Published member-container containment edges between periodized WHEP
polities: which admin/subnational polity sits inside which container
polity, and for what years. This is the piece polity_area_crosswalk and
polity_label_aliases do not carry – both map a reporting area or a
label to a polity, while this table relates polities to each other. Any
WHEP admin unit (a province, a prefecture, ...) is already a
polity_type == "subnational" row of polities; the containment edge is
the missing link between it and the polity it belongs to
(whep-polities#649, closing whep#51).
Format
A tibble with one row per containment edge. Columns:
member_code:polity_codeof the contained polity.container_code:polity_codeof the containing polity.start_year,end_year: Validity interval of the edge itself, on the same convention as polities:start_yearis inclusive andend_yearis exclusive at a succession (a later edge for the same member takes over fromend_year) and inclusive at the open end (an edge nothing succeeds still covers its own terminal year). The interval belongs to the edge, not to either endpoint polity:JPN-23-1871-2025is one member polity spanning 1871-2025, but four separate edges route it throughJPN-1800-1895,JPN-1895-1945,JPN-1945-1952andJPN-1952-2025as Japan's own periodization changes underneath it.basis: Free-text description of what the containment relationship represents (a historical territory, a reporting convention, ...).
Details
The map is authored and gated in whep-polities; this package embeds a
copy rather than deciding containment itself, on the same grounds as
polity_label_aliases and polity_area_crosswalk.