{ "ocl_version": "0.1.0", "name": "Col de Brun from Saint-Jeure-d'Andaure", "slug": "col-de-brun-from-saint-jeure-d-andaure", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 31.242162954640662, "diagnostic": true, "flags": [], "start_distance_m": 1058.0, "end_distance_m": 1060.0, "start_elevation_m": 1094.9768348601347, "end_elevation_m": 1095.6016781192275, "min_gradient_pct": -7.738533111705692 }, { "window_m": 3.0, "max_gradient_pct": 22.185944686255727, "diagnostic": true, "flags": [], "start_distance_m": 1057.0, "end_distance_m": 1060.0, "start_elevation_m": 1094.9360997786398, "end_elevation_m": 1095.6016781192275, "min_gradient_pct": -2.7487965226252222 }, { "window_m": 5.0, "max_gradient_pct": 15.710675538234682, "diagnostic": false, "flags": [], "start_distance_m": 1055.0, "end_distance_m": 1060.0, "start_elevation_m": 1094.8161443423157, "end_elevation_m": 1095.6016781192275, "min_gradient_pct": 0.6889241638282328 }, { "window_m": 10.0, "max_gradient_pct": 11.107781673792942, "diagnostic": false, "flags": [], "start_distance_m": 1050.0, "end_distance_m": 1060.0, "start_elevation_m": 1094.4908999518482, "end_elevation_m": 1095.6016781192275, "min_gradient_pct": 3.3240953740642 }, { "window_m": 20.0, "max_gradient_pct": 9.284438686743215, "diagnostic": false, "flags": [], "start_distance_m": 1040.0, "end_distance_m": 1060.0, "start_elevation_m": 1093.7447903818788, "end_elevation_m": 1095.6016781192275, "min_gradient_pct": 4.574002760789426 }, { "window_m": 25.0, "max_gradient_pct": 9.02003715167666, "diagnostic": false, "flags": [], "start_distance_m": 1035.0, "end_distance_m": 1060.0, "start_elevation_m": 1093.3466688313083, "end_elevation_m": 1095.6016781192275, "min_gradient_pct": 4.822497358405599 }, { "window_m": 50.0, "max_gradient_pct": 7.972423537113173, "diagnostic": false, "flags": [], "start_distance_m": 1027.0, "end_distance_m": 1077.0, "start_elevation_m": 1092.6891717553112, "end_elevation_m": 1096.6753835238678, "min_gradient_pct": 5.325640881300387 }, { "window_m": 100.0, "max_gradient_pct": 7.5521356903966534, "diagnostic": false, "flags": [], "start_distance_m": 78.0, "end_distance_m": 178.0, "start_elevation_m": 1028.7519653643897, "end_elevation_m": 1036.3041010547863, "min_gradient_pct": 5.5068296183656 } ], "shape": { "ascent_concentration": 0.264, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 12.0, "shape_class": "sustained" }, "length_m": 1352.246290423338, "start_elevation_m": 1023.6613640693334, "end_elevation_m": 1113.5179009033245, "endpoint_gain_m": 89.85653683399107, "overall_gradient_pct": 6.644983053039867, "accumulated_ascent_m": 90.08860630075776, "window_maxima": { "max_5m": { "gradient_pct": 15.710675538234682, "start_distance_m": 1055.0, "end_distance_m": 1060.0, "midpoint_distance_m": 1057.5, "start_elevation_m": 1094.8161443423157, "end_elevation_m": 1095.6016781192275, "start_xy": [ 813872.5168500805, 6438696.3024998205 ], "end_xy": [ 813868.8309318692, 6438692.9240376055 ] }, "max_10m": { "gradient_pct": 11.107781673792942, "start_distance_m": 1050.0, "end_distance_m": 1060.0, "midpoint_distance_m": 1055.0, "start_elevation_m": 1094.4908999518482, "end_elevation_m": 1095.6016781192275, "start_xy": [ 813876.2027682918, 6438699.680962035 ], "end_xy": [ 813868.8309318692, 6438692.9240376055 ] }, "max_20m": { "gradient_pct": 9.284438686743215, "start_distance_m": 1040.0, "end_distance_m": 1060.0, "midpoint_distance_m": 1050.0, "start_elevation_m": 1093.7447903818788, "end_elevation_m": 1095.6016781192275, "start_xy": [ 813883.5746047144, 6438706.437886466 ], "end_xy": [ 813868.8309318692, 6438692.9240376055 ] }, "max_25m": { "gradient_pct": 9.02003715167666, "start_distance_m": 1035.0, "end_distance_m": 1060.0, "midpoint_distance_m": 1047.5, "start_elevation_m": 1093.3466688313083, "end_elevation_m": 1095.6016781192275, "start_xy": [ 813885.5749723786, 6438710.853233429 ], "end_xy": [ 813868.8309318692, 6438692.9240376055 ] }, "max_50m": { "gradient_pct": 7.972423537113173, "start_distance_m": 1027.0, "end_distance_m": 1077.0, "midpoint_distance_m": 1052.0, "start_elevation_m": 1092.6891717553112, "end_elevation_m": 1096.6753835238678, "start_xy": [ 813887.7403608816, 6438718.554602958 ], "end_xy": [ 813856.2988099507, 6438681.437266073 ] }, "max_100m": { "gradient_pct": 7.5521356903966534, "start_distance_m": 78.0, "end_distance_m": 178.0, "midpoint_distance_m": 128.0, "start_elevation_m": 1028.7519653643897, "end_elevation_m": 1036.3041010547863, "start_xy": [ 814409.8247571716, 6439449.440592324 ], "end_xy": [ 814345.0228950526, 6439373.866520546 ] } }, "window_minima": { "min_5m": { "gradient_pct": 0.6889241638282328, "start_distance_m": 1064.0, "end_distance_m": 1069.0, "midpoint_distance_m": 1066.5, "start_elevation_m": 1095.7505530056808, "end_elevation_m": 1095.7849992138722, "start_xy": [ 813865.8821973001, 6438690.221267833 ], "end_xy": [ 813862.1962790889, 6438686.8428056175 ] }, "min_10m": { "gradient_pct": 3.3240953740642, "start_distance_m": 1060.0, "end_distance_m": 1070.0, "midpoint_distance_m": 1065.0, "start_elevation_m": 1095.6016781192275, "end_elevation_m": 1095.934087656634, "start_xy": [ 813868.8309318692, 6438692.9240376055 ], "end_xy": [ 813861.4590954466, 6438686.167113175 ] }, "min_20m": { "gradient_pct": 4.574002760789426, "start_distance_m": 1082.0, "end_distance_m": 1102.0, "midpoint_distance_m": 1092.0, "start_elevation_m": 1097.0256329492497, "end_elevation_m": 1097.9404335014076, "start_xy": [ 813852.6128917395, 6438678.058803858 ], "end_xy": [ 813835.4191956494, 6438667.851917406 ] }, "min_25m": { "gradient_pct": 4.822497358405599, "start_distance_m": 1085.0, "end_distance_m": 1110.0, "midpoint_distance_m": 1097.5, "start_elevation_m": 1097.1863040531027, "end_elevation_m": 1098.3919283927041, "start_xy": [ 813850.0579694471, 6438676.495198131 ], "end_xy": [ 813828.5303609212, 6438663.784491181 ] }, "min_50m": { "gradient_pct": 5.325640881300387, "start_distance_m": 1302.0, "end_distance_m": 1352.0, "midpoint_distance_m": 1327.0, "start_elevation_m": 1110.849029007991, "end_elevation_m": 1113.5118494486412, "start_xy": [ 813681.29297895, 6438543.831209079 ], "end_xy": [ 813647.491499613, 6438506.9874851275 ] }, "min_100m": { "gradient_pct": 5.5068296183656, "start_distance_m": 1252.0, "end_distance_m": 1352.0, "midpoint_distance_m": 1302.0, "start_elevation_m": 1108.0050198302756, "end_elevation_m": 1113.5118494486412, "start_xy": [ 813715.0944582868, 6438580.674933031 ], "end_xy": [ 813647.491499613, 6438506.9874851275 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 31.242162954640662, "start_distance_m": 1058.0, "end_distance_m": 1060.0, "midpoint_distance_m": 1059.0, "start_elevation_m": 1094.9768348601347, "end_elevation_m": 1095.6016781192275, "start_xy": [ 813870.3052991537, 6438694.275422491 ], "end_xy": [ 813868.8309318692, 6438692.9240376055 ] }, "max_3m": { "gradient_pct": 22.185944686255727, "start_distance_m": 1057.0, "end_distance_m": 1060.0, "midpoint_distance_m": 1058.5, "start_elevation_m": 1094.9360997786398, "end_elevation_m": 1095.6016781192275, "start_xy": [ 813871.042482796, 6438694.951114934 ], "end_xy": [ 813868.8309318692, 6438692.9240376055 ] } }, "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": 0.013, "obstruction_max_height_m": 14.88, "flagged_windows_m": [] }, "review": [], "extent": [ "may_start_earlier" ] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "076a8e7f889cfb3c2cf6b3de65a6030c7155b1f0", "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-mc-cols", "road_pbf": "block-batch-fr-mc-cols.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:af4eae1f5df9e232" }, "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_E813-N6438_0m5@22LHD5NM-2025-02-27.tif", "data/cache/fr/ign-lidarhd_dtm_E813-N6439_0m5@22LHD5NM-2025-02-27.tif", "data/cache/fr/ign-lidarhd_dtm_E814-N6438_0m5@22LHD5NM-2025-02-27.tif", "data/cache/fr/ign-lidarhd_dtm_E814-N6439_0m5@22LHD5NM-2025-02-27.tif" ], "calculated_at": "2026-09-22T22:27:56+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc-cols.osm.pbf", "osm_snapshot": "", "run_id": "fr-mc-cols", "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": [ "E813-N6438", "E813-N6439", "E814-N6438", "E814-N6439" ], "elevation_blocks": [ "22LHD5NM@2025-02-27" ], "ign_dalles": [ "LHD_FXX_0813_6439_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0813_6440_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0814_6439_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0814_6440_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "22LHD5NM" ], "ign_editions": [ "2025-02-27" ], "ign_dsm_edition": { "LHD_FXX_0813_6439_MNT_O_0M50_LAMB93_IGN69": "2025-02-27", "LHD_FXX_0813_6440_MNT_O_0M50_LAMB93_IGN69": "2025-02-27", "LHD_FXX_0814_6439_MNT_O_0M50_LAMB93_IGN69": "2025-02-27", "LHD_FXX_0814_6440_MNT_O_0M50_LAMB93_IGN69": "2025-02-27" }, "climb_origin": "named-pass", "structure_own_ways": 1, "carriageway": { "stations": 60, "stations_resolved": 60, "width_median_m": 6.38, "width_p10_m": 4.62, "width_min_m": 1.25, "width_max_m": 12.0, "bounded_share": 0.267, "unbounded_share": 0.733, "confidence_median": 0.0, "width_median_bounded_m": 6.0, "window_m": [ 1035.0, 1060.0 ], "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": 60, "stations_resolved": 60, "width_median_m": 8.75, "width_p10_m": 4.97, "width_min_m": 2.0, "width_max_m": 12.0, "bounded_share": 0.683, "unbounded_share": 0.317, "confidence_median": 1.0, "width_median_bounded_m": 8.0, "window_m": [ 1035.0, 1060.0 ], "width_at_max25_m": 11.88, "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": "Saint-Jeure-d'Andaure", "county": "Ard\u00e8che", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }