manjunath
578ebdc030
reconcile voice outlines with main f13c60c, retaining German/Japanese,
Operator HUD retirement and Context/Radio cleanup, named-building
containment, courtyard-hole, non-Latin identity, attribution, cancellation
and antimeridian repairs
keep outline callouts above the open voice preview when an above-panel
slot fits without colliding with another callout,
and clip the compact dock location label on narrow screens
US Census Bureau places pack
City, town, village and census designated place (CDP) outlines for area
annotations ("outline Austin", "outline Springfield, Illinois"), read by
src/data/placeBoundaries.js. One file per state or territory, fetched when
an ask needs that state (files under 4 KB are inlined into the app bundle by
the bundler).
| File | Contents |
|---|---|
index.json |
source, schema, curation, and each state's code, FIPS code, name, place count and box |
<ST>.json |
the places of one state (USPS code) |
files.js |
every file's URL, so bundlers emit them (generated) |
Source: U.S. Census Bureau cartographic boundary files,
https://www2.census.gov/geo/tiger/GENZ2025/shp/cb_2025_us_place_500k.zip
(SHA-256 ce0e4019ecd4123d03d53aaa936eed0459b82e3e14b89a3dcd4d5e8b3308627d).
32,629 places in the 50 states, the District of Columbia, Puerto Rico and the
Island Areas: 19,733 incorporated places and 12,896 CDPs.
License: public domain — a work of the U.S. Government (17 U.S.C. § 105). See DATA_SOURCES.md.
Regenerate (requires Python with shapely==2.1.2 on GEOS 3.13.1):
node scripts/build-census-places.mjs [--python <exe>] downloads the pinned
zip (to the system temp directory, or --cache <dir>), checks its SHA-256,
rewrites the pack and runs scripts/pack_geometry.py repair census; the
result is the same byte for byte. python scripts/pack_geometry.py check census checks the shipped pack.
Schema: each state file has st, state, fips and features[] with
geoid, name (NAME), alt[] (everyday names of consolidated
governments, e.g. "Nashville"), full (NAMELSAD), lsad (city, town,
village, CDP, …), cdp (census designated place), d (decimals when not
4) and polygons. polygons is a list of parts, largest first, each
[outer, ...holes]; every ring is open and stored as integers in units of
10^-4 degrees (10^-d when present), the first vertex absolute and each
later one as a [dLon, dLat] delta. An optional label: [lon, lat] in degrees
supplies a verified filled anchor when the outer-ring centroid is outside the
place or inside a hole. Already-filled anchors and polygon coordinates are
preserved. The final repair pass checks labels against degree-decoded geometry;
interior labels are not rounded back onto the vertex grid.
Curation: the county pack's simplification (see
../us_census_counties/README.md), keeping triangles. A place whose
simplified rings would cross is simplified again at half the tolerance, then
at 5 or 6 decimals. Every place is then a valid MultiPolygon under GEOS in
the pack's integer units (the rest are repaired and snapped back to the
grid), with its largest part first.