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"diagnostic_note": "Windows <=3 m are at raster-noise scale (1-sigma raster noise alone is roughly +/-7 pp at 2 m and +/-5 pp at 3 m on a 1 m DTM). Diagnostic use only: never a headline or ranking value.", "quality_summary": { "texture_suppression": { "masked_fraction": 0.038, "windows_resited": [ 2.0, 3.0, 5.0, 10.0, 20.0, 25.0 ], "windows_unresolved": [], "minima_resited": [], "minima_unresolved": [] }, "texture_windows": { "rounds": 1, "windows_masked": [ { "window_m": 25.0, "start_m": 202.0, "end_m": 227.0, "raw_pct": 24.42, "reason": "hump" }, { "window_m": 20.0, "start_m": 206.0, "end_m": 226.0, "raw_pct": 25.38, "reason": "hump" } ], "advisory": [], "unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.065, "obstruction_max_height_m": 9.58, "flagged_windows_m": [ 2, 3, 5 ] }, "excluded_ranges_m": [ [ 200.0, 229.0 ] ], "review": [], "extent": [ "may_start_earlier", "may_continue_beyond_end" ] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "368c60c29e47d4b421849c953b172a04f7694146", "code_git_dirty": "false", "analysis_version": "0.1.0", "analysis_config_digest": "sha256:8c94015b54267da4", "python": "3.14.4", "numpy": "2.5.3", "rasterio": "1.5.2", "pyproj": "3.8.0", "laspy": "2.7.0", "shapely": "2.1.2", "pyosmium": "4.3.1", "libosmium": "2.23.1", "gdal": "3.12.2", "proj": "9.8.1", "run_id": "no-b18", "road_pbf": "no-b18-block-batch-no-b18.osm.pbf", "region_key": "norway", "crs": "EPSG:25833", "elevation_provider_key": "nhm-no", "tile_index": "nhm-window", "authority": "nvdb", "registry_pbf": "norway-2026-10-01.osm.pbf" }, "sample_interval_m": 1.0, "interpolation": "bilinear", "smoothing": "none", "gradient_windows_m": [ 5.0, 10.0, 20.0, 25.0, 50.0, 100.0 ], "diagnostic_windows_m": [ 2.0, 3.0 ], "scale_correction": "point", "scale_correction_crs": "EPSG:25833", "elevation_crs": "EPSG:25833", "elevation_resolution_m": 1.0, "elevation_tiles": [ "data/cache/no/nhm-no_dtm_E614000-N7643000_1m.tif" ], "calculated_at": "2026-10-03T23:27:40+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/no-b18-block-batch-no-b18.osm.pbf", "osm_snapshot": "", "run_id": "no-b18", "elevation_provider": "Kartverket NHM DTM 1 m (laser-covered ground only)", "elevation_licence": "CC BY 4.0 \u2014 \u00a9 Kartverket (https://www.kartverket.no/api-og-data/vilkar-for-bruk)", "elevation_dataset": "Nasjonal h\u00f8ydemodell (NHM) DTM, 1 m, EPSG:25833, NN2000 (Kartverket), served by the hoydedata.no ImageServer; ground without a laser project is a coarser resampled product and is never measured", "elevation_vertical_datum": "NN2000", "elevation_tile_ids": [ "E614000-N7643000" ], "elevation_blocks": [ "nhm-dtm-1m" ], "nhm_laser_projects": [ { "last_flight_date": "2019-09-09", "name": "NDH Salangen 2pkt 2019", "points_per_m2": 2, "resolution_m": 0.5, "season": "", "year": 2019 }, { "last_flight_date": "2012-10-01", "name": "Troms Midt 2012", "points_per_m2": 2, "resolution_m": 0.5, "season": "", "year": 2012 } ], "nhm_last_flight_date": "2019-09-09", "nhm_retrieved_at": "2026-10-03T21:05:14Z", "nhm_note": "laser projects overlapping the route's cells; the mosaic draws on them by its own priority and which project supplied which pixel is not recorded", "climb_origin": "discovered", "seam_filled_samples": { "count": 0, "distances_m": [] }, "seam_filled_in_maximum": false, "structure_own_ways": 8, "tunnel_check": "osm tunnel=* ways on 8 own way(s)", "tunnel_ranges_m": [], "underground_fraction": 0.0, "carriageway": { "stations": 38, "stations_resolved": 38, "width_median_m": 4.75, "width_p10_m": 3.17, "width_min_m": 2.5, "width_max_m": 11.75, "bounded_share": 0.053, "unbounded_share": 0.947, "confidence_median": 0.0, "width_median_bounded_m": 5.12, "window_m": [ 742.0, 767.0 ], "width_at_max25_m": 3.75, "window_stations": 7, "single_track": false, "single_track_rule": "PROVISIONAL (2026-09-15): width_p10_m <= 3.0 m with bounded_share >= 0.6; recorded, not a rule", "status": "ok", "source": "dtm", "station_m": 25.0, "window_station_m": 5.0, "halfwidth_m": 6.0, "step_m": 0.25, "level_tol_m": 0.12, "break_min_m": 0.3, "stations_failed": 0, "hedge_to_hedge": { "stations": 38, "stations_resolved": 38, "width_median_m": 7.38, "width_p10_m": 2.25, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.711, "unbounded_share": 0.289, "confidence_median": 1.0, "width_median_bounded_m": 7.0, "window_m": [ 742.0, 767.0 ], "width_at_max25_m": 7.0, "window_stations": 7, "status": "ok", "source": "dsm", "station_m": 25.0, "window_station_m": 5.0, "halfwidth_m": 6.0, "step_m": 0.25, "level_tol_m": 0.5, "break_min_m": 0.3, "stations_failed": 0 } }, "naming_note": "birth-named at adoption (named from its own OSM street ('Holtveien'), anchored to 'Sj\u00f8vegan' (Peter, 2026-09-30))", "license": "ODbL-1.0", "license_url": "https://howsteep.org/licensing" }, "area": { "place": "Salangen", "county": "Troms", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }