{
 "ocl_version": "0.1.0",
 "name": "Chjassu di U Stellu",
 "slug": "chjassu-di-u-stellu",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 44.22988733086015,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 284.0,
   "end_distance_m": 286.0,
   "start_elevation_m": 345.54043457602666,
   "end_elevation_m": 346.42503232264386,
   "min_gradient_pct": 4.501386863884704,
   "suppressed_max_gradient_pct": 72.23042335253922,
   "suppressed_location_m": [
    39.0,
    41.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 39.66448263942274,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 284.0,
   "end_distance_m": 287.0,
   "start_elevation_m": 345.54043457602666,
   "end_elevation_m": 346.73036905520934,
   "min_gradient_pct": 8.650685613647132,
   "suppressed_max_gradient_pct": 61.412532968874224,
   "suppressed_location_m": [
    38.0,
    41.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 36.35157664827261,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 80.0,
   "end_distance_m": 85.0,
   "start_elevation_m": 306.057364955194,
   "end_elevation_m": 307.8749437876076,
   "min_gradient_pct": 9.682994686127131,
   "suppressed_max_gradient_pct": 49.35425217032389,
   "suppressed_location_m": [
    36.0,
    41.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 35.39332220872552,
   "diagnostic": false,
   "flags": [
    "suppression_unstable",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 74.0,
   "end_distance_m": 84.0,
   "start_elevation_m": 303.98085692947865,
   "end_elevation_m": 307.5201891503512,
   "min_gradient_pct": 11.85088078742126,
   "suppressed_max_gradient_pct": 40.952765768128074,
   "suppressed_location_m": [
    285.0,
    295.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 34.101952697610045,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 71.0,
   "end_distance_m": 91.0,
   "start_elevation_m": 302.98788552619374,
   "end_elevation_m": 309.80827606571575,
   "min_gradient_pct": 12.802363339583565,
   "suppressed_max_gradient_pct": 35.444892058869186,
   "suppressed_location_m": [
    30.0,
    50.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 33.306392887092215,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 65.0,
   "end_distance_m": 90.0,
   "start_elevation_m": 301.1636586224706,
   "end_elevation_m": 309.4902568442437,
   "min_gradient_pct": 13.0784117170449
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 30.305078437066868,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 54.0,
   "end_distance_m": 104.0,
   "start_elevation_m": 298.026971468579,
   "end_elevation_m": 313.17951068711244,
   "min_gradient_pct": 13.64218275667622,
   "suppressed_max_gradient_pct": 32.55027300888287,
   "suppressed_location_m": [
    37.0,
    87.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 24.81131760724833,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 52.0,
   "end_distance_m": 152.0,
   "start_elevation_m": 297.5156839885652,
   "end_elevation_m": 322.3270015958135,
   "min_gradient_pct": 15.960989124452965,
   "suppressed_max_gradient_pct": 28.941076874452673,
   "suppressed_location_m": [
    11.0,
    111.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.352,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 299.0,
  "shape_class": "sustained"
 },
 "length_m": 299.81098682713053,
 "start_elevation_m": 284.18395059945135,
 "end_elevation_m": 350.8128561707593,
 "endpoint_gain_m": 66.62890557130794,
 "overall_gradient_pct": 22.22363705761251,
 "accumulated_ascent_m": 66.8756122490858,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 36.35157664827261,
   "start_distance_m": 80.0,
   "end_distance_m": 85.0,
   "midpoint_distance_m": 82.5,
   "start_elevation_m": 306.057364955194,
   "end_elevation_m": 307.8749437876076,
   "start_xy": [
    1227990.302674426,
    6208644.495554347
   ],
   "end_xy": [
    1227986.6600992593,
    6208647.920703417
   ]
  },
  "max_10m": {
   "gradient_pct": 35.39332220872552,
   "start_distance_m": 74.0,
   "end_distance_m": 84.0,
   "midpoint_distance_m": 79.0,
   "start_elevation_m": 303.98085692947865,
   "end_elevation_m": 307.5201891503512,
   "start_xy": [
    1227994.04524712,
    6208639.8745289575
   ],
   "end_xy": [
    1227987.3886142927,
    6208647.235673603
   ]
  },
  "max_20m": {
   "gradient_pct": 34.101952697610045,
   "start_distance_m": 71.0,
   "end_distance_m": 91.0,
   "midpoint_distance_m": 81.0,
   "start_elevation_m": 302.98788552619374,
   "end_elevation_m": 309.80827606571575,
   "start_xy": [
    1227995.610286617,
    6208637.315104926
   ],
   "end_xy": [
    1227982.2890090595,
    6208652.030882302
   ]
  },
  "max_25m": {
   "gradient_pct": 33.306392887092215,
   "start_distance_m": 65.0,
   "end_distance_m": 90.0,
   "midpoint_distance_m": 77.5,
   "start_elevation_m": 301.1636586224706,
   "end_elevation_m": 309.4902568442437,
   "start_xy": [
    1227998.7403656102,
    6208632.196256863
   ],
   "end_xy": [
    1227983.0175240927,
    6208651.345852488
   ]
  },
  "max_50m": {
   "gradient_pct": 30.305078437066868,
   "start_distance_m": 54.0,
   "end_distance_m": 104.0,
   "midpoint_distance_m": 79.0,
   "start_elevation_m": 298.026971468579,
   "end_elevation_m": 313.17951068711244,
   "start_xy": [
    1228004.4788437646,
    6208622.81170208
   ],
   "end_xy": [
    1227969.673189178,
    6208651.549978967
   ]
  },
  "max_100m": {
   "gradient_pct": 24.81131760724833,
   "start_distance_m": 52.0,
   "end_distance_m": 152.0,
   "midpoint_distance_m": 102.0,
   "start_elevation_m": 297.5156839885652,
   "end_elevation_m": 322.3270015958135,
   "start_xy": [
    1228005.5222034291,
    6208621.105419392
   ],
   "end_xy": [
    1227922.8727973176,
    6208640.886239735
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 9.682994686127131,
   "start_distance_m": 192.0,
   "end_distance_m": 197.0,
   "midpoint_distance_m": 194.5,
   "start_elevation_m": 327.86480713086235,
   "end_elevation_m": 328.3489568651687,
   "start_xy": [
    1227883.1457717752,
    6208637.054093519
   ],
   "end_xy": [
    1227878.208529083,
    6208636.264388132
   ]
  },
  "min_10m": {
   "gradient_pct": 11.85088078742126,
   "start_distance_m": 257.0,
   "end_distance_m": 267.0,
   "midpoint_distance_m": 262.0,
   "start_elevation_m": 340.9395940809318,
   "end_elevation_m": 342.1246821596739,
   "start_xy": [
    1227864.8655279148,
    6208669.544005667
   ],
   "end_xy": [
    1227873.171105643,
    6208674.626049529
   ]
  },
  "min_20m": {
   "gradient_pct": 12.802363339583565,
   "start_distance_m": 179.0,
   "end_distance_m": 199.0,
   "midpoint_distance_m": 189.0,
   "start_elevation_m": 326.0544583371166,
   "end_elevation_m": 328.6149310050333,
   "start_xy": [
    1227896.020678601,
    6208638.739069788
   ],
   "end_xy": [
    1227876.2336320062,
    6208635.948505976
   ]
  },
  "min_25m": {
   "gradient_pct": 13.0784117170449,
   "start_distance_m": 172.0,
   "end_distance_m": 197.0,
   "midpoint_distance_m": 184.5,
   "start_elevation_m": 325.0793539359075,
   "end_elevation_m": 328.3489568651687,
   "start_xy": [
    1227903.0127992888,
    6208639.071106359
   ],
   "end_xy": [
    1227878.208529083,
    6208636.264388132
   ]
  },
  "min_50m": {
   "gradient_pct": 13.64218275667622,
   "start_distance_m": 156.0,
   "end_distance_m": 206.0,
   "midpoint_distance_m": 181.0,
   "start_elevation_m": 322.81613312819775,
   "end_elevation_m": 329.63722450653586,
   "start_xy": [
    1227918.9710490743,
    6208640.005126435
   ],
   "end_xy": [
    1227869.2473871831,
    6208636.0914031025
   ]
  },
  "min_100m": {
   "gradient_pct": 15.960989124452965,
   "start_distance_m": 118.0,
   "end_distance_m": 218.0,
   "midpoint_distance_m": 168.0,
   "start_elevation_m": 316.24696758226514,
   "end_elevation_m": 332.2079567067181,
   "start_xy": [
    1227956.0286566408,
    6208648.41521712
   ],
   "end_xy": [
    1227857.9847080382,
    6208637.998987736
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 44.22988733086015,
   "start_distance_m": 284.0,
   "end_distance_m": 286.0,
   "midpoint_distance_m": 285.0,
   "start_elevation_m": 345.54043457602666,
   "end_elevation_m": 346.42503232264386,
   "start_xy": [
    1227876.8151592119,
    6208689.381091089
   ],
   "end_xy": [
    1227876.079556655,
    6208691.2387367375
   ]
  },
  "max_3m": {
   "gradient_pct": 39.66448263942274,
   "start_distance_m": 284.0,
   "end_distance_m": 287.0,
   "midpoint_distance_m": 285.5,
   "start_elevation_m": 345.54043457602666,
   "end_elevation_m": 346.73036905520934,
   "start_xy": [
    1227876.8151592119,
    6208689.381091089
   ],
   "end_xy": [
    1227875.6357392266,
    6208692.134853967
   ]
  }
 },
 "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": 0.043,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    20.0,
    50.0,
    100.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.077,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 5.0,
     "start_m": 290.0,
     "end_m": 295.0,
     "raw_pct": 42.46,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": [],
   "unstable": [
    {
     "window_m": 10.0,
     "start_m": 285.0,
     "end_m": 295.0,
     "raw_pct": 40.95,
     "reason": "short-step",
     "perturbations": [
      "phase+0.000/mask+0",
      "phase+0.333/mask+1",
      "phase+0.667/mask-1"
     ],
     "perturbation_reasons": [
      "short-step",
      "short-step",
      ""
     ]
    }
   ]
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.362,
   "obstruction_max_height_m": 12.08,
   "flagged_windows_m": [
    10.0,
    20,
    25
   ]
  },
  "excluded_ranges_m": [
   [
    37.0,
    43.0
   ],
   [
    46.0,
    51.0
   ],
   [
    288.0,
    297.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "33abfff569d4360542e616d0d42c1b94d0a711fa",
   "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-co4",
   "road_pbf": "block-batch-fr-co4.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": "sha256:2a717d675f2607cc"
  },
  "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_E1227-N6208_0m5@21LHDCorseVS-2025-04-02.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1228-N6208_0m5@21LHDCorseVS-2025-04-02.tif"
  ],
  "calculated_at": "2026-09-25T00:19:14+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-co4.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-co4",
  "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": [
   "E1227-N6208",
   "E1228-N6208"
  ],
  "elevation_blocks": [
   "21LHDCorseVS@2025-04-02"
  ],
  "ign_dalles": [
   "LHD_FXX_1227_6209_MNT_O_0M50_LAMB93_IGN78",
   "LHD_FXX_1228_6209_MNT_O_0M50_LAMB93_IGN78"
  ],
  "ign_missions": [
   "21LHDCorseVS"
  ],
  "ign_editions": [
   "2025-04-02"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1227_6209_MNT_O_0M50_LAMB93_IGN78": "2025-04-02",
   "LHD_FXX_1228_6209_MNT_O_0M50_LAMB93_IGN78": "2025-04-02"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 2,
  "suppression_unstable": [
   10.0
  ],
  "carriageway": {
   "stations": 17,
   "stations_resolved": 17,
   "width_median_m": 3.25,
   "width_p10_m": 2.0,
   "width_min_m": 1.25,
   "width_max_m": 5.25,
   "bounded_share": 0.647,
   "unbounded_share": 0.353,
   "confidence_median": 0.604,
   "width_median_bounded_m": 3.0,
   "window_m": [
    65.0,
    90.0
   ],
   "width_at_max25_m": 3.12,
   "window_stations": 6,
   "single_track": true,
   "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": 17,
    "stations_resolved": 17,
    "width_median_m": 2.75,
    "width_p10_m": 1.75,
    "width_min_m": 1.0,
    "width_max_m": 12.0,
    "bounded_share": 0.941,
    "unbounded_share": 0.059,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.75,
    "window_m": [
     65.0,
     90.0
    ],
    "width_at_max25_m": 3.0,
    "window_stations": 6,
    "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": "Brando",
  "county": "Haute-Corse",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}