Poland: BDOT10k OT_BUBD_A — building footprints #105

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opened 2026-08-12 21:41:00 +00:00 by art · 1 comment

art commented

2026-08-12 21:41:00 +00:00

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Scope: Poland's buildings from BDOT10k OT_BUBD_A (budynek).

The source (2021 schema, Dz.U. 2021 poz. 1412): building polygons with funkcjaOgolnaBudynku / funkcjaSzczegolowaBudynku (BUBD01–21: residential, offices, retail, industrial, farm, transport, religious, heritage…). Not among the 17 fetched classes. BDOT10k holds ~60M objects in total (GUGiK's published figure); buildings are the single most numerous class — this is the biggest single class addition the fetch could make. GUGiK publishes per-województwo building statistics (StatystykiBudynkow WFS) that can sanity-check counts after import.

First steps:

Widen BDOT10K_CLASSES by BUBD_A (the fetch marker re-pull rule, R9 — the county zips are deleted after extraction, so the set widens by re-pulling all 380 counties, ~15 GB).
Record per-class GB/rows in the catalogue (R5).
Decide the layer shape against Iceland's buildings (a point layer): polygon footprints vs point collapse; check the contract in conf/ismap.yaml first (R132).

From #84 — catalogue line in docs/country-poland.md.

Scope: Poland's `buildings` from BDOT10k **OT_BUBD_A** (budynek). The source (2021 schema, Dz.U. 2021 poz. 1412): building polygons with `funkcjaOgolnaBudynku` / `funkcjaSzczegolowaBudynku` (BUBD01–21: residential, offices, retail, industrial, farm, transport, religious, heritage…). Not among the 17 fetched classes. BDOT10k holds ~60M objects in total (GUGiK's published figure); buildings are the single most numerous class — this is the biggest single class addition the fetch could make. GUGiK publishes per-województwo building statistics (`StatystykiBudynkow` WFS) that can sanity-check counts after import. First steps: 1. Widen `BDOT10K_CLASSES` by `BUBD_A` (the fetch marker re-pull rule, R9 — the county zips are deleted after extraction, so the set widens by re-pulling all 380 counties, ~15 GB). 2. Record per-class GB/rows in the catalogue (R5). 3. Decide the layer shape against Iceland's `buildings` (a point layer): polygon footprints vs point collapse; check the contract in conf/ismap.yaml first (R132). From #84 — catalogue line in docs/country-poland.md.

art referenced this issue

2026-08-12 21:44:05 +00:00

#84: R5/R13 catalogue — contours, peaks, buildings and airports now have a line per country, and ten import issues are filed #111

art referenced this issue

2026-08-17 07:53:53 +00:00

Shared buildings layer — fold is_buildings in (se #102 / pl #105 / fi #109 land into it) #150