{ "ocl_version": "0.1.0", "name": "Discovered lane (45.3123, 5.2668)", "slug": "discovered-lane-45-3123-5-2668", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 37.27294437400417, "diagnostic": true, "flags": [ "structure_excluded", "canopy_or_structure" ], "start_distance_m": 246.0, "end_distance_m": 248.0, "start_elevation_m": 419.2658276424939, "end_elevation_m": 420.011286529974, "min_gradient_pct": -30.002971813132717, "suppressed_max_gradient_pct": 60.89494078807434, "suppressed_location_m": [ 3152.0, 3154.0 ] }, { "window_m": 3.0, "max_gradient_pct": 31.90205054061721, "diagnostic": true, "flags": [ "structure_excluded", "canopy_or_structure" ], "start_distance_m": 245.0, "end_distance_m": 248.0, "start_elevation_m": 419.05422501375546, "end_elevation_m": 420.011286529974, "min_gradient_pct": -17.644466215390747, "suppressed_max_gradient_pct": 43.69865830789195, "suppressed_location_m": [ 3152.0, 3155.0 ] }, { "window_m": 5.0, "max_gradient_pct": 25.148391977504616, "diagnostic": false, "flags": [ "structure_excluded", "canopy_or_structure" ], "start_distance_m": 628.0, "end_distance_m": 633.0, "start_elevation_m": 433.0419942676401, "end_elevation_m": 434.29941386651535, "min_gradient_pct": -12.058667396535157, "suppressed_max_gradient_pct": 35.82509032082271, "suppressed_location_m": [ 3152.0, 3157.0 ] }, { "window_m": 10.0, "max_gradient_pct": 23.0785463434745, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 685.0, "end_distance_m": 695.0, "start_elevation_m": 441.8697236824024, "end_elevation_m": 444.1775783167499, "min_gradient_pct": -5.771935250020306 }, { "window_m": 20.0, "max_gradient_pct": 20.538014280210177, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 675.0, "end_distance_m": 695.0, "start_elevation_m": 440.06997546070784, "end_elevation_m": 444.1775783167499, "min_gradient_pct": -3.9753856822676426 }, { "window_m": 25.0, "max_gradient_pct": 20.17106334408254, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 670.0, "end_distance_m": 695.0, "start_elevation_m": 439.13481248072924, "end_elevation_m": 444.1775783167499, "min_gradient_pct": -2.9802424849578983 }, { "window_m": 50.0, "max_gradient_pct": 18.108539240311984, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 645.0, "end_distance_m": 695.0, "start_elevation_m": 435.1233086965939, "end_elevation_m": 444.1775783167499, "min_gradient_pct": -1.2769981924866443 }, { "window_m": 100.0, "max_gradient_pct": 15.82719119341067, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 616.0, "end_distance_m": 716.0, "start_elevation_m": 430.9120376895155, "end_elevation_m": 446.73922888292617, "min_gradient_pct": -0.7899011116242036 } ], "shape": { "ascent_concentration": 0.351, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 114.0, "shape_class": "sustained" }, "length_m": 3602.395623008249, "start_elevation_m": 413.8975429271603, "end_elevation_m": 623.9044650854898, "endpoint_gain_m": 210.00692215832953, "overall_gradient_pct": 5.829646272525705, "accumulated_ascent_m": 221.67690388160185, "window_maxima": { "max_5m": { "gradient_pct": 25.148391977504616, "start_distance_m": 628.0, "end_distance_m": 633.0, "midpoint_distance_m": 630.5, "start_elevation_m": 433.0419942676401, "end_elevation_m": 434.29941386651535, "start_xy": [ 877635.3846395022, 6470689.060718178 ], "end_xy": [ 877631.4761919075, 6470685.942379293 ] }, "max_10m": { "gradient_pct": 23.0785463434745, "start_distance_m": 685.0, "end_distance_m": 695.0, "midpoint_distance_m": 690.0, "start_elevation_m": 441.8697236824024, "end_elevation_m": 444.1775783167499, "start_xy": [ 877598.4143282473, 6470647.107624762 ], "end_xy": [ 877589.1869329293, 6470643.253383508 ] }, "max_20m": { "gradient_pct": 20.538014280210177, "start_distance_m": 675.0, "end_distance_m": 695.0, "midpoint_distance_m": 685.0, "start_elevation_m": 440.06997546070784, "end_elevation_m": 444.1775783167499, "start_xy": [ 877606.6463774123, 6470652.203235659 ], "end_xy": [ 877589.1869329293, 6470643.253383508 ] }, "max_25m": { "gradient_pct": 20.17106334408254, "start_distance_m": 670.0, "end_distance_m": 695.0, "midpoint_distance_m": 682.5, "start_elevation_m": 439.13481248072924, "end_elevation_m": 444.1775783167499, "start_xy": [ 877609.5302429048, 6470656.287757641 ], "end_xy": [ 877589.1869329293, 6470643.253383508 ] }, "max_50m": { "gradient_pct": 18.108539240311984, "start_distance_m": 645.0, "end_distance_m": 695.0, "midpoint_distance_m": 670.0, "start_elevation_m": 435.1233086965939, "end_elevation_m": 444.1775783167499, "start_xy": [ 877623.9495703677, 6470676.710367551 ], "end_xy": [ 877589.1869329293, 6470643.253383508 ] }, "max_100m": { "gradient_pct": 15.82719119341067, "start_distance_m": 616.0, "end_distance_m": 716.0, "midpoint_distance_m": 666.0, "start_elevation_m": 430.9120376895155, "end_elevation_m": 446.73922888292617, "start_xy": [ 877644.7649137294, 6470696.544731501 ], "end_xy": [ 877569.7860976893, 6470635.218176321 ] } }, "window_minima": { "min_5m": { "gradient_pct": -12.058667396535157, "start_distance_m": 322.0, "end_distance_m": 327.0, "midpoint_distance_m": 324.5, "start_elevation_m": 422.36000874433006, "end_elevation_m": 421.7570753745033, "start_xy": [ 877666.0782417452, 6470940.561758397 ], "end_xy": [ 877666.7981372492, 6470935.613854754 ] }, "min_10m": { "gradient_pct": -5.771935250020306, "start_distance_m": 333.0, "end_distance_m": 343.0, "midpoint_distance_m": 338.0, "start_elevation_m": 422.12336052933733, "end_elevation_m": 421.5461670043353, "start_xy": [ 877667.662011854, 6470929.676370381 ], "end_xy": [ 877669.1018028621, 6470919.780563095 ] }, "min_20m": { "gradient_pct": -3.9753856822676426, "start_distance_m": 335.0, "end_distance_m": 355.0, "midpoint_distance_m": 345.0, "start_elevation_m": 422.27207725042615, "end_elevation_m": 421.4770001139726, "start_xy": [ 877667.9499700557, 6470927.697208924 ], "end_xy": [ 877668.9317596682, 6470907.839578872 ] }, "min_25m": { "gradient_pct": -2.9802424849578983, "start_distance_m": 335.0, "end_distance_m": 360.0, "midpoint_distance_m": 347.5, "start_elevation_m": 422.27207725042615, "end_elevation_m": 421.5270166291867, "start_xy": [ 877667.9499700557, 6470927.697208924 ], "end_xy": [ 877668.5574178954, 6470902.853611739 ] }, "min_50m": { "gradient_pct": -1.2769981924866443, "start_distance_m": 3527.0, "end_distance_m": 3577.0, "midpoint_distance_m": 3552.0, "start_elevation_m": 624.935732236222, "end_elevation_m": 624.2972331399786, "start_xy": [ 878106.6002535321, 6468423.989064111 ], "end_xy": [ 878150.3847978115, 6468399.852087335 ] }, "min_100m": { "gradient_pct": -0.7899011116242036, "start_distance_m": 3502.0, "end_distance_m": 3602.0, "midpoint_distance_m": 3552.0, "start_elevation_m": 624.7280167645533, "end_elevation_m": 623.9381156529291, "start_xy": [ 878084.6164430184, 6468435.893352216 ], "end_xy": [ 878172.0698359982, 6468387.411865519 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 37.27294437400417, "start_distance_m": 246.0, "end_distance_m": 248.0, "midpoint_distance_m": 247.0, "start_elevation_m": 419.2658276424939, "end_elevation_m": 420.011286529974, "start_xy": [ 877665.2424499072, 6471015.760005227 ], "end_xy": [ 877664.862358926, 6471013.796454656 ] }, "max_3m": { "gradient_pct": 31.90205054061721, "start_distance_m": 245.0, "end_distance_m": 248.0, "midpoint_distance_m": 246.5, "start_elevation_m": 419.05422501375546, "end_elevation_m": 420.011286529974, "start_xy": [ 877665.432495398, 6471016.741780513 ], "end_xy": [ 877664.862358926, 6471013.796454656 ] } }, "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 ], "windows_unresolved": [] }, "no_bench_suppression": { "masked_fraction": 0.01, "windows_resited": [], "windows_unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.166, "obstruction_max_height_m": 23.1, "flagged_windows_m": [ 2, 3, 5, 10, 20, 25, 50, 100 ] }, "excluded_ranges_m": [ [ 310.0, 340.0 ], [ 3150.0, 3155.0 ] ], "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_E877-N6468_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E877-N6469_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E877-N6470_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E877-N6471_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E878-N6468_0m5.tif" ], "calculated_at": "2026-09-17T03:58:18+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-alps1.osm.pbf", "osm_snapshot": "", "run_id": "fr-alps1", "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": [ "E877-N6468", "E877-N6469", "E877-N6470", "E877-N6471", "E878-N6468" ], "elevation_blocks": [ "21LHD6OM@2024-10-24" ], "ign_dalles": [ "LHD_FXX_0877_6469_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0877_6470_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0877_6471_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0877_6472_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0878_6469_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD6OM" ], "ign_editions": [ "2024-10-24" ], "ign_dsm_edition": { "LHD_FXX_0877_6469_MNT_O_0M50_LAMB93_IGN69": "2024-10-24", "LHD_FXX_0877_6470_MNT_O_0M50_LAMB93_IGN69": "2024-10-24", "LHD_FXX_0877_6471_MNT_O_0M50_LAMB93_IGN69": "2024-10-24", "LHD_FXX_0877_6472_MNT_O_0M50_LAMB93_IGN69": "2024-10-24", "LHD_FXX_0878_6469_MNT_O_0M50_LAMB93_IGN69": "2024-10-24" }, "climb_origin": "discovered", "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked", "carriageway": { "stations": 150, "stations_resolved": 150, "width_median_m": 6.75, "width_p10_m": 2.75, "width_min_m": 1.0, "width_max_m": 12.0, "bounded_share": 0.147, "unbounded_share": 0.853, "confidence_median": 0.0, "width_median_bounded_m": 4.25, "window_m": [ 670.0, 695.0 ], "width_at_max25_m": 3.5, "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": 150, "stations_resolved": 150, "width_median_m": 7.0, "width_p10_m": 1.0, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.613, "unbounded_share": 0.387, "confidence_median": 1.0, "width_median_bounded_m": 4.12, "window_m": [ 670.0, 695.0 ], "width_at_max25_m": 1.88, "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": "Saint-Sim\u00e9on-de-Bressieux", "county": "Is\u00e8re", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }