{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (42.9640, 2.1324)",
 "slug": "discovered-lane-42-9640-2-1324",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 41.54792652423396,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 296.0,
   "end_distance_m": 298.0,
   "start_elevation_m": 395.4543586011632,
   "end_elevation_m": 396.2853171316479,
   "min_gradient_pct": -39.7313572642048,
   "suppressed_max_gradient_pct": 48.62795133111888,
   "suppressed_location_m": [
    388.0,
    390.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 31.07997774567366,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 296.0,
   "end_distance_m": 299.0,
   "start_elevation_m": 395.4543586011632,
   "end_elevation_m": 396.38675793353343,
   "min_gradient_pct": -33.61993524038098,
   "suppressed_max_gradient_pct": 46.95184117619912,
   "suppressed_location_m": [
    387.0,
    390.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.707294216210812,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 296.0,
   "end_distance_m": 301.0,
   "start_elevation_m": 395.4543586011632,
   "end_elevation_m": 396.73972331197376,
   "min_gradient_pct": -21.393165744540283,
   "suppressed_max_gradient_pct": 37.3019261181355,
   "suppressed_location_m": [
    386.0,
    391.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.376013421653283,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 124.0,
   "end_distance_m": 134.0,
   "start_elevation_m": 366.9218229140944,
   "end_elevation_m": 369.2594242562597,
   "min_gradient_pct": -12.622430690090596,
   "suppressed_max_gradient_pct": 29.016627062474072,
   "suppressed_location_m": [
    381.0,
    391.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.035566363720363,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 138.0,
   "end_distance_m": 158.0,
   "start_elevation_m": 370.0356044174365,
   "end_elevation_m": 374.6427176901806,
   "min_gradient_pct": -7.57032266252196
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.699648450858604,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 126.0,
   "end_distance_m": 151.0,
   "start_elevation_m": 367.3456165315889,
   "end_elevation_m": 373.02052864430357,
   "min_gradient_pct": -6.417378494047625
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 22.278285885619198,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 109.0,
   "end_distance_m": 159.0,
   "start_elevation_m": 363.728622119411,
   "end_elevation_m": 374.8677650622206,
   "min_gradient_pct": -2.3086041990321746
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.61230588680911,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 94.0,
   "end_distance_m": 194.0,
   "start_elevation_m": 361.0705035276686,
   "end_elevation_m": 380.68280941447773,
   "min_gradient_pct": 0.7054178327776981
  }
 ],
 "shape": {
  "ascent_concentration": 0.357,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 279.0,
  "shape_class": "sustained"
 },
 "length_m": 409.0000000000521,
 "start_elevation_m": 361.3974055957101,
 "end_elevation_m": 411.9284521683407,
 "endpoint_gain_m": 50.5310465726306,
 "overall_gradient_pct": 12.354779113111043,
 "accumulated_ascent_m": 55.85058661269903,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.707294216210812,
   "start_distance_m": 296.0,
   "end_distance_m": 301.0,
   "midpoint_distance_m": 298.5,
   "start_elevation_m": 395.4543586011632,
   "end_elevation_m": 396.73972331197376,
   "start_xy": [
    629177.8520338809,
    6207532.153175705
   ],
   "end_xy": [
    629180.7569595763,
    6207528.083604879
   ]
  },
  "max_10m": {
   "gradient_pct": 23.376013421653283,
   "start_distance_m": 124.0,
   "end_distance_m": 134.0,
   "midpoint_distance_m": 129.0,
   "start_elevation_m": 366.9218229140944,
   "end_elevation_m": 369.2594242562597,
   "start_xy": [
    629067.576239938,
    6207663.871430673
   ],
   "end_xy": [
    629074.1674257127,
    6207656.351040385
   ]
  },
  "max_20m": {
   "gradient_pct": 23.035566363720363,
   "start_distance_m": 138.0,
   "end_distance_m": 158.0,
   "midpoint_distance_m": 148.0,
   "start_elevation_m": 370.0356044174365,
   "end_elevation_m": 374.6427176901806,
   "start_xy": [
    629076.8039000225,
    6207653.34288427
   ],
   "end_xy": [
    629089.9862715718,
    6207638.302103694
   ]
  },
  "max_25m": {
   "gradient_pct": 22.699648450858604,
   "start_distance_m": 126.0,
   "end_distance_m": 151.0,
   "midpoint_distance_m": 138.5,
   "start_elevation_m": 367.3456165315889,
   "end_elevation_m": 373.02052864430357,
   "start_xy": [
    629068.894477093,
    6207662.367352615
   ],
   "end_xy": [
    629085.3724415295,
    6207643.566376896
   ]
  },
  "max_50m": {
   "gradient_pct": 22.278285885619198,
   "start_distance_m": 109.0,
   "end_distance_m": 159.0,
   "midpoint_distance_m": 134.0,
   "start_elevation_m": 363.728622119411,
   "end_elevation_m": 374.8677650622206,
   "start_xy": [
    629054.9331901636,
    6207671.533016022
   ],
   "end_xy": [
    629090.6453901492,
    6207637.550064665
   ]
  },
  "max_100m": {
   "gradient_pct": 19.61230588680911,
   "start_distance_m": 94.0,
   "end_distance_m": 194.0,
   "midpoint_distance_m": 144.0,
   "start_elevation_m": 361.0705035276686,
   "end_elevation_m": 380.68280941447773,
   "start_xy": [
    629042.0135854563,
    6207679.116532957
   ],
   "end_xy": [
    629113.8741463567,
    6207611.37099886
