{ "ocl_version": "0.1.0", "name": "Chemin de l'Or\u00e9e des Bois", "slug": "chemin-de-l-oree-des-bois", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 25.9842581263797, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 202.0, "end_distance_m": 204.0, "start_elevation_m": 954.4595125448682, "end_elevation_m": 954.9791977073958, "min_gradient_pct": -42.93136174209735 }, { "window_m": 3.0, "max_gradient_pct": 23.272594095995675, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 201.0, "end_distance_m": 204.0, "start_elevation_m": 954.2810198845159, "end_elevation_m": 954.9791977073958, "min_gradient_pct": -32.43256198674468 }, { "window_m": 5.0, "max_gradient_pct": 23.03053395004781, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 125.0, "end_distance_m": 130.0, "start_elevation_m": 940.9660979504607, "end_elevation_m": 942.1176246479631, "min_gradient_pct": -20.15668713092964 }, { "window_m": 10.0, "max_gradient_pct": 21.792535237418633, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 124.0, "end_distance_m": 134.0, "start_elevation_m": 940.7442207620318, "end_elevation_m": 942.9234742857736, "min_gradient_pct": -13.495960284915327 }, { "window_m": 20.0, "max_gradient_pct": 21.28966696250359, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 124.0, "end_distance_m": 144.0, "start_elevation_m": 940.7442207620318, "end_elevation_m": 945.0021541545325, "min_gradient_pct": -9.130828084361724 }, { "window_m": 25.0, "max_gradient_pct": 21.176149166079995, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 124.0, "end_distance_m": 149.0, "start_elevation_m": 940.7442207620318, "end_elevation_m": 946.0382580535518, "min_gradient_pct": -8.456444414769066 }, { "window_m": 50.0, "max_gradient_pct": 20.088472226984777, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 103.0, "end_distance_m": 153.0, "start_elevation_m": 936.757866376748, "end_elevation_m": 946.8021024902404, "min_gradient_pct": -7.5125398167765525 }, { "window_m": 100.0, "max_gradient_pct": 18.039647202482, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 104.0, "end_distance_m": 204.0, "start_elevation_m": 936.9395505049138, "end_elevation_m": 954.9791977073958, "min_gradient_pct": -6.277187182147486 } ], "shape": { "ascent_concentration": 0.646, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 218.0, "shape_class": "stepped" }, "length_m": 1471.8087096118595, "start_elevation_m": 922.493252939501, "end_elevation_m": 978.9142397060363, "endpoint_gain_m": 56.42098676653529, "overall_gradient_pct": 3.8334456371993104, "accumulated_ascent_m": 72.7531966612986, "window_maxima": { "max_5m": { "gradient_pct": 23.03053395004781, "start_distance_m": 125.0, "end_distance_m": 130.0, "midpoint_distance_m": 127.5, "start_elevation_m": 940.9660979504607, "end_elevation_m": 942.1176246479631, "start_xy": [ 804222.3691237863, 6462947.109435381 ], "end_xy": [ 804227.3604306495, 6462946.814722305 ] }, "max_10m": { "gradient_pct": 21.792535237418633, "start_distance_m": 124.0, "end_distance_m": 134.0, "midpoint_distance_m": 129.0, "start_elevation_m": 940.7442207620318, "end_elevation_m": 942.9234742857736, "start_xy": [ 804221.3708624137, 6462947.168377996 ], "end_xy": [ 804231.3534761401, 6462946.578951844 ] }, "max_20m": { "gradient_pct": 21.28966696250359, "start_distance_m": 124.0, "end_distance_m": 144.0, "midpoint_distance_m": 134.0, "start_elevation_m": 940.7442207620318, "end_elevation_m": 945.0021541545325, "start_xy": [ 804221.3708624137, 6462947.168377996 ], "end_xy": [ 804240.6358763096, 6462943.038131995 ] }, "max_25m": { "gradient_pct": 21.176149166079995, "start_distance_m": 124.0, "end_distance_m": 149.0, "midpoint_distance_m": 136.5, "start_elevation_m": 940.7442207620318, "end_elevation_m": 946.0382580535518, "start_xy": [ 804221.3708624137, 6462947.168377996 ], "end_xy": [ 804245.2276239153, 6462941.059280327 ] }, "max_50m": { "gradient_pct": 20.088472226984777, "start_distance_m": 103.0, "end_distance_m": 153.0, "midpoint_distance_m": 128.0, "start_elevation_m": 936.757866376748, "end_elevation_m": 946.8021024902404, "start_xy": [ 804200.6032301881, 6462949.562337238 ], "end_xy": [ 804248.9010219999, 6462939.476198992 ] }, "max_100m": { "gradient_pct": 18.039647202482, "start_distance_m": 104.0, "end_distance_m": 204.0, "midpoint_distance_m": 154.0, "start_elevation_m": 936.9395505049138, "end_elevation_m": 954.9791977073958, "start_xy": [ 804201.5652084594, 6462949.28921125 ], "end_xy": [ 804288.4961809376, 6462908.340826276 ] } }, "window_minima": { "min_5m": { "gradient_pct": -20.15668713092964, "start_distance_m": 601.0, "end_distance_m": 606.0, "midpoint_distance_m": 603.5, "start_elevation_m": 973.9306937708202, "end_elevation_m": 972.9228594142737, "start_xy": [ 804616.6800843417, 6462763.94229641 ], "end_xy": [ 804621.0767681432, 6462766.323298626 ] }, "min_10m": { "gradient_pct": -13.495960284915327, "start_distance_m": 655.0, "end_distance_m": 665.0, "midpoint_distance_m": 660.0, "start_elevation_m": 972.3859547264298, "end_elevation_m": 971.0363586979382, "start_xy": [ 804664.1642693976, 6462789.657120337 ], "end_xy": [ 804672.9576370006, 6462794.419124767 ] }, "min_20m": { "gradient_pct": -9.130828084361724, "start_distance_m": 655.0, "end_distance_m": 675.0, "midpoint_distance_m": 665.0, "start_elevation_m": 972.3859547264298, "end_elevation_m": 970.5597891095574, "start_xy": [ 804664.1642693976, 6462789.657120337 ], "end_xy": [ 804681.7510046036, 6462799.1811291985 ] }, "min_25m": { "gradient_pct": -8.456444414769066, "start_distance_m": 655.0, "end_distance_m": 680.0, "midpoint_distance_m": 667.5, "start_elevation_m": 972.3859547264298, "end_elevation_m": 970.2718436227375, "start_xy": [ 804664.1642693976, 6462789.657120337 ], "end_xy": [ 804686.147688405, 6462801.562131414 ] }, "min_50m": { "gradient_pct": -7.5125398167765525, "start_distance_m": 838.0, "end_distance_m": 888.0, "midpoint_distance_m": 863.0, "start_elevation_m": 967.5121339652692, "end_elevation_m": 963.7558640568809, "start_xy": [ 804842.0359765266, 6462810.694974949 ], "end_xy": [ 804891.4048818669, 6462817.43906927 ] }, "min_100m": { "gradient_pct": -6.277187182147486, "start_distance_m": 804.0, "end_distance_m": 904.0, "midpoint_distance_m": 854.0, "start_elevation_m": 969.2805819711739, "end_elevation_m": 963.0033947890264, "start_xy": [ 804808.0559320915, 6462811.490039472 ], "end_xy": [ 804906.8485714882, 6462821.607762333 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 25.9842581263797, "start_distance_m": 202.0, "end_distance_m": 204.0, "midpoint_distance_m": 203.0, "start_elevation_m": 954.4595125448682, "end_elevation_m": 954.9791977073958, "start_xy": [ 804286.9399237471, 6462909.597036273 ], "end_xy": [ 804288.4961809376, 6462908.340826276 ] }, "max_3m": { "gradient_pct": 23.272594095995675, "start_distance_m": 201.0, "end_distance_m": 204.0, "midpoint_distance_m": 202.5, "start_elevation_m": 954.2810198845159, "end_elevation_m": 954.9791977073958, "start_xy": [ 804286.1617951519, 6462910.225141272 ], "end_xy": [ 804288.4961809376, 6462908.340826276 ] } }, "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": 0.086, "obstruction_max_height_m": 19.78, "flagged_windows_m": [ 2, 3, 5, 10, 20, 25, 50, 100 ] }, "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-mc7", "road_pbf": "block-batch-fr-mc7.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_E804-N6462_0m5@22LHD5NM-2025-02-27.tif", "data/cache/fr/ign-lidarhd_dtm_E804-N6463_0m5@22LHD5NM-2025-02-27.tif", "data/cache/fr/ign-lidarhd_dtm_E805-N6462_0m5@22LHD5NM-2025-02-27.tif", "data/cache/fr/ign-lidarhd_dtm_E805-N6463_0m5@22LHD5NM-2025-02-27.tif" ], "calculated_at": "2026-09-22T14:41:22+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc7.osm.pbf", "osm_snapshot": "", "run_id": "fr-mc7", "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": [ "E804-N6462", "E804-N6463", "E805-N6462", "E805-N6463" ], "elevation_blocks": [ "22LHD5NM@2025-02-27" ], "ign_dalles": [ "LHD_FXX_0804_6463_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0804_6464_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0805_6463_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0805_6464_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "22LHD5NM" ], "ign_editions": [ "2025-02-27" ], "ign_dsm_edition": { "LHD_FXX_0804_6463_MNT_O_0M50_LAMB93_IGN69": "2025-02-27", "LHD_FXX_0804_6464_MNT_O_0M50_LAMB93_IGN69": "2025-02-27", "LHD_FXX_0805_6463_MNT_O_0M50_LAMB93_IGN69": "2025-02-27", "LHD_FXX_0805_6464_MNT_O_0M50_LAMB93_IGN69": "2025-02-27" }, "climb_origin": "discovered", "structure_own_ways": 2, "carriageway": { "stations": 65, "stations_resolved": 65, "width_median_m": 7.25, "width_p10_m": 4.75, "width_min_m": 2.5, "width_max_m": 12.0, "bounded_share": 0.046, "unbounded_share": 0.954, "confidence_median": 0.0, "width_median_bounded_m": 7.5, "window_m": [ 124.0, 149.0 ], "width_at_max25_m": 6.75, "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": 65, "stations_resolved": 65, "width_median_m": 9.0, "width_p10_m": 3.45, "width_min_m": 0.75, "width_max_m": 12.0, "bounded_share": 0.431, "unbounded_share": 0.569, "confidence_median": 0.0, "width_median_bounded_m": 5.88, "window_m": [ 124.0, 149.0 ], "width_at_max25_m": 7.0, "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": "Saint-Romain-Lachalm", "county": "Haute-Loire", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }