{ "ocl_version": "0.1.0", "name": "Chemin du Baou des Noirs", "slug": "chemin-du-baou-des-noirs-2", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 28.37084331399069, "diagnostic": true, "flags": [], "start_distance_m": 244.0, "end_distance_m": 246.0, "start_elevation_m": 387.9591850864795, "end_elevation_m": 388.52660195275934, "min_gradient_pct": -23.849127772200518 }, { "window_m": 3.0, "max_gradient_pct": 28.69633981299368, "diagnostic": true, "flags": [], "start_distance_m": 243.0, "end_distance_m": 246.0, "start_elevation_m": 387.6657117583695, "end_elevation_m": 388.52660195275934, "min_gradient_pct": -15.937565153008867 }, { "window_m": 5.0, "max_gradient_pct": 28.27009070704662, "diagnostic": false, "flags": [], "start_distance_m": 241.0, "end_distance_m": 246.0, "start_elevation_m": 387.113097417407, "end_elevation_m": 388.52660195275934, "min_gradient_pct": -10.063329586234886 }, { "window_m": 10.0, "max_gradient_pct": 27.117100387205255, "diagnostic": false, "flags": [], "start_distance_m": 241.0, "end_distance_m": 251.0, "start_elevation_m": 387.113097417407, "end_elevation_m": 389.82480745612753, "min_gradient_pct": -5.049275985601298 }, { "window_m": 20.0, "max_gradient_pct": 25.722204237798394, "diagnostic": false, "flags": [], "start_distance_m": 234.0, "end_distance_m": 254.0, "start_elevation_m": 385.457449836574, "end_elevation_m": 390.6018906841337, "min_gradient_pct": -3.7076038217932705 }, { "window_m": 25.0, "max_gradient_pct": 25.22237131572865, "diagnostic": false, "flags": [], "start_distance_m": 231.0, "end_distance_m": 256.0, "start_elevation_m": 384.7351436992932, "end_elevation_m": 391.04073652822535, "min_gradient_pct": -3.2875072857711984 }, { "window_m": 50.0, "max_gradient_pct": 24.494017446317912, "diagnostic": false, "flags": [], "start_distance_m": 203.0, "end_distance_m": 253.0, "start_elevation_m": 378.1137888457297, "end_elevation_m": 390.36079756888864, "min_gradient_pct": -2.4136817975504528 }, { "window_m": 100.0, "max_gradient_pct": 22.89226987729904, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 171.0, "end_distance_m": 271.0, "start_elevation_m": 370.729801336809, "end_elevation_m": 393.622071214108, "min_gradient_pct": -2.0717931934583476 } ], "shape": { "ascent_concentration": 0.62, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 135.0, "shape_class": "stepped" }, "length_m": 334.33198018097346, "start_elevation_m": 371.9040100195329, "end_elevation_m": 400.95398403073824, "endpoint_gain_m": 29.049974011205336, "overall_gradient_pct": 8.688960594042072, "accumulated_ascent_m": 32.78259409431746, "window_maxima": { "max_5m": { "gradient_pct": 28.27009070704662, "start_distance_m": 241.0, "end_distance_m": 246.0, "midpoint_distance_m": 243.5, "start_elevation_m": 387.113097417407, "end_elevation_m": 388.52660195275934, "start_xy": [ 1032460.8149150955, 6302041.127957019 ], "end_xy": [ 1032462.170526544, 6302045.940681569 ] }, "max_10m": { "gradient_pct": 27.117100387205255, "start_distance_m": 241.0, "end_distance_m": 251.0, "midpoint_distance_m": 246.0, "start_elevation_m": 387.113097417407, "end_elevation_m": 389.82480745612753, "start_xy": [ 1032460.8149150955, 6302041.127957019 ], "end_xy": [ 1032463.5261379926, 6302050.7534061195 ] }, "max_20m": { "gradient_pct": 25.722204237798394, "start_distance_m": 234.0, "end_distance_m": 254.0, "midpoint_distance_m": 244.0, "start_elevation_m": 385.457449836574, "end_elevation_m": 390.6018906841337, "start_xy": [ 1032458.9170590673, 6302034.390142648 ], "end_xy": [ 1032464.3395048617, 6302053.64104085 ] }, "max_25m": { "gradient_pct": 25.22237131572865, "start_distance_m": 231.0, "end_distance_m": 256.0, "midpoint_distance_m": 243.5, "start_elevation_m": 384.7351436992932, "end_elevation_m": 391.04073652822535, "start_xy": [ 1032458.1036921982, 6302031.502507918 ], "end_xy": [ 1032464.8817494413, 6302055.566130671 ] }, "max_50m": { "gradient_pct": 24.494017446317912, "start_distance_m": 203.0, "end_distance_m": 253.0, "midpoint_distance_m": 228.0, "start_elevation_m": 378.1137888457297, "end_elevation_m": 390.36079756888864, "start_xy": [ 1032450.6981468473, 6302004.510191046 ], "end_xy": [ 1032464.068382572, 6302052.67849594 ] }, "max_100m": { "gradient_pct": 22.89226987729904, "start_distance_m": 171.0, "end_distance_m": 271.0, "midpoint_distance_m": 221.0, "start_elevation_m": 370.729801336809, "end_elevation_m": 393.622071214108, "start_xy": [ 1032444.5984014865, 6301973.232758806 ], "end_xy": [ 1032473.3521103562, 6302067.597956861 ] } }, "window_minima": { "min_5m": { "gradient_pct": -10.063329586234886, "start_distance_m": 16.0, "end_distance_m": 21.0, "midpoint_distance_m": 18.5, "start_elevation_m": 371.65762107931505, "end_elevation_m": 371.1544546000033, "start_xy": [ 1032312.7417472566, 6301910.2809146345 ], "end_xy": [ 1032317.7376057743, 