User Guide

First, transform the raster data to REM objects, using one of three methods:
■ Convert individual line, arc, and circle entities to REM primitives. For more
information, see Defining REM Primitive Objects (page 178).
■ If the raster data can be defined with a rectangle, circle, or polygon, create
a REM region. For more information, see Defining REM Region Objects
(page 168).
■ If you want to remove a set of raster entities (lines, circles, arcs, or polygons)
in an area, or entities that are connected to each other, create a REM
enhanced bitonal region. For more information, see Defining REM
Enhanced Bitonal Regions (page 176).
Then delete the REM objects.
If you have selected a primitive object or an enhanced bitonal region object,
the object is removed and Raster Design cleans up the intersection.
In the following illustration, the left panel displays a REM primitive line in
red. The illustration on the right shows how the image appears after the
primitive line is deleted. The integrity of the circles and vertical line are
preserved.
You can also use REM delete commands to delete raster primitives. For more
information, see Removing Raster Entities Using REM Commands (page 156).
To use REM objects to delete raster data
1 Define the raster data you want to delete as a REM region, an enhanced
bitonal region, or a primitive object.
2 To delete a REM object immediately after defining it, select the object
and use the AutoCAD ERASE command.
196 | Chapter 7 Raster Entity Manipulation