Minimizing topology errors when migrating parcel data using geodatabase topology

This topic applies to ArcEditor and ArcInfo only.

When migrating parcel data to the parcel fabric using the Load A Topology To A Parcel Fabric geoprocessing tool, feature classes of polygons and lines need to be validated against a required set of topology rules before running the tool. Any topology errors need to be cleaned before the loading process. To minimize topology errors, the following tools can be run on the feature class data before defining and validating the topology:

• Multipart To Singlepart

  The topology requires that line features must be single-part lines.

  The Multipart To Singlepart geoprocessing tool separates (explodes) multipart features into separate, single-part features. You can also use the Explode tool located on the Advanced Editing toolbar to separate a selected multipart feature into its individual, component features in ArcMap.

• Planarize Lines

  The topology requires that line features must not intersect each other or self-intersect.

  The Planarize Lines tool on the Topology toolbar splits lines into individual segments at their points of intersection. This can be useful when you have nontopological line work that has been spaghetti digitized or imported from computer-aided design (CAD) drawings.

• Split Line At Vertices

  Multisegment lines will be migrated as line strings (natural boundaries), by default, if the line has more than 10 segments. You can change this default in the Minimum Line String Segment Count parameter for the Load A Topology To A Parcel Fabric geoprocessing tool. Otherwise, if you have no natural boundaries in your data, you can split lines at their vertices.

  The Split Line At Vertices geoprocessing tool splits lines at each vertex for the entire input feature class. This tool will turn single, multisegment line features into multiple line features. You can also use the Split Into COGO Lines tool located on the COGO toolbar. This tool will split selected, multisegment lines into single lines in ArcMap.