{ "ocl_version": "0.1.0", "name": "Col de Serri\u00e8res from Belleau", "slug": "col-de-serrieres-from-belleau", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 14.62571879925747, "diagnostic": true, "flags": [], "start_distance_m": 1209.0, "end_distance_m": 1211.0, "start_elevation_m": 275.6937885010029, "end_elevation_m": 275.9863028769881, "min_gradient_pct": -13.906890022701646 }, { "window_m": 3.0, "max_gradient_pct": 14.586951334456444, "diagnostic": true, "flags": [], "start_distance_m": 1208.0, "end_distance_m": 1211.0, "start_elevation_m": 275.5486943369544, "end_elevation_m": 275.9863028769881, "min_gradient_pct": -12.927551037275483 }, { "window_m": 5.0, "max_gradient_pct": 13.887402819314048, "diagnostic": false, "flags": [], "start_distance_m": 1180.0, "end_distance_m": 1185.0, "start_elevation_m": 271.994711062447, "end_elevation_m": 272.6890812034127, "min_gradient_pct": -12.770995941093588 }, { "window_m": 10.0, "max_gradient_pct": 13.294535125942275, "diagnostic": false, "flags": [], "start_distance_m": 1179.0, "end_distance_m": 1189.0, "start_elevation_m": 271.86278462199067, "end_elevation_m": 273.1922381345849, "min_gradient_pct": -12.303158868251671 }, { "window_m": 20.0, "max_gradient_pct": 13.014988145647521, "diagnostic": false, "flags": [], "start_distance_m": 1175.0, "end_distance_m": 1195.0, "start_elevation_m": 271.37299028093776, "end_elevation_m": 273.97598791006726, "min_gradient_pct": -12.078518488952739 }, { "window_m": 25.0, "max_gradient_pct": 12.789029045066854, "diagnostic": false, "flags": [], "start_distance_m": 1170.0, "end_distance_m": 1195.0, "start_elevation_m": 270.77873064880055, "end_elevation_m": 273.97598791006726, "min_gradient_pct": -11.832737590625584 }, { "window_m": 50.0, "max_gradient_pct": 12.523649800272096, "diagnostic": false, "flags": [], "start_distance_m": 1164.0, "end_distance_m": 1214.0, "start_elevation_m": 270.06994977234086, "end_elevation_m": 276.3317746724769, "min_gradient_pct": -10.256350948085014 }, { "window_m": 100.0, "max_gradient_pct": 11.543016183755412, "diagnostic": false, "flags": [], "start_distance_m": 1111.0, "end_distance_m": 1211.0, "start_elevation_m": 264.44328669323266, "end_elevation_m": 275.9863028769881, "min_gradient_pct": -7.66946044515737 } ], "shape": { "ascent_concentration": 0.435, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 74.0, "shape_class": "sustained" }, "length_m": 1246.06887132073, "start_elevation_m": 247.4025582318098, "end_elevation_m": 279.4648519252935, "endpoint_gain_m": 32.062293693483696, "overall_gradient_pct": 2.573075568407412, "accumulated_ascent_m": 48.41565970512451, "window_maxima": { "max_5m": { "gradient_pct": 13.887402819314048, "start_distance_m": 1180.0, "end_distance_m": 1185.0, "midpoint_distance_m": 1182.5, "start_elevation_m": 271.994711062447, "end_elevation_m": 272.6890812034127, "start_xy": [ 934359.3097398258, 6864738.526453001 ], "end_xy": [ 934362.6064866264, 6864734.767269508 ] }, "max_10m": { "gradient_pct": 13.294535125942275, "start_distance_m": 1179.0, "end_distance_m": 1189.0, "midpoint_distance_m": 1184.0, "start_elevation_m": 271.86278462199067, "end_elevation_m": 273.1922381345849, "start_xy": [ 934358.6503904657, 6864739.2782897 ], "end_xy": [ 934365.2438840669, 6864731.759922714 ] }, "max_20m": { "gradient_pct": 13.014988145647521, "start_distance_m": 1175.0, "end_distance_m": 1195.0, "midpoint_distance_m": 1185.0, "start_elevation_m": 271.37299028093776, "end_elevation_m": 273.97598791006726, "start_xy": [ 934355.97512625, 6864742.2499271035 ], "end_xy": [ 934369.0047311523, 6864727.089116078 ] }, "max_25m": { "gradient_pct": 12.789029045066854, "start_distance_m": 1170.0, "end_distance_m": 1195.0, "midpoint_distance_m": 1182.5, "start_elevation_m": 270.77873064880055, "end_elevation_m": 273.97598791006726, "start_xy": [ 934352.4155682131, 6864745.761272512 ], "end_xy": [ 934369.0047311523, 6864727.089116078 ] }, "max_50m": { "gradient_pct": 12.523649800272096, "start_distance_m": 1164.0, "end_distance_m": 1214.0, "midpoint_distance_m": 1189.0, "start_elevation_m": 270.06994977234086, "end_elevation_m": 276.3317746724769, "start_xy": [ 934348.1440985688, 6864749.974887004 ], "end_xy": [ 934379.5530043379, 6864711.321080577 ] }, "max_100m": { "gradient_pct": 11.543016183755412, "start_distance_m": 1111.0, "end_distance_m": 1211.0, "midpoint_distance_m": 1161.0, "start_elevation_m": 264.44328669323266, "end_elevation_m": 275.9863028769881, "start_xy": [ 934310.0765012833, 6864786.747690378 ], "end_xy": [ 934378.009630955, 6864713.89362768 ] } }, "window_minima": { "min_5m": { "gradient_pct": -12.770995941093588, "start_distance_m": 918.0, "end_distance_m": 923.0, "midpoint_distance_m": 920.5, "start_elevation_m": 262.7226531073045, "end_elevation_m": 262.0841033102498, "start_xy": [ 934155.8528571815, 6864892.85679626 ], "end_xy": [ 934160.7866957824, 6864893.5328134 ] }, "min_10m": { "gradient_pct": -12.303158868251671, "start_distance_m": 640.0, "end_distance_m": 650.0, "midpoint_distance_m": 645.0, "start_elevation_m": 273.4685664188459, "end_elevation_m": 272.23825053202074, "start_xy": [ 933914.2013227742, 6864937.779124794 ], "end_xy": [ 933923.1240428216, 6864942.135087061 ] }, "min_20m": { "gradient_pct": -12.078518488952739, "start_distance_m": 912.0, "end_distance_m": 932.0, "midpoint_distance_m": 922.0, "start_elevation_m": 263.43499358010183, "end_elevation_m": 261.0192898823113, "start_xy": [ 934149.9384129868, 6864891.84716768 ], "end_xy": [ 934169.735243556, 6864892.571828101 ] }, "min_25m": { "gradient_pct": -11.832737590625584, "start_distance_m": 910.0, "end_distance_m": 935.0, "midpoint_distance_m": 922.5, "start_elevation_m": 263.6543827684321, "end_elevation_m": 260.6961983707757, "start_xy": [ 934147.9676445618, 6864891.506912817 ], "end_xy": [ 934172.6565565512, 6864891.937569197 ] }, "min_50m": { "gradient_pct": -10.256350948085014, "start_distance_m": 893.0, "end_distance_m": 943.0, "midpoint_distance_m": 918.0, "start_elevation_m": 265.05427325385136, "end_elevation_m": 259.92609777980886, "start_xy": [ 934131.2819028643, 6864888.450317008 ], "end_xy": [ 934180.3446706038, 6864889.725578619 ] }, "min_100m": { "gradient_pct": -7.66946044515737, "start_distance_m": 858.0, "end_distance_m": 958.0, "midpoint_distance_m": 908.0, "start_elevation_m": 266.6810697601401, "end_elevation_m": 259.0116093149827, "start_xy": [ 934097.2652994236, 6864895.279567104 ], "end_xy": [ 934193.330371609, 6864882.2382502295 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 14.62571879925747, "start_distance_m": 1209.0, "end_distance_m": 1211.0, "midpoint_distance_m": 1210.0, "start_elevation_m": 275.6937885010029, "end_elevation_m": 275.9863028769881, "start_xy": [ 934376.9807153665, 6864715.608659083 ], "end_xy": [ 934378.009630955, 6864713.89362768 ] }, "max_3m": { "gradient_pct": 14.586951334456444, "start_distance_m": 1208.0, "end_distance_m": 1211.0, "midpoint_distance_m": 1209.5, "start_elevation_m": 275.5486943369544, "end_elevation_m": 275.9863028769881, "start_xy": [ 934376.4662575722, 6864716.466174784 ], "end_xy": [ 934378.009630955, 6864713.89362768 ] } }, "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": 0.022, "obstruction_max_height_m": 12.12, "flagged_windows_m": [] }, "review": [], "extent": [ "may_continue_beyond_end" ] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "16bcc1553fe58b280e0c4a66a3ab0980530490a6", "code_git_dirty": "false", "analysis_version": "0.1.0", "analysis_config_digest": "sha256:8c94015b54267da4", "python": "3.14.4", "numpy": "2.5.3", "rasterio": "1.5.1", "pyproj": "3.8.0", "laspy": "2.7.0", "shapely": "2.1.2", "pyosmium": "4.3.1", "libosmium": "2.23.1", "gdal": "3.12.4", "proj": "9.8.1", "run_id": "fr-ne7", "road_pbf": "block-batch-fr-ne7.osm.pbf", "region_key": "france", "crs": "EPSG:2154", "elevation_provider_key": "ign-lidarhd", "tile_index": "wms-grid", "authority": "bdtopo", "registry_pbf": "france-vosges-2026-09-16.osm.pbf", "tile_index_snapshot": "sha256:18f786cf9fa98070" }, "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_E933-N6864_0m5@23LHD1PE-2025-01-29.tif", "data/cache/fr/ign-lidarhd_dtm_E933-N6865_0m5@23LHD1PE-2025-01-29.tif", "data/cache/fr/ign-lidarhd_dtm_E934-N6864_0m5@23LHD1PE-2025-01-29.tif", "data/cache/fr/ign-lidarhd_dtm_E934-N6865_0m5@23LHD1PE-2025-01-29.tif" ], "calculated_at": "2026-09-26T17:50:00+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-ne7.osm.pbf", "osm_snapshot": "", "run_id": "fr-ne7", "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": [ "E933-N6864", "E933-N6865", "E934-N6864", "E934-N6865" ], "elevation_blocks": [ "23LHD1PE@2025-01-29" ], "ign_dalles": [ "LHD_FXX_0933_6865_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0933_6866_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0934_6865_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0934_6866_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "23LHD1PE" ], "ign_editions": [ "2025-01-29" ], "ign_dsm_edition": { "LHD_FXX_0933_6865_MNT_O_0M50_LAMB93_IGN69": "2025-01-29", "LHD_FXX_0933_6866_MNT_O_0M50_LAMB93_IGN69": "2025-01-29", "LHD_FXX_0934_6865_MNT_O_0M50_LAMB93_IGN69": "2025-01-29", "LHD_FXX_0934_6866_MNT_O_0M50_LAMB93_IGN69": "2025-01-29" }, "climb_origin": "named-pass", "seam_filled_samples": { "count": 0, "distances_m": [] }, "seam_filled_in_maximum": false, "structure_own_ways": 6, "carriageway": { "stations": 55, "stations_resolved": 55, "width_median_m": 6.0, "width_p10_m": 4.35, "width_min_m": 3.25, "width_max_m": 12.0, "bounded_share": 0.164, "unbounded_share": 0.836, "confidence_median": 0.0, "width_median_bounded_m": 6.25, "window_m": [ 1170.0, 1195.0 ], "width_at_max25_m": 6.25, "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": 55, "stations_resolved": 55, "width_median_m": 8.0, "width_p10_m": 4.85, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.545, "unbounded_share": 0.455, "confidence_median": 0.967, "width_median_bounded_m": 7.0, "window_m": [ 1170.0, 1195.0 ], "width_at_max25_m": 6.88, "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": "Belleau", "county": "Meurthe-et-Moselle", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }