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Validate Topology

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

  • This tool will only process dirty areas. For details on dirty areas, see Topology in ArcGIS.

  • If the tool is being used while the topology layer is open in the Map, 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})
ParameterExplanationData Type
in_topology

The geodatabase topology to be validated.

Topology Layer
visible_extent
(Optional)

Determines whether to use the current visible extent of the map or the full extent of the topology. If run in the Python window or in a Python script, the entire extent of the topology will be validated regardless of this parameter setting.

  • Full_ExtentThe entire extent of the topology will be validated. This is the default.
  • Visible_ExtentOnly 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
arcpy.ValidateTopology_management("D:/Calgary/Trans.gdb/Streets/Street_Topo")

Environments

Licensing information

  • ArcGIS Desktop Basic: No
  • ArcGIS Desktop Standard: Yes
  • ArcGIS Desktop Advanced: Yes

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