{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (45.3669, 2.6623)",
 "slug": "discovered-lane-45-3669-2-6623",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 43.5819189190056,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1336.0,
   "end_distance_m": 1338.0,
   "start_elevation_m": 761.6259307988867,
   "end_elevation_m": 762.4975691772668,
   "min_gradient_pct": -53.46005335249515,
   "suppressed_max_gradient_pct": 105.47521251556304,
   "suppressed_location_m": [
    1017.0,
    1019.0
   ],
   "suppressed_min_gradient_pct": -70.05500451916191,
   "suppressed_min_location_m": [
    2250.0,
    2252.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 42.260877594594604,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1335.0,
   "end_distance_m": 1338.0,
   "start_elevation_m": 761.2297428494289,
   "end_elevation_m": 762.4975691772668,
   "min_gradient_pct": -48.70595130886007,
   "suppressed_max_gradient_pct": 77.74888817222443,
   "suppressed_location_m": [
    1016.0,
    1019.0
   ],
   "suppressed_min_gradient_pct": -58.75703716296433,
   "suppressed_min_location_m": [
    709.0,
    712.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 35.817061950785956,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "suppression_unstable",
    "canopy_or_structure"
   ],
   "start_distance_m": 1333.0,
   "end_distance_m": 1338.0,
   "start_elevation_m": 760.7067160797275,
   "end_elevation_m": 762.4975691772668,
   "min_gradient_pct": -38.338640646970816,
   "suppressed_max_gradient_pct": 51.15947675211828,
   "suppressed_location_m": [
    1015.0,
    1020.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 27.70364103490806,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1154.0,
   "end_distance_m": 1164.0,
   "start_elevation_m": 734.7661170980311,
   "end_elevation_m": 737.536481201522,
   "min_gradient_pct": -21.453668184836943,
   "suppressed_max_gradient_pct": 41.45653026294781,
   "suppressed_location_m": [
    1009.0,
    1019.0
   ],
   "suppressed_min_gradient_pct": -22.795611239776008,
   "suppressed_min_location_m": [
    2250.0,
    2260.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.428085113401153,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1144.0,
   "end_distance_m": 1164.0,
   "start_elevation_m": 733.0508641788417,
   "end_elevation_m": 737.536481201522,
   "min_gradient_pct": -15.557849045867442,
   "suppressed_max_gradient_pct": 35.21550918285868,
   "suppressed_location_m": [
    1254.0,
    1274.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.11385591318549,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "no_bench_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1139.0,
   "end_distance_m": 1164.0,
   "start_elevation_m": 732.2580172232256,
   "end_elevation_m": 737.536481201522,
   "min_gradient_pct": -15.174654117077807,
   "suppressed_max_gradient_pct": 33.149941488419245,
   "suppressed_location_m": [
    1252.0,
    1277.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.579948055822115,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1114.0,
   "end_distance_m": 1164.0,
   "start_elevation_m": 728.7465071736109,
   "end_elevation_m": 737.536481201522,
   "min_gradient_pct": -12.220747981792329,
   "suppressed_max_gradient_pct": 22.47433609460495,
   "suppressed_location_m": [
    1237.0,
    1287.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.181611673633142,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1064.0,
   "end_distance_m": 1164.0,
   "start_elevation_m": 722.3548695278888,
   "end_elevation_m": 737.536481201522,
   "min_gradient_pct": -5.861703407296432,
   "suppressed_max_gradient_pct": 17.947400391610245,
   "suppressed_location_m": [
    1186.0,
    1286.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.401,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 132.0,
  "shape_class": "sustained"
 },
 "length_m": 3987.2514312268468,
 "start_elevation_m": 635.7696905272778,
 "end_elevation_m": 864.2801925483399,
 "endpoint_gain_m": 228.51050202106205,
 "overall_gradient_pct": 5.731028152161228,
 "accumulated_ascent_m": 275.05052287561307,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 35.817061950785956,
   "start_distance_m": 1333.0,
   "end_distance_m": 1338.0,
   "midpoint_distance_m": 1335.5,
   "start_elevation_m": 760.7067160797275,
   "end_elevation_m": 762.4975691772668,
   "start_xy": [
    673872.9417206531,
    6474019.217945514
   ],
   "end_xy": [
    673869.9348128188,
    6474023.212755307
   ]
  },
  "max_10m": {
   "gradient_pct": 27.70364103490806,
   "start_distance_m": 1154.0,
   "end_distance_m": 1164.0,
   "midpoint_distance_m": 1159.0,
   "start_elevation_m": 734.7661170980311,
   "end_elevation_m": 737.536481201522,
   "start_xy": [
    674005.1527921424,
    6473972.024235953
   ],
   "end_xy": [
    673996.3714901414,
    6473967.240018654
   ]
  },
  "max_20m": {
   "gradient_pct": 22.428085113401153,
   "start_distance_m": 1144.0,
   "end_distance_m": 1164.0,
   "midpoint_distance_m": 1154.0,
   "start_elevation_m": 733.0508641788417,
   "end_elevation_m": 737.536481201522,
   "start_xy": [
    674013.9340941433,
    6473976.808453253
   ],
   "end_xy": [
    673996.3714901414,
    6473967.240018654
   ]
  },
  "max_25m": {
   "gradient_pct": 21.11385591318549,
   "start_distance_m": 1139.0,
   "end_distance_m": 1164.0,
   "midpoint_distance_m": 1151.5,
   "start_elevation_m": 732.2580172232256,
   "end_elevation_m": 737.536481201522,
   "start_xy": [
    674018.3247451438,
    6473979.200561902
   ],
   "end_xy": [
    673996.3714901414,
    6473967.240018654
   ]
  },
  "max_50m": {
   "gradient_pct": 17.579948055822115,
   "start_distance_m": 1114.0,
   "end_distance_m": 1164.0,
   "midpoint_distance_m": 1139.0,
   "start_elevation_m": 728.7465071736109,
   "end_elevation_m": 737.536481201522,
   "start_xy": [
    674040.3253405083,
    6473991.073775883
   ],
   "end_xy": [
    673996.3714901414,
    6473967.240018654
   ]
  },
  "max_100m": {
   "gradient_pct": 15.181611673633142,
   "start_distance_m": 1064.0,
   "end_distance_m": 1164.0,
   "midpoint_distance_m": 1114.0,
   "start_elevation_m": 722.3548695278888,
   "end_elevation_m": 737.536481201522,
   "start_xy": [
    674084.3322247677,
    6474014.809700929
   ],
   "end_xy": [
    673996.3714901414,
    6473967.240018654
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -38.338640646970816,
   "start_distance_m": 674.0,
   "end_distance_m": 679.0,
   "midpoint_distance_m": 676.5,
   "start_elevation_m": 687.8559849109888,
   "end_elevation_m": 685.9390528786403,
   "start_xy": [
    674195.196628785,
    6473802.319613429
   ],
   "end_xy": [
    674190.6177100836,
    6473800.572347162
   ]
  },
  "min_10m": {
   "gradient_pct": -21.453668184836943,
   "start_distance_m": 669.0,
   "end_distance_m": 679.0,
   "midpoint_distance_m": 674.0,
   "start_elevation_m": 688.084419697124,
   "end_elevation_m": 685.9390528786403,
   "start_xy": [
    674199.502755096,
    6473804.860730545
   ],
   "end_xy": [
    674190.6177100836,
    6473800.572347162
   ]
  },
  "min_20m": {
   "gradient_pct": -15.557849045867442,
   "start_distance_m": 2059.0,
   "end_distance_m": 2079.0,
   "midpoint_distance_m": 2069.0,
   "start_elevation_m": 796.4950140828794,
   "end_elevation_m": 793.3834442737059,
   "start_xy": [
    673675.1678280697,
    6474449.795722175
   ],
   "end_xy": [
    673678.9038872577,
    6474469.443670205
   ]
  },
  "min_25m": {
   "gradient_pct": -15.174654117077807,
   "start_distance_m": 2059.0,
   "end_distance_m": 2084.0,
   "midpoint_distance_m": 2071.5,
   "start_elevation_m": 796.4950140828794,
   "end_elevation_m": 792.7013505536099,
   "start_xy": [
    673675.1678280697,
    6474449.795722175
   ],
   "end_xy": [
    673679.8379020547,
    6474474.3556572115
   ]
  },
  "min_50m": {
   "gradient_pct": -12.220747981792329,
   "start_distance_m": 2054.0,
   "end_distance_m": 2104.0,
   "midpoint_distance_m": 2079.0,
   "start_elevation_m": 796.9937969201128,
   "end_elevation_m": 790.8834229292166,
   "start_xy": [
    673674.2338132727,
    6474444.883735169
   ],
   "end_xy": [
    673684.1899851348,
    6474493.7514339965
   ]
  },
  "min_100m": {
   "gradient_pct": -5.861703407296432,
   "start_distance_m": 3137.0,
   "end_distance_m": 3237.0,
   "midpoint_distance_m": 3187.0,
   "start_elevation_m": 839.509680538662,
   "end_elevation_m": 833.6479771313656,
   "start_xy": [
    673556.5683194656,
    6475309.963655729
   ],
   "end_xy": [
    673491.0095880631,
    6475385.44836787
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 43.5819189190056,
   "start_distance_m": 1336.0,
   "end_distance_m": 1338.0,
   "midpoint_distance_m": 1337.0,
   "start_elevation_m": 761.6259307988867,
   "end_elevation_m": 762.4975691772668,
   "start_xy": [
    673871.1375759525,
    6474021.61483139
   ],
   "end_xy": [
    673869.9348128188,
    6474023.212755307
   ]
  },
  "max_3m": {
   "gradient_pct": 42.260877594594604,
   "start_distance_m": 1335.0,
   "end_distance_m": 1338.0,
   "midpoint_distance_m": 1336.5,
   "start_elevation_m": 761.2297428494289,
   "end_elevation_m": 762.4975691772668,
   "start_xy": [
    673871.7389575193,
    6474020.815869431
   ],
   "end_xy": [
    673869.9348128188,
    6474023.212755307
   ]
  }
 },
 "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": 0.023,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    10.0
   ],
   "minima_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.043,
   "windows_resited": [
    25.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.05,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 987.0,
     "end_m": 1012.0,
     "raw_pct": 21.37,
     "reason": "hump+mask-edge"
    },
    {
     "window_m": 20.0,
     "start_m": 992.0,
     "end_m": 1012.0,
     "raw_pct": 24.68,
     "reason": "staircase+hump+mask-edge"
    },
    {
     "window_m": 10.0,
     "start_m": 1002.0,
     "end_m": 1012.0,
     "raw_pct": 39.7,
     "reason": "hump+mask-edge+short-step"
    },
    {
     "window_m": 5.0,
     "start_m": 1007.0,
     "end_m": 1012.0,
     "raw_pct": 45.49,
     "reason": "hump+mask-edge+short-step"
    }
   ],
   "advisory": [],
   "unresolved": [],
   "unstable": [
    {
     "window_m": 5.0,
     "start_m": 1333.0,
     "end_m": 1338.0,
     "raw_pct": 35.82,
     "reason": "short-step",
     "perturbations": [
      "phase+0.000/mask+0",
      "phase+0.333/mask+1",
      "phase+0.667/mask-1"
     ],
     "perturbation_reasons": [
      "",
      "",
      "short-step"
     ]
    }
   ]
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.519,
   "obstruction_max_height_m": 32.46,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    0.0,
    20.0
   ],
   [
    708.0,
    713.0
   ],
   [
    716.0,
    721.0
   ],
   [
    830.0,
    880.0
   ],
   [
    985.0,
    1021.0
   ],
   [
    1252.0,
    1258.0
   ],
   [
    1265.0,
    1275.0
   ],
   [
    1296.0,
    1301.0
   ],
   [
    1425.0,
    1430.0
   ],
   [
    1434.0,
    1439.0
   ],
   [
    2209.0,
    2217.0
   ],
   [
    2220.0,
    2254.0
   ]
  ],
  "review": [
   "short_window_divergence"
  ],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "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-mc4",
   "road_pbf": "block-batch-fr-mc4.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_E673-N6473_0m5@22LHD3KM-2025-09-17.tif",
   "data/cache/fr/ign-lidarhd_dtm_E673-N6474_0m5@22LHD3KM-2025-09-17.tif",
   "data/cache/fr/ign-lidarhd_dtm_E673-N6475_0m5@22LHD3KM-2025-09-17.tif",
   "data/cache/fr/ign-lidarhd_dtm_E674-N6473_0m5@22LHD3KM-2025-09-17.tif",
   "data/cache/fr/ign-lidarhd_dtm_E674-N6474_0m5@22LHD3KM-2025-09-17.tif"
  ],
  "calculated_at": "2026-09-22T17:56:39+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc4.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc4",
  "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": [
   "E673-N6473",
   "E673-N6474",
   "E673-N6475",
   "E674-N6473",
   "E674-N6474"
  ],
  "elevation_blocks": [
   "22LHD3KM@2025-09-17"
  ],
  "ign_dalles": [
   "LHD_FXX_0673_6474_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0673_6475_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0673_6476_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0674_6474_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0674_6475_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD3KM"
  ],
  "ign_editions": [
   "2025-09-17"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0673_6474_MNT_O_0M50_LAMB93_IGN69": "2025-09-17",
   "LHD_FXX_0673_6475_MNT_O_0M50_LAMB93_IGN69": "2025-09-17",
   "LHD_FXX_0673_6476_MNT_O_0M50_LAMB93_IGN69": "2025-09-17",
   "LHD_FXX_0674_6474_MNT_O_0M50_LAMB93_IGN69": "2025-09-17",
   "LHD_FXX_0674_6475_MNT_O_0M50_LAMB93_IGN69": "2025-09-17"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 2,
  "structure_mask_ranges_m": [
   [
    0.0,
    15.0
   ]
  ],
  "suppression_unstable": [
   5.0
  ],
  "carriageway": {
   "stations": 166,
   "stations_resolved": 166,
   "width_median_m": 4.25,
   "width_p10_m": 2.12,
   "width_min_m": 1.0,
   "width_max_m": 11.5,
   "bounded_share": 0.488,
   "unbounded_share": 0.512,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.25,
   "window_m": [
    1139.0,
    1164.0
   ],
   "width_at_max25_m": 3.75,
   "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": 166,
    "stations_resolved": 166,
    "width_median_m": 2.75,
    "width_p10_m": 0.75,
    "width_min_m": 0.0,
    "width_max_m": 12.0,
    "bounded_share": 0.873,
    "unbounded_share": 0.127,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.5,
    "window_m": [
     1139.0,
     1164.0
    ],
    "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": "Tr\u00e9mouille",
  "county": "Cantal",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}