From aa745bcee5c4f76353c9426fb9055cb5737f0fc0 Mon Sep 17 00:00:00 2001 From: Trygve Hemminghytt <274629477+trygvehhh@users.noreply.github.com> Date: Wed, 7 Oct 2026 04:02:05 +0200 Subject: [PATCH] data: refresh Norway datacenters from Geofabrik extract Add a maintainer script that merges a pinned, MD5-verified Geofabrik Norway extract (osmium tags-filter telecom/building=data_center) into the bundled datacenter layer. Only features inside the Geofabrik Norway boundary are touched; unchanged features keep their original line. norway-261005 (OSM 2026-10-05) adds Troll Housing (w1551029155) and updates tags on four existing features. Provenance is recorded in the dataset README and the bundled count moves from 4,351 to 4,352. Co-Authored-By: Claude Opus 5.5 --- CHANGELOG.md | 6 + DATA_SOURCES.md | 2 +- README.md | 2 +- docs/INFRASTRUCTURE-LAYERS.md | 2 +- scripts/build-datacenters-norway.py | 196 ++++++++++++++++++ src/data/infrastructure.test.mjs | 2 +- src/data/local_data/datacenters/README.md | 16 +- .../datacenters/datacenters.geojsonl | 9 +- 8 files changed, 226 insertions(+), 9 deletions(-) create mode 100644 scripts/build-datacenters-norway.py diff --git a/CHANGELOG.md b/CHANGELOG.md index b433f8c06..031e36751 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -2,6 +2,12 @@ ## [Unreleased] +- Refresh Norway's datacenters from a Geofabrik OpenStreetMap extract + (2026-10-05). Troll Housing joins the layer (4,352 features) and four + Norwegian sites pick up current OSM tags; no site moved or was removed. + `scripts/build-datacenters-norway.py` reproduces or `--verify`s the merge, + touching only features inside Geofabrik's Norway boundary, and the dataset + README records the extract, checksum and filter. - Add Norway's road cameras from Statens vegvesen as a CCTV pack. The camera list is one keyless GeoJSON request to the agency's OGC API view of its DATEX 3.1 CCTV table, so no DATEX account is needed. Every working camera diff --git a/DATA_SOURCES.md b/DATA_SOURCES.md index 734e35a69..b4f0dc0cc 100644 --- a/DATA_SOURCES.md +++ b/DATA_SOURCES.md @@ -112,7 +112,7 @@ The [Bhote Koshi event pack](public/events/bhote-koshi-2026/README.md), under `p | Dataset | Folder | License | Commercial use? | Attribution | | --------------------------------------------------------------------------- | --------------------------------- | --------------------------------------------------------------------------------------------------------- | ------------------------------------------------ | --------------------------------------------------------------------------- | -| **Datacenters** (4,351) | `datacenters/` | **ODbL 1.0** (OpenStreetMap extract) | ✅ (attribution + share-alike on data) | © OpenStreetMap contributors (shared credit) | +| **Datacenters** (4,352) | `datacenters/` | **ODbL 1.0** (OpenStreetMap extract) | ✅ (attribution + share-alike on data) | © OpenStreetMap contributors (shared credit) | | **Dams** (704) | `dams/` | **ODbL 1.0** (OpenInfraMap / OSM extract) | ✅ (attribution + share-alike on data) | © OpenStreetMap contributors (shared credit) + Open Infrastructure Map | | **Military area names** (36,466) | `osm_military_names/` | **ODbL 1.0** (OpenStreetMap, via Overture Maps) | ✅ (attribution + share-alike on data) | © OpenStreetMap contributors (shared credit) + Overture Maps Foundation | | **TeleGeography Submarine Cable Map** (712 cables + 1,917 landing points) | `telegeography_submarine_cables/` | **CC BY-NC-SA 3.0** | ❌ **NonCommercial — remove for commercial use** | "© TeleGeography — submarinecablemap.com" | diff --git a/README.md b/README.md index 724ea18cb..0500645af 100644 --- a/README.md +++ b/README.md @@ -323,7 +323,7 @@ In the app, **Data Layers** groups them as Movement, Cameras, Infrastructure, Ev _The Space Missions layer replaying a Falcon 9 ascent — labeled `RECONSTRUCTED ESTIMATE`, scrubbable 0.25×–4×._ -**Also on the globe:** neighborhood overlays · an optional cockpit WX cloud effect. **Bundled static infrastructure:** Datacenters (4,351), Dams (704), and Submarine Cables (712). +**Also on the globe:** neighborhood overlays · an optional cockpit WX cloud effect. **Bundled static infrastructure:** Datacenters (4,352), Dams (704), and Submarine Cables (712). ![Diving into the Bahamas and revealing labeled submarine cable routes beneath the globe](docs/media/09-undersea-cables.gif) diff --git a/docs/INFRASTRUCTURE-LAYERS.md b/docs/INFRASTRUCTURE-LAYERS.md index 76567e605..1166a9e69 100644 --- a/docs/INFRASTRUCTURE-LAYERS.md +++ b/docs/INFRASTRUCTURE-LAYERS.md @@ -58,6 +58,6 @@ factory and supplies its existing functions. Other consumers should use the pack exports, which do not import standalone application globals. Dataset files and source/license notices remain under `src/data/local_data/`. -Their input counts are 4,351 datacenter features and 704 dam features. Cesium may +Their input counts are 4,352 datacenter features and 704 dam features. Cesium may expand multipart geometries into multiple entities; entity and stem counts are different measurements. This change does not refresh or relicense the datasets. diff --git a/scripts/build-datacenters-norway.py b/scripts/build-datacenters-norway.py new file mode 100644 index 000000000..01a891a8b --- /dev/null +++ b/scripts/build-datacenters-norway.py @@ -0,0 +1,196 @@ +#!/usr/bin/env python3 +"""Maintainer-only Norway refresh of the bundled datacenter extract (osmium-tool). + +Downloads a pinned Geofabrik Norway extract, verifies its MD5, filters +telecom=data_center / building=data_center with osmium, and merges the result +into datacenters.geojsonl: features inside the Geofabrik Norway boundary are +added, updated or removed; every other line is kept byte-for-byte. +""" +import argparse +import hashlib +import json +import math +from pathlib import Path +import shutil +import subprocess +import urllib.request + +ROOT = Path(__file__).resolve().parent.parent +EXTRACT = 'norway-261005' +GEOFABRIK = 'https://download.geofabrik.de/europe/' +DATASET = ROOT / 'src/data/local_data/datacenters/datacenters.geojsonl' +CONTACT_TAGS = {'email', 'phone', 'fax', 'mobile', 'whatsapp', 'contact:email', 'contact:phone', + 'contact:fax', 'contact:mobile', 'contact:whatsapp'} +SAME_GEOMETRY_METERS = 0.05 + + +def fetch(url, target): + if not target.exists(): + with urllib.request.urlopen(url) as response, open(str(target) + '.part', 'wb') as out: + shutil.copyfileobj(response, out) + Path(str(target) + '.part').rename(target) + return target + + +def md5(path): + digest = hashlib.md5() + with open(path, 'rb') as handle: + for block in iter(lambda: handle.read(1 << 20), b''): + digest.update(block) + return digest.hexdigest() + + +def read_poly(path): + """Geofabrik .poly -> list of (ring, is_hole).""" + rings, ring, hole = [], None, False + for raw in path.read_text().splitlines()[1:]: + line = raw.strip() + if ring is None: + if line and line != 'END': + ring, hole = [], line.startswith('!') + elif line == 'END': + rings.append((ring, hole)) + ring = None + elif line: + lon, lat = (float(v) for v in line.split()) + ring.append((lon, lat)) + return rings + + +def inside(rings, lon, lat): + def in_ring(ring): + hit = False + for (x1, y1), (x2, y2) in zip(ring, ring[1:] + ring[:1]): + if (y1 > lat) != (y2 > lat) and lon < x1 + (lat - y1) * (x2 - x1) / (y2 - y1): + hit = not