{ "ocl_version": "0.1.0", "name": "Discovered lane (44.3136, 6.7398)", "slug": "discovered-lane-44-3136-6-7398", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 25.69235047208167, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 647.0, "end_distance_m": 649.0, "start_elevation_m": 1829.4078422015236, "end_elevation_m": 1829.9216892109653, "min_gradient_pct": -14.48981256389743 }, { "window_m": 3.0, "max_gradient_pct": 24.48199277932872, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 646.0, "end_distance_m": 649.0, "start_elevation_m": 1829.1872294275854, "end_elevation_m": 1829.9216892109653, "min_gradient_pct": -13.260655470359476 }, { "window_m": 5.0, "max_gradient_pct": 22.38392446810394, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 344.0, "end_distance_m": 349.0, "start_elevation_m": 1802.7240259330365, "end_elevation_m": 1803.8432221564417, "min_gradient_pct": -12.285569900086557 }, { "window_m": 10.0, "max_gradient_pct": 21.90612113404086, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 344.0, "end_distance_m": 354.0, "start_elevation_m": 1802.7240259330365, "end_elevation_m": 1804.9146380464406, "min_gradient_pct": -11.711793325789586 }, { "window_m": 20.0, "max_gradient_pct": 20.858359461899454, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 344.0, "end_distance_m": 364.0, "start_elevation_m": 1802.7240259330365, "end_elevation_m": 1806.8956978254164, "min_gradient_pct": -9.405313534163042 }, { "window_m": 25.0, "max_gradient_pct": 20.814159489533267, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 333.0, "end_distance_m": 358.0, "start_elevation_m": 1800.558173445399, "end_elevation_m": 1805.7617133177823, "min_gradient_pct": -8.237202456081832 }, { "window_m": 50.0, "max_gradient_pct": 20.146740133921412, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 325.0, "end_distance_m": 375.0, "start_elevation_m": 1798.9607263369376, "end_elevation_m": 1809.0340964038983, "min_gradient_pct": -3.490463153154451 }, { "window_m": 100.0, "max_gradient_pct": 16.942944412170846, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 287.0, "end_distance_m": 387.0, "start_elevation_m": 1793.3026944397968, "end_elevation_m": 1810.2456388519677, "min_gradient_pct": -0.3515762892161547 } ], "shape": { "ascent_concentration": 0.436, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 104.0, "shape_class": "sustained" }, "length_m": 919.3155396872097, "start_elevation_m": 1780.989190416019, "end_elevation_m": 1844.8535005151489, "endpoint_gain_m": 63.86431009912985, "overall_gradient_pct": 6.946941212465441, "accumulated_ascent_m": 69.3512669535437, "window_maxima": { "max_5m": { "gradient_pct": 22.38392446810394, "start_distance_m": 344.0, "end_distance_m": 349.0, "midpoint_distance_m": 346.5, "start_elevation_m": 1802.7240259330365, "end_elevation_m": 1803.8432221564417, "start_xy": [ 998134.2825025173, 6364159.14628098 ], "end_xy": [ 998134.7565166949, 6364164.123761322 ] }, "max_10m": { "gradient_pct": 21.90612113404086, "start_distance_m": 344.0, "end_distance_m": 354.0, "midpoint_distance_m": 349.0, "start_elevation_m": 1802.7240259330365, "end_elevation_m": 1804.9146380464406, "start_xy": [ 998134.2825025173, 6364159.14628098 ], "end_xy": [ 998135.6542378977, 6364169.024017875 ] }, "max_20m": { "gradient_pct": 20.858359461899454, "start_distance_m": 344.0, "end_distance_m": 364.0, "midpoint_distance_m": 354.0, "start_elevation_m": 1802.7240259330365, "end_elevation_m": 1806.8956978254164, "start_xy": [ 998134.2825025173, 6364159.14628098 ], "end_xy": [ 998136.0261727462, 6364178.87566826 ] }, "max_25m": { "gradient_pct": 20.814159489533267, "start_distance_m": 333.0, "end_distance_m": 358.0, "midpoint_distance_m": 345.5, "start_elevation_m": 1800.558173445399, "end_elevation_m": 1805.7617133177823, "start_xy": [ 998134.9753139166, 6364148.173304575 ], "end_xy": [ 998136.3371243989, 6364172.929835425 ] }, "max_50m": { "gradient_pct": 20.146740133921412, "start_distance_m": 325.0, "end_distance_m": 375.0, "midpoint_distance_m": 350.0, "start_elevation_m": 1798.9607263369376, "end_elevation_m": 1809.0340964038983, "start_xy": [ 998136.2574349894, 6364140.298823164 ], "end_xy": [ 998130.3013903692, 6364188.212164615 ] }, "max_100m": { "gradient_pct": 16.942944412170846, "start_distance_m": 287.0, "end_distance_m": 387.0, "midpoint_distance_m": 337.0, "start_elevation_m": 1793.3026944397968, "end_elevation_m": 1810.2456388519677, "start_xy": [ 998149.5281744925, 6364104.729039043 ], "end_xy": [ 998120.4942812243, 6364194.829942654 ] } }, "window_minima": { "min_5m": { "gradient_pct": -12.285569900086557, "start_distance_m": 586.0, "end_distance_m": 591.0, "midpoint_distance_m": 588.5, "start_elevation_m": 1826.0279542397332, "end_elevation_m": 1825.4136757447288, "start_xy": [ 998126.7265663892, 6364258.712895405 ], "end_xy": [ 998122.010507317, 6364257.089089787 ] }, "min_10m": { "gradient_pct": -11.711793325789586, "start_distance_m": 581.0, "end_distance_m": 591.0, "midpoint_distance_m": 586.0, "start_elevation_m": 1826.5848550773078, "end_elevation_m": 1825.4136757447288, "start_xy": [ 998131.3779121768, 6364260.545771008 ], "end_xy": [ 998122.010507317, 6364257.089089787 ] }, "min_20m": { "gradient_pct": -9.405313534163042, "start_distance_m": 577.0, "end_distance_m": 597.0, "midpoint_distance_m": 587.0, "start_elevation_m": 1826.8130123234591, "end_elevation_m": 1824.9319496166265, "start_xy": [ 998135.2196589182, 6364261.659764714 ], "end_xy": [ 998116.1421222783, 6364255.877456965 ] }, "min_25m": { "gradient_pct": -8.237202456081832, "start_distance_m": 573.0, "end_distance_m": 598.0, "midpoint_distance_m": 585.5, "start_elevation_m": 1826.9495121486382, "end_elevation_m": 1824.8902115346177, "start_xy": [ 998139.1786780445, 6364262.115654371 ], "end_xy": [ 998115.1457586061, 6364255.792254659 ] }, "min_50m": { "gradient_pct": -3.490463153154451, "start_distance_m": 844.0, "end_distance_m": 894.0, "midpoint_distance_m": 869.0, "start_elevation_m": 1846.032946555609, "end_elevation_m": 1844.2877149790318, "start_xy": [ 997957.6471331937, 6364430.476541649 ], "end_xy": [ 997922.8484433356, 6364465.824776739 ] }, "min_100m": { "gradient_pct": -0.3515762892161547, "start_distance_m": 819.0, "end_distance_m": 919.0, "midpoint_distance_m": 869.0, "start_elevation_m": 1845.200690377467, "end_elevation_m": 1844.8491140882509, "start_xy": [ 997978.8533100918, 6364417.495982611 ], "end_xy": [ 997911.7818889323, 6364488.086843801 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 25.69235047208167, "start_distance_m": 647.0, "end_distance_m": 649.0, "midpoint_distance_m": 648.0, "start_elevation_m": 1829.4078422015236, "end_elevation_m": 1829.9216892109653, "start_xy": [ 998083.7103108449, 6364287.278358098 ], "end_xy": [ 998082.774685975, 6364289.0460136365 ] }, "max_3m": { "gradient_pct": 24.48199277932872, "start_distance_m": 646.0, "end_distance_m": 649.0, "midpoint_distance_m": 647.5, "start_elevation_m": 1829.1872294275854, "end_elevation_m": 1829.9216892109653, "start_xy": [ 998084.1781232798, 6364286.394530329 ], "end_xy": [ 998082.774685975, 6364289.0460136365 ] } }, "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": 0.213, "obstruction_max_height_m": 21.02, "flagged_windows_m": [ 2, 3, 5, 10, 20, 25, 50, 100 ] }, "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_E997-N6364_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E998-N6364_0m5.tif" ], "calculated_at": "2026-09-17T02:26:35+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": [ "E997-N6364", "E998-N6364" ], "elevation_blocks": [ "21LHD8RO@2025-04-02" ], "ign_dalles": [ "LHD_FXX_0997_6365_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0998_6365_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD8RO" ], "ign_editions": [ "2025-04-02" ], "ign_dsm_edition": { "LHD_FXX_0997_6365_MNT_O_0M50_LAMB93_IGN69": "2025-04-02", "LHD_FXX_0998_6365_MNT_O_0M50_LAMB93_IGN69": "2025-04-02" }, "climb_origin": "discovered", "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked", "carriageway": { "stations": 43, "stations_resolved": 43, "width_median_m": 4.5, "width_p10_m": 2.3, "width_min_m": 2.0, "width_max_m": 9.5, "bounded_share": 0.442, "unbounded_share": 0.558, "confidence_median": 0.0, "width_median_bounded_m": 4.25, "window_m": [ 333.0, 358.0 ], "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": 43, "stations_resolved": 43, "width_median_m": 4.5, "width_p10_m": 1.25, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.86, "unbounded_share": 0.14, "confidence_median": 1.0, "width_median_bounded_m": 3.75, "window_m": [ 333.0, 358.0 ], "width_at_max25_m": 2.0, "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": "Uvernet-Fours", "county": "Alpes-de-Haute-Provence", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }