{ "ocl_version": "0.1.0", "name": "Route de Bunand", "slug": "route-de-bunand", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 27.25227227824405, "diagnostic": true, "flags": [ "structure_excluded", "canopy_or_structure" ], "start_distance_m": 2334.0, "end_distance_m": 2336.0, "start_elevation_m": 357.1718419498306, "end_elevation_m": 357.7168873953955, "min_gradient_pct": -11.092180276025942, "suppressed_max_gradient_pct": 51.93057521912294, "suppressed_location_m": [ 2338.0, 2340.0 ] }, { "window_m": 3.0, "max_gradient_pct": 26.8909881962486, "diagnostic": true, "flags": [ "structure_excluded" ], "start_distance_m": 1512.0, "end_distance_m": 1515.0, "start_elevation_m": 299.9978822405981, "end_elevation_m": 300.80461188648553, "min_gradient_pct": -9.482839001636497, "suppressed_max_gradient_pct": 49.53367809176067, "suppressed_location_m": [ 2339.0, 2342.0 ] }, { "window_m": 5.0, "max_gradient_pct": 25.380197320299658, "diagnostic": false, "flags": [ "structure_excluded" ], "start_distance_m": 1511.0, "end_distance_m": 1516.0, "start_elevation_m": 299.7643521346416, "end_elevation_m": 301.0333620006566, "min_gradient_pct": -8.599257421700486, "suppressed_max_gradient_pct": 44.549048755941385, "suppressed_location_m": [ 2338.0, 2343.0 ] }, { "window_m": 10.0, "max_gradient_pct": 23.785509099559476, "diagnostic": false, "flags": [ "structure_excluded" ], "start_distance_m": 1506.0, "end_distance_m": 1516.0, "start_elevation_m": 298.65481109070066, "end_elevation_m": 301.0333620006566, "min_gradient_pct": -7.739138156507579, "suppressed_max_gradient_pct": 31.019300640400047, "suppressed_location_m": [ 2333.0, 2343.0 ] }, { "window_m": 20.0, "max_gradient_pct": 21.205437136794103, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1451.0, "end_distance_m": 1471.0, "start_elevation_m": 287.97382897815766, "end_elevation_m": 292.2149164055165, "min_gradient_pct": -7.288368760107744 }, { "window_m": 25.0, "max_gradient_pct": 21.149411418606405, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1449.0, "end_distance_m": 1474.0, "start_elevation_m": 287.5527489757412, "end_elevation_m": 292.8401018303928, "min_gradient_pct": -7.05115168530574 }, { "window_m": 50.0, "max_gradient_pct": 20.167179606127206, "diagnostic": false, "flags": [], "start_distance_m": 1434.0, "end_distance_m": 1484.0, "start_elevation_m": 284.63049938879465, "end_elevation_m": 294.71408919185825, "min_gradient_pct": -6.898399386570077 }, { "window_m": 100.0, "max_gradient_pct": 19.289569880047907, "diagnostic": false, "flags": [], "start_distance_m": 1417.0, "end_distance_m": 1517.0, "start_elevation_m": 281.94675862481176, "end_elevation_m": 301.23632850485967, "min_gradient_pct": -5.591128233749828 } ], "shape": { "ascent_concentration": 0.407, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 172.0, "shape_class": "sustained" }, "length_m": 3855.54271781159, "start_elevation_m": 241.77447369360044, "end_elevation_m": 443.24619423584045, "endpoint_gain_m": 201.47172054224, "overall_gradient_pct": 5.22550871013551, "accumulated_ascent_m": 223.04940250866133, "window_maxima": { "max_5m": { "gradient_pct": 25.380197320299658, "start_distance_m": 1511.0, "end_distance_m": 1516.0, "midpoint_distance_m": 1513.5, "start_elevation_m": 299.7643521346416, "end_elevation_m": 301.0333620006566, "start_xy": [ 908378.0898143192, 6500988.655982907 ], "end_xy": [ 908379.0295804237, 6500993.566872813 ] }, "max_10m": { "gradient_pct": 23.785509099559476, "start_distance_m": 1506.0, "end_distance_m": 1516.0, "midpoint_distance_m": 1511.0, "start_elevation_m": 298.65481109070066, "end_elevation_m": 301.0333620006566, "start_xy": [ 908377.1500482146, 6500983.745093001 ], "end_xy": [ 908379.0295804237, 6500993.566872813 ] }, "max_20m": { "gradient_pct": 21.205437136794103, "start_distance_m": 1451.0, "end_distance_m": 1471.0, "midpoint_distance_m": 1461.0, "start_elevation_m": 287.97382897815766, "end_elevation_m": 292.2149164055165, "start_xy": [ 908367.7920856556, 6500929.728350317 ], "end_xy": [ 908369.6719492904, 6500949.567585294 ] }, "max_25m": { "gradient_pct": 21.149411418606405, "start_distance_m": 1449.0, "end_distance_m": 1474.0, "midpoint_distance_m": 1461.5, "start_elevation_m": 287.5527489757412, "end_elevation_m": 292.8401018303928, "start_xy": [ 908368.0420033011, 6500927.744026461 ], "end_xy": [ 908370.4015843802, 6500952.47750499 ] }, "max_50m": { "gradient_pct": 20.167179606127206, "start_distance_m": 1434.0, "end_distance_m": 1484.0, "midpoint_distance_m": 1459.0, "start_elevation_m": 284.63049938879465, "end_elevation_m": 294.71408919185825, "start_xy": [ 908369.9163856423, 6500912.861597531 ], "end_xy": [ 908372.833701346, 6500962.177237309 ] }, "max_100m": { "gradient_pct": 19.289569880047907, "start_distance_m": 1417.0, "end_distance_m": 1517.0, "midpoint_distance_m": 1467.0, "start_elevation_m": 281.94675862481176, "end_elevation_m": 301.23632850485967, "start_xy": [ 908371.6642587887, 6500895.9752490185 ], "end_xy": [ 908379.2175336446, 6500994.549050794 ] } }, "window_minima": { "min_5m": { "gradient_pct": -8.599257421700486, "start_distance_m": 1844.0, "end_distance_m": 1849.0, "midpoint_distance_m": 1846.5, "start_elevation_m": 329.3161668048931, "end_elevation_m": 328.8862039338081, "start_xy": [ 908667.5388297763, 6501104.67658085 ], "end_xy": [ 908672.5171581049, 6501105.141604562 ] }, "min_10m": { "gradient_pct": -7.739138156507579, "start_distance_m": 1914.0, "end_distance_m": 1924.0, "midpoint_distance_m": 1919.0, "start_elevation_m": 325.6386630172106, "end_elevation_m": 324.86474920155985, "start_xy": [ 908736.0715013571, 6501116.6031226395 ], "end_xy": [ 908744.6611674232, 6501121.72343873 ] }, "min_20m": { "gradient_pct": -7.288368760107744, "start_distance_m": 1844.0, "end_distance_m": 1864.0, "midpoint_distance_m": 1854.0, "start_elevation_m": 329.3161668048931, "end_elevation_m": 327.85849305287155, "start_xy": [ 908667.5388297763, 6501104.67658085 ], "end_xy": [ 908687.4521430905, 6501106.5366757 ] }, "min_25m": { "gradient_pct": -7.05115168530574, "start_distance_m": 1838.0, "end_distance_m": 1863.0, "midpoint_distance_m": 1850.5, "start_elevation_m": 329.68539003263805, "end_elevation_m": 327.9226021113116, "start_xy": [ 908661.5542870768, 6501104.274337321 ], "end_xy": [ 908686.4564774248, 6501106.443670957 ] }, "min_50m": { "gradient_pct": -6.898399386570077, "start_distance_m": 1838.0, "end_distance_m": 1888.0, "midpoint_distance_m": 1863.0, "start_elevation_m": 329.68539003263805, "end_elevation_m": 326.236190339353, "start_xy": [ 908661.5542870768, 6501104.274337321 ], "end_xy": [ 908711.266490259, 6501109.239896887 ] }, "min_100m": { "gradient_pct": -5.591128233749828, "start_distance_m": 1831.0, "end_distance_m": 1931.0, "midpoint_distance_m": 1881.0, "start_elevation_m": 330.10087162373736, "end_elevation_m": 324.50974338998753, "start_xy": [ 908654.5604839289, 6501103.979858921 ], "end_xy": [ 908750.6739876203, 6501125.307569449 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 27.25227227824405, "start_distance_m": 2334.0, "end_distance_m": 2336.0, "midpoint_distance_m": 2335.0, "start_elevation_m": 357.1718419498306, "end_elevation_m": 357.7168873953955, "start_xy": [ 908981.5329492139, 6501398.483355762 ], "end_xy": [ 908983.0910241941, 6501399.737310449 ] }, "max_3m": { "gradient_pct": 26.8909881962486, "start_distance_m": 1512.0, "end_distance_m": 1515.0, "midpoint_distance_m": 1513.5, "start_elevation_m": 299.9978822405981, "end_elevation_m": 300.80461188648553, "start_xy": [ 908378.2777675401, 6500989.638160888 ], "end_xy": [ 908378.8416272028, 6500992.584694832 ] } }, "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": { "structure_suppression": { "masked_fraction": 0.002, "windows_resited": [ 2.0, 3.0, 5.0, 10.0 ], "windows_unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.196, "obstruction_max_height_m": 27.97, "flagged_windows_m": [ 2, 20, 25 ] }, "excluded_ranges_m": [ [ 2339.0, 2344.0 ] ], "review": [], "extent": [ "descends_at_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_E908-N6500_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E908-N6501_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E909-N6500_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E909-N6501_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E909-N6502_0m5.tif" ], "calculated_at": "2026-09-17T04:23:53+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-alps2.osm.pbf", "osm_snapshot": "", "run_id": "fr-alps2", "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": [ "E908-N6500", "E908-N6501", "E909-N6500", "E909-N6501", "E909-N6502" ], "elevation_blocks": [ "21LHD6PL@2025-03-07" ], "ign_dalles": [ "LHD_FXX_0908_6501_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0908_6502_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0909_6501_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0909_6502_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0909_6503_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD6PL" ], "ign_editions": [ "2025-03-07" ], "ign_dsm_edition": { "LHD_FXX_0908_6501_MNT_O_0M50_LAMB93_IGN69": "2025-03-07", "LHD_FXX_0908_6502_MNT_O_0M50_LAMB93_IGN69": "2025-03-07", "LHD_FXX_0909_6501_MNT_O_0M50_LAMB93_IGN69": "2025-03-07", "LHD_FXX_0909_6502_MNT_O_0M50_LAMB93_IGN69": "2025-03-07", "LHD_FXX_0909_6503_MNT_O_0M50_LAMB93_IGN69": "2025-03-07" }, "climb_origin": "discovered", "structure_own_ways": 4, "carriageway": { "stations": 161, "stations_resolved": 161, "width_median_m": 5.25, "width_p10_m": 3.5, "width_min_m": 2.0, "width_max_m": 12.0, "bounded_share": 0.298, "unbounded_share": 0.702, "confidence_median": 0.0, "width_median_bounded_m": 4.25, "window_m": [ 1449.0, 1474.0 ], "width_at_max25_m": 4.5, "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": 161, "stations_resolved": 161, "width_median_m": 7.0, "width_p10_m": 1.0, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.578, "unbounded_share": 0.422, "confidence_median": 1.0, "width_median_bounded_m": 3.5, "window_m": [ 1449.0, 1474.0 ], "width_at_max25_m": 8.5, "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": "Avressieux", "county": "Savoie", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }