{ "ocl_version": "0.1.0", "name": "Col de la Colombi\u00e8re from the north-east side", "slug": "col-de-la-colombiere-from-the-north-east-side", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 20.165476272302385, "diagnostic": true, "flags": [], "start_distance_m": 1445.0, "end_distance_m": 1447.0, "start_elevation_m": 1220.7705279255604, "end_elevation_m": 1221.1738374510064, "min_gradient_pct": -4.55652156593942 }, { "window_m": 3.0, "max_gradient_pct": 18.888840568327698, "diagnostic": true, "flags": [], "start_distance_m": 1446.0, "end_distance_m": 1449.0, "start_elevation_m": 1220.950241519719, "end_elevation_m": 1221.5169067367688, "min_gradient_pct": -4.022152129800816 }, { "window_m": 5.0, "max_gradient_pct": 18.895170064406557, "diagnostic": false, "flags": [], "start_distance_m": 1446.0, "end_distance_m": 1451.0, "start_elevation_m": 1220.950241519719, "end_elevation_m": 1221.8950000229393, "min_gradient_pct": -3.624185532876254 }, { "window_m": 10.0, "max_gradient_pct": 17.572098832804386, "diagnostic": false, "flags": [], "start_distance_m": 1444.0, "end_distance_m": 1454.0, "start_elevation_m": 1220.6132667952527, "end_elevation_m": 1222.3704766785331, "min_gradient_pct": -2.8476573349712453 }, { "window_m": 20.0, "max_gradient_pct": 16.690535485607825, "diagnostic": false, "flags": [], "start_distance_m": 1442.0, "end_distance_m": 1462.0, "start_elevation_m": 1220.3226301247694, "end_elevation_m": 1223.660737221891, "min_gradient_pct": -1.122674471882874 }, { "window_m": 25.0, "max_gradient_pct": 16.101890783800627, "diagnostic": false, "flags": [], "start_distance_m": 1440.0, "end_distance_m": 1465.0, "start_elevation_m": 1220.0472752348303, "end_elevation_m": 1224.0727479307805, "min_gradient_pct": -0.34871834296063753 }, { "window_m": 50.0, "max_gradient_pct": 13.714468627738825, "diagnostic": false, "flags": [], "start_distance_m": 1420.0, "end_distance_m": 1470.0, "start_elevation_m": 1217.7229280598938, "end_elevation_m": 1224.5801623737632, "min_gradient_pct": 2.587344448595559 }, { "window_m": 100.0, "max_gradient_pct": 12.845313736317848, "diagnostic": false, "flags": [], "start_distance_m": 1368.0, "end_distance_m": 1468.0, "start_elevation_m": 1211.5487631844612, "end_elevation_m": 1224.394076920779, "min_gradient_pct": 2.8400855646507353 } ], "shape": { "ascent_concentration": 0.294, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 179.0, "shape_class": "sustained" }, "length_m": 5716.195033148974, "start_elevation_m": 1104.7437520141625, "end_elevation_m": 1607.9836074609348, "endpoint_gain_m": 503.23985544677225, "overall_gradient_pct": 8.803755864319141, "accumulated_ascent_m": 503.63821503517556, "window_maxima": { "max_5m": { "gradient_pct": 18.895170064406557, "start_distance_m": 1446.0, "end_distance_m": 1451.0, "midpoint_distance_m": 1448.5, "start_elevation_m": 1220.950241519719, "end_elevation_m": 1221.8950000229393, "start_xy": [ 972079.2622704152, 6551173.326745326 ], "end_xy": [ 972078.5969693833, 6551168.371205543 ] }, "max_10m": { "gradient_pct": 17.572098832804386, "start_distance_m": 1444.0, "end_distance_m": 1454.0, "midpoint_distance_m": 1449.0, "start_elevation_m": 1220.6132667952527, "end_elevation_m": 1222.3704766785331, "start_xy": [ 972079.5283908279, 6551175.308961239 ], "end_xy": [ 972077.9922779888, 6551165.439309751 ] }, "max_20m": { "gradient_pct": 16.690535485607825, "start_distance_m": 1442.0, "end_distance_m": 1462.0, "midpoint_distance_m": 1452.0, "start_elevation_m": 1220.3226301247694, "end_elevation_m": 1223.660737221891, "start_xy": [ 972079.7945112408, 6551177.291177152 ], "end_xy": [ 972075.901760122, 6551157.717280545 ] }, "max_25m": { "gradient_pct": 16.101890783800627, "start_distance_m": 1440.0, "end_distance_m": 1465.0, "midpoint_distance_m": 1452.5, "start_elevation_m": 1220.0472752348303, "end_elevation_m": 1224.0727479307805, "start_xy": [ 972079.8728100173, 6551179.2777580265 ], "end_xy": [ 972075.117815922, 6551154.821519594 ] }, "max_50m": { "gradient_pct": 13.714468627738825, "start_distance_m": 1420.0, "end_distance_m": 1470.0, "midpoint_distance_m": 1445.0, "start_elevation_m": 1217.7229280598938, "end_elevation_m": 1224.5801623737632, "start_xy": [ 972078.2993351964, 6551199.204676081 ], "end_xy": [ 972073.8112422554, 6551149.99525134 ] }, "max_100m": { "gradient_pct": 12.845313736317848, "start_distance_m": 1368.0, "end_distance_m": 1468.0, "midpoint_distance_m": 1418.0, "start_elevation_m": 1211.5487631844612, "end_elevation_m": 1224.394076920779, "start_xy": [ 972102.3240688292, 6551243.636949847 ], "end_xy": [ 972074.333871722, 6551151.925758641 ] } }, "window_minima": { "min_5m": { "gradient_pct": -3.624185532876254, "start_distance_m": 1273.0, "end_distance_m": 1278.0, "midpoint_distance_m": 1275.5, "start_elevation_m": 1208.4498806331885, "end_elevation_m": 1208.2686713565447, "start_xy": [ 972176.063066132, 6551296.711408101 ], "end_xy": [ 972172.8070412453, 6551292.916898655 ] }, "min_10m": { "gradient_pct": -2.8476573349712453, "start_distance_m": 1272.0, "end_distance_m": 1282.0, "midpoint_distance_m": 1277.0, "start_elevation_m": 1208.4541805371143, "end_elevation_m": 1208.1694148036172, "start_xy": [ 972176.7142711093, 6551297.47030999 ], "end_xy": [ 972170.202221336, 6551289.881291098 ] }, "min_20m": { "gradient_pct": -1.122674471882874, "start_distance_m": 1270.0, "end_distance_m": 1290.0, "midpoint_distance_m": 1280.0, "start_elevation_m": 1208.452729204956, "end_elevation_m": 1208.2281943105795, "start_xy": [ 972178.016681064, 6551298.988113769 ], "end_xy": [ 972164.9925815172, 6551283.810075984 ] }, "min_25m": { "gradient_pct": -0.34871834296063753, "start_distance_m": 1267.0, "end_distance_m": 1292.0, "midpoint_distance_m": 1279.5, "start_elevation_m": 1208.3837820296603, "end_elevation_m": 1208.2966024439202, "start_xy": [ 972180.0223483683, 6551301.216942872 ], "end_xy": [ 972163.5739146086, 6551282.405593035 ] }, "min_50m": { "gradient_pct": 2.587344448595559, "start_distance_m": 1312.0, "end_distance_m": 1362.0, "midpoint_distance_m": 1337.0, "start_elevation_m": 1209.7747456591312, "end_elevation_m": 1211.068417883429, "start_xy": [ 972147.058874513, 6551271.407730704 ], "end_xy": [ 972104.9902211634, 6551249.012043497 ] }, "min_100m": { "gradient_pct": 2.8400855646507353, "start_distance_m": 1258.0, "end_distance_m": 1358.0, "midpoint_distance_m": 1308.0, "start_elevation_m": 1207.9317056775658, "end_elevation_m": 1210.7717912422165, "start_xy": [ 972186.3396838162, 6551307.627190358 ], "end_xy": [ 972107.0761990397, 6551252.422582687 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 20.165476272302385, "start_distance_m": 1445.0, "end_distance_m": 1447.0, "midpoint_distance_m": 1446.0, "start_elevation_m": 1220.7705279255604, "end_elevation_m": 1221.1738374510064, "start_xy": [ 972079.3953306216, 6551174.317853282 ], "end_xy": [ 972079.1292102089, 6551172.335637369 ] }, "max_3m": { "gradient_pct": 18.888840568327698, "start_distance_m": 1446.0, "end_distance_m": 1449.0, "midpoint_distance_m": 1447.5, "start_elevation_m": 1220.950241519719, "end_elevation_m": 1221.5169067367688, "start_xy": [ 972079.2622704152, 6551173.326745326 ], "end_xy": [ 972078.863089796, 6551170.353421456 ] } }, "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": 0.063, "obstruction_max_height_m": 29.1, "flagged_windows_m": [] }, "review": [], "extent": [ "may_start_earlier" ] }, "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_E968-N6549_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E969-N6549_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E969-N6550_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E970-N6550_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E971-N6550_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E971-N6551_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E972-N6550_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E972-N6551_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E972-N6552_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E973-N6551_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E973-N6552_0m5.tif" ], "calculated_at": "2026-09-17T04:22:28+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": [ "E968-N6549", "E969-N6549", "E969-N6550", "E970-N6550", "E971-N6550", "E971-N6551", "E972-N6550", "E972-N6551", "E972-N6552", "E973-N6551", "E973-N6552" ], "elevation_blocks": [ "21LHD5QK2@2025-06-13" ], "ign_dalles": [ "LHD_FXX_0968_6550_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0969_6550_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0969_6551_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0970_6551_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0971_6551_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0971_6552_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0972_6551_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0972_6552_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0972_6553_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0973_6552_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0973_6553_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD5QK2" ], "ign_editions": [ "2025-06-13" ], "ign_dsm_edition": { "LHD_FXX_0968_6550_MNT_O_0M50_LAMB93_IGN69": "2025-06-13", "LHD_FXX_0969_6550_MNT_O_0M50_LAMB93_IGN69": "2025-06-13", "LHD_FXX_0969_6551_MNT_O_0M50_LAMB93_IGN69": "2025-06-13", "LHD_FXX_0970_6551_MNT_O_0M50_LAMB93_IGN69": "2025-06-13", "LHD_FXX_0971_6551_MNT_O_0M50_LAMB93_IGN69": "2025-06-13", "LHD_FXX_0971_6552_MNT_O_0M50_LAMB93_IGN69": "2025-06-13", "LHD_FXX_0972_6551_MNT_O_0M50_LAMB93_IGN69": "2025-06-13", "LHD_FXX_0972_6552_MNT_O_0M50_LAMB93_IGN69": "2025-06-13", "LHD_FXX_0972_6553_MNT_O_0M50_LAMB93_IGN69": "2025-06-13", "LHD_FXX_0973_6552_MNT_O_0M50_LAMB93_IGN69": "2025-06-13", "LHD_FXX_0973_6553_MNT_O_0M50_LAMB93_IGN69": "2025-06-13" }, "climb_origin": "named-pass", "structure_own_ways": 2, "carriageway": { "stations": 234, "stations_resolved": 234, "width_median_m": 6.25, "width_p10_m": 5.25, "width_min_m": 2.5, "width_max_m": 12.0, "bounded_share": 0.453, "unbounded_share": 0.547, "confidence_median": 0.0, "width_median_bounded_m": 6.25, "window_m": [ 1440.0, 1465.0 ], "width_at_max25_m": 7.5, "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": 234, "stations_resolved": 234, "width_median_m": 7.5, "width_p10_m": 2.0, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.889, "unbounded_share": 0.111, "confidence_median": 1.0, "width_median_bounded_m": 7.25, "window_m": [ 1440.0, 1465.0 ], "width_at_max25_m": 9.25, "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": "Le Reposoir", "county": "Haute-Savoie", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }