A buffer analysis identifies
objects within a specified offset of elements in node, network,
and polygon topologies. A buffer is a zone that is drawn around
a topology. For example, you might specify a buffer on either side
of a river to show the extent of a flood plain.
Note that topologies
can contain only drawing objects.
Analysis to show an area around an existing topology.
In this case, the buffer analysis of the power line network topology
creates a new polygon topology.
For buffering, you create
a new polygon topology from an existing node, network, or polygon
topology and specify a buffer offset.
The buffer offset can
- A positive or negative numeric value
- An expression
- A value specified by object data
- A value linked to an external database
You can use
negative offset values for polygon topologies
can improve the performance of buffering operations by increasing
the RAM to more than the recommended amount, or by increasing the
virtual memory on your system. This is recommended if you are buffering