{
 "ocl_version": "0.1.0",
 "name": "Chemin de Lar\u00e8s",
 "slug": "chemin-de-lares",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 40.66048719714672,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "no_bench_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 1615.0,
   "end_distance_m": 1617.0,
   "start_elevation_m": 779.101679488022,
   "end_elevation_m": 779.9148892319649,
   "min_gradient_pct": -15.300472870859494,
   "suppressed_max_gradient_pct": 106.40048229773811,
   "suppressed_location_m": [
    1376.0,
    1378.0
   ],
   "suppressed_min_gradient_pct": -51.34110475396483,
   "suppressed_min_location_m": [
    1378.0,
    1380.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 34.10051013387374,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "no_bench_excluded_min"
   ],
   "start_distance_m": 1615.0,
   "end_distance_m": 1618.0,
   "start_elevation_m": 779.101679488022,
   "end_elevation_m": 780.1246947920382,
   "min_gradient_pct": -10.204070991259565,
   "suppressed_max_gradient_pct": 77.82441206830224,
   "suppressed_location_m": [
    1375.0,
    1378.0
   ],
   "suppressed_min_gradient_pct": -50.79267849350041,
   "suppressed_min_location_m": [
    1378.0,
    1381.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 27.347352726023928,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "no_bench_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 1616.0,
   "end_distance_m": 1621.0,
   "start_elevation_m": 779.3237244388376,
   "end_elevation_m": 780.6910920751388,
   "min_gradient_pct": -3.385670125617253,
   "suppressed_max_gradient_pct": 49.6290489813191,
   "suppressed_location_m": [
    1373.0,
    1378.0
   ],
   "suppressed_min_gradient_pct": -25.554335791543963,
   "suppressed_min_location_m": [
    1378.0,
    1383.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.356333954162892,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "no_bench_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 1615.0,
   "end_distance_m": 1625.0,
   "start_elevation_m": 779.101679488022,
   "end_elevation_m": 781.5373128834383,
   "min_gradient_pct": 1.2640337060781803,
   "suppressed_max_gradient_pct": 31.334933958199827,
   "suppressed_location_m": [
    1386.0,
    1396.0
   ],
   "suppressed_min_gradient_pct": -6.782817562166201,
   "suppressed_min_location_m": [
    1413.0,
    1423.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 19.50880746075427,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "no_bench_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 1604.0,
   "end_distance_m": 1624.0,
   "start_elevation_m": 777.4687118349628,
   "end_elevation_m": 781.3704733271137,
   "min_gradient_pct": 2.203288280016409,
   "suppressed_max_gradient_pct": 23.059636509795496,
   "suppressed_location_m": [
    1098.0,
    1118.0
   ],
   "suppressed_min_gradient_pct": 2.0573458508641806,
   "suppressed_min_location_m": [
    1413.0,
    1433.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 18.74197370885895,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1604.0,
   "end_distance_m": 1629.0,
   "start_elevation_m": 777.4687118349628,
   "end_elevation_m": 782.1542052621776,
   "min_gradient_pct": 2.4792094643162272,
   "suppressed_max_gradient_pct": 23.14900449368315,
   "suppressed_location_m": [
    1387.0,
    1412.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.5343266916866,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1615.0,
   "end_distance_m": 1665.0,
   "start_elevation_m": 779.101679488022,
   "end_elevation_m": 787.8688428338653,
   "min_gradient_pct": 4.12291490648613,
   "suppressed_max_gradient_pct": 18.204969888951837,
   "suppressed_location_m": [
    1068.0,
    1118.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.049225423965026,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1615.0,
   "end_distance_m": 1715.0,