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -21.393165744540283,
   "start_distance_m": 67.0,
   "end_distance_m": 72.0,
   "midpoint_distance_m": 69.5,
   "start_elevation_m": 360.66359013338064,
   "end_elevation_m": 359.5939318461536,
   "start_xy": [
    629034.0391205049,
    6207703.119362519
   ],
   "end_xy": [
    629033.7655633545,
    6207698.1268514795
   ]
  },
  "min_10m": {
   "gradient_pct": -12.622430690090596,
   "start_distance_m": 62.0,
   "end_distance_m": 72.0,
   "midpoint_distance_m": 67.0,
   "start_elevation_m": 360.8561749151627,
   "end_elevation_m": 359.5939318461536,
   "start_xy": [
    629034.4743319235,
    6207708.060868997
   ],
   "end_xy": [
    629033.7655633545,
    6207698.1268514795
   ]
  },
  "min_20m": {
   "gradient_pct": -7.57032266252196,
   "start_distance_m": 56.0,
   "end_distance_m": 76.0,
   "midpoint_distance_m": 66.0,
   "start_elevation_m": 361.0585055098223,
   "end_elevation_m": 359.5444409773179,
   "start_xy": [
    629037.6437503555,
    6207713.155453064
   ],
   "end_xy": [
    629033.6323082354,
    6207694.144813106
   ]
  },
  "min_25m": {
   "gradient_pct": -6.417378494047625,
   "start_distance_m": 47.0,
   "end_distance_m": 72.0,
   "midpoint_distance_m": 59.5,
   "start_elevation_m": 361.19827646966553,
   "end_elevation_m": 359.5939318461536,
   "start_xy": [
    629042.3978780034,
    6207720.797329162
   ],
   "end_xy": [
    629033.7655633545,
    6207698.1268514795
   ]
  },
  "min_50m": {
   "gradient_pct": -2.3086041990321746,
   "start_distance_m": 22.0,
   "end_distance_m": 72.0,
   "midpoint_distance_m": 47.0,
   "start_elevation_m": 360.7482339456697,
   "end_elevation_m": 359.5939318461536,
   "start_xy": [
    629058.8057863872,
    6207739.52913212
   ],
   "end_xy": [
    629033.7655633545,
    6207698.1268514795
   ]
  },
  "min_100m": {
   "gradient_pct": 0.7054178327776981,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 361.3974055957101,
   "end_elevation_m": 362.1028234284878,
   "start_xy": [
    629069.385,
    6207758.816
   ],
   "end_xy": [
    629047.0886812097,
    6207675.916001269
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 41.54792652423396,
   "start_distance_m": 296.0,
   "end_distance_m": 298.0,
   "midpoint_distance_m": 297.0,
   "start_elevation_m": 395.4543586011632,
   "end_elevation_m": 396.2853171316479,
   "start_xy": [
    629177.8520338809,
    6207532.153175705
   ],
   "end_xy": [
    629179.014004159,
    6207530.525347374
   ]
  },
  "max_3m": {
   "gradient_pct": 31.07997774567366,
   "start_distance_m": 296.0,
   "end_distance_m": 299.0,
   "midpoint_distance_m": 297.5,
   "start_elevation_m": 395.4543586011632,
   "end_elevation_m": 396.38675793353343,
   "start_xy": [
    629177.8520338809,
    6207532.153175705
   ],
   "end_xy": [
    629179.5949892981,
    6207529.7114332095
   ]
  }
 },
 "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": {
  "texture_suppression": {
   "masked_fraction": 0.037,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 10.0,
     "start_m": 381.0,
     "end_m": 391.0,
     "raw_pct": 29.02,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 386.0,
     "end_m": 391.0,
     "raw_pct": 37.3,
     "reason": "hump+short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.507,
   "obstruction_max_height_m": 15.52,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    379.0,
    393.0
   ]
  ],
  "review": [],
  "extent": [
   "descends_at_start",
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "937d2a005af5491e462567d7f33ab563f033918b",
   "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-pyr3",
   "road_pbf": "block-batch-fr-pyr3.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": "sha256:79dd257545ed11dc"
  },
  "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_E629-N6207_0m5@21LHD3JR1-2025-04-11.tif"
  ],
  "calculated_at": "2026-09-20T09:42:23+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pyr3.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pyr3",
  "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": [
   "E629-N6207"
  ],
  "elevation_blocks": [
   "21LHD3JR1@2025-04-11"
  ],
  "ign_dalles": [
   "LHD_FXX_0629_6208_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD3JR1"
  ],
  "ign_editions": [
   "2025-04-11"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0629_6208_MNT_O_0M50_LAMB93_IGN69": "2025-04-11"
  },
  "route_summit_trim_m": 96.0,
  "route_summit_trim_loss_m": 3.2,
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 23,
   "stations_resolved": 23,
   "width_median_m": 4.5,
   "width_p10_m": 2.05,
   "width_min_m": 1.0,
   "width_max_m": 7.0,
   "bounded_share": 0.478,
   "unbounded_share": 0.522,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.5,
   "window_m": [
    126.0,
    151.0
   ],
   "width_at_max25_m": 4.5,
   "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": 23,
    "stations_resolved": 23,
    "width_median_m": 2.25,
    "width_p10_m": 0.8,
    "width_min_m": 0.5,
    "width_max_m": 8.25,
    "bounded_share": 1.0,
    "unbounded_share": 0.0,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.25,
    "window_m": [
     126.0,
     151.0
    ],
    "width_at_max25_m": 1.5,
    "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": "Festes-et-Saint-Andr\u00e9",
  "county": "Aude",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}