Target layer: Polyline Layer

Description:  Ensures topological correctness of the target polyline layer.

Steps :

1. Set a polyline layer as a target in the Editor.
2. Click the ET Clean Polylines Command. Enter the Fuzzy tolerance in the dialog box that will open.

Results:

• Nodes will be created in all intersection points
• Redundant data (vertices and nodes closer to each other than the fuzzy tolerance) will be eliminated.
• Each set of duplicate lines (closer to each other than the fuzzy tolerance) will be replaced by a single polyline. This polyline will carry the attributes of one of the original polylines

Advantages: 

• Can be used in any version of ArcGIS (8.1 and above)
• Can be used  with any type of  license (ArcView, ArcEditor and ArcInfo)

Notes: 

• The command is global and will be applied to the entire target dataset.
• The default Fuzzy tolerance is calculated from the extents of the input layer using the formulae (W + H) / 2000000 where W and H are the with and height of the extent envelope.
• ArcGIS 9.2 and above: The Fuzzy tolerance cannot be smaller than the XY resolution of the dataset to be processed.
• Larger values of the Fuzzy tolerance may be used to clean some bigger Over and Under shoots, but it might lead to unwanted approximation of the input shapes. The better option is to use Fuzzy tolerance close to the default and then clean the remaining Dangling Nodes using the appropriate tools available in ET GeoTools.