Autodesk Design Suite 3D - Planix Home Design Suite 3D Manual de Serviço descarregar pdf (Página 265)

Chapter 8 AutoCAD Map and AutoCAD Land Development Desktop

260

To break the polylines, use the Cleanup command. The following

illustration shows how the polyline was broken when using the

Cleanup command.

Polyline A was broken up at the locations marked by ’s so that

Parcel 1 and Parcel 2 are made up of discrete polylines. To obtain this

result, run the Cleanup command and select both the option to Break

Crossing Objects and the option to Correct Automatically.

Key Concepts

■

You should always repeat the Cleanup command until the

command no longer locates any problems with the objects.

■

You can convert 3D polylines, lines, or arcs to 2D polylines when

you clean up the drawing. You can also convert circles to arcs.

■

Remove duplicate lines from a drawing before you create a

topology or analyze the map. For example, in the preceding

illustration, Polyline B is shared between both parcels. You do not

want two lines or polylines representing this boundary. You can

select a cleanup option to delete duplicate lines.

■

If your parcel linework was comprised of lines and arcs, then you

can clean up the drawing and convert the parcel lines to

polylines. To do this, use the Create Closed Polylines command

from the Map

➤

Tools

➤

Topology menu. You then can use the

Define from Polyline command on the Parcels menu to define

the polylines as parcels.

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Autodesk Design Suite 3D - Planix Home Design Suite 3D Manual de Serviço Página 265