{ "ocl_version": "0.1.0", "name": "Col de Moissi\u00e8re from Ancelle", "slug": "col-de-moissiere-from-ancelle", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 12.388495554966994, "diagnostic": true, "flags": [], "start_distance_m": 1479.0, "end_distance_m": 1481.0, "start_elevation_m": 1444.2877157295882, "end_elevation_m": 1444.5354856406875, "min_gradient_pct": -6.421500113503953 }, { "window_m": 3.0, "max_gradient_pct": 11.804445238234015, "diagnostic": true, "flags": [], "start_distance_m": 778.0, "end_distance_m": 781.0, "start_elevation_m": 1399.1007237511192, "end_elevation_m": 1399.4548571082662, "min_gradient_pct": -4.274433463236467 }, { "window_m": 5.0, "max_gradient_pct": 11.711340365759497, "diagnostic": false, "flags": [], "start_distance_m": 1768.0, "end_distance_m": 1773.0, "start_elevation_m": 1468.2342383300997, "end_elevation_m": 1468.8198053483877, "min_gradient_pct": -3.437763408610408 }, { "window_m": 10.0, "max_gradient_pct": 11.08803169271141, "diagnostic": false, "flags": [], "start_distance_m": 1644.0, "end_distance_m": 1654.0, "start_elevation_m": 1457.7446150262108, "end_elevation_m": 1458.853418195482, "min_gradient_pct": -2.6911671322500297 }, { "window_m": 20.0, "max_gradient_pct": 10.931531593651016, "diagnostic": false, "flags": [], "start_distance_m": 1635.0, "end_distance_m": 1655.0, "start_elevation_m": 1456.7691636616905, "end_elevation_m": 1458.9554699804207, "min_gradient_pct": -1.6257206817545011 }, { "window_m": 25.0, "max_gradient_pct": 10.759237654599929, "diagnostic": false, "flags": [], "start_distance_m": 1635.0, "end_distance_m": 1660.0, "start_elevation_m": 1456.7691636616905, "end_elevation_m": 1459.4589730753405, "min_gradient_pct": -1.330047756084241 }, { "window_m": 50.0, "max_gradient_pct": 9.349282972237688, "diagnostic": false, "flags": [], "start_distance_m": 1633.0, "end_distance_m": 1683.0, "start_elevation_m": 1456.5900578590401, "end_elevation_m": 1461.264699345159, "min_gradient_pct": -0.783030976952432 }, { "window_m": 100.0, "max_gradient_pct": 8.937384966160607, "diagnostic": false, "flags": [], "start_distance_m": 1635.0, "end_distance_m": 1735.0, "start_elevation_m": 1456.7691636616905, "end_elevation_m": 1465.7065486278511, "min_gradient_pct": 0.0414158285097983 } ], "shape": { "ascent_concentration": 0.307, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 31.0, "shape_class": "sustained" }, "length_m": 3745.3371109767218, "start_elevation_m": 1352.721223078126, "end_elevation_m": 1572.7847201415937, "endpoint_gain_m": 220.0634970634676, "overall_gradient_pct": 5.875665942553264, "accumulated_ascent_m": 221.89694625283278, "window_maxima": { "max_5m": { "gradient_pct": 11.711340365759497, "start_distance_m": 1768.0, "end_distance_m": 1773.0, "midpoint_distance_m": 1770.5, "start_elevation_m": 1468.2342383300997, "end_elevation_m": 1468.8198053483877, "start_xy": [ 955233.5925335642, 6395673.566899877 ], "end_xy": [ 955231.4669485687, 6395669.041207838 ] }, "max_10m": { "gradient_pct": 11.08803169271141, "start_distance_m": 1644.0, "end_distance_m": 1654.0, "midpoint_distance_m": 1649.0, "start_elevation_m": 1457.7446150262108, "end_elevation_m": 1458.853418195482, "start_xy": [ 955263.965427032, 6395786.655029684 ], "end_xy": [ 955263.1163813869, 6395776.723652663 ] }, "max_20m": { "gradient_pct": 10.931531593651016, "start_distance_m": 1635.0, "end_distance_m": 1655.0, "midpoint_distance_m": 1645.0, "start_elevation_m": 1456.7691636616905, "end_elevation_m": 1458.9554699804207, "start_xy": [ 955261.0729739572, 6395794.974103244 ], "end_xy": [ 955262.9689810002, 6395775.734575757 ] }, "max_25m": { "gradient_pct": 10.759237654599929, "start_distance_m": 1635.0, "end_distance_m": 1660.0, "midpoint_distance_m": 1647.5, "start_elevation_m": 1456.7691636616905, "end_elevation_m": 1459.4589730753405, "start_xy": [ 955261.0729739572, 6395794.974103244 ], "end_xy": [ 955262.2319790665, 6395770.789191227 ] }, "max_50m": { "gradient_pct": 9.349282972237688, "start_distance_m": 1633.0, "end_distance_m": 1683.0, "midpoint_distance_m": 1658.0, "start_elevation_m": 1456.5900578590401, "end_elevation_m": 1461.264699345159, "start_xy": [ 955259.8571068863, 6395796.562079083 ], "end_xy": [ 955261.85149779, 6395748.12588625 ] }, "max_100m": { "gradient_pct": 8.937384966160607, "start_distance_m": 1635.0, "end_distance_m": 1735.0, "midpoint_distance_m": 1685.0, "start_elevation_m": 1456.7691636616905, "end_elevation_m": 1465.7065486278511, "start_xy": [ 955261.0729739572, 6395794.974103244 ], "end_xy": [ 955254.714121557, 6395698.707296546 ] } }, "window_minima": { "min_5m": { "gradient_pct": -3.437763408610408, "start_distance_m": 2367.0, "end_distance_m": 2372.0, "midpoint_distance_m": 2369.5, "start_elevation_m": 1491.4397708921324, "end_elevation_m": 1491.2678827217019, "start_xy": [ 955287.7153734645, 6395140.054626986 ], "end_xy": [ 955282.7788478158, 6395139.260451615 ] }, "min_10m": { "gradient_pct": -2.6911671322500297, "start_distance_m": 2364.0, "end_distance_m": 2374.0, "midpoint_distance_m": 2369.0, "start_elevation_m": 1491.4831945035464, "end_elevation_m": 1491.2140777903214, "start_xy": [ 955290.5555173096, 6395140.930144 ], "end_xy": [ 955280.8042375564, 6395138.942781467 ] }, "min_20m": { "gradient_pct": -1.6257206817545011, "start_distance_m": 2358.0, "end_distance_m": 2378.0, "midpoint_distance_m": 2368.0, "start_elevation_m": 1491.5078303294663, "end_elevation_m": 1491.1826861931154, "start_xy": [ 955296.0020375991, 6395143.447169375 ], "end_xy": [ 955276.8550170374, 6395138.30744117 ] }, "min_25m": { "gradient_pct": -1.330047756084241, "start_distance_m": 2354.0, "end_distance_m": 2379.0, "midpoint_distance_m": 2366.5, "start_elevation_m": 1491.5049747835624, "end_elevation_m": 1491.1724628445413, "start_xy": [ 955299.6330511254, 6395145.125186291 ], "end_xy": [ 955275.8677119077, 6395138.148606095 ] }, "min_50m": { "gradient_pct": -0.783030976952432, "start_distance_m": 2361.0, "end_distance_m": 2411.0, "midpoint_distance_m": 2386.0, "start_elevation_m": 1491.4936276811868, "end_elevation_m": 1491.1021121927106, "start_xy": [ 955293.2787774543, 6395142.188656687 ], "end_xy": [ 955246.3996254079, 6395149.096406015 ] }, "min_100m": { "gradient_pct": 0.0414158285097983, "start_distance_m": 2311.0, "end_distance_m": 2411.0, "midpoint_distance_m": 2361.0, "start_elevation_m": 1491.0606963642008, "end_elevation_m": 1491.1021121927106, "start_xy": [ 955324.4551392889, 6395178.649171019 ], "end_xy": [ 955246.3996254079, 6395149.096406015 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 12.388495554966994, "start_distance_m": 1479.0, "end_distance_m": 1481.0, "midpoint_distance_m": 1480.0, "start_elevation_m": 1444.2877157295882, "end_elevation_m": 1444.5354856406875, "start_xy": [ 955195.296102056, 6395925.892402533 ], "end_xy": [ 955196.8759182129, 6395924.665952 ] }, "max_3m": { "gradient_pct": 11.804445238234015, "start_distance_m": 778.0, "end_distance_m": 781.0, "midpoint_distance_m": 779.5, "start_elevation_m": 1399.1007237511192, "end_elevation_m": 1399.4548571082662, "start_xy": [ 955083.0561961272, 6395950.919945935 ], "end_xy": [ 955084.5241619769, 6395948.30363627 ] } }, "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": 0.011, "obstruction_max_height_m": 12.24, "flagged_windows_m": [] }, "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_E954-N6394_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E954-N6395_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E954-N6396_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E955-N6394_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E955-N6395_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E955-N6396_0m5.tif" ], "calculated_at": "2026-09-17T05:21:59+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": [ "E954-N6394", "E954-N6395", "E954-N6396", "E955-N6394", "E955-N6395", "E955-N6396" ], "elevation_blocks": [ "21LHD8QN@2025-02-20" ], "ign_dalles": [ "LHD_FXX_0954_6395_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0954_6396_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0954_6397_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0955_6395_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0955_6396_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0955_6397_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD8QN" ], "ign_editions": [ "2025-02-20" ], "ign_dsm_edition": { "LHD_FXX_0954_6395_MNT_O_0M50_LAMB93_IGN69": "2025-02-20", "LHD_FXX_0954_6396_MNT_O_0M50_LAMB93_IGN69": "2025-02-20", "LHD_FXX_0954_6397_MNT_O_0M50_LAMB93_IGN69": "2025-02-20", "LHD_FXX_0955_6395_MNT_O_0M50_LAMB93_IGN69": "2025-02-20", "LHD_FXX_0955_6396_MNT_O_0M50_LAMB93_IGN69": "2025-02-20", "LHD_FXX_0955_6397_MNT_O_0M50_LAMB93_IGN69": "2025-02-20" }, "climb_origin": "named-pass", "structure_own_ways": 12, "carriageway": { "stations": 155, "stations_resolved": 155, "width_median_m": 7.75, "width_p10_m": 5.75, "width_min_m": 1.75, "width_max_m": 12.0, "bounded_share": 0.174, "unbounded_share": 0.826, "confidence_median": 0.0, "width_median_bounded_m": 7.5, "window_m": [ 1635.0, 1660.0 ], "width_at_max25_m": 7.62, "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": 155, "stations_resolved": 155, "width_median_m": 9.5, "width_p10_m": 5.85, "width_min_m": 1.0, "width_max_m": 12.0, "bounded_share": 0.523, "unbounded_share": 0.477, "confidence_median": 0.881, "width_median_bounded_m": 8.0, "window_m": [ 1635.0, 1660.0 ], "width_at_max25_m": 8.0, "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": "Ancelle", "county": "Hautes-Alpes", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }