A hierarchy state keeps one parent/root dragmapr_state together with any
child-level states created while drilling into the map. It is useful for apps
that move between levels such as divisions, states, counties, or
municipalities without losing each level's edits.
Usage
dragmapr_hierarchy_state(
root = dragmapr_state(),
children = list(),
active_path = character(),
relationships = list(),
version = 0L
)
validate_dragmapr_hierarchy_state(hierarchy)Arguments
- root
A root
dragmapr_state().- children
Named list of child
dragmapr_state()objects.- active_path
Character vector describing the active path through the hierarchy.
- relationships
Optional list of parent-child lookup tables.
- version
Integer hierarchy revision.
- hierarchy
A
dragmapr_hierarchy_state.