{
 "ocl_version": "0.1.0",
 "name": "Chemin d'Arreugle",
 "slug": "chemin-d-arreugle",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 50.007931617875556,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 122.0,
   "end_distance_m": 124.0,
   "start_elevation_m": 812.2108879735304,
   "end_elevation_m": 813.2110466058879,
   "min_gradient_pct": -17.82220204481746,
   "suppressed_max_gradient_pct": 108.94065198065164,
   "suppressed_location_m": [
    390.0,
    392.0
   ],
   "suppressed_min_gradient_pct": -46.455684290856425,
   "suppressed_min_location_m": [
    387.0,
    389.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 40.36822555877961,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 198.0,
   "end_distance_m": 201.0,
   "start_elevation_m": 827.401117384098,
   "end_elevation_m": 828.6121641508614,
   "min_gradient_pct": -17.314855376791154,
   "suppressed_max_gradient_pct": 85.74277798576684,
   "suppressed_location_m": [
    390.0,
    393.0
   ],
   "suppressed_min_gradient_pct": -29.255742421207742,
   "suppressed_min_location_m": [
    386.0,
    389.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 34.948247304437245,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 423.0,
   "end_distance_m": 428.0,
   "start_elevation_m": 875.0398297934203,
   "end_elevation_m": 876.7872421586421,
   "min_gradient_pct": -12.90257809804416,
   "suppressed_max_gradient_pct": 59.60155080756067,
   "suppressed_location_m": [
    389.0,
    394.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 28.967781825862176,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 329.0,
   "end_distance_m": 339.0,
   "start_elevation_m": 854.6082220700137,
   "end_elevation_m": 857.5050002525999,
   "min_gradient_pct": -4.31193327490746,
   "suppressed_max_gradient_pct": 42.259934150354184,
   "suppressed_location_m": [
    389.0,
    399.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 26.622304864828266,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 322.0,
   "end_distance_m": 342.0,
   "start_elevation_m": 852.9459482286134,
   "end_elevation_m": 858.270409201579,
   "min_gradient_pct": 5.6945510061297,
   "suppressed_max_gradient_pct": 28.005245800133025,
   "suppressed_location_m": [
    389.0,
    409.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 26.3208033614942,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 316.0,
   "end_distance_m": 341.0,
   "start_elevation_m": 851.4425598330738,
   "end_elevation_m": 858.0227606734474,
   "min_gradient_pct": 7.8361293583870975,
   "suppressed_max_gradient_pct": 28.402407853488967,
   "suppressed_location_m": [
    389.0,
    414.0
   ],
   "suppressed_min_gradient_pct": 6.14921405413952,
   "suppressed_min_location_m": [
    79.0,
    104.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 24.742870587916286,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 312.0,
   "end_distance_m": 362.0,
   "start_elevation_m": 850.4624945230968,
   "end_elevation_m": 862.8339298170549,
   "min_gradient_pct": 14.186394382766366,
   "suppressed_min_gradient_pct": 11.654797444016594,
   "suppressed_min_location_m": [
    79.0,
    129.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 22.86945961972708,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 265.0,
   "end_distance_m": 365.0,
   "start_elevation_m": 840.5614159805677,
   "end_elevation_m": 863.4308756002948,
   "min_gradient_pct": 18.89307014145743,
   "suppressed_min_gradient_pct": 14.50913527874502,
   "suppressed_min_location_m": [
    3.0,
    103.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.296,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 233.0,
  "shape_class": "sustained"
 },
 "length_m": 432.09272860386375,
 "start_elevation_m": 794.6189504091867,
 "end_elevation_m": 877.3314761386366,
 "endpoint_gain_m": 82.71252572944991,
 "overall_gradient_pct": 19.142309104969815,
 "accumulated_ascent_m": 85.84398869566803,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 34.948247304437245,
   "start_distance_m": 423.0,
   "end_distance_m": 428.0,
   "midpoint_distance_m": 425.5,
   "start_elevation_m": 875.0398297934203,
   "end_elevation_m": 876.7872421586421,
   "start_xy": [
    401679.04142772715,
    6219094.358607236
   ],
   "end_xy": [
    401674.07898569223,
    6219094.970300828
   ]
  },
  "max_10m": {
   "gradient_pct": 28.967781825862176,
   "start_distance_m": 329.0,
   "end_distance_m": 339.0,
   "midpoint_distance_m": 334.0,
   "start_elevation_m": 854.6082220700137,
   "end_elevation_m": 857.5050002525999,
   "start_xy": [
    401763.4100946163,
    6219120.592657302
   ],
   "end_xy": [
    401753.673813042,
    6219118.311249599
   ]
  },
  "max_20m": {
   "gradient_pct": 26.622304864828266,
   "start_distance_m": 322.0,
   "end_distance_m": 342.0,
   "midpoint_distance_m": 332.0,
   "start_elevation_m": 852.9459482286134,
   "end_elevation_m": 858.270409201579,
   "start_xy": [
    401770.25822178216,
    6219121.89404266
   ],
   "end_xy": [
    401750.7529285697,
    6219117.626827288
   ]
  },
  "max_25m": {
   "gradient_pct": 26.3208033614942,
   "start_distance_m": 316.0,
   "end_distance_m": 341.0,
   "midpoint_distance_m": 328.5,
   "start_elevation_m": 851.4425598330738,
   "end_elevation_m": 858.0227606734474,
   "start_xy": [
    401776.2579442821,
    6219121.836337167
   ],
   "end_xy": [
    401751.72655672714,
    6219117.854968059
   ]
  },
  "max_50m": {
   "gradient_pct": 24.742870587916286,
   "start_distance_m": 312.0,
   "end_distance_m": 362.0,
   "midpoint_distance_m": 337.0,
   "start_elevation_m": 850.4624945230968,
   "end_elevation_m": 862.8339298170549,
   "start_xy": [
    401780.257759282,
    6219121.797866839
   ],
   "end_xy": [
    401731.28036542115,
    6219113.064011883
   ]
  },
  "max_100m": {
   "gradient_pct": 22.86945961972708,
   "start_distance_m": 265.0,
   "end_distance_m": 365.0,
   "midpoint_distance_m": 315.0,
   "start_elevation_m": 840.5614159805677,
   "end_elevation_m": 863.4308756002948,
   "start_xy": [
    401826.7941296206,
    6219127.279976293
   ],
   "end_xy": [
    401728.3594809488,
    6219112.379589572
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -12.90257809804416,
   "start_distance_m": 97.0,
   "end_distance_m": 102.0,
   "midpoint_distance_m": 99.5,
   "start_elevation_m": 810.0894645584317,
   "end_elevation_m": 809.4443356535295,
   "start_xy": [
    401988.7208150282,
    6219102.8964225715
   ],
   "end_xy": [
    401984.3380041573,
    6219105.302865771
   ]
  },
  "min_10m": {
   "gradient_pct": -4.31193327490746,
   "start_distance_m": 93.0,
   "end_distance_m": 103.0,
   "midpoint_distance_m": 98.0,
   "start_elevation_m": 809.7315660033314,
   "end_elevation_m": 809.3003726758407,
   "start_xy": [
    401992.22706372483,
    6219100.971268012
   ],
   "end_xy": [
    401983.4614419832,
    6219105.7841544105
   ]
  },
  "min_20m": {
   "gradient_pct": 5.6945510061297,
   "start_distance_m": 89.0,
   "end_distance_m": 109.0,
   "midpoint_distance_m": 99.0,
   "start_elevation_m": 809.0456758407504,
   "end_elevation_m": 810.1845860419763,
   "start_xy": [
    401995.73331242154,
    6219099.046113453
   ],
   "end_xy": [
    401977.942653467,
    6219107.981057218
   ]
  },
  "min_25m": {
   "gradient_pct": 7.8361293583870975,
   "start_distance_m": 81.0,
   "end_distance_m": 106.0,
   "midpoint_distance_m": 93.5,
   "start_elevation_m": 807.9558558152787,
   "end_elevation_m": 809.9148881548755,
   "start_xy": [
    402001.8411443356,
    6219093.946042227
   ],
   "end_xy": [
    401980.83175546065,
    6219107.22802033
   ]
  },
  "min_50m": {
   "gradient_pct": 14.186394382766366,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 794.6189504091867,
   "end_elevation_m": 801.7121476005699,
   "start_xy": [
    402078.231,
    6219104.124
   ],
   "end_xy": [
    402029.8503854032,
    6219091.502203598
   ]
  },
  "min_100m": {
   "gradient_pct": 18.89307014145743,
   "start_distance_m": 156.0,
   "end_distance_m": 256.0,
   "midpoint_distance_m": 206.0,
   "start_elevation_m": 820.3056064583129,
   "end_elevation_m": 839.1986765997704,
   "start_xy": [
    401931.4036028774,
    6219113.014354539
   ],
   "end_xy": [
    401835.7535515496,
    6219128.1336499415
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 50.007931617875556,
   "start_distance_m": 122.0,
   "end_distance_m": 124.0,
   "midpoint_distance_m": 123.0,
   "start_elevation_m": 812.2108879735304,
   "end_elevation_m": 813.2110466058879,
   "start_xy": [
    401965.16778392036,
    6219110.11654738
   ],
   "end_xy": [
    401963.1681977191,
    6219110.157229364
   ]
  },
  "max_3m": {
   "gradient_pct": 40.36822555877961,
   "start_distance_m": 198.0,
   "end_distance_m": 201.0,
   "midpoint_distance_m": 199.5,
   "start_elevation_m": 827.401117384098,
   "end_elevation_m": 828.6121641508614,
   "start_xy": [
    401890.15294086206,
    6219112.3576903185
   ],
   "end_xy": [
    401887.3971967948,
    6219113.543386162
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.072,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    25.0,
    50.0,
    100.0
   ],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.399,
   "obstruction_max_height_m": 24.34,
   "flagged_windows_m": [
    2,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    75.0,
    80.0
   ],
   [
    127.0,
    138.0
   ],
   [
    150.0,
    155.0
   ],
   [
    388.0,
    394.0
   ]
  ],
  "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_E401-N6219_0m5@21LHD1FR-2025-03-21.tif",
   "data/cache/fr/ign-lidarhd_dtm_E402-N6219_0m5@21LHD1FR-2025-03-21.tif"
  ],
  "calculated_at": "2026-09-20T06:02:57+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": [
   "E401-N6219",
   "E402-N6219"
  ],
  "elevation_blocks": [
   "21LHD1FR@2025-03-21"
  ],
  "ign_dalles": [
   "LHD_FXX_0401_6220_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0402_6220_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD1FR"
  ],
  "ign_editions": [
   "2025-03-21"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0401_6220_MNT_O_0M50_LAMB93_IGN69": "2025-03-21",
   "LHD_FXX_0402_6220_MNT_O_0M50_LAMB93_IGN69": "2025-03-21"
  },
  "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": 3.5,
   "width_p10_m": 2.0,
   "width_min_m": 0.5,
   "width_max_m": 11.5,
   "bounded_share": 0.417,
   "unbounded_share": 0.583,
   "confidence_median": 0.0,
   "width_median_bounded_m": 2.38,
   "window_m": [
    316.0,
    341.0
   ],
   "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": 24,
    "stations_resolved": 24,
    "width_median_m": 2.75,
    "width_p10_m": 0.65,
    "width_min_m": 0.0,
    "width_max_m": 12.0,
    "bounded_share": 0.833,
    "unbounded_share": 0.167,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.12,
    "window_m": [
     316.0,
     341.0
    ],
    "width_at_max25_m": 3.5,
    "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": "Osse-en-Aspe",
  "county": "Pyr\u00e9n\u00e9es-Atlantiques",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}