{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (45.3966, 4.2540)",
 "slug": "discovered-lane-45-3966-4-2540",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 43.816022706479885,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded",
    "texture_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 377.0,
   "end_distance_m": 379.0,
   "start_elevation_m": 475.60161629856043,
   "end_elevation_m": 476.47793675269,
   "min_gradient_pct": -12.632005957399883,
   "suppressed_max_gradient_pct": 197.92728620446383,
   "suppressed_location_m": [
    140.0,
    142.0
   ],
   "suppressed_min_gradient_pct": -218.34256896518696,
   "suppressed_min_location_m": [
    150.0,
    152.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 36.67267712459269,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded",
    "texture_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 220.0,
   "end_distance_m": 223.0,
   "start_elevation_m": 453.58238780666807,
   "end_elevation_m": 454.68256812040585,
   "min_gradient_pct": -12.62815876455837,
   "suppressed_max_gradient_pct": 178.9151974327524,
   "suppressed_location_m": [
    139.0,
    142.0
   ],
   "suppressed_min_gradient_pct": -146.81471865118283,
   "suppressed_min_location_m": [
    149.0,
    152.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 30.33905285861124,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 598.0,
   "end_distance_m": 603.0,
   "start_elevation_m": 499.5271566197787,
   "end_elevation_m": 501.04410926270924,
   "min_gradient_pct": -9.557618235384098,
   "suppressed_max_gradient_pct": 111.54609691258543,
   "suppressed_location_m": [
    139.0,
    144.0
   ],
   "suppressed_min_gradient_pct": -84.15737351480402,
   "suppressed_min_location_m": [
    148.0,
    153.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.37722225087782,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 621.0,
   "end_distance_m": 631.0,
   "start_elevation_m": 504.1570786389774,
   "end_elevation_m": 506.5948008640652,
   "min_gradient_pct": -3.103623605384769,
   "suppressed_max_gradient_pct": 59.65612473443002,
   "suppressed_location_m": [
    132.0,
    142.0
   ],
   "suppressed_min_gradient_pct": -39.349681444340376,
   "suppressed_min_location_m": [
    145.0,
    155.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.99202764724282,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded",
    "suppression_unstable",
    "canopy_or_structure"
   ],
   "start_distance_m": 677.0,
   "end_distance_m": 697.0,
   "start_elevation_m": 514.4141334549154,
   "end_elevation_m": 518.6125389843639,
   "min_gradient_pct": -1.7969226991701248,
   "suppressed_max_gradient_pct": 38.13081490905034,
   "suppressed_location_m": [
    122.0,
    142.0
   ],
   "suppressed_min_gradient_pct": -15.526254449761154,
   "suppressed_min_location_m": [
    145.0,
    165.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.653998023588883,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 606.0,
   "end_distance_m": 631.0,
   "start_elevation_m": 501.43130135816796,
   "end_elevation_m": 506.5948008640652,
   "min_gradient_pct": -1.7984025633893452,
   "suppressed_max_gradient_pct": 33.579283566488584,
   "suppressed_location_m": [
    117.0,
    142.0
   ],
   "suppressed_min_gradient_pct": -9.893909994618298,
   "suppressed_min_location_m": [
    142.0,
    167.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.357524672117393,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 596.0,
   "end_distance_m": 646.0,
   "start_elevation_m": 499.1187788502476,
   "end_elevation_m": 508.7975411863063,
   "min_gradient_pct": -1.5158419603844777,
   "suppressed_max_gradient_pct": 23.404027898811023,
   "suppressed_location_m": [
    95.0,
    145.0
   ],
   "suppressed_min_gradient_pct": -3.9200373341070645,
   "suppressed_min_location_m": [
    39.0,
    89.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.28460749820954,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 597.0,
   "end_distance_m": 697.0,
   "start_elevation_m": 499.3279314861544,
   "end_elevation_m": 518.6125389843639,
   "min_gradient_pct": 6.158643583691287,
   "suppressed_max_gradient_pct": 20.754520208401065,
   "suppressed_location_m": [
    613.0,
    713.0
   ],
   "suppressed_min_gradient_pct": -1.3883015580819347,
   "suppressed_min_location_m": [
    0.0,
    100.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.352,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 129.0,
  "shape_class": "sustained"
 },
 "length_m": 720.5153285510963,
 "start_elevation_m": 437.3020362060322,
 "end_elevation_m": 523.6534363906267,
 "endpoint_gain_m": 86.35140018459447,
 "overall_gradient_pct": 11.984672187091538,
 "accumulated_ascent_m": 97.12308698487897,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 30.33905285861124,
   "start_distance_m": 598.0,
   "end_distance_m": 603.0,
   "midpoint_distance_m": 600.5,
   "start_elevation_m": 499.5271566197787,
   "end_elevation_m": 501.04410926270924,
   "start_xy": [
    797928.5640575744,
    6478196.822861459
   ],
   "end_xy": [
    797923.9894731923,
    6478194.804649942
   ]
  },
  "max_10m": {
   "gradient_pct": 24.37722225087782,
   "start_distance_m": 621.0,
   "end_distance_m": 631.0,
   "midpoint_distance_m": 626.0,
   "start_elevation_m": 504.1570786389774,
   "end_elevation_m": 506.5948008640652,
   "start_xy": [
    797908.6572450678,
    6478185.3747906545
   ],
   "end_xy": [
    797900.1393970291,
    6478180.135872371
   ]
  },
  "max_20m": {
   "gradient_pct": 20.99202764724282,
   "start_distance_m": 677.0,
   "end_distance_m": 697.0,
   "midpoint_distance_m": 687.0,
   "start_elevation_m": 514.4141334549154,
   "end_elevation_m": 518.6125389843639,
   "start_xy": [
    797859.1746660214,
    6478159.4828271195
   ],
   "end_xy": [
    797840.7798853271,
    6478151.632219295
   ]
  },
  "max_25m": {
   "gradient_pct": 20.653998023588883,
   "start_distance_m": 606.0,
   "end_distance_m": 631.0,
   "midpoint_distance_m": 618.5,
   "start_elevation_m": 501.43130135816796,
   "end_elevation_m": 506.5948008640652,
   "start_xy": [
    797921.4340171259,
    6478193.23316808
   ],
   "end_xy": [
    797900.1393970291,
    6478180.135872371
   ]
  },
  "max_50m": {
   "gradient_pct": 19.357524672117393,
   "start_distance_m": 596.0,
   "end_distance_m": 646.0,
   "midpoint_distance_m": 621.0,
   "start_elevation_m": 499.1187788502476,
   "end_elevation_m": 508.7975411863063,
   "start_xy": [
    797930.3938913272,
    6478197.630146067
   ],
   "end_xy": [
    797887.362624971,
    6478172.277494944
   ]
  },
  "max_100m": {
   "gradient_pct": 19.28460749820954,
   "start_distance_m": 597.0,
   "end_distance_m": 697.0,
   "midpoint_distance_m": 647.0,
   "start_elevation_m": 499.3279314861544,
   "end_elevation_m": 518.6125389843639,
   "start_xy": [
    797929.4789744508,
    6478197.226503762
   ],
   "end_xy": [
    797840.7798853271,
    6478151.632219295
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -9.557618235384098,
   "start_distance_m": 381.0,
   "end_distance_m": 386.0,
   "midpoint_distance_m": 383.5,
   "start_elevation_m": 476.68501397699436,
   "end_elevation_m": 476.20713306522515,
   "start_xy": [
    798134.9936328937,
    6478259.027257791
   ],
   "end_xy": [
    798130.4282748898,
    6478256.988261396
   ]
  },
  "min_10m": {
   "gradient_pct": -3.103623605384769,
   "start_distance_m": 71.0,
   "end_distance_m": 81.0,
   "midpoint_distance_m": 76.0,
   "start_elevation_m": 435.3698436177668,
   "end_elevation_m": 435.0594812572283,
   "start_xy": [
    798415.6952010157,
    6478317.101731415
   ],
   "end_xy": [
    798407.1155703501,
    6478322.008268162
   ]
  },
  "min_20m": {
   "gradient_pct": -1.7969226991701248,
   "start_distance_m": 39.0,
   "end_distance_m": 59.0,
   "midpoint_distance_m": 49.0,
   "start_elevation_m": 435.7548066372034,
   "end_elevation_m": 435.39542209736936,
   "start_xy": [
    798440.6402383685,
    6478297.073583618
   ],
   "end_xy": [
    798425.2097998891,
    6478309.797638331
   ]
  },
  "min_25m": {
   "gradient_pct": -1.7984025633893452,
   "start_distance_m": 22.0,
   "end_distance_m": 47.0,
   "midpoint_distance_m": 34.5,
   "start_elevation_m": 436.00980524523084,
   "end_elevation_m": 435.5602046043835,
   "start_xy": [
    798455.0423673383,
    6478288.053538192
   ],
   "end_xy": [
    798434.4680629767,
    6478302.1632055035
   ]
  },
  "min_50m": {
   "gradient_pct": -1.5158419603844777,
   "start_distance_m": 32.0,
   "end_distance_m": 82.0,
   "midpoint_distance_m": 57.0,
   "start_elevation_m": 435.81370183225727,
   "end_elevation_m": 435.055780852065,
   "start_xy": [
    798446.5367959742,
    6478293.312364655
   ],
   "end_xy": [
    798406.1629292332,
    6478322.312365025
   ]
  },
  "min_100m": {
   "gradient_pct": 6.158643583691287,
   "start_distance_m": 380.0,
   "end_distance_m": 480.0,
   "midpoint_distance_m": 430.0,
   "start_elevation_m": 476.65021688010995,
   "end_elevation_m": 482.80886046380124,
   "start_xy": [
    798135.9067044945,
    6478259.43505707
   ],
   "end_xy": [
    798042.5585937204,
    6478223.853299054
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 43.816022706479885,
   "start_distance_m": 377.0,
   "end_distance_m": 379.0,
   "midpoint_distance_m": 378.0,
   "start_elevation_m": 475.60161629856043,
   "end_elevation_m": 476.47793675269,
   "start_xy": [
    798138.6459192968,
    6478260.658454906
   ],
   "end_xy": [
    798136.8197760952,
    6478259.8428563485
   ]
  },
  "max_3m": {
   "gradient_pct": 36.67267712459269,
   "start_distance_m": 220.0,
   "end_distance_m": 223.0,
   "midpoint_distance_m": 221.5,
   "start_elevation_m": 453.58238780666807,
   "end_elevation_m": 454.68256812040585,
   "start_xy": [
    798281.5511296517,
    6478324.053765021
   ],
   "end_xy": [
    798278.5592816446,
    6478323.832754835
   ]
  }
 },
 "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": 0.122,
   "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,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "minima_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.171,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    20.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0
   ],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 20.0,
     "start_m": 315.0,
     "end_m": 335.0,
     "raw_pct": 21.05,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 527.0,
     "end_m": 532.0,
     "raw_pct": 34.26,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": [],
   "unstable": [
    {
     "window_m": 20.0,
     "start_m": 677.0,
     "end_m": 697.0,
     "raw_pct": 20.99,
     "reason": "mask-edge",
     "perturbations": [
      "phase+0.000/mask+0",
      "phase+0.333/mask+1",
      "phase+0.667/mask-1"
     ],
     "perturbation_reasons": [
      "",
      "",
      "mask-edge"
     ]
    }
   ]
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.666,
   "obstruction_max_height_m": 25.87,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    0.0,
    21.0
   ],
   [
    85.0,
    94.0
   ],
   [
    128.0,
    168.0
   ],
   [
    313.0,
    337.0
   ],
   [
    525.0,
    534.0
   ],
   [
    575.0,
    582.0
   ],
   [
    703.0,
    709.0
   ]
  ],
  "review": [],
  "extent": [
   "descends_at_start",
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "076a8e7f889cfb3c2cf6b3de65a6030c7155b1f0",
   "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-mc7",
   "road_pbf": "block-batch-fr-mc7.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_E797-N6478_0m5@22LHD5NM-2025-02-27.tif",
   "data/cache/fr/ign-lidarhd_dtm_E798-N6478_0m5@22LHD5NM-2025-02-27.tif"
  ],
  "calculated_at": "2026-09-22T12:25:38+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc7.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc7",
  "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": [
   "E797-N6478",
   "E798-N6478"
  ],
  "elevation_blocks": [
   "22LHD5NM@2025-02-27"
  ],
  "ign_dalles": [
   "LHD_FXX_0797_6479_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0798_6479_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD5NM"
  ],
  "ign_editions": [
   "2025-02-27"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0797_6479_MNT_O_0M50_LAMB93_IGN69": "2025-02-27",
   "LHD_FXX_0798_6479_MNT_O_0M50_LAMB93_IGN69": "2025-02-27"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 2,
  "structure_mask_ranges_m": [
   [
    0.0,
    16.9
   ],
   [
    133.2,
    163.2
   ]
  ],
  "suppression_unstable": [
   20.0
  ],
  "carriageway": {
   "stations": 35,
   "stations_resolved": 35,
   "width_median_m": 2.75,
   "width_p10_m": 1.25,
   "width_min_m": 0.5,
   "width_max_m": 10.25,
   "bounded_share": 0.4,
   "unbounded_share": 0.6,
   "confidence_median": 0.0,
   "width_median_bounded_m": 2.88,
   "window_m": [
    606.0,
    631.0
   ],
   "width_at_max25_m": 2.25,
   "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": 35,
    "stations_resolved": 35,
    "width_median_m": 2.25,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.857,
    "unbounded_share": 0.143,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.12,
    "window_m": [
     606.0,
     631.0
    ],
    "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": "Fraisses",
  "county": "Loire",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}