{
 "ocl_version": "0.1.0",
 "name": "Chemin de Pekotxea",
 "slug": "chemin-de-pekotxea",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.464022916386853,
   "diagnostic": true,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2949.0,
   "end_distance_m": 2951.0,
   "start_elevation_m": 250.3766408712974,
   "end_elevation_m": 250.88592132962515,
   "min_gradient_pct": -24.079645619801227,
   "suppressed_max_gradient_pct": 43.03530068392263,
   "suppressed_location_m": [
    2565.0,
    2567.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.883901964361144,
   "diagnostic": true,
   "flags": [
    "no_bench_excluded"
   ],
   "start_distance_m": 2969.0,
   "end_distance_m": 2972.0,
   "start_elevation_m": 255.08281032995873,
   "end_elevation_m": 255.82932738888957,
   "min_gradient_pct": -20.944067777475084,
   "suppressed_max_gradient_pct": 42.518017174042676,
   "suppressed_location_m": [
    2564.0,
    2567.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.772979749668593,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2946.0,
   "end_distance_m": 2951.0,
   "start_elevation_m": 249.64727234214172,
   "end_elevation_m": 250.88592132962515,
   "min_gradient_pct": -19.436847609235315,
   "suppressed_max_gradient_pct": 30.79650650627684,
   "suppressed_location_m": [
    2564.0,
    2569.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.329343101605616,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2941.0,
   "end_distance_m": 2951.0,
   "start_elevation_m": 248.4529870194646,
   "end_elevation_m": 250.88592132962515,
   "min_gradient_pct": -12.055693757584436,
   "suppressed_max_gradient_pct": 24.605670938027515,
   "suppressed_location_m": [
    2564.0,
    2574.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.872483783631395,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2958.0,
   "end_distance_m": 2978.0,
   "start_elevation_m": 252.4642775605785,
   "end_elevation_m": 257.2387743173048,
   "min_gradient_pct": -11.363297435026567
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.84946078559244,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2958.0,
   "end_distance_m": 2983.0,
   "start_elevation_m": 252.4642775605785,
   "end_elevation_m": 258.4266427569766,
   "min_gradient_pct": -11.259487642574868
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.54305578101531,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2934.0,
   "end_distance_m": 2984.0,
   "start_elevation_m": 246.87683849988824,
   "end_elevation_m": 258.6483663903959,
   "min_gradient_pct": -10.392327344048795
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 21.88851151984565,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2925.0,
   "end_distance_m": 3025.0,
   "start_elevation_m": 245.0659197696202,
   "end_elevation_m": 266.95443128946584,
   "min_gradient_pct": -8.024352016860263
  }
 ],
 "shape": {
  "ascent_concentration": 0.475,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 325.0,
  "shape_class": "stepped"
 },
 "length_m": 3085.5617906998764,
 "start_elevation_m": 118.91068936981951,
 "end_elevation_m": 277.94169878907445,
 "endpoint_gain_m": 159.03100941925493,
 "overall_gradient_pct": 5.154037423544289,
 "accumulated_ascent_m": 177.56928461257678,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.772979749668593,
   "start_distance_m": 2946.0,
   "end_distance_m": 2951.0,
   "midpoint_distance_m": 2948.5,
   "start_elevation_m": 249.64727234214172,
   "end_elevation_m": 250.88592132962515,
   "start_xy": [
    361455.015525241,
    6249909.408537666
   ],
   "end_xy": [
    361452.5696325472,
    6249905.047619307
   ]
  },
  "max_10m": {
   "gradient_pct": 24.329343101605616,
   "start_distance_m": 2941.0,
   "end_distance_m": 2951.0,
   "midpoint_distance_m": 2946.0,
   "start_elevation_m": 248.4529870194646,
   "end_elevation_m": 250.88592132962515,
   "start_xy": [
    361457.3957307022,
    6249913.803483928
   ],
   "end_xy": [
    361452.5696325472,
    6249905.047619307
   ]
  },
  "max_20m": {
   "gradient_pct": 23.872483783631395,
   "start_distance_m": 2958.0,
   "end_distance_m": 2978.0,
   "midpoint_distance_m": 2968.0,
   "start_elevation_m": 252.4642775605785,
   "end_elevation_m": 257.2387743173048,
   "start_xy": [
    361449.1446110193,
    6249898.942859963
   ],
   "end_xy": [
    361435.16068011156,
    6249884.760327471
   ]
  },
  "max_25m": {
   "gradient_pct": 23.84946078559244,
   "start_distance_m": 2958.0,
   "end_distance_m": 2983.0,
   "midpoint_distance_m": 2970.5,
   "start_elevation_m": 252.4642775605785,
   "end_elevation_m": 258.4266427569766,
   "start_xy": [
    361449.1446110193,
    6249898.942859963
   ],
   "end_xy": [
    361431.16273927793,
    6249881.776860948
   ]
  },
  "max_50m": {
   "gradient_pct": 23.54305578101531,
   "start_distance_m": 2934.0,
   "end_distance_m": 2984.0,
   "midpoint_distance_m": 2959.0,
   "start_elevation_m": 246.87683849988824,
   "end_elevation_m": 258.6483663903959,
   "start_xy": [
    361460.4075820601,
    6249920.122404041
   ],
   "end_xy": [
    361430.3187440608,
    6249881.240510248
   ]
  },
  "max_100m": {
   "gradient_pct": 21.88851151984565,
   "start_distance_m": 2925.0,
   "end_distance_m": 3025.0,
   "midpoint_distance_m": 2975.0,
   "start_elevation_m": 245.0659197696202,
   "end_elevation_m": 266.95443128946584,
   "start_xy": [
    361464.27996237733,
    6249928.246729901
   ],
   "end_xy": [
    361395.7149401603,
    6249859.250131543
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -19.436847609235315,
   "start_distance_m": 2606.0,
   "end_distance_m": 2611.0,
   "midpoint_distance_m": 2608.5,
   "start_elevation_m": 208.29532656011202,
   "end_elevation_m": 207.32348417965025,
   "start_xy": [
    361607.9859441691,
    6249983.694622151
   ],
   "end_xy": [
    361607.53486273414,
    6249988.674233133
   ]
  },
  "min_10m": {
   "gradient_pct": -12.055693757584436,
   "start_distance_m": 2324.0,
   "end_distance_m": 2334.0,
   "midpoint_distance_m": 2329.0,
   "start_elevation_m": 200.77190095594875,
   "end_elevation_m": 199.5663315801903,
   "start_xy": [
    361640.6159711268,
    6249738.983690769
   ],
   "end_xy": [
    361633.62289048766,
    6249746.130577231
   ]
  },
  "min_20m": {
   "gradient_pct": -11.363297435026567,
   "start_distance_m": 2320.0,
   "end_distance_m": 2340.0,
   "midpoint_distance_m": 2330.0,
   "start_elevation_m": 201.20378214161383,
   "end_elevation_m": 198.93112265460852,
   "start_xy": [
    361643.4433394946,
    6249736.154205284
   ],
   "end_xy": [
    361629.504239098,
    6249750.493685152
   ]
  },
  "min_25m": {
   "gradient_pct": -11.259487642574868,
   "start_distance_m": 2311.0,
   "end_distance_m": 2336.0,
   "midpoint_distance_m": 2323.5,
   "start_elevation_m": 202.16464500024028,
   "end_elevation_m": 199.34977308959657,
   "start_xy": [
    361649.8049183221,
    6249729.787862942
   ],
   "end_xy": [
    361632.2500066911,
    6249747.584946538
   ]
  },
  "min_50m": {
   "gradient_pct": -10.392327344048795,
   "start_distance_m": 2290.0,
   "end_distance_m": 2340.0,
   "midpoint_distance_m": 2315.0,
   "start_elevation_m": 204.1272863266329,
   "end_elevation_m": 198.93112265460852,
   "start_xy": [
    361664.64860225294,
    6249714.933064142
   ],
   "end_xy": [
    361629.504239098,
    6249750.493685152
   ]
  },
  "min_100m": {
   "gradient_pct": -8.024352016860263,
   "start_distance_m": 2259.0,
   "end_distance_m": 2359.0,
   "midpoint_distance_m": 2309.0,
   "start_elevation_m": 205.7969395580199,
   "end_elevation_m": 197.77258754115962,
   "start_xy": [
    361688.79590200394,
    6249695.579449773
   ],
   "end_xy": [
    361617.627594881,
    6249765.154903406
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.464022916386853,
   "start_distance_m": 2949.0,
   "end_distance_m": 2951.0,
   "midpoint_distance_m": 2950.0,
   "start_elevation_m": 250.3766408712974,
   "end_elevation_m": 250.88592132962515,
   "start_xy": [
    361453.5479896247,
    6249906.791986651
   ],
   "end_xy": [
    361452.5696325472,
    6249905.047619307
   ]
  },
  "max_3m": {
   "gradient_pct": 24.883901964361144,
   "start_distance_m": 2969.0,
   "end_distance_m": 2972.0,
   "midpoint_distance_m": 2970.5,
   "start_elevation_m": 255.08281032995873,
   "end_elevation_m": 255.82932738888957,
   "start_xy": [
    361442.02832207404,
    6249890.5771559775
   ],
   "end_xy": [
    361439.73910808656,
    6249888.638213143
   ]
  }
 },
 "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": {
  "no_bench_suppression": {
   "masked_fraction": 0.013,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.166,
   "obstruction_max_height_m": 22.65,
   "flagged_windows_m": [
    2,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    2560.0,
    2600.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier",
   "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_E361-N6249_0m5@21LHD1EQ-2025-09-26.tif",
   "data/cache/fr/ign-lidarhd_dtm_E361-N6250_0m5@21LHD1EQ-2025-09-26.tif",
   "data/cache/fr/ign-lidarhd_dtm_E362-N6249_0m5@21LHD1EQ-2025-09-26.tif",
   "data/cache/fr/ign-lidarhd_dtm_E362-N6250_0m5@21LHD1EQ-2025-09-26.tif"
  ],
  "calculated_at": "2026-09-20T05:53:42+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": [
   "E361-N6249",
   "E361-N6250",
   "E362-N6249",
   "E362-N6250"
  ],
  "elevation_blocks": [
   "21LHD1EQ@2025-09-26"
  ],
  "ign_dalles": [
   "LHD_FXX_0361_6250_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0361_6251_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0362_6250_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0362_6251_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD1EQ"
  ],
  "ign_editions": [
   "2025-09-26"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0361_6250_MNT_O_0M50_LAMB93_IGN69": "2025-09-26",
   "LHD_FXX_0361_6251_MNT_O_0M50_LAMB93_IGN69": "2025-09-26",
   "LHD_FXX_0362_6250_MNT_O_0M50_LAMB93_IGN69": "2025-09-26",
   "LHD_FXX_0362_6251_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": 130,
   "stations_resolved": 130,
   "width_median_m": 4.75,
   "width_p10_m": 3.48,
   "width_min_m": 1.25,
   "width_max_m": 10.0,
   "bounded_share": 0.146,
   "unbounded_share": 0.854,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.0,
   "window_m": [
    2958.0,
    2983.0
   ],
   "width_at_max25_m": 5.5,
   "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": 130,
    "stations_resolved": 130,
    "width_median_m": 6.25,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.762,
    "unbounded_share": 0.238,
    "confidence_median": 1.0,
    "width_median_bounded_m": 5.5,
    "window_m": [
     2958.0,
     2983.0
    ],
    "width_at_max25_m": 4.0,
    "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": "Iholdy",
  "county": "Pyr\u00e9n\u00e9es-Atlantiques",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}