{
 "ocl_version": "0.1.0",
 "name": "Col du Pendu from La Chavade",
 "slug": "col-du-pendu-from-la-chavade",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 18.54865164164039,
   "diagnostic": true,
   "flags": [
    "structure_excluded_min",
    "texture_excluded",
    "texture_excluded_min"
   ],
   "start_distance_m": 1220.0,
   "end_distance_m": 1222.0,
   "start_elevation_m": 1299.6399977863794,
   "end_elevation_m": 1300.0109708192122,
   "min_gradient_pct": -10.079048485602016,
   "suppressed_max_gradient_pct": 43.61010382950781,
   "suppressed_location_m": [
    2004.0,
    2006.0
   ],
   "suppressed_min_gradient_pct": -64.27353134934037,
   "suppressed_min_location_m": [
    1992.0,
    1994.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 16.246032800237725,
   "diagnostic": true,
   "flags": [
    "structure_excluded_min",
    "texture_excluded",
    "texture_excluded_min"
   ],
   "start_distance_m": 1479.0,
   "end_distance_m": 1482.0,
   "start_elevation_m": 1319.9276038804476,
   "end_elevation_m": 1320.4149848644547,
   "min_gradient_pct": -9.732268262882826,
   "suppressed_max_gradient_pct": 42.63704413300881,
   "suppressed_location_m": [
    2004.0,
    2007.0
   ],
   "suppressed_min_gradient_pct": -54.75896319458874,
   "suppressed_min_location_m": [
    1992.0,
    1995.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 13.887799592357624,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1659.0,
   "end_distance_m": 1664.0,
   "start_elevation_m": 1333.561929120026,
   "end_elevation_m": 1334.2563190996439,
   "min_gradient_pct": -9.336756226102807,
   "suppressed_max_gradient_pct": 41.17647375389424,
   "suppressed_location_m": [
    2002.0,
    2007.0
   ],
   "suppressed_min_gradient_pct": -45.99650240395931,
   "suppressed_min_location_m": [
    1992.0,
    1997.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 12.31926152273445,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1473.0,
   "end_distance_m": 1483.0,
   "start_elevation_m": 1319.2859167662486,
   "end_elevation_m": 1320.517842918522,
   "min_gradient_pct": -8.89030267230055,
   "suppressed_max_gradient_pct": 30.580023275388157,
   "suppressed_location_m": [
    2000.0,
    2010.0
   ],
   "suppressed_min_gradient_pct": -29.1292886224187,
   "suppressed_min_location_m": [
    1990.0,
    2000.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 11.173920655513712,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min",
    "suppression_unstable",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1645.0,
   "end_distance_m": 1665.0,
   "start_elevation_m": 1332.1325095712834,
   "end_elevation_m": 1334.3672937023862,
   "min_gradient_pct": -8.62872358719983,
   "suppressed_max_gradient_pct": 15.926954565637743,
   "suppressed_location_m": [
    2000.0,
    2020.0
   ],
   "suppressed_min_gradient_pct": -13.756641672292744,
   "suppressed_min_location_m": [
    1980.0,
    2000.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 10.611377027965318,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1648.0,
   "end_distance_m": 1673.0,
   "start_elevation_m": 1332.3591751448773,
   "end_elevation_m": 1335.0120194018687,
   "min_gradient_pct": -8.60394809303125,
   "suppressed_max_gradient_pct": 13.05277910951827,
   "suppressed_location_m": [
    2000.0,
    2025.0
   ],
   "suppressed_min_gradient_pct": -10.883137593888932,
   "suppressed_min_location_m": [
    1975.0,
    2000.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 10.033648460664153,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1614.0,
   "end_distance_m": 1664.0,
   "start_elevation_m": 1329.2394948693118,
   "end_elevation_m": 1334.2563190996439,
   "min_gradient_pct": -8.383212482860927
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 9.61478477047558,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1604.0,
   "end_distance_m": 1704.0,
   "start_elevation_m": 1328.2522574699337,
   "end_elevation_m": 1337.8670422404093,
   "min_gradient_pct": -8.17723375241394
  }
 ],
 "shape": {
  "ascent_concentration": 0.457,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 25.0,
  "shape_class": "stepped"
 },
 "length_m": 6714.217923923639,
 "start_elevation_m": 1262.9123761113283,
 "end_elevation_m": 1429.3492958984375,
 "endpoint_gain_m": 166.43691978710922,
 "overall_gradient_pct": 2.4788727692926473,
 "accumulated_ascent_m": 229.1963156928132,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 13.887799592357624,
   "start_distance_m": 1659.0,
   "end_distance_m": 1664.0,
   "midpoint_distance_m": 1661.5,
   "start_elevation_m": 1333.561929120026,
   "end_elevation_m": 1334.2563190996439,
   "start_xy": [
    781034.7947621963,
    6398984.518769911
   ],
   "end_xy": [
    781037.9792877678,
    6398980.68397107
   ]
  },
  "max_10m": {
   "gradient_pct": 12.31926152273445,
   "start_distance_m": 1473.0,
   "end_distance_m": 1483.0,
