During import, AutoCAD Map 3D copies
data from the input file into the active AutoCAD Map 3D drawing and
converts the data to drawing objects.
Connecting to Data Directly
You can work with your
data using Data Connect or by importing it.
When you use Data
Connect (from Display Manager),
you view and edit data in its source. Edits are saved back to the
source. The data stays in its original location.
When you import data,
you make a copy of the data and bring that copy into your map. When
you edit the data, you are editing the copy. The original data is
For some formats, such
as MicroStation Design (DGN), Arc/INFO, and SDF 2 (Autodesk MapGuide
6.5 and earlier), you can only import and export the data. For most
other formats, you can either connect directly to the data or use
import and export.
more information, see Overview of Bringing In GIS Features.
Before You Import a File
Before you import a file,
determine the following:
- Determine whether to limit the import
to the current display area or to an area that you define.
- Decide where to put objects: on an existing
layer in the map, on a new layer, or on a layer specified in the
file you are importing.
- Determine which incoming data values
to use to populate the object class data fields, and decide how
to handle data values that do not fall within the acceptable object
class range (keep them as-is or assign them default object class
- Assign a coordinate system to the current AutoCAD Map 3D drawing. You
need to know which coordinate system is used with the input files.
- Determine whether to import the data
as object data or as external data, and whether to use an existing
table or create a new one.
- Import point objects as points, text,
or blocks. When you import as blocks, be sure you have copied the
block you want into the AutoCAD Map 3D drawing.
For information on importing
specific formats, see the following: