Roster now carries, for every entry: kana and romaji readings, the
administrative address with its reading, and the 大字 it sits in.
- Kana/Romaji columns prefilled from OSM name:ja-Hira / name:ja-Latn
where they exist (42 of 170); the rest are blank rather than guessed,
pending the plaque readings.
- Address and Address kana for all 170, from 国土地理院 reverse geocoding
joined to GSI muni.js and 日本郵便 郵便番号データ. Confirms 千栄=ちさか
and 穂別長和=ほべつおさわ.
- District transect: the route sampled every 250 m gives 23 大字 bands
with entry and exit kilometres. R274 does not pass through 字ニニウ at
all — it runs 穂別福山 → 字中央 → 字日高, and both municipal boundaries
fall inside tunnels (穂高 and 日高).
- Fixes a real bug: duplicate-named features shared one set of
coordinates, so both セイコーマート pointed at the same spot 50 km
apart. 12 coordinate cells were wrong.
- 沙流川 added at 105.67 km, where the road joins its valley at 右左府,
rather than at its nearest point past the range end.
- Kind labels normalised to English throughout.
CSV and GeoJSON regenerated from the Markdown, which is now the source
of truth. GeoJSON also carries the district bands as geometryless
features.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01S6MpcBisZYhX45oDGRRJoz
Replaces the three separate tables (structures / watercourses / PoI) with
one table in road order, and adds a Name column: the proper noun with
generic tails stripped (橋, 川, トンネル, 覆道, 郵便局, 発電所, 町, 丁目),
Ainu size qualifiers stripped (パンケ, ペンケ, ポン), and variants aliased
(十三哩→十三里, 滝ノ上→滝の上, 浪ノ沢→浪の沢, 能見→熊見, クルキ→久留喜,
三川 compounds folded together).
Objects are kept in full alongside, with kilometre, offset, kind, WGS84
coordinates and the register attributes.
188 entries, 119 distinct names, 15 names carried by three or more objects.
Adds machine-readable copies for later visualisation work:
274-lookup.csv and 274-lookup.geojson (route line plus one point per
entry, all properties carried through).
Name extraction is mechanical and meant to be corrected by hand.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01S6MpcBisZYhX45oDGRRJoz
mikkeli