From 616e4ee9884274c8a6a40d65977c3fc9bb324612 Mon Sep 17 00:00:00 2001 From: Mikkeli Date: Thu, 10 Sep 2026 01:47:53 +0900 Subject: [PATCH] 274-dev: correct watercourse count after the two exclusions Co-Authored-By: Claude Opus 5 Claude-Session: https://claude.ai/code/session_01S6MpcBisZYhX45oDGRRJoz --- wip/274-dev.md | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/wip/274-dev.md b/wip/274-dev.md index 90f25f7..7ed0495 100644 --- a/wip/274-dev.md +++ b/wip/274-dev.md @@ -102,9 +102,9 @@ size OSM splits into separate ways. Cross-checked against the 国土数値情報 河川データセット (W05) via the Geoshape repository at 国立情報学研究所 — all 561 named rivers of the 石狩川, 鵡川 and 沙流川 systems, since named -rivers each carry their own 河川コード and are not in the 「その他」 group. 34 distinct -names; 31 appear in both W05 and OpenStreetMap, and of those all but one agree on -position to within 110 m. +rivers each carry their own 河川コード and are not in the 「その他」 group. The sweep found +34 names; two were dropped by the author (below), leaving **32**. Of those, 31 appear in +both W05 and OpenStreetMap, and all but one agree on position to within 110 m. Offset is closest approach; under ~30 m means the road crosses it.