{ "ocl_version": "0.1.0", "name": "Col du Granier from Jacob-Bellecombette", "slug": "col-du-granier-from-jacob-bellecombette", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 35.65219212763395, "diagnostic": true, "flags": [ "structure_excluded" ], "start_distance_m": 6945.0, "end_distance_m": 6947.0, "start_elevation_m": 815.7450749314979, "end_elevation_m": 816.4581187740506, "min_gradient_pct": -327.32716558603556, "suppressed_max_gradient_pct": 331.95119109958, "suppressed_location_m": [ 7132.0, 7134.0 ] }, { "window_m": 3.0, "max_gradient_pct": 26.798779522399247, "diagnostic": true, "flags": [ "structure_excluded" ], "start_distance_m": 6945.0, "end_distance_m": 6948.0, "start_elevation_m": 815.7450749314979, "end_elevation_m": 816.5490383171699, "min_gradient_pct": -275.2655331515295, "suppressed_max_gradient_pct": 232.80245207825678, "suppressed_location_m": [ 7136.0, 7139.0 ] }, { "window_m": 5.0, "max_gradient_pct": 18.982444271307486, "diagnostic": false, "flags": [ "structure_excluded" ], "start_distance_m": 6945.0, "end_distance_m": 6950.0, "start_elevation_m": 815.7450749314979, "end_elevation_m": 816.6941971450633, "min_gradient_pct": -207.37595109428412, "suppressed_max_gradient_pct": 204.85008115415667, "suppressed_location_m": [ 7133.0, 7138.0 ] }, { "window_m": 10.0, "max_gradient_pct": 13.841173458671392, "diagnostic": false, "flags": [ "structure_excluded" ], "start_distance_m": 2197.0, "end_distance_m": 2207.0, "start_elevation_m": 551.6382394373409, "end_elevation_m": 553.022356783208, "min_gradient_pct": -145.09983400121882, "suppressed_max_gradient_pct": 173.30549907218597, "suppressed_location_m": [ 7132.0, 7142.0 ] }, { "window_m": 20.0, "max_gradient_pct": 13.585913854387854, "diagnostic": false, "flags": [ "structure_excluded" ], "start_distance_m": 2182.0, "end_distance_m": 2202.0, "start_elevation_m": 549.656000404046, "end_elevation_m": 552.3731831749236, "min_gradient_pct": -96.78418446557941, "suppressed_max_gradient_pct": 133.4324013288085, "suppressed_location_m": [ 7132.0, 7152.0 ] }, { "window_m": 25.0, "max_gradient_pct": 13.503568277122667, "diagnostic": false, "flags": [ "structure_excluded" ], "start_distance_m": 2177.0, "end_distance_m": 2202.0, "start_elevation_m": 548.997291105643, "end_elevation_m": 552.3731831749236, "min_gradient_pct": -87.43004415117957, "suppressed_max_gradient_pct": 120.91884068730224, "suppressed_location_m": [ 7132.0, 7157.0 ] }, { "window_m": 50.0, "max_gradient_pct": 13.015510839264834, "diagnostic": false, "flags": [ "structure_excluded" ], "start_distance_m": 2173.0, "end_distance_m": 2223.0, "start_elevation_m": 548.5171248498006, "end_elevation_m": 555.024880269433, "min_gradient_pct": -62.03150721057932, "suppressed_max_gradient_pct": 72.63765674131787, "suppressed_location_m": [ 7116.0, 7166.0 ] }, { "window_m": 100.0, "max_gradient_pct": 11.923958792484882, "diagnostic": false, "flags": [ "structure_excluded" ], "start_distance_m": 2119.0, "end_distance_m": 2219.0, "start_elevation_m": 542.6241144499593, "end_elevation_m": 554.5480732424442, "min_gradient_pct": -28.549448522108378, "suppressed_max_gradient_pct": 38.970318449423985, "suppressed_location_m": [ 7066.0, 7166.0 ] } ], "shape": { "ascent_concentration": 0.287, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 95.0, "shape_class": "sustained" }, "length_m": 12716.52545373394, "start_elevation_m": 421.9945790009691, "end_elevation_m": 1132.2381544531245, "endpoint_gain_m": 710.2435754521554, "overall_gradient_pct": 5.585201539809031, "accumulated_ascent_m": 763.3499542834725, "window_maxima": { "max_5m": { "gradient_pct": 18.982444271307486, "start_distance_m": 6945.0, "end_distance_m": 6950.0, "midpoint_distance_m": 6947.5, "start_elevation_m": 815.7450749314979, "end_elevation_m": 816.6941971450633, "start_xy": [ 928342.8900576032, 6494851.958051622 ], "end_xy": [ 928339.9711294128, 6494847.911131051 ] }, "max_10m": { "gradient_pct": 13.841173458671392, "start_distance_m": 2197.0, "end_distance_m": 2207.0, "midpoint_distance_m": 2202.0, "start_elevation_m": 551.6382394373409, "end_elevation_m": 553.022356783208, "start_xy": [ 927502.9501014097, 6496949.223563278 ], "end_xy": [ 927499.6968933311, 6496939.767526201 ] }, "max_20m": { "gradient_pct": 13.585913854387854, "start_distance_m": 2182.0, "end_distance_m": 2202.0, "midpoint_distance_m": 2192.0, "start_elevation_m": 549.656000404046, "end_elevation_m": 552.3731831749236, "start_xy": [ 927507.8299135275, 6496963.407618893 ], "end_xy": [ 927501.3234973704, 6496944.495544739 ] }, "max_25m": { "gradient_pct": 13.503568277122667, "start_distance_m": 2177.0, "end_distance_m": 2202.0, "midpoint_distance_m": 2189.5, "start_elevation_m": 548.997291105643, "end_elevation_m": 552.3731831749236, "start_xy": [ 927509.4565175668, 6496968.135637431 ], "end_xy": [ 927501.3234973704, 6496944.495544739 ] }, "max_50m": { "gradient_pct": 13.015510839264834, "start_distance_m": 2173.0, "end_distance_m": 2223.0, "midpoint_distance_m": 2198.0, "start_elevation_m": 548.5171248498006, "end_elevation_m": 555.024880269433, "start_xy": [ 927510.7578007983, 6496971.918052262 ], "end_xy": [ 927494.8987764738, 6496924.516452238 ] }, "max_100m": { "gradient_pct": 11.923958792484882, "start_distance_m": 2119.0, "end_distance_m": 2219.0, "midpoint_distance_m": 2169.0, "start_elevation_m": 542.6241144499593, "end_elevation_m": 554.5480732424442, "start_xy": [ 927519.0082182048, 6497025.018996544 ], "end_xy": [ 927495.8823829979, 6496928.393631394 ] } }, "window_minima": { "min_5m": { "gradient_pct": -207.37595109428412, "start_distance_m": 7208.0, "end_distance_m": 7213.0, "midpoint_distance_m": 7210.5, "start_elevation_m": 842.4402839397213, "end_elevation_m": 832.0714863850071, "start_xy": [ 928362.3733260963, 6494629.986168102 ], "end_xy": [ 928366.3438998703, 6494626.948360134 ] }, "min_10m": { "gradient_pct": -145.09983400121882, "start_distance_m": 7203.0, "end_distance_m": 7213.0, "midpoint_distance_m": 7208.0, "start_elevation_m": 846.581469785129, "end_elevation_m": 832.0714863850071, "start_xy": [ 928358.3797330093, 6494632.994691703 ], "end_xy": [ 928366.3438998703, 6494626.948360134 ] }, "min_20m": { "gradient_pct": -96.78418446557941, "start_distance_m": 7193.0, "end_distance_m": 7213.0, "midpoint_distance_m": 7203.0, "start_elevation_m": 851.428323278123, "end_elevation_m": 832.0714863850071, "start_xy": [ 928350.3925468351, 6494639.011738904 ], "end_xy": [ 928366.3438998703, 6494626.948360134 ] }, "min_25m": { "gradient_pct": -87.43004415117957, "start_distance_m": 7188.0, "end_distance_m": 7213.0, "midpoint_distance_m": 7200.5, "start_elevation_m": 853.928997422802, "end_elevation_m": 832.0714863850071, "start_xy": [ 928346.398953748, 6494642.020262505 ], "end_xy": [ 928366.3438998703, 6494626.948360134 ] }, "min_50m": { "gradient_pct": -62.03150721057932, "start_distance_m": 7165.0, "end_distance_m": 7215.0, "midpoint_distance_m": 7190.0, "start_elevation_m": 863.2307493282796, "end_elevation_m": 832.2149957229899, "start_xy": [ 928328.0284255475, 6494655.859471067 ], "end_xy": [ 928367.8905415073, 6494625.680330305 ] }, "min_100m": { "gradient_pct": -28.549448522108378, "start_distance_m": 7165.0, "end_distance_m": 7265.0, "midpoint_distance_m": 7215.0, "start_elevation_m": 863.2307493282796, "end_elevation_m": 834.6813008061712, "start_xy": [ 928328.0284255475, 6494655.859471067 ], "end_xy": [ 928405.5890392524, 6494592.961857934 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 35.65219212763395, "start_distance_m": 6945.0, "end_distance_m": 6947.0, "midpoint_distance_m": 6946.0, "start_elevation_m": 815.7450749314979, "end_elevation_m": 816.4581187740506, "start_xy": [ 928342.8900576032, 6494851.958051622 ], "end_xy": [ 928341.6538061595, 6494850.385893117 ] }, "max_3m": { "gradient_pct": 26.798779522399247, "start_distance_m": 6945.0, "end_distance_m": 6948.0, "midpoint_distance_m": 6946.5, "start_elevation_m": 815.7450749314979, "end_elevation_m": 816.5490383171699, "start_xy": [ 928342.8900576032, 6494851.958051622 ], "end_xy": [ 928341.0356804376, 6494849.599813864 ] } }, "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": 0.016, "windows_resited": [ 2.0, 3.0, 5.0, 10.0, 20.0, 25.0, 50.0, 100.0 ], "windows_unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.14, "obstruction_max_height_m": 32.92, "flagged_windows_m": [] }, "excluded_ranges_m": [ [ 525.0, 548.0 ], [ 4857.0, 4891.0 ], [ 7125.0, 7217.0 ], [ 9138.0, 9194.0 ] ], "review": [], "extent": [] }, "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_E927-N6490_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E927-N6491_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E927-N6492_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E927-N6493_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E927-N6494_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E927-N6495_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E927-N6496_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E927-N6497_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E927-N6498_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E928-N6491_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E928-N6492_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E928-N6493_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E928-N6494_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E928-N6495_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E928-N6497_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E928-N6498_0m5.tif" ], "calculated_at": "2026-09-17T03:00:17+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-alps3.osm.pbf", "osm_snapshot": "", "run_id": "fr-alps3", "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": [ "E927-N6490", "E927-N6491", "E927-N6492", "E927-N6493", "E927-N6494", "E927-N6495", "E927-N6496", "E927-N6497", "E927-N6498", "E928-N6491", "E928-N6492", "E928-N6493", "E928-N6494", "E928-N6495", "E928-N6497", "E928-N6498" ], "elevation_blocks": [ "21LHD6PL@2025-03-07" ], "ign_dalles": [ "LHD_FXX_0927_6491_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0927_6492_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0927_6493_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0927_6494_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0927_6495_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0927_6496_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0927_6497_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0927_6498_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0927_6499_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0928_6492_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0928_6493_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0928_6494_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0928_6495_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0928_6496_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0928_6498_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0928_6499_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD6PL" ], "ign_editions": [ "2025-03-07" ], "ign_dsm_edition": { "LHD_FXX_0927_6491_MNT_O_0M50_LAMB93_IGN69": "2025-03-07", "LHD_FXX_0927_6492_MNT_O_0M50_LAMB93_IGN69": "2025-03-07", "LHD_FXX_0927_6493_MNT_O_0M50_LAMB93_IGN69": "2025-03-07", "LHD_FXX_0927_6494_MNT_O_0M50_LAMB93_IGN69": "2025-03-07", "LHD_FXX_0927_6495_MNT_O_0M50_LAMB93_IGN69": "2025-03-07", "LHD_FXX_0927_6496_MNT_O_0M50_LAMB93_IGN69": "2025-03-07", "LHD_FXX_0927_6497_MNT_O_0M50_LAMB93_IGN69": "2025-03-07", "LHD_FXX_0927_6498_MNT_O_0M50_LAMB93_IGN69": "2025-03-07", "LHD_FXX_0927_6499_MNT_O_0M50_LAMB93_IGN69": "2025-03-07", "LHD_FXX_0928_6492_MNT_O_0M50_LAMB93_IGN69": "2025-03-07", "LHD_FXX_0928_6493_MNT_O_0M50_LAMB93_IGN69": "2025-03-07", "LHD_FXX_0928_6494_MNT_O_0M50_LAMB93_IGN69": "2025-03-07", "LHD_FXX_0928_6495_MNT_O_0M50_LAMB93_IGN69": "2025-03-07", "LHD_FXX_0928_6496_MNT_O_0M50_LAMB93_IGN69": "2025-03-07", "LHD_FXX_0928_6498_MNT_O_0M50_LAMB93_IGN69": "2025-03-07", "LHD_FXX_0928_6499_MNT_O_0M50_LAMB93_IGN69": "2025-03-07" }, "climb_origin": "named-pass", "structure_own_ways": 31, "structure_mask_ranges_m": [ [ 7130.8, 7212.1 ], [ 4862.8, 4886.2 ], [ 531.8, 543.7 ], [ 9143.5, 9189.1 ] ], "carriageway": { "stations": 515, "stations_resolved": 515, "width_median_m": 7.0, "width_p10_m": 5.5, "width_min_m": 2.25, "width_max_m": 11.75, "bounded_share": 0.396, "unbounded_share": 0.604, "confidence_median": 0.0, "width_median_bounded_m": 6.75, "window_m": [ 2177.0, 2202.0 ], "width_at_max25_m": 6.5, "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": 515, "stations_resolved": 515, "width_median_m": 6.75, "width_p10_m": 1.0, "width_min_m": 0.0, "width_max_m": 12.0, "bounded_share": 0.835, "unbounded_share": 0.165, "confidence_median": 1.0, "width_median_bounded_m": 6.0, "window_m": [ 2177.0, 2202.0 ], "width_at_max25_m": 8.0, "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 } }, "license": "ODbL-1.0", "license_url": "https://howsteep.org/licensing" }, "area": { "place": "Jacob-Bellecombette", "county": "Savoie", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }