{ "ocl_version": "0.1.0", "name": "Discovered lane (44.5339, 6.7869)", "slug": "discovered-lane-44-5339-6-7869", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 27.590206169577414, "diagnostic": true, "flags": [ "structure_excluded", "canopy_or_structure" ], "start_distance_m": 602.0, "end_distance_m": 604.0, "start_elevation_m": 1685.3078360151233, "end_elevation_m": 1685.8596401385148, "min_gradient_pct": -928.4166498632885, "suppressed_max_gradient_pct": 1294.0339912436912, "suppressed_location_m": [ 3.0, 5.0 ] }, { "window_m": 3.0, "max_gradient_pct": 26.9883590704391, "diagnostic": true, "flags": [ "structure_excluded", "canopy_or_structure" ], "start_distance_m": 602.0, "end_distance_m": 605.0, "start_elevation_m": 1685.3078360151233, "end_elevation_m": 1686.1174867872364, "min_gradient_pct": -306.6805979409082, "suppressed_max_gradient_pct": 862.1897310268045, "suppressed_location_m": [ 3.0, 6.0 ] }, { "window_m": 5.0, "max_gradient_pct": 25.427871949982546, "diagnostic": false, "flags": [ "structure_excluded", "canopy_or_structure" ], "start_distance_m": 601.0, "end_distance_m": 606.0, "start_elevation_m": 1685.0569069226908, "end_elevation_m": 1686.32830052019, "min_gradient_pct": -236.1607738611383, "suppressed_max_gradient_pct": 516.6308815126376, "suppressed_location_m": [ 3.0, 8.0 ] }, { "window_m": 10.0, "max_gradient_pct": 22.012501581191373, "diagnostic": false, "flags": [ "structure_excluded", "canopy_or_structure" ], "start_distance_m": 598.0, "end_distance_m": 608.0, "start_elevation_m": 1684.4741349929416, "end_elevation_m": 1686.6753851510607, "min_gradient_pct": -157.31386760272017, "suppressed_max_gradient_pct": 259.11050762167633, "suppressed_location_m": [ 3.0, 13.0 ] }, { "window_m": 20.0, "max_gradient_pct": 16.827382326946463, "diagnostic": false, "flags": [ "structure_excluded", "canopy_or_structure" ], "start_distance_m": 592.0, "end_distance_m": 612.0, "start_elevation_m": 1683.7738979563237, "end_elevation_m": 1687.139374421713, "min_gradient_pct": -78.78903701428158, "suppressed_max_gradient_pct": 131.2051284363872, "suppressed_location_m": [ 3.0, 23.0 ] }, { "window_m": 25.0, "max_gradient_pct": 15.460797676913899, "diagnostic": false, "flags": [ "structure_excluded", "canopy_or_structure" ], "start_distance_m": 585.0, "end_distance_m": 610.0, "start_elevation_m": 1683.0471556563102, "end_elevation_m": 1686.9123550755387, "min_gradient_pct": -67.9565142684487, "suppressed_max_gradient_pct": 106.11651934535712, "suppressed_location_m": [ 3.0, 28.0 ] }, { "window_m": 50.0, "max_gradient_pct": 13.681759828348277, "diagnostic": false, "flags": [ "structure_excluded" ], "start_distance_m": 1918.0, "end_distance_m": 1968.0, "start_elevation_m": 1805.7038291569904, "end_elevation_m": 1812.5447090711646, "min_gradient_pct": -30.080549914534913, "suppressed_max_gradient_pct": 57.9499713315181, "suppressed_location_m": [ 3.0, 53.0 ] }, { "window_m": 100.0, "max_gradient_pct": 12.3907047786347, "diagnostic": false, "flags": [ "structure_excluded" ], "start_distance_m": 1878.0, "end_distance_m": 1978.0, "start_elevation_m": 1801.0868039566644, "end_elevation_m": 1813.4775087352991, "min_gradient_pct": -10.932147545749103, "suppressed_max_gradient_pct": 34.07301076256272, "suppressed_location_m": [ 3.0, 103.0 ] } ], "shape": { "ascent_concentration": 0.401, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 92.0, "shape_class": "sustained" }, "length_m": 2552.1274120067014, "start_elevation_m": 1604.0156660095822, "end_elevation_m": 1872.0375075634454, "endpoint_gain_m": 268.02184155386317, "overall_gradient_pct": 10.50189893705665, "accumulated_ascent_m": 309.2315451033885, "window_maxima": { "max_5m": { "gradient_pct": 25.427871949982546, "start_distance_m": 601.0, "end_distance_m": 606.0, "midpoint_distance_m": 603.5, "start_elevation_m": 1685.0569069226908, "end_elevation_m": 1686.32830052019, "start_xy": [ 1000878.315428898, 6388634.121516798 ], "end_xy": [ 1000877.0863422499, 6388629.284654423 ] }, "max_10m": { "gradient_pct": 22.012501581191373, "start_distance_m": 598.0, "end_distance_m": 608.0, "midpoint_distance_m": 603.0, "start_elevation_m": 1684.4741349929416, "end_elevation_m": 1686.6753851510607, "start_xy": [ 1000878.9336835394, 6388637.057119154 ], "end_xy": [ 1000876.4190830274, 6388627.399245944 ] }, "max_20m": { "gradient_pct": 16.827382326946463, "start_distance_m": 592.0, "end_distance_m": 612.0, "midpoint_distance_m": 602.0, "start_elevation_m": 1683.7738979563237, "end_elevation_m": 1687.139374421713, "start_xy": [ 1000880.1701928221, 6388642.928323869 ], "end_xy": [ 1000875.0845645826, 6388623.628428987 ] }, "max_25m": { "gradient_pct": 15.460797676913899, "start_distance_m": 585.0, "end_distance_m": 610.0, "midpoint_distance_m": 597.5, "start_elevation_m": 1683.0471556563102, "end_elevation_m": 1686.9123550755387, "start_xy": [ 1000880.9168296894, 6388649.8817178495 ], "end_xy": [ 1000875.751823805, 6388625.513837466 ] }, "max_50m": { "gradient_pct": 13.681759828348277, "start_distance_m": 1918.0, "end_distance_m": 1968.0, "midpoint_distance_m": 1943.0, "start_elevation_m": 1805.7038291569904, "end_elevation_m": 1812.5447090711646, "start_xy": [ 1001210.4130593408, 6388258.846986822 ], "end_xy": [ 1001198.4868428297, 6388210.509236327 ] }, "max_100m": { "gradient_pct": 12.3907047786347, "start_distance_m": 1878.0, "end_distance_m": 1978.0, "midpoint_distance_m": 1928.0, "start_elevation_m": 1801.0868039566644, "end_elevation_m": 1813.4775087352991, "start_xy": [ 1001204.0160323408, 6388295.6954290215 ], "end_xy": [ 1001196.9991400056, 6388200.620518498 ] } }, "window_minima": { "min_5m": { "gradient_pct": -236.1607738611383, "start_distance_m": 88.0, "end_distance_m": 93.0, "midpoint_distance_m": 90.5, "start_elevation_m": 1645.8876875992964, "end_elevation_m": 1634.0796489062395, "start_xy": [ 1000670.5929771693, 6389041.094745648 ], "end_xy": [ 1000668.0936029624, 6389036.804076703 ] }, "min_10m": { "gradient_pct": -157.31386760272017, "start_distance_m": 83.0, "end_distance_m": 93.0, "midpoint_distance_m": 88.0, "start_elevation_m": 1649.8110356665115, "end_elevation_m": 1634.0796489062395, "start_xy": [ 1000673.4320557563, 6389045.210524162 ], "end_xy": [ 1000668.0936029624, 6389036.804076703 ] }, "min_20m": { "gradient_pct": -78.78903701428158, "start_distance_m": 82.0, "end_distance_m": 102.0, "midpoint_distance_m": 92.0, "start_elevation_m": 1650.2095552753967, "end_elevation_m": 1634.4517478725404, "start_xy": [ 1000673.9998714736, 6389046.033679865 ], "end_xy": [ 1000666.3214090299, 6389028.159322979 ] }, "min_25m": { "gradient_pct": -67.9565142684487, "start_distance_m": 69.0, "end_distance_m": 94.0, "midpoint_distance_m": 81.5, "start_elevation_m": 1650.9140604554111, "end_elevation_m": 1633.924931888299, "start_xy": [ 1000681.3814757997, 6389056.734704002 ], "end_xy": [ 1000667.7534925495, 6389035.863691193 ] }, "min_50m": { "gradient_pct": -30.080549914534913, "start_distance_m": 66.0, "end_distance_m": 116.0, "midpoint_distance_m": 91.0, "start_elevation_m": 1650.8977845720167, "end_elevation_m": 1635.8575096147492, "start_xy": [ 1000683.084922952, 6389059.204171111 ], "end_xy": [ 1000667.2663277604, 6389014.191247643 ] }, "min_100m": { "gradient_pct": -10.932147545749103, "start_distance_m": 66.0, "end_distance_m": 166.0, "midpoint_distance_m": 116.0, "start_elevation_m": 1650.8977845720167, "end_elevation_m": 1639.9656370262676, "start_xy": [ 1000683.084922952, 6389059.204171111 ], "end_xy": [ 1000678.0232860462, 6388965.410857206 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 27.590206169577414, "start_distance_m": 602.0, "end_distance_m": 604.0, "midpoint_distance_m": 603.0, "start_elevation_m": 1685.3078360151233, "end_elevation_m": 1685.8596401385148, "start_xy": [ 1000878.1093440175, 6388633.1429826785 ], "end_xy": [ 1000877.6971742566, 6388631.185914441 ] }, "max_3m": { "gradient_pct": 26.9883590704391, "start_distance_m": 602.0, "end_distance_m": 605.0, "midpoint_distance_m": 603.5, "start_elevation_m": 1685.3078360151233, "end_elevation_m": 1686.1174867872364, "start_xy": [ 1000878.1093440175, 6388633.1429826785 ], "end_xy": [ 1000877.4199718611, 6388630.227358662 ] } }, "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": 0.021, "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": 0.072, "obstruction_max_height_m": 25.87, "flagged_windows_m": [ 2, 3, 5, 10, 20, 25 ] }, "excluded_ranges_m": [ [ 0.0, 9.0 ], [ 58.0, 95.0 ], [ 1244.0, 1249.0 ] ], "review": [], "extent": [ "may_start_earlier", "may_continue_beyond_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_E1000-N6388_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E1000-N6389_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E1001-N6387_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E1001-N6388_0m5.tif" ], "calculated_at": "2026-09-17T02:43:18+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": [ "E1000-N6388", "E1000-N6389", "E1001-N6387", "E1001-N6388" ], "elevation_blocks": [ "21LHD8RN@2025-03-15" ], "ign_dalles": [ "LHD_FXX_1000_6389_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_1000_6390_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_1001_6388_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_1001_6389_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD8RN" ], "ign_editions": [ "2025-03-15" ], "ign_dsm_edition": { "LHD_FXX_1000_6389_MNT_O_0M50_LAMB93_IGN69": "2025-03-15", "LHD_FXX_1000_6390_MNT_O_0M50_LAMB93_IGN69": "2025-03-15", "LHD_FXX_1001_6388_MNT_O_0M50_LAMB93_IGN69": "2025-03-15", "LHD_FXX_1001_6389_MNT_O_0M50_LAMB93_IGN69": "2025-03-15" }, "climb_origin": "discovered", "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked", "carriageway": { "stations": 108, "stations_resolved": 108, "width_median_m": 4.5, "width_p10_m": 2.93, "width_min_m": 0.5, "width_max_m": 10.25, "bounded_share": 0.639, "unbounded_share": 0.361, "confidence_median": 0.765, "width_median_bounded_m": 4.75, "window_m": [ 585.0, 610.0 ], "width_at_max25_m": 3.75, "window_stations": 6, "single_track": true, "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": 108, "stations_resolved": 108, "width_median_m": 5.25, "width_p10_m": 1.0, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.944, "unbounded_share": 0.056, "confidence_median": 1.0, "width_median_bounded_m": 5.12, "window_m": [ 585.0, 610.0 ], "width_at_max25_m": 1.0, "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-Paul-sur-Ubaye", "county": "Alpes-de-Haute-Provence", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }