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You can edit them using the same commands. However, the objects are now
“features” and are stored in a data file, rather than in an AutoCAD drawing.
You can also publish your map to a DWF file. People without a copy of
AutoCAD Map 3D can view this format using a free, downloadable viewer
available from http://www.autodesk.com/designreview.
Exercise 1: Export a map to Autodesk SDF
The drawing you used in Lesson 2: Clean Up Your Drawings (page 89) contains
object data (page 313) . Object data consists of attributes of the real-world objects
that the drawing objects represent. The object data is stored in the map itself
and is associated with individual drawing objects.
When you export drawing objects, you can use object data to create feature
classes in an SDF file. The resulting feature classes have properties that
correspond to the object data attributes.
In this exercise, the street centerlines in the drawing have three object data
attributes: Lanes, Speed_Limit, and Surface.
To export drawing objects to SDF
1 Navigate to and open the Street_Centerlines.dwg map you used in Lesson
2: Clean Up Your Drawings (page 89).
2 Click Output tab
➤
Map Data Transfer panel
➤
Map 3D Export.
3 In the Export Location dialog box, do the following:
■ Make sure Files Of Type is set to Autodesk SDF (*.SDF).
■ Specify a location and a file name for the exported file.
■ Click OK.
4 In the Export dialog box, on the Selection tab, make sure Select All is
selected.
5 Click the Feature Class tab, and do the following:
■ Click Create Multiple Classes Based On A Drawing Object.
■
For Drawing Object To Use, select Object Data.
■ Under Drawing Object, clear the Non-Classified check box.
128 | Chapter 3 Tutorial: Moving From AutoCAD to AutoCAD Map 3D