{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (45.5460, 1.7403)",
 "slug": "discovered-lane-45-5460-1-7403",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 31.912462770000616,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1236.0,
   "end_distance_m": 1238.0,
   "start_elevation_m": 439.82015320632036,
   "end_elevation_m": 440.45840246172037,
   "min_gradient_pct": -14.19026141508084,
   "suppressed_max_gradient_pct": 56.63964692718935,
   "suppressed_location_m": [
    896.0,
    898.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 29.136451410763204,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1230.0,
   "end_distance_m": 1233.0,
   "start_elevation_m": 438.3295099285957,
   "end_elevation_m": 439.2036034709186,
   "min_gradient_pct": -10.848012727567871,
   "suppressed_max_gradient_pct": 51.24007065665145,
   "suppressed_location_m": [
    895.0,
    898.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.432825912563658,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1229.0,
   "end_distance_m": 1234.0,
   "start_elevation_m": 438.1125650366609,
   "end_elevation_m": 439.4342063322891,
   "min_gradient_pct": -10.05968173668407,
   "suppressed_max_gradient_pct": 43.70991777745871,
   "suppressed_location_m": [
    893.0,
    898.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.2620888399332,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1230.0,
   "end_distance_m": 1240.0,
   "start_elevation_m": 438.3295099285957,
   "end_elevation_m": 440.85571881258903,
   "min_gradient_pct": -9.567406727269372,
   "suppressed_max_gradient_pct": 32.19922515500684,
   "suppressed_location_m": [
    892.0,
    902.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.356824929814763,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1228.0,
   "end_distance_m": 1248.0,
   "start_elevation_m": 437.9492407210884,
   "end_elevation_m": 442.62060570705137,
   "min_gradient_pct": -8.983983767331836,
   "suppressed_max_gradient_pct": 24.487882070311286,
   "suppressed_location_m": [
    892.0,
    912.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.033855173575148,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1223.0,
   "end_distance_m": 1248.0,
   "start_elevation_m": 437.1121419136576,
   "end_elevation_m": 442.62060570705137,
   "min_gradient_pct": -8.554812414642356,
   "suppressed_max_gradient_pct": 22.425870030692522,
   "suppressed_location_m": [
    879.0,
    904.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.369479939173402,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1214.0,
   "end_distance_m": 1264.0,
   "start_elevation_m": 435.51831300392763,
   "end_elevation_m": 445.20305297351433,
   "min_gradient_pct": -7.997295483159633
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.749165869676744,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1173.0,
   "end_distance_m": 1273.0,
   "start_elevation_m": 429.89110523783734,
   "end_elevation_m": 446.6402711075141,
   "min_gradient_pct": -6.730829243773655,
   "suppressed_max_gradient_pct": 17.938599172118415,
   "suppressed_location_m": [
    804.0,
    904.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.473,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 206.0,
  "shape_class": "stepped"
 },
 "length_m": 1848.0000000000343,
 "start_elevation_m": 363.11034170556326,
 "end_elevation_m": 496.13999515933847,
 "endpoint_gain_m": 133.0296534537752,
 "overall_gradient_pct": 7.1985743210915984,
 "accumulated_ascent_m": 146.050107303083,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.432825912563658,
   "start_distance_m": 1229.0,
   "end_distance_m": 1234.0,
   "midpoint_distance_m": 1231.5,
   "start_elevation_m": 438.1125650366609,
   "end_elevation_m": 439.4342063322891,
   "start_xy": [
    601865.5296539317,
    6494936.331324516
   ],
   "end_xy": [
    601870.4029389553,
    6494935.2128017945
   ]
  },
  "max_10m": {
   "gradient_pct": 25.2620888399332,
   "start_distance_m": 1230.0,
   "end_distance_m": 1240.0,
   "midpoint_distance_m": 1235.0,
   "start_elevation_m": 438.3295099285957,
   "end_elevation_m": 440.85571881258903,
   "start_xy": [
    601866.5043109366,
    6494936.107619972
   ],
   "end_xy": [
    601876.2508809837,
    6494933.870574528
   ]
  },
  "max_20m": {
   "gradient_pct": 23.356824929814763,
   "start_distance_m": 1228.0,
   "end_distance_m": 1248.0,
   "midpoint_distance_m": 1238.0,
   "start_elevation_m": 437.9492407210884,
   "end_elevation_m": 442.62060570705137,
   "start_xy": [
    601864.554996927,
    6494936.555029061
   ],
   "end_xy": [
    601884.1081120758,
    6494932.575158336
   ]
  },
  "max_25m": {
   "gradient_pct": 22.033855173575148,
   "start_distance_m": 1223.0,
   "end_distance_m": 1248.0,
   "midpoint_distance_m": 1235.5,
   "start_elevation_m": 437.1121419136576,
   "end_elevation_m": 442.62060570705137,
   "start_xy": [
    601859.6794602645,
    6494937.663442946
   ],
   "end_xy": [
    601884.1081120758,
    6494932.575158336
   ]
  },
  "max_50m": {
   "gradient_pct": 19.369479939173402,
   "start_distance_m": 1214.0,
   "end_distance_m": 1264.0,
   "midpoint_distance_m": 1239.0,
   "start_elevation_m": 435.51831300392763,
   "end_elevation_m": 445.20305297351433,
   "start_xy": [
    601850.8822992585,
    6494939.563431954
   ],
   "end_xy": [
    601900.0994846559,
    6494932.179532784
   ]
  },
  "max_100m": {
   "gradient_pct": 16.749165869676744,
   "start_distance_m": 1173.0,
   "end_distance_m": 1273.0,
   "midpoint_distance_m": 1223.0,
   "start_elevation_m": 429.89110523783734,
   "end_elevation_m": 446.6402711075141,
   "start_xy": [
    601810.8103798915,
    6494934.28240011
   ],
   "end_xy": [
    601909.0723797248,
    6494931.481568542
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -10.05968173668407,
   "start_distance_m": 378.0,
   "end_distance_m": 383.0,
   "midpoint_distance_m": 380.5,
   "start_elevation_m": 365.60828618055325,
   "end_elevation_m": 365.10530209371905,
   "start_xy": [
    601699.4327784125,
    6495278.831729872
   ],
   "end_xy": [
    601697.9107749863,
    6495274.069009476
   ]
  },
  "min_10m": {
   "gradient_pct": -9.567406727269372,
   "start_distance_m": 376.0,
   "end_distance_m": 386.0,
   "midpoint_distance_m": 381.0,
   "start_elevation_m": 365.77886441791713,
   "end_elevation_m": 364.8221237451902,
   "start_xy": [
    601700.041579783,
    6495280.7368180305
   ],
   "end_xy": [
    601696.9975729305,
    6495271.211377238
   ]
  },
  "min_20m": {
   "gradient_pct": -8.983983767331836,
   "start_distance_m": 369.0,
   "end_distance_m": 389.0,
   "midpoint_distance_m": 379.0,
   "start_elevation_m": 366.378151956358,
   "end_elevation_m": 364.58135520289164,
   "start_xy": [
    601702.1723845797,
    6495287.404626585
   ],
   "end_xy": [
    601696.0843708748,
    6495268.353745
   ]
  },
  "min_25m": {
   "gradient_pct": -8.554812414642356,
   "start_distance_m": 369.0,
   "end_distance_m": 394.0,
   "midpoint_distance_m": 381.5,
   "start_elevation_m": 366.378151956358,
   "end_elevation_m": 364.2394488526974,
   "start_xy": [
    601702.1723845797,
    6495287.404626585
   ],
   "end_xy": [
    601694.5623674487,
    6495263.591024605
   ]
  },
  "min_50m": {
   "gradient_pct": -7.997295483159633,
   "start_distance_m": 369.0,
   "end_distance_m": 419.0,
   "midpoint_distance_m": 394.0,
   "start_elevation_m": 366.378151956358,
   "end_elevation_m": 362.3795042147782,
   "start_xy": [
    601702.1723845797,
    6495287.404626585
   ],
   "end_xy": [
    601686.9523503176,
    6495239.777422625
   ]
  },
  "min_100m": {
   "gradient_pct": -6.730829243773655,
   "start_distance_m": 355.0,
   "end_distance_m": 455.0,
   "midpoint_distance_m": 405.0,
   "start_elevation_m": 367.0647649084559,
   "end_elevation_m": 360.33393566468226,
   "start_xy": [
    601706.4339941731,
    6495300.740243694
   ],
   "end_xy": [
    601669.3925097082,
    6495208.351873734
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 31.912462770000616,
   "start_distance_m": 1236.0,
   "end_distance_m": 1238.0,
   "midpoint_distance_m": 1237.0,
   "start_elevation_m": 439.82015320632036,
   "end_elevation_m": 440.45840246172037,
   "start_xy": [
    601872.3522529647,
    6494934.765392706
   ],
   "end_xy": [
    601874.3015669743,
    6494934.317983617
   ]
  },
  "max_3m": {
   "gradient_pct": 29.136451410763204,
   "start_distance_m": 1230.0,
   "end_distance_m": 1233.0,
   "midpoint_distance_m": 1231.5,
   "start_elevation_m": 438.3295099285957,
   "end_elevation_m": 439.2036034709186,
   "start_xy": [
    601866.5043109366,
    6494936.107619972
   ],
   "end_xy": [
    601869.4282819506,
    6494935.436506338
   ]
  }
 },
 "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": 0.015,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    100.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.421,
   "obstruction_max_height_m": 33.08,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    0.0,
    20.0
   ],
   [
    894.0,
    899.0
   ]
  ],
  "review": [],
  "extent": []
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "1cc9fdcd6556a02163cb21acb2293cad3067d2a1",
   "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-mc2",
   "road_pbf": "block-batch-fr-mc2.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:af4eae1f5df9e232"
  },
  "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_E601-N6494_0m5@22LHD3JL-2025-06-30.tif",
   "data/cache/fr/ign-lidarhd_dtm_E601-N6495_0m5@22LHD3JL-2025-06-30.tif",
   "data/cache/fr/ign-lidarhd_dtm_E602-N6494_0m5@22LHD3JL-2025-06-30.tif",
   "data/cache/fr/ign-lidarhd_dtm_E602-N6495_0m5@22LHD3JL-2025-06-30.tif"
  ],
  "calculated_at": "2026-09-22T17:14:39+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc2.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc2",
  "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": [
   "E601-N6494",
   "E601-N6495",
   "E602-N6494",
   "E602-N6495"
  ],
  "elevation_blocks": [
   "22LHD3JL@2025-06-30"
  ],
  "ign_dalles": [
   "LHD_FXX_0601_6495_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0601_6496_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0602_6495_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0602_6496_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD3JL"
  ],
  "ign_editions": [
   "2025-06-30"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0601_6495_MNT_O_0M50_LAMB93_IGN69": "2025-06-30",
   "LHD_FXX_0601_6496_MNT_O_0M50_LAMB93_IGN69": "2025-06-30",
   "LHD_FXX_0602_6495_MNT_O_0M50_LAMB93_IGN69": "2025-06-30",
   "LHD_FXX_0602_6496_MNT_O_0M50_LAMB93_IGN69": "2025-06-30"
  },
  "route_summit_trim_m": 405.1,
  "route_summit_trim_loss_m": 13.9,
  "climb_origin": "discovered",
  "structure_own_ways": 2,
  "structure_mask_ranges_m": [
   [
    0.0,
    15.0
   ]
  ],
  "carriageway": {
   "stations": 80,
   "stations_resolved": 80,
   "width_median_m": 4.75,
   "width_p10_m": 1.98,
   "width_min_m": 1.0,
   "width_max_m": 10.25,
   "bounded_share": 0.225,
   "unbounded_share": 0.775,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.38,
   "window_m": [
    1223.0,
    1248.0
   ],
   "width_at_max25_m": 3.25,
   "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": 80,
    "stations_resolved": 80,
    "width_median_m": 3.5,
    "width_p10_m": 0.5,
    "width_min_m": 0.5,
    "width_max_m": 11.25,
    "bounded_share": 0.875,
    "unbounded_share": 0.125,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.0,
    "window_m": [
     1223.0,
     1248.0
    ],
    "width_at_max25_m": 2.0,
    "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": "Soudaine-Lavinadi\u00e8re",
  "county": "Corr\u00e8ze",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}