3Com 3CRWX120695A Reference Manual page 111

Preparing a Drawing Before Importing It
3WXM has a file cleanup feature that can help remove unwanted
information from an imported drawing. However, the more cleanup work
you do before importing a file, the better the results will be. In addition,
cleaning up a file before importing it helps reduce the file size, which in
turn enhances performance when handling the file in 3WXM.
To prepare a drawing before importing it into 3WXM:
Make sure the scale of the paper space is 1" : 1" (full size). Also,
ensure that the scale type is the same as that of the model space.
Verify that the origin point (0,0) aligns correctly for all floors.
Delete all workspaces or paper layouts that are not required. If the
drawing contains multiple paper layouts, delete all but the last one
(which cannot be deleted) and delete the contents of that layout.
Check for externally referenced files. 3WXM requires the drawing file
to be monolithic. If a floor plan uses externally referenced files,
significant portions of the floor plan might be missing, even with all
layers unfrozen and visible.
In AutoCAD, when you load the drawing file, you might see messages
about the files not being found. To check for external references, you
can select Insert > Xref Manager. If you look at the layers, externally
referenced layers have a common prefix label with the $ delimiter
between the label and the description (for example,
SC03$a-WALL-FULL). If you can see the layer itself, the layer either will
be blank or will be a single read-only object.
To include the information in externally referenced files, place the files
in the same directory as the master file. In AutoCAD, you also can
bind the information to the master file by selecting
Insert > Xref Manager, selecting the file, then clicking Bind.
Adding information from referenced files can increase the file size. If
the information you will need to convert into RF obstacles is in the
referenced file but not the master file, try just importing the
referenced file into 3WXM.
Audit the drawing. An audit finds problems between objects in the file
and fixes them automatically. To perform an audit in AutoCAD, select
File > Drawing Utilities > Audit.
Check for grouped objects, especially groups that span multiple layers
or include the entire drawing. If a grouped object contains objects that
Importing or Drawing Floor Details 111