Validate Topology

The Validate Topology tool is used to test the assumption that topology is represented by boundaries which surround centroids, with one centroid for every area. If a failure is found, text elements are placed that describe the nature of the problem. For each error, a line is drawn from the origin of the text message to one of the failed elements. The text is placed using the active text settings and level.

Code	Description
multA	The centroid has multiple associated areas.
multC	The area has multiple centroids.
noA	The centroid has no associated area.
noC	The area has no associated centroid.
unuB	The area has an unused line. This line is not used to infer the area surrounding a centroid.

To validate topology:

Place a fence around the target linework.
Select the Validate Topology tool.
Initiate the processing with a data point.
Review the content of the Results dialog.
The results can be saved or appended to a text file by selecting the appropriate option from the Results dialog File menu.

Key-in: FENCE VALIDATE TOPOLOGY