{ "ocl_version": "0.1.0", "name": "Route de Pr\u00e9 Genty", "slug": "route-de-pre-genty", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 18.917939449340793, "diagnostic": true, "flags": [], "start_distance_m": 5264.0, "end_distance_m": 5266.0, "start_elevation_m": 1250.4603745091117, "end_elevation_m": 1250.8387332980985, "min_gradient_pct": -44.445120076716194 }, { "window_m": 3.0, "max_gradient_pct": 15.885642222959481, "diagnostic": true, "flags": [], "start_distance_m": 5264.0, "end_distance_m": 5267.0, "start_elevation_m": 1250.4603745091117, "end_elevation_m": 1250.9369437758005, "min_gradient_pct": -39.15014899492538 }, { "window_m": 5.0, "max_gradient_pct": 13.973310497158309, "diagnostic": false, "flags": [], "start_distance_m": 5264.0, "end_distance_m": 5269.0, "start_elevation_m": 1250.4603745091117, "end_elevation_m": 1251.1590400339696, "min_gradient_pct": -24.4629225739709 }, { "window_m": 10.0, "max_gradient_pct": 12.997388233336551, "diagnostic": false, "flags": [], "start_distance_m": 5264.0, "end_distance_m": 5274.0, "start_elevation_m": 1250.4603745091117, "end_elevation_m": 1251.7601133324454, "min_gradient_pct": -11.929383718961617 }, { "window_m": 20.0, "max_gradient_pct": 12.08199882716599, "diagnostic": false, "flags": [], "start_distance_m": 5251.0, "end_distance_m": 5271.0, "start_elevation_m": 1249.0118702851655, "end_elevation_m": 1251.4282700505987, "min_gradient_pct": -6.242751341370649 }, { "window_m": 25.0, "max_gradient_pct": 11.909248834963364, "diagnostic": false, "flags": [], "start_distance_m": 5258.0, "end_distance_m": 5283.0, "start_elevation_m": 1249.8017215938553, "end_elevation_m": 1252.7790338025961, "min_gradient_pct": -5.034634952232409 }, { "window_m": 50.0, "max_gradient_pct": 11.71064273613274, "diagnostic": false, "flags": [], "start_distance_m": 5230.0, "end_distance_m": 5280.0, "start_elevation_m": 1246.5698969185287, "end_elevation_m": 1252.425218286595, "min_gradient_pct": -4.165149275548629 }, { "window_m": 100.0, "max_gradient_pct": 11.572403490892839, "diagnostic": false, "flags": [], "start_distance_m": 5171.0, "end_distance_m": 5271.0, "start_elevation_m": 1239.8558665597059, "end_elevation_m": 1251.4282700505987, "min_gradient_pct": -2.3247611934484667 } ], "shape": { "ascent_concentration": 0.294, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 177.0, "shape_class": "sustained" }, "length_m": 7513.705257155401, "start_elevation_m": 848.8486899689933, "end_elevation_m": 1400.4532829198142, "endpoint_gain_m": 551.6045929508209, "overall_gradient_pct": 7.341312629019092, "accumulated_ascent_m": 556.9398460222578, "window_maxima": { "max_5m": { "gradient_pct": 13.973310497158309, "start_distance_m": 5264.0, "end_distance_m": 5269.0, "midpoint_distance_m": 5266.5, "start_elevation_m": 1250.4603745091117, "end_elevation_m": 1251.1590400339696, "start_xy": [ 940957.2330530758, 6453341.537942596 ], "end_xy": [ 940961.7392591801, 6453339.3713539075 ] }, "max_10m": { "gradient_pct": 12.997388233336551, "start_distance_m": 5264.0, "end_distance_m": 5274.0, "midpoint_distance_m": 5269.0, "start_elevation_m": 1250.4603745091117, "end_elevation_m": 1251.7601133324454, "start_xy": [ 940957.2330530758, 6453341.537942596 ], "end_xy": [ 940966.2454652846, 6453337.204765219 ] }, "max_20m": { "gradient_pct": 12.08199882716599, "start_distance_m": 5251.0, "end_distance_m": 5271.0, "midpoint_distance_m": 5261.0, "start_elevation_m": 1249.0118702851655, "end_elevation_m": 1251.4282700505987, "start_xy": [ 940945.5169172045, 6453347.171073186 ], "end_xy": [ 940963.5417416219, 6453338.504718432 ] }, "max_25m": { "gradient_pct": 11.909248834963364, "start_distance_m": 5258.0, "end_distance_m": 5283.0, "midpoint_distance_m": 5270.5, "start_elevation_m": 1249.8017215938553, "end_elevation_m": 1252.7790338025961, "start_xy": [ 940951.8256057505, 6453344.137849022 ], "end_xy": [ 940974.3858066289, 6453333.366724445 ] }, "max_50m": { "gradient_pct": 11.71064273613274, "start_distance_m": 5230.0, "end_distance_m": 5280.0, "midpoint_distance_m": 5255.0, "start_elevation_m": 1246.5698969185287, "end_elevation_m": 1252.425218286595, "start_xy": [ 940926.9876480373, 6453356.990853945 ], "end_xy": [ 940971.6634407153, 6453334.627170332 ] }, "max_100m": { "gradient_pct": 11.572403490892839, "start_distance_m": 5171.0, "end_distance_m": 5271.0, "midpoint_distance_m": 5221.0, "start_elevation_m": 1239.8558665597059, "end_elevation_m": 1251.4282700505987, "start_xy": [ 940876.1681497567, 6453386.871576838 ], "end_xy": [ 940963.5417416219, 6453338.504718432 ] } }, "window_minima": { "min_5m": { "gradient_pct": -24.4629225739709, "start_distance_m": 7508.0, "end_distance_m": 7513.0, "midpoint_distance_m": 7510.5, "start_elevation_m": 1401.7818671059647, "end_elevation_m": 1400.5587209772661, "start_xy": [ 941661.462564211, 6452614.01416299 ], "end_xy": [ 941663.9606424845, 6452609.68292703 ] }, "min_10m": { "gradient_pct": -11.929383718961617, "start_distance_m": 7503.0, "end_distance_m": 7513.0, "midpoint_distance_m": 7508.0, "start_elevation_m": 1401.7516593491623, "end_elevation_m": 1400.5587209772661, "start_xy": [ 941658.9720734869, 6452618.34975813 ], "end_xy": [ 941663.9606424845, 6452609.68292703 ] }, "min_20m": { "gradient_pct": -6.242751341370649, "start_distance_m": 7493.0, "end_distance_m": 7513.0, "midpoint_distance_m": 7503.0, "start_elevation_m": 1401.8072712455403, "end_elevation_m": 1400.5587209772661, "start_xy": [ 941654.005110759, 6452627.0290024085 ], "end_xy": [ 941663.9606424845, 6452609.68292703 ] }, "min_25m": { "gradient_pct": -5.034634952232409, "start_distance_m": 5882.0, "end_distance_m": 5907.0, "midpoint_distance_m": 5894.5, "start_elevation_m": 1301.5126703414014, "end_elevation_m": 1300.2540116033433, "start_xy": [ 941547.9872766818, 6453237.790539234 ], "end_xy": [ 941568.1914932468, 6453223.714530874 ] }, "min_50m": { "gradient_pct": -4.165149275548629, "start_distance_m": 5869.0, "end_distance_m": 5919.0, "midpoint_distance_m": 5894.0, "start_elevation_m": 1301.9098651534046, "end_elevation_m": 1299.8272905156302, "start_xy": [ 941535.2303489387, 6453240.254063254 ], "end_xy": [ 941575.0909493921, 6453213.921963216 ] }, "min_100m": { "gradient_pct": -2.3247611934484667, "start_distance_m": 5843.0, "end_distance_m": 5943.0, "midpoint_distance_m": 5893.0, "start_elevation_m": 1301.913339746307, "end_elevation_m": 1299.5885785528585, "start_xy": [ 941509.3758323244, 6453242.869704026 ], "end_xy": [ 941581.7505232134, 6453191.187775762 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 18.917939449340793, "start_distance_m": 5264.0, "end_distance_m": 5266.0, "midpoint_distance_m": 5265.0, "start_elevation_m": 1250.4603745091117, "end_elevation_m": 1250.8387332980985, "start_xy": [ 940957.2330530758, 6453341.537942596 ], "end_xy": [ 940959.0355355176, 6453340.6713071205 ] }, "max_3m": { "gradient_pct": 15.885642222959481, "start_distance_m": 5264.0, "end_distance_m": 5267.0, "midpoint_distance_m": 5265.5, "start_elevation_m": 1250.4603745091117, "end_elevation_m": 1250.9369437758005, "start_xy": [ 940957.2330530758, 6453341.537942596 ], "end_xy": [ 940959.9367767385, 6453340.237989383 ] } }, "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": 0.007, "obstruction_max_height_m": 18.52, "flagged_windows_m": [] }, "review": [], "extent": [ "descends_at_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_E939-N6453_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E940-N6452_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E940-N6453_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E940-N6454_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E941-N6452_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E941-N6453_0m5.tif" ], "calculated_at": "2026-09-17T03:44:35+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": [ "E939-N6453", "E940-N6452", "E940-N6453", "E940-N6454", "E941-N6452", "E941-N6453" ], "elevation_blocks": [ "21LHD6QM@2025-02-20" ], "ign_dalles": [ "LHD_FXX_0939_6454_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0940_6453_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0940_6454_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0940_6455_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0941_6453_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0941_6454_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD6QM" ], "ign_editions": [ "2025-02-20" ], "ign_dsm_edition": { "LHD_FXX_0939_6454_MNT_O_0M50_LAMB93_IGN69": "2025-02-20", "LHD_FXX_0940_6453_MNT_O_0M50_LAMB93_IGN69": "2025-02-20", "LHD_FXX_0940_6454_MNT_O_0M50_LAMB93_IGN69": "2025-02-20", "LHD_FXX_0940_6455_MNT_O_0M50_LAMB93_IGN69": "2025-02-20", "LHD_FXX_0941_6453_MNT_O_0M50_LAMB93_IGN69": "2025-02-20", "LHD_FXX_0941_6454_MNT_O_0M50_LAMB93_IGN69": "2025-02-20" }, "climb_origin": "discovered", "structure_own_ways": 7, "carriageway": { "stations": 307, "stations_resolved": 307, "width_median_m": 7.5, "width_p10_m": 5.75, "width_min_m": 3.75, "width_max_m": 12.0, "bounded_share": 0.459, "unbounded_share": 0.541, "confidence_median": 0.0, "width_median_bounded_m": 7.25, "window_m": [ 5258.0, 5283.0 ], "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": 307, "stations_resolved": 307, "width_median_m": 8.75, "width_p10_m": 6.0, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.678, "unbounded_share": 0.322, "confidence_median": 1.0, "width_median_bounded_m": 8.0, "window_m": [ 5258.0, 5283.0 ], "width_at_max25_m": 7.0, "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": "Oz", "county": "Is\u00e8re", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }