Class Name: Feature Perimeter Data

Superclass - Base Perimeter Data

Definition

The feature-specific sub-class of Base Perimeter Data, which describes the outline of a region that is used for spatial indexing of Feature Hierarchies. Used to distinguish sibling Feature Hierarchy entries within a Perimeter Related Features aggregation.

Primary Page in DRM Diagram:

• 9

Secondary Pages in DRM Diagram:

• 8

Example

1. The spatial extent of a thematic coverage might be divided up into a collection of irregularly shaped tiles representing different countries, such that the Features located within each tile are organized into a separate Feature Hierarchy.
2. See also Perimeter Related Features.

FAQs

How does the ordered list of Locations define the perimeter?

Just "connect the dots" from the first Location to the last Location, with an implicit line connecting the last Location back to the first Location.

What is the purpose of this class?

This class allows Feature Hierarchies to be organized into spatial indexing regions of any shape.

Constraints

• Non Self Overlapping Perimeter Data Locations

Composed of (one-way)(inherited)

• an unbounded set of {ordered} Locations[3...]