You are currently reviewing an older revision of this page.
Cadastral Mapping requires clean linework so that accurate area measurements can be obtained. Early implementations of the Topology Creation and Topology Cleanup tools were written for MicroStation GeoGraphics and carried forward through the Bentley Map 2004, XM, and V8i (SELECTseries) products. While spatial data creation has improved over time, the Data Requirements (boundaries made from lines, with centroids) have not changed for these commands. If you have areas, polygons, or other closed shapes made from MicroStation elements, you will have to use MicroStation tools (i.e. the Drop command, or re-digitize) to break them down into their component parts for these commands to work properly.
The Find Slivers command is used to flag or merge slivers into adjacent areas. Slivers are very thin or small areas that are inadvertently created during digitizing or from the result of overlaying two topology layers. Removing slivers after digitizing consists of the following tasks:
See the Topology Operations section of the Bentley Map Help file for more details on each of the commands in the Topology Creation and Topology Cleanup toolbox
Here is an example of the Find Slivers command in action: