2012

Access Methods
Menu: Modify  Object  Image  Transparency
List of Prompts
The following prompts are displayed.
Select image(s):
Enter transparency mode [ON/OFF] <current>: Enter an option or press
Enter
On Turns transparency on so that objects beneath the image are visible.
Off Turns transparency off so that objects beneath the image are not visible.
See also:
Modify Color and Transparency for Bitonal Raster Images
TREESTAT
Displays information about the drawing's current spatial index.
Access Methods
Command entry: 'treestat for transparent use
Summary
The program indexes objects in a region by recording their positions in space.
The result is called a spatial index. The spatial index is tree structured and has
branching nodes to which objects are attached. The index has two major
branches. The paper space branch is called a quad-tree and treats objects as
two-dimensional. The model space branch is called an oct-tree and treats
objects as either two- or three-dimensional. The model space branch can also
be changed to a quad-tree when you are working on two-dimensional drawings.
TREESTAT displays information about each branch. The most important
information is in the first two lines of the report—number of nodes, number
of objects, maximum depth of the branch, and average number of objects per
node.
If
REDRAW (page 869) and object selection are very slow, you can improve
their performance. For example, if there are 50 megabytes of memory available
1066 | Chapter 2 Commands