{ "ocl_version": "0.1.0", "name": "Col de Charpal from La Combe des \u00c2nes", "slug": "col-de-charpal-from-la-combe-des-anes", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 8.159981959056495, "diagnostic": true, "flags": [], "start_distance_m": 976.0, "end_distance_m": 978.0, "start_elevation_m": 1389.5587221285123, "end_elevation_m": 1389.7219217676934, "min_gradient_pct": -8.06257434815052 }, { "window_m": 3.0, "max_gradient_pct": 7.647307439462263, "diagnostic": true, "flags": [], "start_distance_m": 984.0, "end_distance_m": 987.0, "start_elevation_m": 1390.1142418852446, "end_elevation_m": 1390.3436611084285, "min_gradient_pct": -7.945849010404042 }, { "window_m": 5.0, "max_gradient_pct": 7.697062576944518, "diagnostic": false, "flags": [], "start_distance_m": 976.0, "end_distance_m": 981.0, "start_elevation_m": 1389.5587221285123, "end_elevation_m": 1389.9435752573595, "min_gradient_pct": -7.409435117888279 }, { "window_m": 10.0, "max_gradient_pct": 7.001156269463991, "diagnostic": false, "flags": [], "start_distance_m": 425.0, "end_distance_m": 435.0, "start_elevation_m": 1383.9671131294072, "end_elevation_m": 1384.6672287563536, "min_gradient_pct": -7.01228069106719 }, { "window_m": 20.0, "max_gradient_pct": 6.712765229834758, "diagnostic": false, "flags": [], "start_distance_m": 961.0, "end_distance_m": 981.0, "start_elevation_m": 1388.6010222113925, "end_elevation_m": 1389.9435752573595, "min_gradient_pct": -6.538721542907524 }, { "window_m": 25.0, "max_gradient_pct": 6.626347712295683, "diagnostic": false, "flags": [], "start_distance_m": 962.0, "end_distance_m": 987.0, "start_elevation_m": 1388.6870741803546, "end_elevation_m": 1390.3436611084285, "min_gradient_pct": -6.381267199487411 }, { "window_m": 50.0, "max_gradient_pct": 6.488840292088298, "diagnostic": false, "flags": [], "start_distance_m": 1380.0, "end_distance_m": 1430.0, "start_elevation_m": 1409.6090601914443, "end_elevation_m": 1412.8534803374885, "min_gradient_pct": -5.855542761652941 }, { "window_m": 100.0, "max_gradient_pct": 6.274217307710387, "diagnostic": false, "flags": [], "start_distance_m": 1351.0, "end_distance_m": 1451.0, "start_elevation_m": 1407.8280976405356, "end_elevation_m": 1414.102314948246, "min_gradient_pct": -4.9654690935797134 } ], "shape": { "ascent_concentration": 0.442, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 0.0, "shape_class": "sustained" }, "length_m": 1866.566422302193, "start_elevation_m": 1384.4444258535116, "end_elevation_m": 1423.6933602636743, "endpoint_gain_m": 39.24893441016275, "overall_gradient_pct": 2.1027344080128554, "accumulated_ascent_m": 54.635914095356384, "window_maxima": { "max_5m": { "gradient_pct": 7.697062576944518, "start_distance_m": 976.0, "end_distance_m": 981.0, "midpoint_distance_m": 978.5, "start_elevation_m": 1389.5587221285123, "end_elevation_m": 1389.9435752573595, "start_xy": [ 748057.7397460635, 6390294.7487388905 ], "end_xy": [ 748060.0466584984, 6390299.184745543 ] }, "max_10m": { "gradient_pct": 7.001156269463991, "start_distance_m": 425.0, "end_distance_m": 435.0, "midpoint_distance_m": 430.0, "start_elevation_m": 1383.9671131294072, "end_elevation_m": 1384.6672287563536, "start_xy": [ 747617.0529410265, 6390002.592541152 ], "end_xy": [ 747624.1721297913, 6390009.61515828 ] }, "max_20m": { "gradient_pct": 6.712765229834758, "start_distance_m": 961.0, "end_distance_m": 981.0, "midpoint_distance_m": 971.0, "start_elevation_m": 1388.6010222113925, "end_elevation_m": 1389.9435752573595, "start_xy": [ 748050.4752610296, 6390281.646838017 ], "end_xy": [ 748060.0466584984, 6390299.184745543 ] }, "max_25m": { "gradient_pct": 6.626347712295683, "start_distance_m": 962.0, "end_distance_m": 987.0, "midpoint_distance_m": 974.5, "start_elevation_m": 1388.6870741803546, "end_elevation_m": 1390.3436611084285, "start_xy": [ 748051.0405073619, 6390282.471760185 ], "end_xy": [ 748062.8149534203, 6390304.507953525 ] }, "max_50m": { "gradient_pct": 6.488840292088298, "start_distance_m": 1380.0, "end_distance_m": 1430.0, "midpoint_distance_m": 1405.0, "start_elevation_m": 1409.6090601914443, "end_elevation_m": 1412.8534803374885, "start_xy": [ 748198.4535569028, 6390673.076317857 ], "end_xy": [ 748216.1308859088, 6390719.845276806 ] }, "max_100m": { "gradient_pct": 6.274217307710387, "start_distance_m": 1351.0, "end_distance_m": 1451.0, "midpoint_distance_m": 1401.0, "start_elevation_m": 1407.8280976405356, "end_elevation_m": 1414.102314948246, "start_xy": [ 748188.3854445446, 6390645.880121184 ], "end_xy": [ 748227.0609465023, 6390737.686096219 ] } }, "window_minima": { "min_5m": { "gradient_pct": -7.409435117888279, "start_distance_m": 20.0, "end_distance_m": 25.0, "midpoint_distance_m": 22.5, "start_elevation_m": 1383.5650149826229, "end_elevation_m": 1383.1945432267285, "start_xy": [ 747312.7759849521, 6389739.284136886 ], "end_xy": [ 747317.2961257714, 6389741.389842138 ] }, "min_10m": { "gradient_pct": -7.01228069106719, "start_distance_m": 14.0, "end_distance_m": 24.0, "midpoint_distance_m": 19.0, "start_elevation_m": 1383.953704851862, "end_elevation_m": 1383.2524767827554, "start_xy": [ 747307.085339678, 6389737.382412309 ], "end_xy": [ 747316.4107017209, 6389740.925058047 ] }, "min_20m": { "gradient_pct": -6.538721542907524, "start_distance_m": 10.0, "end_distance_m": 30.0, "midpoint_distance_m": 20.0, "start_elevation_m": 1384.176314640686, "end_elevation_m": 1382.8685703321046, "start_xy": [ 747303.2915761619, 6389736.114595925 ], "end_xy": [ 747321.7232460238, 6389743.71376259 ] }, "min_25m": { "gradient_pct": -6.381267199487411, "start_distance_m": 11.0, "end_distance_m": 36.0, "midpoint_distance_m": 23.5, "start_elevation_m": 1384.1220533787048, "end_elevation_m": 1382.526736578833, "start_xy": [ 747304.2400170409, 6389736.431550021 ], "end_xy": [ 747327.0357903267, 6389746.502467133 ] }, "min_50m": { "gradient_pct": -5.855542761652941, "start_distance_m": 8.0, "end_distance_m": 58.0, "midpoint_distance_m": 33.0, "start_elevation_m": 1384.2576251143414, "end_elevation_m": 1381.329853733515, "start_xy": [ 747301.3417843834, 6389736.225469562 ], "end_xy": [ 747346.5151194374, 6389756.727717126 ] }, "min_100m": { "gradient_pct": -4.9654690935797134, "start_distance_m": 558.0, "end_distance_m": 658.0, "midpoint_distance_m": 608.0, "start_elevation_m": 1388.5462958630605, "end_elevation_m": 1383.5808267694808, "start_xy": [ 747727.3184077105, 6390071.7966640005 ], "end_xy": [ 747825.3221555185, 6390091.546176602 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 8.159981959056495, "start_distance_m": 976.0, "end_distance_m": 978.0, "midpoint_distance_m": 977.0, "start_elevation_m": 1389.5587221285123, "end_elevation_m": 1389.7219217676934, "start_xy": [ 748057.7397460635, 6390294.7487388905 ], "end_xy": [ 748058.6625110374, 6390296.523141551 ] }, "max_3m": { "gradient_pct": 7.647307439462263, "start_distance_m": 984.0, "end_distance_m": 987.0, "midpoint_distance_m": 985.5, "start_elevation_m": 1390.1142418852446, "end_elevation_m": 1390.3436611084285, "start_xy": [ 748061.4308059593, 6390301.846349534 ], "end_xy": [ 748062.8149534203, 6390304.507953525 ] } }, "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": 0.0, "obstruction_max_height_m": 0.0, "flagged_windows_m": [] }, "review": [], "extent": [ "descends_at_start" ] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "1cc9fdcd6556a02163cb21acb2293cad3067d2a1", "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-mc5", "road_pbf": "block-batch-fr-mc5.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_E747-N6389_0m5@21LHD4MN-2024-12-13.tif", "data/cache/fr/ign-lidarhd_dtm_E747-N6390_0m5@21LHD4MN-2024-12-13.tif", "data/cache/fr/ign-lidarhd_dtm_E748-N6389_0m5@21LHD4MN-2024-12-13.tif", "data/cache/fr/ign-lidarhd_dtm_E748-N6390_0m5@21LHD4MN-2024-12-13.tif" ], "calculated_at": "2026-09-22T17:08:24+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc5.osm.pbf", "osm_snapshot": "", "run_id": "fr-mc5", "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": [ "E747-N6389", "E747-N6390", "E748-N6389", "E748-N6390" ], "elevation_blocks": [ "21LHD4MN@2024-12-13" ], "ign_dalles": [ "LHD_FXX_0747_6390_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0747_6391_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0748_6390_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0748_6391_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD4MN" ], "ign_editions": [ "2024-12-13" ], "ign_dsm_edition": { "LHD_FXX_0747_6390_MNT_O_0M50_LAMB93_IGN69": "2024-12-13", "LHD_FXX_0747_6391_MNT_O_0M50_LAMB93_IGN69": "2024-12-13", "LHD_FXX_0748_6390_MNT_O_0M50_LAMB93_IGN69": "2024-12-13", "LHD_FXX_0748_6391_MNT_O_0M50_LAMB93_IGN69": "2024-12-13" }, "climb_origin": "named-pass", "structure_own_ways": 1, "carriageway": { "stations": 81, "stations_resolved": 81, "width_median_m": 6.5, "width_p10_m": 5.5, "width_min_m": 5.0, "width_max_m": 11.0, "bounded_share": 0.123, "unbounded_share": 0.877, "confidence_median": 0.0, "width_median_bounded_m": 6.25, "window_m": [ 962.0, 987.0 ], "width_at_max25_m": 6.25, "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": 81, "stations_resolved": 81, "width_median_m": 10.75, "width_p10_m": 8.25, "width_min_m": 5.75, "width_max_m": 12.0, "bounded_share": 0.198, "unbounded_share": 0.802, "confidence_median": 0.0, "width_median_bounded_m": 8.12, "window_m": [ 962.0, 987.0 ], "width_at_max25_m": 10.75, "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": "Pelouse", "county": "Loz\u00e8re", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }