Create a dragmapr hierarchy state — d_hierarchy

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

d_hierarchy_state(
  root = d_state(),
  children = list(),
  active_path = character(),
  relationships = NULL,
  version = 0L
)

validate_dragmapr_hierarchy_state(hierarchy)

Arguments

root: A root d_state().
children: Named list of child d_state() objects.
active_path: Character vector describing the active path through the hierarchy.
relationships: Optional normalized table from d_relationships().
version: Integer hierarchy revision.
hierarchy: A dragmapr_hierarchy_state.

Value

An object of class "dragmapr_hierarchy_state".