2011

Closed objects, such as contours and lakes, can be cleaned up with the Break
Crossing Objects and Erase Dangling Objects actions. Use Break Crossing
Objects to create separate objects, and then use
Erase Dangling Objects (page
809) or the ERASE command. Verify that the shape created after editing reflects
the intended shape and that a distorted, closed area is not created.
NOTE AutoCAD Map 3D does not refer to a tolerance value when breaking crossing
objects. The Break Crossing Objects action corrects apparent problems across
layers and may break lines meant to indicate separate objects, such as rivers and
roads. Use Break Crossing Objects with one layer at a time to avoid this problem.
Using the Break Crossing Objects action on an arc whose endpoints are very close
may result in the duplication or extension of the arc.
See also:
■
Overview of Cleaning Up Maps (page 766)
■ Step 2: Setting Cleanup Options (page 771)
■ Overview of Cleanup Actions (page 788)
■ Erase Dangling Objects (page 809)
■ Overview of Editing a Topology (page 852)
798 | Chapter 6 Creating and Editing Data