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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

4.2 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

Orleans Parish, LA

county

22071

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
371853	73203	234733	63917	56631	22.6	51.18	7.53	315700	0.5527	20.32	115882	203053	10406	1060	30425	164748

to	rel	area_weight
us/states/la/districts/01	in-district	0.7508

to	rel	area_weight
us/states/la/districts/02	in-district	0.2478

to	rel	area_weight
us/states/la/districts/senate/1	in-district	0.3013

to	rel	area_weight
us/states/la/districts/senate/3	in-district	0.1091

to	rel	area_weight
us/states/la/districts/senate/4	in-district	0.0699

to	rel	area_weight
us/states/la/districts/senate/7	in-district	0.0586

to	rel	area_weight
us/states/la/districts/senate/5	in-district	0.0402

to	rel	area_weight
us/states/la/districts/senate/9	in-district	0.0103

to	rel	area_weight
us/states/la/districts/house/100	in-district	0.7525

to	rel	area_weight
us/states/la/districts/house/99	in-district	0.0646

to	rel	area_weight
us/states/la/districts/house/102	in-district	0.0541

to	rel	area_weight
us/states/la/districts/house/97	in-district	0.028

to	rel	area_weight
us/states/la/districts/house/94	in-district	0.0225

to	rel	area_weight
us/states/la/districts/house/93	in-district	0.0192

to	rel	area_weight
us/states/la/districts/house/98	in-district	0.0186

to	rel	area_weight
us/states/la/districts/house/23	in-district	0.0156

to	rel	area_weight
us/states/la/districts/house/91	in-district	0.0152

field	source
demographics	Census ACS 2023

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

official

jurisdiction

county

2026-07-03

Orleans Parish, LA

County jurisdiction — 1 officeholders mapped.

Demographics (ACS 2023)

Measure	Value
Population	371853
Under 18	73203
18–64	234733
65+	63917
Median household income	56631
Poverty rate	22.6
Homeownership rate	51.18
Unemployment rate	7.53
Median home value	315700
Gini index	0.5527
Vacancy rate	20.32
White	115882
Black	203053
Asian	10406
Native	1060
Hispanic/Latino	30425
Bachelor's or higher	164748

Districts

LA-01 — 75% (congressional)
LA-02 — 25% (congressional)
LA Senate District 1 — 30% (state senate)
LA Senate District 3 — 11% (state senate)
LA Senate District 4 — 7% (state senate)
LA Senate District 7 — 6% (state senate)
LA Senate District 5 — 4% (state senate)
LA Senate District 9 — 1% (state senate)
LA House District 100 — 75% (state house)
LA House District 99 — 6% (state house)
LA House District 102 — 5% (state house)
LA House District 97 — 3% (state house)
LA House District 94 — 2% (state house)
LA House District 93 — 2% (state house)
LA House District 98 — 2% (state house)
LA House District 23 — 2% (state house)
LA House District 91 — 2% (state house)

Source

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

4.2 KiB Raw Blame History Unescape Escape

Orleans Parish, LA

Demographics (ACS 2023)

Districts

Source

4.2 KiB

Raw Blame History