zwitschi
737e16e7db
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.
31 lines
2.1 KiB
Markdown
31 lines
2.1 KiB
Markdown
# OSM extract — Hollywood Blvd block, 2026-11-06
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| Field | Value |
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| --- | --- |
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| Source | OpenStreetMap API v0.6, `map` endpoint (`api.openstreetmap.org`) |
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| Extract date | 2026-11-06 21:45 CET |
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| URL | `https://api.openstreetmap.org/api/0.6/map?bbox=-118.3435,34.1000,-118.3365,34.1030` |
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| Data timestamp | not reported by this endpoint; the response carries no replication timestamp, so the extract date is the only date available |
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| Bounds | west −118.3435, south 34.1000, east −118.3365, north 34.1030 (WGS84) |
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| Extent | ≈ 640 m east–west × 333 m north–south |
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| 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 |
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| File | `Geo/raw/osm-api-map-2026-11-06.osm` (1.66 MB, XML) |
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| SHA-256 | `64615f0db4715c2d50860052e300930c201bbb87e183a1de5985f2d99d83f4e4` |
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| Licence | ODbL 1.0 — "© OpenStreetMap contributors", <https://www.openstreetmap.org/copyright> |
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| CRS in source | EPSG:4326 (WGS84 lat/lon) |
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| Local CRS and origin | not yet chosen. Candidate EPSG:26911 (NAD83 / UTM zone 11N); origin to be recorded when the QGIS step runs |
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## Why this bbox
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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.
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## Coverage limits
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- Building interiors, heights above the tagged value, and pavement widths are not in this data. Treat all of it as layout.
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- 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.
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- The extract has no elevation. The DEM decision is still open; see `ROADMAP.md`.
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## Attribution obligation
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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.
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