WMS:General Coverage

Sometimes you may be unsure which coverage attributes to use, especially when importing a layer from another source (GIS, CAD). The general coverage allows you to create/edit points/nodes, arcs, and polygons without defining attributes, or worrying about special rules associated the different coverages and attributes. For examples WMS requires that stream and time computation arcs be defined from downstream to upstream. If you import data from another source you have no guarantee of the ordering, and if you import them to a Drainage Coverage type it may cause problems. Therefore, you can import them to a general coverage, make appropriate edits (streams can be reordered by selecting the downstream most point and choosing the Reorder Streams command from the Feature Objects menu), and then convert the coverage to a drainage type.

Related Topics

• Feature Objects
• Coverages