   "midpoint_distance_m": 1478.0,
   "start_elevation_m": 1319.2859167662486,
   "end_elevation_m": 1320.517842918522,
   "start_xy": [
    781090.5334533597,
    6399128.718585707
   ],
   "end_xy": [
    781087.1241469485,
    6399119.317701185
   ]
  },
  "max_20m": {
   "gradient_pct": 11.173920655513712,
   "start_distance_m": 1645.0,
   "end_distance_m": 1665.0,
   "midpoint_distance_m": 1655.0,
   "start_elevation_m": 1332.1325095712834,
   "end_elevation_m": 1334.3672937023862,
   "start_xy": [
    781026.1387977583,
    6398995.522145741
   ],
   "end_xy": [
    781038.7773713944,
    6398980.08142437
   ]
  },
  "max_25m": {
   "gradient_pct": 10.611377027965318,
   "start_distance_m": 1648.0,
   "end_distance_m": 1673.0,
   "midpoint_distance_m": 1660.5,
   "start_elevation_m": 1332.3591751448773,
   "end_elevation_m": 1335.0120194018687,
   "start_xy": [
    781027.9936472807,
    6398993.164279491
   ],
   "end_xy": [
    781045.1620404074,
    6398975.261050776
   ]
  },
  "max_50m": {
   "gradient_pct": 10.033648460664153,
   "start_distance_m": 1614.0,
   "end_distance_m": 1664.0,
   "midpoint_distance_m": 1639.0,
   "start_elevation_m": 1329.2394948693118,
   "end_elevation_m": 1334.2563190996439,
   "start_xy": [
    781013.1957815508,
    6399022.996114907
   ],
   "end_xy": [
    781037.9792877678,
    6398980.68397107
   ]
  },
  "max_100m": {
   "gradient_pct": 9.61478477047558,
   "start_distance_m": 1604.0,
   "end_distance_m": 1704.0,
   "midpoint_distance_m": 1654.0,
   "start_elevation_m": 1328.2522574699337,
   "end_elevation_m": 1337.8670422404093,
   "start_xy": [
    781014.4174264132,
    6399032.921213588
   ],
   "end_xy": [
    781069.9026328329,
    6398956.582103096
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -9.336756226102807,
   "start_distance_m": 4784.0,
   "end_distance_m": 4789.0,
   "midpoint_distance_m": 4786.5,
   "start_elevation_m": 1380.2584496157478,
   "end_elevation_m": 1379.7916118044427,
   "start_xy": [
    781311.3879843862,
    6396221.601473975
   ],
   "end_xy": [
    781312.9278976729,
    6396216.844514119
   ]
  },
  "min_10m": {
   "gradient_pct": -8.89030267230055,
   "start_distance_m": 4784.0,
   "end_distance_m": 4794.0,
   "midpoint_distance_m": 4789.0,
   "start_elevation_m": 1380.2584496157478,
   "end_elevation_m": 1379.3694193485178,
   "start_xy": [
    781311.3879843862,
    6396221.601473975
   ],
   "end_xy": [
    781314.7731808547,
    6396212.207084886
   ]
  },
  "min_20m": {
   "gradient_pct": -8.62872358719983,
   "start_distance_m": 4776.0,
   "end_distance_m": 4796.0,
   "midpoint_distance_m": 4786.0,
   "start_elevation_m": 1380.9095241433927,
   "end_elevation_m": 1379.1837794259527,
   "start_xy": [
    781309.0251906449,
    6396229.238495223
   ],
   "end_xy": [
    781315.6125897603,
    6396210.391763236
   ]
  },
  "min_25m": {
   "gradient_pct": -8.60394809303125,
   "start_distance_m": 4764.0,
   "end_distance_m": 4789.0,
   "midpoint_distance_m": 4776.5,
   "start_elevation_m": 1381.9425988277005,
   "end_elevation_m": 1379.7916118044427,
   "start_xy": [
    781306.878377284,
    6396241.036955095
   ],
   "end_xy": [
    781312.9278976729,
    6396216.844514119
   ]
  },
  "min_50m": {
   "gradient_pct": -8.383212482860927,
   "start_distance_m": 4655.0,
   "end_distance_m": 4705.0,
   "midpoint_distance_m": 4680.0,
   "start_elevation_m": 1390.5431325227314,
   "end_elevation_m": 1386.351526281301,
   "start_xy": [
    781343.7050260426,
    6396342.98253922
   ],
   "end_xy": [
    781325.3370516599,
    6396296.483029502
   ]
  },
  "min_100m": {
   "gradient_pct": -8.17723375241394,
   "start_distance_m": 4625.0,
   "end_distance_m": 4725.0,
   "midpoint_distance_m": 4675.0,
   "start_elevation_m": 1392.9227536912213,
   "end_elevation_m": 1384.7455199388073,
   "start_xy": [
    781353.3623437084,
    6396371.363638595
   ],
   "end_xy": [
    781317.202854495,
    6396278.211881851
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 18.54865164164039,
   "start_distance_m": 1220.0,
   "end_distance_m": 1222.0,
   "midpoint_distance_m": 1221.0,
   "start_elevation_m": 1299.6399977863794,
   "end_elevation_m": 1300.0109708192122,
   "start_xy": [
    781069.273484458,
    6399361.305473576
   ],
   "end_xy": [
    781070.4555812632,
    6399359.692201392
   ]
  },
  "max_3m": {
   "gradient_pct": 16.246032800237725,
   "start_distance_m": 1479.0,
   "end_distance_m": 1482.0,
   "midpoint_distance_m": 1480.5,
   "start_elevation_m": 1319.9276038804476,
   "end_elevation_m": 1320.4149848644547,
   "start_xy": [
    781088.487869513,
    6399123.078054994
   ],
   "end_xy": [
    781087.4650775896,
    6399120.257789637
   ]
  }
 },
 "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": 0.001,
   "windows_resited": [],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0
   ],
   "minima_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.003,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0
   ],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 10.0,
     "start_m": 2000.0,
     "end_m": 2010.0,
     "raw_pct": 30.58,
     "reason": "mask-edge+short-step"
    }
   ],
   "advisory": [],
   "unresolved": [],
   "unstable": [
    {
     "window_m": 20.0,
     "start_m": 2000.0,
     "end_m": 2020.0,
     "raw_pct": 15.93,
     "reason": "mask-edge+spike+staircase",
     "perturbations": [
      "phase+0.000/mask+0",
      "phase+0.333/mask+1",
      "phase+0.667/mask-1"
     ],
     "perturbation_reasons": [
      "staircase+spike+mask-edge",
      "staircase+spike+mask-edge",
      ""
     ]
    }
   ]
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.014,
   "obstruction_max_height_m": 20.5,
   "flagged_windows_m": [
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    1990.0,
    1995.0
   ],
   [
    1998.0,
    2012.0
   ]
  ],
  "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-mc6",
   "road_pbf": "block-batch-fr-mc6.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_E780-N6397_0m5@21LHD4MN-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E780-N6398_0m5@21LHD4MN-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E780-N6399_0m5@21LHD4MN-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E780-N6400_0m5@21LHD4MN-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E781-N6395_0m5@21LHD4MN-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E781-N6396_0m5@21LHD4MN-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E781-N6397_0m5@21LHD4MN-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E781-N6398_0m5@21LHD4MN-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E781-N6399_0m5@21LHD4MN-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E781-N6400_0m5@21LHD4MN-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E782-N6395_0m5@21LHD4MN-2024-12-13.tif"
  ],
  "calculated_at": "2026-09-22T16:26:08+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc6.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc6",
  "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": [
   "E780-N6397",
   "E780-N6398",
   "E780-N6399",
   "E780-N6400",
   "E781-N6395",
   "E781-N6396",
   "E781-N6397",
   "E781-N6398",
   "E781-N6399",
   "E781-N6400",
   "E782-N6395"
  ],
  "elevation_blocks": [
   "21LHD4MN@2024-12-13"
  ],
  "ign_dalles": [
   "LHD_FXX_0780_6398_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0780_6399_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0780_6400_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0780_6401_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0781_6396_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0781_6397_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0781_6398_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0781_6399_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0781_6400_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0781_6401_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0782_6396_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD4MN"
  ],
  "ign_editions": [
   "2024-12-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0780_6398_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0780_6399_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0780_6400_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0780_6401_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0781_6396_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0781_6397_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0781_6398_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0781_6399_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0781_6400_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0781_6401_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0782_6396_MNT_O_0M50_LAMB93_IGN69": "2024-12-13"
  },
  "climb_origin": "named-pass",
  "via": [
   "Col de la Chavade"
  ],
  "structure_own_ways": 9,
  "suppression_unstable": [
   20.0
  ],
  "carriageway": {
   "stations": 275,
   "stations_resolved": 275,
   "width_median_m": 7.0,
   "width_p10_m": 5.5,
   "width_min_m": 1.0,
   "width_max_m": 12.0,
   "bounded_share": 0.153,
   "unbounded_share": 0.847,
   "confidence_median": 0.0,
   "width_median_bounded_m": 7.25,
   "window_m": [
    1648.0,
    1673.0
   ],
   "width_at_max25_m": 3.5,
   "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": 275,
    "stations_resolved": 275,
    "width_median_m": 10.0,
    "width_p10_m": 6.5,
    "width_min_m": 0.0,
    "width_max_m": 12.0,
    "bounded_share": 0.451,
    "unbounded_share": 0.549,
    "confidence_median": 0.0,
    "width_median_bounded_m": 8.5,
    "window_m": [
     1648.0,
     1673.0
    ],
    "width_at_max25_m": 6.5,
    "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": "Astet",
  "county": "Ard\u00e8che",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}