{ "ocl_version": "0.1.0", "name": "Chemin des Huttes", "slug": "chemin-des-huttes-5", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 30.36336070871357, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 1669.0, "end_distance_m": 1671.0, "start_elevation_m": 770.7897507104874, "end_elevation_m": 771.3970179246617, "min_gradient_pct": -2.3969835999309907 }, { "window_m": 3.0, "max_gradient_pct": 27.66299913129539, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 1669.0, "end_distance_m": 1672.0, "start_elevation_m": 770.7897507104874, "end_elevation_m": 771.6196406844263, "min_gradient_pct": -2.0042999108227377 }, { "window_m": 5.0, "max_gradient_pct": 22.915192542805016, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1627.0, "end_distance_m": 1632.0, "start_elevation_m": 764.2221125265423, "end_elevation_m": 765.3678721536826, "min_gradient_pct": -1.2224634924723432 }, { "window_m": 10.0, "max_gradient_pct": 20.152399178717815, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 366.0, "end_distance_m": 376.0, "start_elevation_m": 619.9942828648784, "end_elevation_m": 622.0095227827502, "min_gradient_pct": -0.5043288921137901 }, { "window_m": 20.0, "max_gradient_pct": 19.022656304201178, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1624.0, "end_distance_m": 1644.0, "start_elevation_m": 763.6930913170428, "end_elevation_m": 767.497622577883, "min_gradient_pct": 0.6978487639622699 }, { "window_m": 25.0, "max_gradient_pct": 18.505268927495308, "diagnostic": false, "flags": [], "start_distance_m": 860.0, "end_distance_m": 885.0, "start_elevation_m": 683.7376013796886, "end_elevation_m": 688.3639186115624, "min_gradient_pct": 1.3490659515637162 }, { "window_m": 50.0, "max_gradient_pct": 17.880929797113367, "diagnostic": false, "flags": [], "start_distance_m": 838.0, "end_distance_m": 888.0, "start_elevation_m": 679.9439505674959, "end_elevation_m": 688.8844154660526, "min_gradient_pct": 2.327079064742975 }, { "window_m": 100.0, "max_gradient_pct": 17.27654974472557, "diagnostic": false, "flags": [], "start_distance_m": 831.0, "end_distance_m": 931.0, "start_elevation_m": 678.7885967164626, "end_elevation_m": 696.0651464611882, "min_gradient_pct": 4.484164967742572 } ], "shape": { "ascent_concentration": 0.308, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 181.0, "shape_class": "sustained" }, "length_m": 2326.546728955967, "start_elevation_m": 576.0308609778147, "end_elevation_m": 831.8190523837928, "endpoint_gain_m": 255.78819140597818, "overall_gradient_pct": 10.99432855667432, "accumulated_ascent_m": 256.0649263882765, "window_maxima": { "max_5m": { "gradient_pct": 22.915192542805016, "start_distance_m": 1627.0, "end_distance_m": 1632.0, "midpoint_distance_m": 1629.5, "start_elevation_m": 764.2221125265423, "end_elevation_m": 765.3678721536826, "start_xy": [ 984114.6939111192, 6765555.690666194 ], "end_xy": [ 984116.0311523152, 6765560.508527336 ] }, "max_10m": { "gradient_pct": 20.152399178717815, "start_distance_m": 366.0, "end_distance_m": 376.0, "midpoint_distance_m": 371.0, "start_elevation_m": 619.9942828648784, "end_elevation_m": 622.0095227827502, "start_xy": [ 983763.921622764, 6764802.964632248 ], "end_xy": [ 983769.0952765176, 6764811.436382416 ] }, "max_20m": { "gradient_pct": 19.022656304201178, "start_distance_m": 1624.0, "end_distance_m": 1644.0, "midpoint_distance_m": 1634.0, "start_elevation_m": 763.6930913170428, "end_elevation_m": 767.497622577883, "start_xy": [ 984113.8915664017, 6765552.799949508 ], "end_xy": [ 984119.2405311856, 6765572.071394077 ] }, "max_25m": { "gradient_pct": 18.505268927495308, "start_distance_m": 860.0, "end_distance_m": 885.0, "midpoint_distance_m": 872.5, "start_elevation_m": 683.7376013796886, "end_elevation_m": 688.3639186115624, "start_xy": [ 984051.2083980711, 6765190.026951846 ], "end_xy": [ 984068.3890393233, 6765208.188052202 ] }, "max_50m": { "gradient_pct": 17.880929797113367, "start_distance_m": 838.0, "end_distance_m": 888.0, "midpoint_distance_m": 863.0, "start_elevation_m": 679.9439505674959, "end_elevation_m": 688.8844154660526, "start_xy": [ 984036.0894337691, 6765174.045183532 ], "end_xy": [ 984070.4507162735, 6765210.367384245 ] }, "max_100m": { "gradient_pct": 17.27654974472557, "start_distance_m": 831.0, "end_distance_m": 931.0, "midpoint_distance_m": 881.0, "start_elevation_m": 678.7885967164626, "end_elevation_m": 696.0651464611882, "start_xy": [ 984031.2788542185, 6765168.9600754315 ], "end_xy": [ 984095.82355123, 6765244.543850652 ] } }, "window_minima": { "min_5m": { "gradient_pct": -1.2224634924723432, "start_distance_m": 1996.0, "end_distance_m": 2001.0, "midpoint_distance_m": 1998.5, "start_elevation_m": 807.0028175142427, "end_elevation_m": 806.9416943396191, "start_xy": [ 984241.6097739532, 6765896.085235685 ], "end_xy": [ 984244.320999145, 6765900.286337678 ] }, "min_10m": { "gradient_pct": -0.5043288921137901, "start_distance_m": 1992.0, "end_distance_m": 2002.0, "midpoint_distance_m": 1997.0, "start_elevation_m": 806.9790307631813, "end_elevation_m": 806.9285978739699, "start_xy": [ 984239.4407937997, 6765892.72435409 ], "end_xy": [ 984244.8632441834, 6765901.126558077 ] }, "min_20m": { "gradient_pct": 0.6978487639622699, "start_distance_m": 1987.0, "end_distance_m": 2007.0, "midpoint_distance_m": 1997.0, "start_elevation_m": 806.8523925931859, "end_elevation_m": 806.9919623459783, "start_xy": [ 984236.7295686078, 6765888.523252097 ], "end_xy": [ 984247.5744693753, 6765905.327660071 ] }, "min_25m": { "gradient_pct": 1.3490659515637162, "start_distance_m": 1982.0, "end_distance_m": 2007.0, "midpoint_distance_m": 1994.5, "start_elevation_m": 806.6546958580874, "end_elevation_m": 806.9919623459783, "start_xy": [ 984234.0183434159, 6765884.322150104 ], "end_xy": [ 984247.5744693753, 6765905.327660071 ] }, "min_50m": { "gradient_pct": 2.327079064742975, "start_distance_m": 1041.0, "end_distance_m": 1091.0, "midpoint_distance_m": 1066.0, "start_elevation_m": 707.0788692219287, "end_elevation_m": 708.2424087543002, "start_xy": [ 984157.2021853036, 6765333.789311103 ], "end_xy": [ 984191.5257952062, 6765368.316046968 ] }, "min_100m": { "gradient_pct": 4.484164967742572, "start_distance_m": 1020.0, "end_distance_m": 1120.0, "midpoint_distance_m": 1070.0, "start_elevation_m": 706.4300379906456, "end_elevation_m": 710.9142029583882, "start_xy": [ 984148.7626163231, 6765314.5698044505 ], "end_xy": [ 984218.0861385023, 6765374.5354023455 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 30.36336070871357, "start_distance_m": 1669.0, "end_distance_m": 1671.0, "midpoint_distance_m": 1670.0, "start_elevation_m": 770.7897507104874, "end_elevation_m": 771.3970179246617, "start_xy": [ 984125.9267371657, 6765596.160699787 ], "end_xy": [ 984126.461633644, 6765598.087844243 ] }, "max_3m": { "gradient_pct": 27.66299913129539, "start_distance_m": 1669.0, "end_distance_m": 1672.0, "midpoint_distance_m": 1670.5, "start_elevation_m": 770.7897507104874, "end_elevation_m": 771.6196406844263, "start_xy": [ 984125.9267371657, 6765596.160699787 ], "end_xy": [ 984126.7290818832, 6765599.051416472 ] } }, "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": 0.205, "obstruction_max_height_m": 29.28, "flagged_windows_m": [ 2, 3, 5, 10, 20 ] }, "review": [], "extent": [ "may_start_earlier", "may_continue_beyond_end" ] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "686aca469eafb5c6deda431acc2396d659a613ab", "code_git_dirty": "false", "analysis_version": "0.1.0", "analysis_config_digest": "sha256:0048c2bbb24ab95e", "python": "3.14.4", "numpy": "2.5.3", "rasterio": "1.5.1", "pyproj": "3.8.0", "laspy": "2.7.0", "shapely": "2.1.2", "pyosmium": "4.3.1", "libosmium": "2.23.1", "gdal": "3.12.4", "proj": "9.8.1", "run_id": "fr-vosges", "road_pbf": "block-batch-fr-vosges.osm.pbf", "region_key": "france", "crs": "EPSG:2154", "elevation_provider_key": "ign-lidarhd", "tile_index": "wms-grid", "authority": "bdtopo", "registry_pbf": "france-vosges-2026-09-16.osm.pbf", "tile_index_snapshot": "sha256:3827be8f439ab5f4" }, "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_E983-N6764_0m5@22LHDVosgesQG-2025-02-21.tif", "data/cache/fr/ign-lidarhd_dtm_E983-N6765_0m5@22LHDVosgesQG-2025-02-21.tif", "data/cache/fr/ign-lidarhd_dtm_E984-N6764_0m5@22LHDVosgesQG-2025-02-21.tif", "data/cache/fr/ign-lidarhd_dtm_E984-N6765_0m5@22LHDVosgesQG-2025-02-21.tif", "data/cache/fr/ign-lidarhd_dtm_E984-N6766_0m5@22LHDVosgesQG-2025-02-21.tif" ], "calculated_at": "2026-09-19T23:20:29+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-vosges.osm.pbf", "osm_snapshot": "", "run_id": "fr-vosges", "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": [ "E983-N6764", "E983-N6765", "E984-N6764", "E984-N6765", "E984-N6766" ], "elevation_blocks": [ "22LHDVosgesQG@2025-02-21" ], "ign_dalles": [ "LHD_FXX_0983_6765_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0983_6766_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0984_6765_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0984_6766_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0984_6767_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "22LHDVosgesQG" ], "ign_editions": [ "2025-02-21" ], "ign_dsm_edition": { "LHD_FXX_0983_6765_MNT_O_0M50_LAMB93_IGN69": "2025-02-21", "LHD_FXX_0983_6766_MNT_O_0M50_LAMB93_IGN69": "2025-02-21", "LHD_FXX_0984_6765_MNT_O_0M50_LAMB93_IGN69": "2025-02-21", "LHD_FXX_0984_6766_MNT_O_0M50_LAMB93_IGN69": "2025-02-21", "LHD_FXX_0984_6767_MNT_O_0M50_LAMB93_IGN69": "2025-02-21" }, "climb_origin": "discovered", "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked", "carriageway": { "stations": 99, "stations_resolved": 99, "width_median_m": 5.0, "width_p10_m": 3.25, "width_min_m": 1.25, "width_max_m": 12.0, "bounded_share": 0.242, "unbounded_share": 0.758, "confidence_median": 0.0, "width_median_bounded_m": 4.88, "window_m": [ 860.0, 885.0 ], "width_at_max25_m": 4.88, "window_stations": 6, "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": 99, "stations_resolved": 99, "width_median_m": 6.25, "width_p10_m": 1.0, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.798, "unbounded_share": 0.202, "confidence_median": 1.0, "width_median_bounded_m": 5.25, "window_m": [ 860.0, 885.0 ], "width_at_max25_m": 8.5, "window_stations": 6, "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": "Le M\u00e9nil", "county": "Vosges", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }