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Identifying geometric network build errors(ArcInfo and ArcEditor only)

Release 9.2
Last modified February 1, 2008
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About identifying geometric network build errors

NOTE: Although geometric networks can be both created and edited in ArcInfo and ArcEditor, they are read-only in ArcView.



When building a geometric network, the feature classes that are selected to participate in the network may contain features whose geometries are invalid within the context of a geometric network. These geometries include:


Features with invalid geometries are identified during the network building process and recorded in the network build errors table. The table is identified as the geometric network’s name appended with "_BUILDERR", for example, a network called "MyNetwork" will have a network build errors table called "MyNetwork _BUILDERR". The table is located at the workspace level and lists the Object ID, Class ID and Errortype for each error. The Errortype value corresponds to the esriNetworkErrorType enumeration, which lists the possible reason why a feature’s geometry is invalid with a geometric network. At the end of the geometric network build process, a summary of the errors listed in the table is displayed in a dialog box.

The network build errors table is a user-managed table. As such, it does not get updated when the features listed within are edited. It is up to the end user to update the table’s contents as soon as possible after creation so that the table will correctly reflect the state of the features. The table is used by the Network Build Errors command within ArcMap to identify the features with invalid geometries.

The methodology for repairing a network build error is dependent on the type of invalid geometry.
Learn more about repairing network feature geometry

Learn more about other network connectivity detection and repair tools


How to identify geometric network build errors (ArcInfo and ArcEditor only)

  1. Click View, point to Toolbars, and click Geometric Network Editing. The Geometric Network Editing toolbar is added to ArcMap.
  2. Add your network feature classes to ArcMap.
  3. On the Network toolbar, click Edit, then click Start Editing.
  4. In the ArcMap table of contents, select a layer that participates in the geometric network.
  5. Click the Build Errors command.
  6. A dialog box indicating the number of errors is displayed, and the features with illegal geometries are selected.

Tips

  • If you built your geometric network in an ArcSDE geodatabase, you will need to register the data as versioned before you can start editing.
  • Learn more about registering and unregistering data as versioned
  • If the number of errors indicated by the Network Build Errors dialog box does not match the number of selected features, you may have illegal features with empty geometry or zero length. Open the attribute editor to identify the illegal features according to feature class.
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