hit + return hit + return any(in_ring(r) for r, h in rings if not h) and not any(in_ring(r) for r, h in rings if h) + + +def points(coordinates): + if isinstance(coordinates[0], (int, float)): + return [coordinates] + return [p for part in coordinates for p in points(part)] + + +def osm_key(feature): + osm_id = feature['properties']['osm_id'] + if osm_id < 0: + return 'r%d' % -osm_id + return ('n' if feature['geometry']['type'] == 'Point' else 'w') + str(osm_id) + + +def export(osmium, pbf, cache): + filtered = cache / (EXTRACT + '-datacenters.osm.pbf') + exported = cache / (EXTRACT + '-datacenters.geojsonseq') + subprocess.run([osmium, 'tags-filter', '-O', '-o', str(filtered), str(pbf), + 'nwr/telecom=data_center', 'nwr/building=data_center'], check=True) + subprocess.run([osmium, 'export', '-O', '-f', 'geojsonseq', '--add-unique-id=type_id', + '-o', str(exported), str(filtered)], check=True) + fresh = {} + for line in exported.read_text().splitlines(): + line = line.lstrip('\x1e').strip() + if not line: + continue + feature = json.loads(line) + tags = {k: v for k, v in feature['properties'].items() if k not in CONTACT_TAGS} + if tags.get('telecom') != 'data_center' and tags.get('building') != 'data_center': + continue # untagged member ways exported only for geometry + key = feature['id'] + geometry = feature['geometry'] + if key[0] == 'a': # osmium area id: way * 2 or relation * 2 + 1 + number = int(key[1:]) + key = ('w%d' % (number // 2)) if number % 2 == 0 else ('r%d' % (number // 2)) + if key[0] == 'r': + tags = {**tags, 'type': 'multipolygon'} + if geometry['type'] == 'MultiPolygon' and len(geometry['coordinates']) == 1: + geometry = {'type': 'Polygon', 'coordinates': geometry['coordinates'][0]} + elif key in fresh or geometry['type'] == 'LineString': + continue # closed ways are taken from their area export + fresh[key] = {'geometry': geometry, 'tags': tags} + return fresh + + +def same_geometry(old, new): + """Same type and vertex set within tolerance; ring start and winding may differ.""" + if old['type'] != new['type']: + return False + a, b = points(old['coordinates']), points(new['coordinates']) + if len(a) != len(b): + return False + + def meters(p, q): + dx = (p[0] - q[0]) * 111320 * math.cos(math.radians(p[1])) + return math.hypot(dx, (p[1] - q[1]) * 110540) + return all(min(meters(p, q) for q in b) <= SAME_GEOMETRY_METERS for p in a) and \ + all(min(meters(q, p) for p in a) <= SAME_GEOMETRY_METERS for q in b) + + +def feature_line(key, sequence, fresh): + osm_id = int(key[1:]) * (-1 if key[0] == 'r' else 1) + feature = {'id': osm_id, 'type': 'Feature', 'geometry': fresh['geometry'], + 'properties': {'id': sequence, 'tags': fresh['tags'], 'type': 'data_center', + 'osm_id': osm_id}} + return json.dumps(feature, separators=(',', ':'), ensure_ascii=False) + + +def merge(lines, fresh, rings): + out, seen, sequence = [], set(), 0 + report = {'kept': 0, 'updated': [], 'removed': [], 'added': []} + for line in lines: + feature = json.loads(line) + sequence = max(sequence, feature['properties']['id']) + key = osm_key(feature) + if key in fresh: + seen.add(key) + old_tags = feature['properties']['tags'] + if old_tags == fresh[key]['tags'] and same_geometry(feature['geometry'], fresh[key]['geometry']): + out.append(line) + report['kept'] += 1 + else: + out.append(feature_line(key, feature['properties']['id'], fresh[key])) + report['updated'].append(key) + continue + lon, lat = points(feature['geometry']['coordinates'])[0][:2] + if inside(rings, lon, lat): + report['removed'].append(key) + continue + out.append(line) + for key in sorted(set(fresh) - seen, key=lambda k: (k[0], int(k[1:]))): + sequence += 1 + out.append(feature_line(key, sequence, fresh[key])) + report['added'].append(key) + if len({osm_key(json.loads(line)) for line in out}) != len(out): + raise ValueError('Duplicate OSM identity') + return out, report + + +def main(): + parser = argparse.ArgumentParser(description=__doc__) + parser.add_argument('--cache', type=Path, required=True) + parser.add_argument('--osmium', default=shutil.which('osmium') or 'osmium') + parser.add_argument('--verify', action='store_true') + args = parser.parse_args() + args.cache.mkdir(parents=True, exist_ok=True) + pbf = fetch(GEOFABRIK + EXTRACT + '.osm.pbf', args.cache / (EXTRACT + '.osm.pbf')) + expected = fetch(GEOFABRIK + EXTRACT + '.osm.pbf.md5', + args.cache / (EXTRACT + '.osm.pbf.md5')).read_text().split()[0] + actual = md5(pbf) + if actual != expected: + raise RuntimeError('MD5 mismatch for %s: %s != %s' % (pbf.name, actual, expected)) + rings = read_poly(fetch(GEOFABRIK + 'norway.poly', args.cache / 'norway.poly')) + fresh = export(args.osmium, pbf, args.cache) + current = [line for line in DATASET.read_text().splitlines() if line.strip()] + merged, report = merge(current, fresh, rings) + payload = '\n'.join(merged) + '\n' + if args.verify: + if payload != DATASET.read_text(): + raise SystemExit('datacenters.geojsonl is not the %s merge' % EXTRACT) + else: + DATASET.write_text(payload) + print(json.dumps({'extract': EXTRACT, 'md5': actual, 'norway': len(fresh), + 'features': len(merged), **report})) + + +if __name__ == '__main__': + main() diff --git a/src/data/infrastructure.test.mjs b/src/data/infrastructure.test.mjs index 45fb3d317..c7f1b5a23 100644 --- a/src/data/infrastructure.test.mjs +++ b/src/data/infrastructure.test.mjs @@ -82,7 +82,7 @@ test('infrastructure factory preserves identity and creates independent state wi test('dataset URLs still name the complete bundled sources', () => { for (const [file, count] of [ - ['datacenters', 4351], + ['datacenters', 4352], ['dams', 704], ]) { const lines = readFileSync( diff --git a/src/data/local_data/datacenters/README.md b/src/data/local_data/datacenters/README.md index 454a15007..ef0720ae4 100644 --- a/src/data/local_data/datacenters/README.md +++ b/src/data/local_data/datacenters/README.md @@ -5,7 +5,7 @@ layer. - Source: OpenStreetMap contributors - License: Open Database License (ODbL) 1.0 -- Feature count: 4,351 +- Feature count: 4,352 - Runtime file: `datacenters.geojsonl` The public-release snapshot removes contact-oriented tags such as email, phone, @@ -16,3 +16,17 @@ ODbL 1.0 with the required OpenStreetMap attribution. The original extraction date and query were not recorded alongside this snapshot. Future refreshes should record both before replacing the file. + +## Norway refresh + +Features inside the Geofabrik Norway boundary (`norway.poly`, which includes +Svalbard) were refreshed separately, so this file mixes two vintages: Norway +reflects OSM as of the extract below, everything else the original snapshot. + +- Extract: Geofabrik `norway-261005.osm.pbf`, OSM data + 2026-10-05T20:21:35Z, MD5 `1d2cfdeb98980fce11b8891d0f9146c0` +- Filter: `osmium tags-filter nwr/telecom=data_center nwr/building=data_center` +- Contact tags are dropped as above; unchanged features keep their original + line, so geometry is only rewritten when tags or vertices actually changed. +- Rebuild or check: `python3 scripts/build-datacenters-norway.py --cache ` + (add `--verify` to check without writing; requires `osmium-tool`) diff --git a/src/data/local_data/datacenters/datacenters.geojsonl b/src/data/local_data/datacenters/datacenters.geojsonl index f7f5fc89f..b02bd57b3 100644 --- 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