2011

■ Querying a Topology (page 1348)
NOTE This procedure is for drawing objects only. There is no equivalent for
geospatial feature data. However, you can use buffers to analyze features by
proximity and perform overlay analysis on two geospatial feature layers. See
Buffering Features in Your Map (page 1308)and Overlaying Two Feature Sources
(page 1316).
To create a polygon topology
1 Do one of the following to bring linework into the current drawing:
■ Attach the drawings containing the linework. Query the linework
into the current drawing.
■ Open the drawing containing the linework.
■ Import the linework from another file format.
2 Click Create tab ➤ Topology panel ➤ New.
3 In the Create Topology - Select Topology dialog box (page 1969):
■ Under Topology Type, click Polygon to indicate that you want to
create a polygon topology.
■ Enter a Topology Name and Topology Description for your new
topology.
Names can contain letters, numbers, and the underscore, hyphen,
and dollar characters. Names cannot include spaces.
■ Click Next.
4 Follow the on-screen instructions to specify the objects to use to create
the topology. You can also have AutoCAD Map 3D create any missing
nodes and centroids.
■ Use the
Create Polygon Topology - Select Links dialog box (page 1964)
to select the linear objects to use to generate polygons for the topology.
To use a closed polyline to create polygon topology, you must first
explode the closed polyline.
■ Use the
Create Polygon Topology - Select Nodes dialog box (page 1965)
to select the node objects to include in the topology.
836 | Chapter 6 Creating and Editing Data