HowTo: Determine if a region subclass has overlapping features

Article ID:	19313
Software:	ArcGIS - ArcInfo 8.0.1, 8.0.2, 8.1 ArcInfo Workstation 7.2.1
Platforms:	N/A

Summary

This document shows how to determine if a region subclass has overlapping features.

Procedure

This example uses a coverage called CLEANEDCOV, which contains a region subclass called TEMP.

Use REGIONPOLYCOUNT to create an INFO file that lists the number of region features that overlap each polygon.

Usage: REGIONPOLYCOUNT <in_cover> <out_info_table>

                       {$ALL|subclass...subclass}



Arc: REGIONPOLYCOUNT cleanedcov overlaps.frq temp

Start Tables, select the INFO file created by REGIONPOLYCOUNT, and use LIST to display item values for the selected records.

Arc: TABLES



Tables: SELECT overlaps.frq



Tables: LIST

Record  POLY# TOTAL  TEMP

     1      1     0     0

     2      2     1     1

     3      3     2     2

     4      4     1     1

RESELECT records where TOTAL > 1 to find polygons that are part of multiple region features.
```
Tables: RESELECT TOTAL > 1

1 Records Selected.



Tables: LIST

Record  POLY# TOTAL  TEMP

     3      3     2     2
```
The polygon with an internal number = 3 is part of 2 region features in the TEMP subclass.

Created: 5/22/2001
Last Modified: 7/17/2001