2012

TREESTAT
Quick Reference
See also:
■ Increase Performance with Large Referenced Drawings
■ Work with Layer and Spatial Indexes
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 and object selection are very slow, you can improve their
performance. For example, if there are 50 megabytes of memory available and
the current drawing has 50,000 objects with only 1,000 nodes in the index
tree, increase the
TREEDEPTH value to improve performance.
Each node consumes about 80 bytes of memory. The fewer objects per node
of the oct-tree, the better the performance.
1958 | Chapter 20 T Commands