   "start_elevation_m": 779.101679488022,
   "end_elevation_m": 796.150904911987,
   "min_gradient_pct": 5.62036413531041
  }
 ],
 "shape": {
  "ascent_concentration": 0.279,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 214.0,
  "shape_class": "sustained"
 },
 "length_m": 1863.3096872448364,
 "start_elevation_m": 598.7554447768377,
 "end_elevation_m": 815.2992942689975,
 "endpoint_gain_m": 216.54384949215978,
 "overall_gradient_pct": 11.6214631939337,
 "accumulated_ascent_m": 221.40329085232327,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 27.347352726023928,
   "start_distance_m": 1616.0,
   "end_distance_m": 1621.0,
   "midpoint_distance_m": 1618.5,
   "start_elevation_m": 779.3237244388376,
   "end_elevation_m": 780.6910920751388,
   "start_xy": [
    408344.8527376222,
    6208582.3888141895
   ],
   "end_xy": [
    408349.7690076233,
    6208581.477612084
   ]
  },
  "max_10m": {
   "gradient_pct": 24.356333954162892,
   "start_distance_m": 1615.0,
   "end_distance_m": 1625.0,
   "midpoint_distance_m": 1620.0,
   "start_elevation_m": 779.101679488022,
   "end_elevation_m": 781.5373128834383,
   "start_xy": [
    408343.869483622,
    6208582.57105461
   ],
   "end_xy": [
    408353.70202362415,
    6208580.748650399
   ]
  },
  "max_20m": {
   "gradient_pct": 19.50880746075427,
   "start_distance_m": 1604.0,
   "end_distance_m": 1624.0,
   "midpoint_distance_m": 1614.0,
   "start_elevation_m": 777.4687118349628,
   "end_elevation_m": 781.3704733271137,
   "start_xy": [
    408333.0536896197,
    6208584.575699242
   ],
   "end_xy": [
    408352.7187696239,
    6208580.930890821
   ]
  },
  "max_25m": {
   "gradient_pct": 18.74197370885895,
   "start_distance_m": 1604.0,
   "end_distance_m": 1629.0,
   "midpoint_distance_m": 1616.5,
   "start_elevation_m": 777.4687118349628,
   "end_elevation_m": 782.1542052621776,
   "start_xy": [
    408333.0536896197,
    6208584.575699242
   ],
   "end_xy": [
    408357.5544227199,
    6208581.583358203
   ]
  },
  "max_50m": {
   "gradient_pct": 17.5343266916866,
   "start_distance_m": 1615.0,
   "end_distance_m": 1665.0,
   "midpoint_distance_m": 1640.0,
   "start_elevation_m": 779.101679488022,
   "end_elevation_m": 787.8688428338653,
   "start_xy": [
    408343.869483622,
    6208582.57105461
   ],
   "end_xy": [
    408355.8532537504,
    6208613.616947195
   ]
  },
  "max_100m": {
   "gradient_pct": 17.049225423965026,
   "start_distance_m": 1615.0,
   "end_distance_m": 1715.0,
   "midpoint_distance_m": 1665.0,
   "start_elevation_m": 779.101679488022,
   "end_elevation_m": 796.150904911987,
   "start_xy": [
    408343.869483622,
    6208582.57105461
   ],
   "end_xy": [
    408365.49467873224,
    6208650.130180353
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.385670125617253,
   "start_distance_m": 1124.0,
   "end_distance_m": 1129.0,
   "midpoint_distance_m": 1126.5,
   "start_elevation_m": 732.066922217243,
   "end_elevation_m": 731.8976387109622,
   "start_xy": [
    408260.8797420014,
    6208424.531590015
   ],
   "end_xy": [
    408263.6335664253,
    6208420.368612414
   ]
  },
  "min_10m": {
   "gradient_pct": 1.2640337060781803,
   "start_distance_m": 1142.0,
   "end_distance_m": 1152.0,
   "midpoint_distance_m": 1147.0,
   "start_elevation_m": 733.418774368806,
   "end_elevation_m": 733.5451777394138,
   "start_xy": [
    408274.0906466699,
    6208412.919953698
   ],
   "end_xy": [
    408283.700251343,
    6208410.429069834
   ]
  },
  "min_20m": {
   "gradient_pct": 2.203288280016409,
   "start_distance_m": 1272.0,
   "end_distance_m": 1292.0,
   "midpoint_distance_m": 1282.0,
   "start_elevation_m": 745.2267491082252,
   "end_elevation_m": 745.6674067642285,
   "start_xy": [
    408388.18220875814,
    6208452.751045994
   ],
   "end_xy": [
    408407.9786987184,
    6208454.61315379
   ]
  },
  "min_25m": {
   "gradient_pct": 2.4792094643162272,
   "start_distance_m": 1272.0,
   "end_distance_m": 1297.0,
   "midpoint_distance_m": 1284.5,
   "start_elevation_m": 745.2267491082252,
   "end_elevation_m": 745.8465514743043,
   "start_xy": [
    408388.18220875814,
    6208452.751045994
   ],
   "end_xy": [
    408412.94577869255,
    6208454.04033922
   ]
  },
  "min_50m": {
   "gradient_pct": 4.12291490648613,
   "start_distance_m": 1261.0,
   "end_distance_m": 1311.0,
   "midpoint_distance_m": 1286.0,
   "start_elevation_m": 744.7306087306396,
   "end_elevation_m": 746.7920661838826,
   "start_xy": [
    408378.12389511475,
    6208448.466494785
   ],
   "end_xy": [
    408426.61712883494,
    6208451.150642706
   ]
  },
  "min_100m": {
   "gradient_pct": 5.62036413531041,
   "start_distance_m": 1457.0,
   "end_distance_m": 1557.0,
   "midpoint_distance_m": 1507.0,
   "start_elevation_m": 765.755294594282,
   "end_elevation_m": 771.3756587295924,
   "start_xy": [
    408439.23096880777,
    6208535.49890893
   ],
   "end_xy": [
    408344.08065446693,
    6208565.394036399
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 40.66048719714672,
   "start_distance_m": 1615.0,
   "end_distance_m": 1617.0,
   "midpoint_distance_m": 1616.0,
   "start_elevation_m": 779.101679488022,
   "end_elevation_m": 779.9148892319649,
   "start_xy": [
    408343.869483622,
    6208582.57105461
   ],
   "end_xy": [
    408345.8359916225,
    6208582.206573768
   ]
  },
  "max_3m": {
   "gradient_pct": 34.10051013387374,
   "start_distance_m": 1615.0,
   "end_distance_m": 1618.0,
   "midpoint_distance_m": 1616.5,
   "start_elevation_m": 779.101679488022,
   "end_elevation_m": 780.1246947920382,
   "start_xy": [
    408343.869483622,
    6208582.57105461
   ],
   "end_xy": [
    408346.81924562267,
    6208582.024333347
   ]
  }
 },
 "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": 0.018,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    5.0
   ],
   "minima_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.036,
   "windows_resited": [],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0
   ],
   "minima_unresolved": []
  },
  "placement_suppression": {
   "masked_fraction": 0.036,
   "windows_resited": [],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.206,
   "obstruction_max_height_m": 31.65,
   "flagged_windows_m": [
    2,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    1114.0,
    1119.0
   ],
   [
    1370.0,
    1430.0
   ]
  ],
  "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_E408-N6208_0m5@21LHD1FR-2025-03-21.tif"
  ],
  "calculated_at": "2026-09-20T06:05:13+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": [
   "E408-N6208"
  ],
  "elevation_blocks": [
   "21LHD1FR@2025-03-21"
  ],
  "ign_dalles": [
   "LHD_FXX_0408_6209_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD1FR"
  ],
  "ign_editions": [
   "2025-03-21"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0408_6209_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": 81,
   "stations_resolved": 81,
   "width_median_m": 3.5,
   "width_p10_m": 2.0,
   "width_min_m": 1.0,
   "width_max_m": 9.0,
   "bounded_share": 0.395,
   "unbounded_share": 0.605,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.5,
   "window_m": [
    1604.0,
    1629.0
   ],
   "width_at_max25_m": 4.25,
   "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": 81,
    "stations_resolved": 81,
    "width_median_m": 5.25,
    "width_p10_m": 1.25,
    "width_min_m": 0.5,
    "width_max_m": 11.0,
    "bounded_share": 0.877,
    "unbounded_share": 0.123,
    "confidence_median": 1.0,
    "width_median_bounded_m": 4.5,
    "window_m": [
     1604.0,
     1629.0
    ],
    "width_at_max25_m": 2.25,
    "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": "Etsaut",
  "county": "Pyr\u00e9n\u00e9es-Atlantiques",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}