Creates a buffer space around a topology.
(tpm_anabuffer source_id offset var_id [result_name] [result_desc])
Returns T or nil.
| source_id | Source topology ID (real) |
| offset | Buffer offset (string), a standard Data Extension expression |
| var_id | Topology variables ID (real) |
| result_name | Resulting topology name (string) or nil |
| result_desc | Resulting topology description (string) or nil |
The topology variables ID references a set of topology variables.
This function draws one or more buffer perimeters. If the result argument is omitted or nil, the buffered topologies are AutoCAD objects only. Otherwise the function creates a new topology that is loaded but not open.
The source topology must be loaded and open. The Read/Write access of the source topology does not affect this function.
You can buffer any of the three topology types, node, network, or polygon.