{ "ocl_version": "0.1.0", "name": "Chemin de d'Elizamendi", "slug": "chemin-de-d-elizamendi", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 25.897522976934084, "diagnostic": true, "flags": [], "start_distance_m": 173.0, "end_distance_m": 175.0, "start_elevation_m": 48.90507322028215, "end_elevation_m": 49.42302367982083, "min_gradient_pct": -3.9502039400655775 }, { "window_m": 3.0, "max_gradient_pct": 24.181575672394235, "diagnostic": true, "flags": [], "start_distance_m": 172.0, "end_distance_m": 175.0, "start_elevation_m": 48.697576409649, "end_elevation_m": 49.42302367982083, "min_gradient_pct": -3.0971148015657 }, { "window_m": 5.0, "max_gradient_pct": 23.980095469284777, "diagnostic": false, "flags": [], "start_distance_m": 181.0, "end_distance_m": 186.0, "start_elevation_m": 50.795457492184156, "end_elevation_m": 51.994462265648394, "min_gradient_pct": -1.7246258907438516 }, { "window_m": 10.0, "max_gradient_pct": 23.668036040783562, "diagnostic": false, "flags": [], "start_distance_m": 173.0, "end_distance_m": 183.0, "start_elevation_m": 48.90507322028215, "end_elevation_m": 51.271876824360504, "min_gradient_pct": -0.8464418222300907 }, { "window_m": 20.0, "max_gradient_pct": 22.720543246108917, "diagnostic": false, "flags": [], "start_distance_m": 172.0, "end_distance_m": 192.0, "start_elevation_m": 48.697576409649, "end_elevation_m": 53.241685058870786, "min_gradient_pct": 0.4667540237499068 }, { "window_m": 25.0, "max_gradient_pct": 22.03754061222719, "diagnostic": false, "flags": [], "start_distance_m": 332.0, "end_distance_m": 357.0, "start_elevation_m": 68.23173771804427, "end_elevation_m": 73.74112287110107, "min_gradient_pct": 1.0711997561407145 }, { "window_m": 50.0, "max_gradient_pct": 21.745971038766356, "diagnostic": false, "flags": [], "start_distance_m": 323.0, "end_distance_m": 373.0, "start_elevation_m": 66.2853797972149, "end_elevation_m": 77.15836531659808, "min_gradient_pct": 2.3254094593331303 }, { "window_m": 100.0, "max_gradient_pct": 19.70807580836835, "diagnostic": false, "flags": [], "start_distance_m": 288.0, "end_distance_m": 388.0, "start_elevation_m": 59.73523368223334, "end_elevation_m": 79.44330949060169, "min_gradient_pct": 5.5607717900697935 } ], "shape": { "ascent_concentration": 0.404, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 156.0, "shape_class": "sustained" }, "length_m": 432.55606892561224, "start_elevation_m": 33.88311254467858, "end_elevation_m": 84.93913211867937, "endpoint_gain_m": 51.056019574000786, "overall_gradient_pct": 11.80332984364647, "accumulated_ascent_m": 51.21608477673863, "window_maxima": { "max_5m": { "gradient_pct": 23.980095469284777, "start_distance_m": 181.0, "end_distance_m": 186.0, "midpoint_distance_m": 183.5, "start_elevation_m": 50.795457492184156, "end_elevation_m": 51.994462265648394, "start_xy": [ 331029.88889429386, 6258875.139476479 ], "end_xy": [ 331025.57842323655, 6258872.605736306 ] }, "max_10m": { "gradient_pct": 23.668036040783562, "start_distance_m": 173.0, "end_distance_m": 183.0, "midpoint_distance_m": 178.0, "start_elevation_m": 48.90507322028215, "end_elevation_m": 51.271876824360504, "start_xy": [ 331036.7856479856, 6258879.193460756 ], "end_xy": [ 331028.1647058709, 6258874.12598041 ] }, "max_20m": { "gradient_pct": 22.720543246108917, "start_distance_m": 172.0, "end_distance_m": 192.0, "midpoint_distance_m": 182.0, "start_elevation_m": 48.697576409649, "end_elevation_m": 53.241685058870786, "start_xy": [ 331037.64774219703, 6258879.700208791 ], "end_xy": [ 331020.40585796774, 6258869.565248098 ] }, "max_25m": { "gradient_pct": 22.03754061222719, "start_distance_m": 332.0, "end_distance_m": 357.0, "midpoint_distance_m": 344.5, "start_elevation_m": 68.23173771804427, "end_elevation_m": 73.74112287110107, "start_xy": [ 330951.3990752437, 6258932.571081683 ], "end_xy": [ 330946.6923547214, 6258908.117824894 ] }, "max_50m": { "gradient_pct": 21.745971038766356, "start_distance_m": 323.0, "end_distance_m": 373.0, "midpoint_distance_m": 348.0, "start_elevation_m": 66.2853797972149, "end_elevation_m": 77.15836531659808, "start_xy": [ 330955.40736606286, 6258940.6292207185 ], "end_xy": [ 330946.14815442933, 6258892.127082383 ] }, "max_100m": { "gradient_pct": 19.70807580836835, "start_distance_m": 288.0, "end_distance_m": 388.0, "midpoint_distance_m": 338.0, "start_elevation_m": 59.73523368223334, "end_elevation_m": 79.44330949060169, "start_xy": [ 330979.27606893866, 6258951.112525179 ], "end_xy": [ 330947.5524544881, 6258877.224160743 ] } }, "window_minima": { "min_5m": { "gradient_pct": -1.7246258907438516, "start_distance_m": 39.0, "end_distance_m": 44.0, "midpoint_distance_m": 41.5, "start_elevation_m": 35.02131806869532, "end_elevation_m": 34.93508677415813, "start_xy": [ 331154.22971034196, 6258941.362819337 ], "end_xy": [ 331149.2868859171, 6258940.769236007 ] }, "min_10m": { "gradient_pct": -0.8464418222300907, "start_distance_m": 34.0, "end_distance_m": 44.0, "midpoint_distance_m": 39.0, "start_elevation_m": 35.01973095638114, "end_elevation_m": 34.93508677415813, "start_xy": [ 331159.2225679904, 6258941.095663012 ], "end_xy": [ 331149.2868859171, 6258940.769236007 ] }, "min_20m": { "gradient_pct": 0.4667540237499068, "start_distance_m": 31.0, "end_distance_m": 51.0, "midpoint_distance_m": 41.0, "start_elevation_m": 34.97900343158999, "end_elevation_m": 35.07235423633997, "start_xy": [ 331162.2182825795, 6258940.935369217 ], "end_xy": [ 331142.3594295895, 6258939.802336782 ] }, "min_25m": { "gradient_pct": 1.0711997561407145, "start_distance_m": 26.0, "end_distance_m": 51.0, "midpoint_distance_m": 38.5, "start_elevation_m": 34.80455429730479, "end_elevation_m": 35.07235423633997, "start_xy": [ 331167.21114022797, 6258940.668212892 ], "end_xy": [ 331142.3594295895, 6258939.802336782 ] }, "min_50m": { "gradient_pct": 2.3254094593331303, "start_distance_m": 0.0, "end_distance_m": 50.0, "midpoint_distance_m": 25.0, "start_elevation_m": 33.88311254467858, "end_elevation_m": 35.04581727434515, "start_xy": [ 331193.174, 6258939.279 ], "end_xy": [ 331143.35548983695, 6258939.8910157485 ] }, "min_100m": { "gradient_pct": 5.5607717900697935, "start_distance_m": 0.0, "end_distance_m": 100.0, "midpoint_distance_m": 50.0, "start_elevation_m": 33.88311254467858, "end_elevation_m": 39.443884334748375, "start_xy": [ 331193.174, 6258939.279 ], "end_xy": [ 331099.7229818143, 6258916.17847985 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 25.897522976934084, "start_distance_m": 173.0, "end_distance_m": 175.0, "midpoint_distance_m": 174.0, "start_elevation_m": 48.90507322028215, "end_elevation_m": 49.42302367982083, "start_xy": [ 331036.7856479856, 6258879.193460756 ], "end_xy": [ 331035.0614595626, 6258878.179964687 ] }, "max_3m": { "gradient_pct": 24.181575672394235, "start_distance_m": 172.0, "end_distance_m": 175.0, "midpoint_distance_m": 173.5, "start_elevation_m": 48.697576409649, "end_elevation_m": 49.42302367982083, "start_xy": [ 331037.64774219703, 6258879.700208791 ], "end_xy": [ 331035.0614595626, 6258878.179964687 ] } }, "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": 0.037, "obstruction_max_height_m": 7.82, "flagged_windows_m": [] }, "review": [], "extent": [ "may_continue_beyond_end" ] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "06fa4c370391597f015858e97dcf01ca2f5b3640", "code_git_dirty": "false", "analysis_version": "0.1.0", "analysis_config_digest": "sha256:0048c2bbb24ab95e", "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-pyr1", "road_pbf": "block-batch-fr-pyr1.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:c54ac68b3f57b41b" }, "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_E330-N6258_0m5@21LHD1EQ-2025-09-26.tif", "data/cache/fr/ign-lidarhd_dtm_E331-N6258_0m5@21LHD1EQ-2025-09-26.tif" ], "calculated_at": "2026-09-20T06:14:35+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-pyr1.osm.pbf", "osm_snapshot": "", "run_id": "fr-pyr1", "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": [ "E330-N6258", "E331-N6258" ], "elevation_blocks": [ "21LHD1EQ@2025-09-26" ], "ign_dalles": [ "LHD_FXX_0330_6259_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0331_6259_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD1EQ" ], "ign_editions": [ "2025-09-26" ], "ign_dsm_edition": { "LHD_FXX_0330_6259_MNT_O_0M50_LAMB93_IGN69": "2025-09-26", "LHD_FXX_0331_6259_MNT_O_0M50_LAMB93_IGN69": "2025-09-26" }, "climb_origin": "discovered", "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked", "carriageway": { "stations": 24, "stations_resolved": 24, "width_median_m": 6.88, "width_p10_m": 3.9, "width_min_m": 3.25, "width_max_m": 12.0, "bounded_share": 0.292, "unbounded_share": 0.708, "confidence_median": 0.0, "width_median_bounded_m": 5.25, "window_m": [ 332.0, 357.0 ], "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": 24, "stations_resolved": 24, "width_median_m": 9.38, "width_p10_m": 5.2, "width_min_m": 1.0, "width_max_m": 12.0, "bounded_share": 0.333, "unbounded_share": 0.667, "confidence_median": 0.0, "width_median_bounded_m": 6.25, "window_m": [ 332.0, 357.0 ], "width_at_max25_m": 10.0, "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-P\u00e9e-sur-Nivelle", "county": "Pyr\u00e9n\u00e9es-Atlantiques", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }