Files
gig-line/Geo/manifests/2026-11-06-osm-api-map.md
T
zwitschi 737e16e7db geo: add block extract, boundary verification, and the carried-over reference set
Inventory the sibling security-game project and copy only the evidence: nine
licensed photos with their sidecar provenance into Art/reference/hollywood/,
now LFS-tracked. Add the block-wide OSM extract with a manifest, resolve the
demo bounds (Orange Dr -118.341434 .. Highland Ave -118.338718, 279 m) and the
south/north building sets, and add Geo/scripts/block_report.py to reproduce it.

The sibling docs place the El Capitan Theatre west of 6840; OSM geometry and
the house numbering put it east. Recorded with the two unresolved measurement
conflicts rather than averaged.
2026-11-06 21:47:29 +01:00

2.1 KiB
Raw Blame History

OSM extract — Hollywood Blvd block, 2026-11-06

Field Value
Source OpenStreetMap API v0.6, map endpoint (api.openstreetmap.org)
Extract date 2026-11-06 21:45 CET
URL https://api.openstreetmap.org/api/0.6/map?bbox=-118.3435,34.1000,-118.3365,34.1030
Data timestamp not reported by this endpoint; the response carries no replication timestamp, so the extract date is the only date available
Bounds west −118.3435, south 34.1000, east −118.3365, north 34.1030 (WGS84)
Extent ≈ 640 m east–west × 333 m north–south
Contents 3565 nodes, 350 ways; streets: Hollywood Blvd (secondary), North Highland Ave (primary), North Orange Dr, North McCadden Pl, North Sycamore Ave, Hawthorn Ave, Walk of Fame footway, service alleys
File Geo/raw/osm-api-map-2026-11-06.osm (1.66 MB, XML)
SHA-256 64615f0db4715c2d50860052e300930c201bbb87e183a1de5985f2d99d83f4e4
Licence ODbL 1.0 — "© OpenStreetMap contributors", https://www.openstreetmap.org/copyright
CRS in source EPSG:4326 (WGS84 lat/lon)
Local CRS and origin not yet chosen. Candidate EPSG:26911 (NAD83 / UTM zone 11N); origin to be recorded when the QGIS step runs

Why this bbox

It contains the demo block from Highland Avenue to Orange Drive plus the whole north side within 50 m, with enough margin to include the streets' intersection nodes and the alley network behind the south frontage. It deliberately excludes the rest of the boulevard: larger extracts cost processing time and dilute the ODbL review.

Coverage limits

  • Building interiors, heights above the tagged value, and pavement widths are not in this data. Treat all of it as layout.
  • The height tag exists on some buildings and is absent on others (6838 has only building:levels, 6922 has neither). A missing tag is not a zero height.
  • The extract has no elevation. The DEM decision is still open; see ROADMAP.md.

Attribution obligation

Any distributed derived output keeps "© OpenStreetMap contributors" and the licence link. The 0.1.0 release check requires the attribution to be visible in the shipped build.