Super-Relation

A super-relation is a relation that contains other relations. Relations have initially been created to contain nodes, ways or areas and combinations thereof.

A super-relation is referred to as a 'parent' in Osmosis. The hierarchical structure of super- and sub-relations is also called a 'nested relation'.

Usage

Nested relations are virtually undocumented and rarely used but still there is an effort to process them.

• Routes, especially national and international cycling and hiking routes should be rendered by Waymarked Trails
• Routes, general? by the OSM Route Manager
• boundaries are used to build a hierarchy tree by Boundaries.pl

An example of a super-relation is the Great Lakes 1124369 1124369. It contains five members for each of the five lakes. Each member is itself a relation.

See also

• Pros and cons of nested route relations: Relation:route#Creating super-relations for routes
• Implementation: Super-Relation/Implementation