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Fabio 1beeaab2db Graph: national county↔district↔legislator authority layer

The first edges in the repo. Every US county now links to the districts it
sits in, weighted by area overlap, and every legislator links to the district
they represent — county → district → representative, traversable.

Data (PostGIS, no Atlas dependency — computed directly from geometry):
- data/county_district_edges.jsonl — 16,328 weighted edges. area_weight =
  ST_Area(ST_Intersection(county, district))/ST_Area(county) over ST_MakeValid
  Census TIGER 2024 geometries, overlaps <0.5% dropped. Uses area-intersection,
  NOT centroid-in-polygon, so urban districts that carve through counties
  (e.g. GA CD-5 / Atlanta across Clayton+DeKalb+Fulton) are captured, not
  silently dropped. Per-county weights sum to ~1.0 per district type.

build.py:
- ~6,896 new district nodes: 435 CD (ACS demographics where available; sparse
  for the 8 states missing from acs_cd) + 4,927 state-house + 1,897 state-senate
  (geometry-only). GEOID/number-keyed, stable.
- county index.md gains a `districts:` block (frontmatter) + a ## Districts
  section (body links, so link-integrity checks them).
- legislators + US House members gain `represents:` pointing at their district
  node; edge stored once on the person, inverse left to the view.
- schemas/jurisdiction: classification enum + chamber/districts fields.

Honest gaps (logged, not hidden): ID + NH have no state-house geometry, so
their house districts get nodes (represents resolves) but no county edges;
CD nodes for acs_cd-missing states are demographically sparse.

Deterministic (byte-identical rebuild); validate.py passes 26,617 records,
link-integrity clean (every district/represents link resolves).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-07-04 22:28:08 -04:00

3.4 KiB

Raw Blame History

type, title, classification, fips, state, demographics, districts, sources, confidence, tags, timestamp

type

title

classification

fips

state

demographics

districts

sources

confidence

tags

timestamp

Jurisdiction

Rapides Parish, LA

county

22079

population	population_under_18	population_18_64	population_65_plus	median_household_income	poverty_rate	homeownership_rate	unemployment_rate	median_home_value	gini_index	vacancy_rate	race_white	race_black	race_asian	race_native	hispanic	bachelors_plus
127527	31881	73960	21686	54967	19.9	64.83	5.15	181100	0.4801	16.42	77228	39248	1433	667	5386	27300

to	rel	area_weight
us/states/la/districts/04	in-district	0.5143

to	rel	area_weight
us/states/la/districts/06	in-district	0.4848

to	rel	area_weight
us/states/la/districts/senate/30	in-district	0.2935

to	rel	area_weight
us/states/la/districts/senate/32	in-district	0.207

to	rel	area_weight
us/states/la/districts/senate/29	in-district	0.1794

to	rel	area_weight
us/states/la/districts/senate/31	in-district	0.1678

to	rel	area_weight
us/states/la/districts/senate/28	in-district	0.1048

to	rel	area_weight
us/states/la/districts/senate/35	in-district	0.0476

to	rel	area_weight
us/states/la/districts/house/38	in-district	0.4209

to	rel	area_weight
us/states/la/districts/house/25	in-district	0.2944

to	rel	area_weight
us/states/la/districts/house/27	in-district	0.2504

to	rel	area_weight
us/states/la/districts/house/26	in-district	0.0341

field	source
demographics	Census ACS 2023

field	source
districts	PostGIS area-intersection over Census TIGER 2024 boundaries

official

jurisdiction

county

2026-07-03

Rapides Parish, LA

County jurisdiction — 2 officeholders mapped.

Demographics (ACS 2023)

Measure	Value
Population	127527
Under 18	31881
18–64	73960
65+	21686
Median household income	54967
Poverty rate	19.9
Homeownership rate	64.83
Unemployment rate	5.15
Median home value	181100
Gini index	0.4801
Vacancy rate	16.42
White	77228
Black	39248
Asian	1433
Native	667
Hispanic/Latino	5386
Bachelor's or higher	27300

Districts

LA-04 — 51% (congressional)
LA-06 — 48% (congressional)
LA Senate District 30 — 29% (state senate)
LA Senate District 32 — 21% (state senate)
LA Senate District 29 — 18% (state senate)
LA Senate District 31 — 17% (state senate)
LA Senate District 28 — 10% (state senate)
LA Senate District 35 — 5% (state senate)
LA House District 38 — 42% (state house)
LA House District 25 — 29% (state house)
LA House District 27 — 25% (state house)
LA House District 26 — 3% (state house)

Source

demographics: Census ACS 2023
districts: PostGIS area-intersection over Census TIGER 2024 boundaries

3.4 KiB Raw Blame History Unescape Escape

Rapides Parish, LA

Demographics (ACS 2023)

Districts

Source

3.4 KiB

Raw Blame History