Drawing (DWG) objects
can contain multiple geometry types, while SHP files contain only
one. However, the Shape Multiclass option lets
you export multiple drawing objects to a set of SHP files in a folder
you specify. Each resulting SHP will contain the geometry and attributes
for a single geometry type. For example, if pipes, roads, and streams
are all represented by lines, you will export three sets of SHP
files, each one containing the geometry and attributes for one of
those object types. For information about the set of files produced
for SHP and their naming conventions, see Importing ESRI Shape Files.
You can specify that
the resulting files use a single feature class or multiple feature
classes based on layer, object classification, object data, or link
All new SHP classes that
contain text entities will have a property called TEXTSTRING. To
bring this information back into AutoCAD Map 3D, select the import option
to import points as text.
To create polygons when
you use this export option, select the Treat Closed Polylines
As Polygons option.
You can export to a single
feature class that uses all the items you specified on the Data tab.
To do this, click One class and type a name for
You can export
data to multiple classes at one time and
combine the data organization in your drawing with your selections
on the Data tab to determine the attributes
for each exported feature class.
SHP files do not support
color; in ArcView, each theme is assigned a color that is used when
an item is drawn.
SHP files do not support
circular arcs. During export, arcs, splines, and ellipses are converted
to segmented polylines. You can change the settings used for segmentation
in the mapexport.ini file.
You cannot map fields
when you export to Shape Multiclass. If you need
to map fields, export your DWG data to SDF first, and then use Migrating Data Bulk
Copy to export the data to SHP.
Overwriting and Appending
If you export to an existing
folder containing files with the same names as those that will be
generated by the export, you can choose to overwrite the existing
data or append the new data to it. Overwriting can destroy the existing
files when it creates new ones. Appending adds the data in the current export
operation to the existing data without deleting any existing data.
If you append and you are transforming the coordinate system for
the data, the old data and the new data must both use the same source
and target coordinate systems. You cannot use the append option
to update existing data, but only to add new data.
your data meets these criteria but the export operation fails, try
deleting the relevant .prj files in the target folder and then retry
the export operation.
When exporting to SHP
files, you can select 2 Dimension Shape Files or
3 Dimension Shape Files from
the driver options.