in ArcMap, the Visible Extent parameter can be used to limit validation to the extent visible in the map display.

Syntax

ValidateTopology_management (in_topology, {visible_extent})

Parameter	Explanation	Data Type
in_topology	The geodatabase topology to be validated.	Topology Layer
visible_extent (Optional)	In ArcMap, determines whether to use the current visible extent of the map or the full extent of the topology. If run in ArcCatalog or in a Python script, the entire extent of the topology will be validated regardless of this parameter setting. FULL_EXTENT —The entire extent of the topology will be validated. This is the default. VISIBLE_EXTENT —Only the current visible extent will be validated.	Boolean

Code Sample

ValidateTopology example stand-alone script

The following stand-alone script demonstrates how to use the ValidateTopology function.

# Name: ValidateTopology_Example.py
# Description: Validates a topology

import arcpy
from arcpy import env

arcpy.ValidateTopology_management("D:\Calgary\Trans.mdb\Streets\Street_Topo")

Environments

Current Workspace

Licensing Information

ArcGIS for Desktop Basic: No

ArcGIS for Desktop Standard: Yes

ArcGIS for Desktop Advanced: Yes