6301910.077450458 ] }, "min_10m": { "gradient_pct": -5.049275985601298, "start_distance_m": 16.0, "end_distance_m": 26.0, "midpoint_distance_m": 21.0, "start_elevation_m": 371.65762107931505, "end_elevation_m": 371.1526934807549, "start_xy": [ 1032312.7417472566, 6301910.2809146345 ], "end_xy": [ 1032322.6123412033, 6301910.893687531 ] }, "min_20m": { "gradient_pct": -3.7076038217932705, "start_distance_m": 0.0, "end_distance_m": 20.0, "midpoint_distance_m": 10.0, "start_elevation_m": 371.9040100195329, "end_elevation_m": 371.16248925517425, "start_xy": [ 1032296.755, 6301910.932 ], "end_xy": [ 1032316.7384340707, 6301910.118143293 ] }, "min_25m": { "gradient_pct": -3.2875072857711984, "start_distance_m": 76.0, "end_distance_m": 101.0, "midpoint_distance_m": 88.5, "start_elevation_m": 370.60539294098203, "end_elevation_m": 369.78351611953923, "start_xy": [ 1032370.2257149951, 6301926.04320909 ], "end_xy": [ 1032393.9552761605, 6301933.804586774 ] }, "min_50m": { "gradient_pct": -2.4136817975504528, "start_distance_m": 53.0, "end_distance_m": 103.0, "midpoint_distance_m": 78.0, "start_elevation_m": 370.9660383182712, "end_elevation_m": 369.759197419496, "start_xy": [ 1032348.581909763, 6301918.281617473 ], "end_xy": [ 1032395.89632833, 6301934.286578968 ] }, "min_100m": { "gradient_pct": -2.0717931934583476, "start_distance_m": 0.0, "end_distance_m": 100.0, "midpoint_distance_m": 50.0, "start_elevation_m": 371.9040100195329, "end_elevation_m": 369.83221682607456, "start_xy": [ 1032296.755, 6301910.932 ], "end_xy": [ 1032392.9847500757, 6301933.5635906765 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 28.37084331399069, "start_distance_m": 244.0, "end_distance_m": 246.0, "midpoint_distance_m": 245.0, "start_elevation_m": 387.9591850864795, "end_elevation_m": 388.52660195275934, "start_xy": [ 1032461.6282819646, 6302044.015591749 ], "end_xy": [ 1032462.170526544, 6302045.940681569 ] }, "max_3m": { "gradient_pct": 28.69633981299368, "start_distance_m": 243.0, "end_distance_m": 246.0, "midpoint_distance_m": 244.5, "start_elevation_m": 387.6657117583695, "end_elevation_m": 388.52660195275934, "start_xy": [ 1032461.3571596749, 6302043.053046839 ], "end_xy": [ 1032462.170526544, 6302045.940681569 ] } }, "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": { "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.289, "obstruction_max_height_m": 18.78, "flagged_windows_m": [ 100 ] }, "review": [], "extent": [ "descends_at_start", "may_continue_beyond_end" ] }, "provenance": { "analysis_version": "0.1.0", "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 ], "elevation_crs": "EPSG:2154", "elevation_resolution_m": 0.5, "elevation_tiles": [ "data/cache/fr/ign-lidarhd_dtm_E1032-N6301_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E1032-N6302_0m5.tif" ], "calculated_at": "2026-09-17T02:13:28+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-alps4.osm.pbf", "osm_snapshot": "", "run_id": "fr-alps4", "elevation_provider": "IGN LiDAR HD MNT 0.5 m", "elevation_licence": "Licence Ouverte / Open Licence 2.0 (Etalab) \u2014 \u00a9 IGN, LiDAR HD (MNT/MNS), data.geopf.fr; reproduction autoris\u00e9e avec mention de la source et de la date", "elevation_dataset": "LiDAR HD \u2014 MNT (sol) et MNS (surface), 0,50 m (Institut national de l'information g\u00e9ographique et foresti\u00e8re), RGF93 / Lambert-93 EPSG:2154, altitudes IGN69", "elevation_vertical_datum": "IGN69", "elevation_tile_ids": [ "E1032-N6301", "E1032-N6302" ], "elevation_blocks": [ "21LHD8RP@2025-03-06" ], "ign_dalles": [ "LHD_FXX_1032_6302_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_1032_6303_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD8RP" ], "ign_editions": [ "2025-03-06" ], "ign_dsm_edition": { "LHD_FXX_1032_6302_MNT_O_0M50_LAMB93_IGN69": "2025-03-06", "LHD_FXX_1032_6303_MNT_O_0M50_LAMB93_IGN69": "2025-03-06" }, "climb_origin": "discovered", "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked", "carriageway": { "stations": 20, "stations_resolved": 20, "width_median_m": 4.12, "width_p10_m": 2.7, "width_min_m": 2.25, "width_max_m": 7.25, "bounded_share": 0.5, "unbounded_share": 0.5, "confidence_median": 0.272, "width_median_bounded_m": 4.0, "window_m": [ 231.0, 256.0 ], "width_at_max25_m": 4.25, "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": 20, "stations_resolved": 20, "width_median_m": 3.75, "width_p10_m": 2.43, "width_min_m": 1.5, "width_max_m": 8.0, "bounded_share": 0.95, "unbounded_share": 0.05, "confidence_median": 1.0, "width_median_bounded_m": 3.75, "window_m": [ 231.0, 256.0 ], "width_at_max25_m": 4.5, "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 } }, "license": "ODbL-1.0", "license_url": "https://howsteep.org/licensing" }, "area": { "place": "Vence", "county": "Alpes-Maritimes", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }