{ "ocl_version": "0.1.0", "name": "Route du Villaret", "slug": "route-du-villaret-2-2", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 28.02449425664122, "diagnostic": true, "flags": [], "start_distance_m": 8671.0, "end_distance_m": 8673.0, "start_elevation_m": 1009.0231556523163, "end_elevation_m": 1009.5836455374491, "min_gradient_pct": -8.482391439423509 }, { "window_m": 3.0, "max_gradient_pct": 27.554425145808636, "diagnostic": true, "flags": [], "start_distance_m": 8671.0, "end_distance_m": 8674.0, "start_elevation_m": 1009.0231556523163, "end_elevation_m": 1009.8497884066905, "min_gradient_pct": -7.854322992739071 }, { "window_m": 5.0, "max_gradient_pct": 26.81587827224348, "diagnostic": false, "flags": [], "start_distance_m": 8670.0, "end_distance_m": 8675.0, "start_elevation_m": 1008.7750390372495, "end_elevation_m": 1010.1158329508617, "min_gradient_pct": -7.499171945478338 }, { "window_m": 10.0, "max_gradient_pct": 25.426200728130652, "diagnostic": false, "flags": [], "start_distance_m": 8669.0, "end_distance_m": 8679.0, "start_elevation_m": 1008.5378581373693, "end_elevation_m": 1011.0804782101824, "min_gradient_pct": -7.329204487290326 }, { "window_m": 20.0, "max_gradient_pct": 23.870678131207228, "diagnostic": false, "flags": [], "start_distance_m": 8670.0, "end_distance_m": 8690.0, "start_elevation_m": 1008.7750390372495, "end_elevation_m": 1013.5491746634909, "min_gradient_pct": -6.792995913975801 }, { "window_m": 25.0, "max_gradient_pct": 23.60484352773892, "diagnostic": false, "flags": [], "start_distance_m": 8669.0, "end_distance_m": 8694.0, "start_elevation_m": 1008.5378581373693, "end_elevation_m": 1014.439069019304, "min_gradient_pct": -6.469358486422152 }, { "window_m": 50.0, "max_gradient_pct": 20.29720921440753, "diagnostic": false, "flags": [], "start_distance_m": 8431.0, "end_distance_m": 8481.0, "start_elevation_m": 982.7772185284, "end_elevation_m": 992.9258231356038, "min_gradient_pct": -5.622411366870438 }, { "window_m": 100.0, "max_gradient_pct": 16.612173324433343, "diagnostic": false, "flags": [], "start_distance_m": 8419.0, "end_distance_m": 8519.0, "start_elevation_m": 981.3553889270979, "end_elevation_m": 997.9675622515313, "min_gradient_pct": -4.560077449152345 } ], "shape": { "ascent_concentration": 0.27, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 99.0, "shape_class": "sustained" }, "length_m": 9041.891513904167, "start_elevation_m": 325.95576702782466, "end_elevation_m": 1033.2922369921894, "endpoint_gain_m": 707.3364699643647, "overall_gradient_pct": 7.8228816268881145, "accumulated_ascent_m": 712.4858963858168, "window_maxima": { "max_5m": { "gradient_pct": 26.81587827224348, "start_distance_m": 8670.0, "end_distance_m": 8675.0, "midpoint_distance_m": 8672.5, "start_elevation_m": 1008.7750390372495, "end_elevation_m": 1010.1158329508617, "start_xy": [ 960576.8449969226, 6497070.392970721 ], "end_xy": [ 960577.650297294, 6497075.327693695 ] }, "max_10m": { "gradient_pct": 25.426200728130652, "start_distance_m": 8669.0, "end_distance_m": 8679.0, "midpoint_distance_m": 8674.0, "start_elevation_m": 1008.5378581373693, "end_elevation_m": 1011.0804782101824, "start_xy": [ 960576.740468072, 6497069.398448867 ], "end_xy": [ 960578.2945389225, 6497079.275471897 ] }, "max_20m": { "gradient_pct": 23.870678131207228, "start_distance_m": 8670.0, "end_distance_m": 8690.0, "midpoint_distance_m": 8680.0, "start_elevation_m": 1008.7750390372495, "end_elevation_m": 1013.5491746634909, "start_xy": [ 960576.8449969226, 6497070.392970721 ], "end_xy": [ 960580.0662034011, 6497090.131861949 ] }, "max_25m": { "gradient_pct": 23.60484352773892, "start_distance_m": 8669.0, "end_distance_m": 8694.0, "midpoint_distance_m": 8681.5, "start_elevation_m": 1008.5378581373693, "end_elevation_m": 1014.439069019304, "start_xy": [ 960576.740468072, 6497069.398448867 ], "end_xy": [ 960580.8190293241, 6497094.0551085 ] }, "max_50m": { "gradient_pct": 20.29720921440753, "start_distance_m": 8431.0, "end_distance_m": 8481.0, "midpoint_distance_m": 8456.0, "start_elevation_m": 982.7772185284, "end_elevation_m": 992.9258231356038, "start_xy": [ 960465.1570811458, 6496951.287349906 ], "end_xy": [ 960505.4315888014, 6496980.917807768 ] }, "max_100m": { "gradient_pct": 16.612173324433343, "start_distance_m": 8419.0, "end_distance_m": 8519.0, "midpoint_distance_m": 8469.0, "start_elevation_m": 981.3553889270979, "end_elevation_m": 997.9675622515313, "start_xy": [ 960453.8325841888, 6496947.671027885 ], "end_xy": [ 960535.9419484971, 6497003.230746952 ] } }, "window_minima": { "min_5m": { "gradient_pct": -7.499171945478338, "start_distance_m": 8201.0, "end_distance_m": 8206.0, "midpoint_distance_m": 8203.5, "start_elevation_m": 972.7686143420698, "end_elevation_m": 972.3936557447959, "start_xy": [ 960250.7687180715, 6496878.266838529 ], "end_xy": [ 960255.583711014, 6496879.588079247 ] }, "min_10m": { "gradient_pct": -7.329204487290326, "start_distance_m": 8196.0, "end_distance_m": 8206.0, "midpoint_distance_m": 8201.0, "start_elevation_m": 973.1265761935249, "end_elevation_m": 972.3936557447959, "start_xy": [ 960245.8980869914, 6496877.160995652 ], "end_xy": [ 960255.583711014, 6496879.588079247 ] }, "min_20m": { "gradient_pct": -6.792995913975801, "start_distance_m": 8190.0, "end_distance_m": 8210.0, "midpoint_distance_m": 8200.0, "start_elevation_m": 973.49260577015, "end_elevation_m": 972.1340065873549, "start_xy": [ 960239.9794827178, 6496876.176047199 ], "end_xy": [ 960258.7923537655, 6496881.9765121415 ] }, "min_25m": { "gradient_pct": -6.469358486422152, "start_distance_m": 8190.0, "end_distance_m": 8215.0, "midpoint_distance_m": 8202.5, "start_elevation_m": 973.49260577015, "end_elevation_m": 971.8752661485445, "start_xy": [ 960239.9794827178, 6496876.176047199 ], "end_xy": [ 960262.8031572048, 6496884.962053261 ] }, "min_50m": { "gradient_pct": -5.622411366870438, "start_distance_m": 8170.0, "end_distance_m": 8220.0, "midpoint_distance_m": 8195.0, "start_elevation_m": 974.4501696641781, "end_elevation_m": 971.6389639807429, "start_xy": [ 960220.0353068132, 6496874.690216118 ], "end_xy": [ 960266.8139606441, 6496887.947594379 ] }, "min_100m": { "gradient_pct": -4.560077449152345, "start_distance_m": 8128.0, "end_distance_m": 8228.0, "midpoint_distance_m": 8178.0, "start_elevation_m": 975.9923282194902, "end_elevation_m": 971.4322507703379, "start_xy": [ 960182.1625428215, 6496883.441934009 ], "end_xy": [ 960273.2312461471, 6496892.724460169 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 28.02449425664122, "start_distance_m": 8671.0, "end_distance_m": 8673.0, "midpoint_distance_m": 8672.0, "start_elevation_m": 1009.0231556523163, "end_elevation_m": 1009.5836455374491, "start_xy": [ 960577.0060556654, 6497071.3799154945 ], "end_xy": [ 960577.3281764797, 6497073.353804595 ] }, "max_3m": { "gradient_pct": 27.554425145808636, "start_distance_m": 8671.0, "end_distance_m": 8674.0, "midpoint_distance_m": 8672.5, "start_elevation_m": 1009.0231556523163, "end_elevation_m": 1009.8497884066905, "start_xy": [ 960577.0060556654, 6497071.3799154945 ], "end_xy": [ 960577.4892368868, 6497074.3407491455 ] } }, "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": 0.003, "windows_resited": [], "windows_unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.247, "obstruction_max_height_m": 30.53, "flagged_windows_m": [] }, "excluded_ranges_m": [ [ 4301.0, 4325.0 ] ], "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_E958-N6497_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E958-N6498_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E959-N6496_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E959-N6497_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E959-N6498_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E960-N6496_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E960-N6497_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E960-N6498_0m5.tif" ], "calculated_at": "2026-09-17T04:17:12+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": [ "E958-N6497", "E958-N6498", "E959-N6496", "E959-N6497", "E959-N6498", "E960-N6496", "E960-N6497", "E960-N6498" ], "elevation_blocks": [ "21LHD5QL2@2025-03-26" ], "ign_dalles": [ "LHD_FXX_0958_6498_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0958_6499_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0959_6497_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0959_6498_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0959_6499_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0960_6497_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0960_6498_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0960_6499_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD5QL2" ], "ign_editions": [ "2025-03-26" ], "ign_dsm_edition": { "LHD_FXX_0958_6498_MNT_O_0M50_LAMB93_IGN69": "2025-03-26", "LHD_FXX_0958_6499_MNT_O_0M50_LAMB93_IGN69": "2025-03-26", "LHD_FXX_0959_6497_MNT_O_0M50_LAMB93_IGN69": "2025-03-26", "LHD_FXX_0959_6498_MNT_O_0M50_LAMB93_IGN69": "2025-03-26", "LHD_FXX_0959_6499_MNT_O_0M50_LAMB93_IGN69": "2025-03-26", "LHD_FXX_0960_6497_MNT_O_0M50_LAMB93_IGN69": "2025-03-26", "LHD_FXX_0960_6498_MNT_O_0M50_LAMB93_IGN69": "2025-03-26", "LHD_FXX_0960_6499_MNT_O_0M50_LAMB93_IGN69": "2025-03-26" }, "climb_origin": "discovered", "structure_own_ways": 13, "structure_mask_ranges_m": [ [ 4306.7, 4320.7 ] ], "carriageway": { "stations": 368, "stations_resolved": 368, "width_median_m": 6.25, "width_p10_m": 4.25, "width_min_m": 2.5, "width_max_m": 12.0, "bounded_share": 0.503, "unbounded_share": 0.497, "confidence_median": 0.502, "width_median_bounded_m": 6.0, "window_m": [ 8669.0, 8694.0 ], "width_at_max25_m": 3.25, "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": 368, "stations_resolved": 368, "width_median_m": 4.62, "width_p10_m": 0.5, "width_min_m": 0.0, "width_max_m": 12.0, "bounded_share": 0.883, "unbounded_share": 0.117, "confidence_median": 1.0, "width_median_bounded_m": 3.75, "window_m": [ 8669.0, 8694.0 ], "width_at_max25_m": 4.0, "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": "Val-d'Arc", "county": "Savoie", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }