{
 "ocl_version": "0.1.0",
 "name": "Col des Quatre Vios from La Batie",
 "slug": "col-des-quatre-vios-from-la-batie",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 35.44958823157458,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 9019.0,
   "end_distance_m": 9021.0,
   "start_elevation_m": 1067.746033900743,
   "end_elevation_m": 1068.4550256653745,
   "min_gradient_pct": -47.53075318453739,
   "suppressed_max_gradient_pct": 80.66223190145365,
   "suppressed_location_m": [
    433.0,
    435.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 31.601661888779137,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 9019.0,
   "end_distance_m": 9022.0,
   "start_elevation_m": 1067.746033900743,
   "end_elevation_m": 1068.6940837574064,
   "min_gradient_pct": -48.39563960327572,
   "suppressed_max_gradient_pct": 72.38940780163527,
   "suppressed_location_m": [
    432.0,
    435.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.335687636606053,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "no_bench_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 9860.0,
   "end_distance_m": 9865.0,
   "start_elevation_m": 1117.072525241857,
   "end_elevation_m": 1118.1393096236873,
   "min_gradient_pct": -38.41420709815338,
   "suppressed_max_gradient_pct": 53.5593255615845,
   "suppressed_location_m": [
    431.0,
    436.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 14.218444244086186,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 9860.0,
   "end_distance_m": 9870.0,
   "start_elevation_m": 1117.072525241857,
   "end_elevation_m": 1118.4943696662656,
   "min_gradient_pct": -22.596123244334194,
   "suppressed_max_gradient_pct": 35.155059525466186,
   "suppressed_location_m": [
    428.0,
    438.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 12.015863031914478,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 8991.0,
   "end_distance_m": 9011.0,
   "start_elevation_m": 1065.4291081210843,
   "end_elevation_m": 1067.8322807274672,
   "min_gradient_pct": -8.490065900473382,
   "suppressed_max_gradient_pct": 20.88538661747691,
   "suppressed_location_m": [
    428.0,
    448.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 10.475713217477278,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 8997.0,
   "end_distance_m": 9022.0,
   "start_elevation_m": 1066.075155453037,
   "end_elevation_m": 1068.6940837574064,
   "min_gradient_pct": -5.769392236759813,
   "suppressed_max_gradient_pct": 17.94895865204171,
   "suppressed_location_m": [
    428.0,
    453.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 8.4516433067256,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 8972.0,
   "end_distance_m": 9022.0,
   "start_elevation_m": 1064.4682621040436,
   "end_elevation_m": 1068.6940837574064,
   "min_gradient_pct": -0.03924056556479627,
   "suppressed_max_gradient_pct": 12.052388894672049,
   "suppressed_location_m": [
    428.0,
    478.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 7.158932343294737,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 8922.0,
   "end_distance_m": 9022.0,
   "start_elevation_m": 1061.5351514141116,
   "end_elevation_m": 1068.6940837574064,
   "min_gradient_pct": 2.57786868705125,
   "suppressed_max_gradient_pct": 8.60909335500719,
   "suppressed_location_m": [
    428.0,
    528.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.293,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 22.0,
  "shape_class": "sustained"
 },
 "length_m": 10409.637130873722,
 "start_elevation_m": 634.7533106836057,
 "end_elevation_m": 1150.8692760859374,
 "endpoint_gain_m": 516.1159654023317,
 "overall_gradient_pct": 4.958059141865707,
 "accumulated_ascent_m": 533.1654142802728,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.335687636606053,
   "start_distance_m": 9860.0,
   "end_distance_m": 9865.0,
   "midpoint_distance_m": 9862.5,
   "start_elevation_m": 1117.072525241857,
   "end_elevation_m": 1118.1393096236873,
   "start_xy": [
    810634.4783749476,
    6411208.134214404
   ],
   "end_xy": [
    810630.1040605475,
    6411205.724454632
   ]
  },
  "max_10m": {
   "gradient_pct": 14.218444244086186,
   "start_distance_m": 9860.0,
   "end_distance_m": 9870.0,
   "midpoint_distance_m": 9865.0,
   "start_elevation_m": 1117.072525241857,
   "end_elevation_m": 1118.4943696662656,
   "start_xy": [
    810634.4783749476,
    6411208.134214404
   ],
   "end_xy": [
    810625.3840294603,
    6411204.0748163285
   ]
  },
  "max_20m": {
   "gradient_pct": 12.015863031914478,
   "start_distance_m": 8991.0,
   "end_distance_m": 9011.0,
   "midpoint_distance_m": 9001.0,
   "start_elevation_m": 1065.4291081210843,
   "end_elevation_m": 1067.8322807274672,
   "start_xy": [
    811369.0627362491,
    6411475.957675236
   ],
   "end_xy": [
    811349.1003633211,
    6411476.147882545
   ]
  },
  "max_25m": {
   "gradient_pct": 10.475713217477278,
   "start_distance_m": 8997.0,
   "end_distance_m": 9022.0,
   "midpoint_distance_m": 9009.5,
   "start_elevation_m": 1066.075155453037,
   "end_elevation_m": 1068.6940837574064,
   "start_xy": [
    811363.0810533023,
    6411476.426150554
   ],
   "end_xy": [
    811338.139132959,
    6411475.262059318
   ]
  },
  "max_50m": {
   "gradient_pct": 8.4516433067256,
   "start_distance_m": 8972.0,
   "end_distance_m": 9022.0,
   "midpoint_distance_m": 8997.0,
   "start_elevation_m": 1064.4682621040436,
   "end_elevation_m": 1068.6940837574064,
   "start_xy": [
    811388.0047322473,
    6411474.474170061
   ],
   "end_xy": [
    811338.139132959,
    6411475.262059318
   ]
  },
  "max_100m": {
   "gradient_pct": 7.158932343294737,
   "start_distance_m": 8922.0,
   "end_distance_m": 9022.0,
   "midpoint_distance_m": 8972.0,
   "start_elevation_m": 1061.5351514141116,
   "end_elevation_m": 1068.6940837574064,
   "start_xy": [
    811437.8446782344,
    6411471.7996232435
   ],
   "end_xy": [
    811338.139132959,
    6411475.262059318
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -38.41420709815338,
   "start_distance_m": 420.0,
   "end_distance_m": 425.0,
   "midpoint_distance_m": 422.5,
   "start_elevation_m": 655.5527686225219,
   "end_elevation_m": 653.6320582676142,
   "start_xy": [
    816521.5815796168,
    6413659.407632095
   ],
   "end_xy": [
    816522.9143681618,
    6413664.226726894
   ]
  },
  "min_10m": {
   "gradient_pct": -22.596123244334194,
   "start_distance_m": 418.0,
   "end_distance_m": 428.0,
   "midpoint_distance_m": 423.0,
   "start_elevation_m": 655.4844115932588,
   "end_elevation_m": 653.2247992688253,
   "start_xy": [
    816521.0484641988,
    6413657.479994174
   ],
   "end_xy": [
    816523.7140412888,
    6413667.118183775
   ]
  },
  "min_20m": {
   "gradient_pct": -8.490065900473382,
   "start_distance_m": 408.0,
   "end_distance_m": 428.0,
   "midpoint_distance_m": 418.0,
   "start_elevation_m": 654.92281244892,
   "end_elevation_m": 653.2247992688253,
   "start_xy": [
    816517.1657666179,
    6413648.289810288
   ],
   "end_xy": [
    816523.7140412888,
    6413667.118183775
   ]
  },
  "min_25m": {
   "gradient_pct": -5.769392236759813,
   "start_distance_m": 403.0,
   "end_distance_m": 428.0,
   "midpoint_distance_m": 415.5,
   "start_elevation_m": 654.6671473280153,
   "end_elevation_m": 653.2247992688253,
   "start_xy": [
    816515.0561214887,
    6413643.756665967
   ],
   "end_xy": [
    816523.7140412888,
    6413667.118183775
   ]
  },
  "min_50m": {
   "gradient_pct": -0.03924056556479627,
   "start_distance_m": 378.0,
   "end_distance_m": 428.0,
   "midpoint_distance_m": 403.0,
   "start_elevation_m": 653.2444195516077,
   "end_elevation_m": 653.2247992688253,
   "start_xy": [
    816504.6374384699,
    6413621.577341032
   ],
   "end_xy": [
    816523.7140412888,
    6413667.118183775
   ]
  },
  "min_100m": {
   "gradient_pct": 2.57786868705125,
   "start_distance_m": 328.0,
   "end_distance_m": 428.0,
   "midpoint_distance_m": 378.0,
   "start_elevation_m": 650.6469305817741,
   "end_elevation_m": 653.2247992688253,
   "start_xy": [
    816531.6630740365,
    6413582.665428707
   ],
   "end_xy": [
    816523.7140412888,
    6413667.118183775
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 35.44958823157458,
   "start_distance_m": 9019.0,
   "end_distance_m": 9021.0,
   "midpoint_distance_m": 9020.0,
   "start_elevation_m": 1067.746033900743,
   "end_elevation_m": 1068.4550256653745,
   "start_xy": [
    811341.1254075359,
    6411475.548702216
   ],
   "end_xy": [
    811339.134557818,
    6411475.357606951
   ]
  },
  "max_3m": {
   "gradient_pct": 31.601661888779137,
   "start_distance_m": 9019.0,
   "end_distance_m": 9022.0,
   "midpoint_distance_m": 9020.5,
   "start_elevation_m": 1067.746033900743,
   "end_elevation_m": 1068.6940837574064,
   "start_xy": [
    811341.1254075359,
    6411475.548702216
   ],
   "end_xy": [
    811338.139132959,
    6411475.262059318
   ]
  }
 },
 "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": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.005,
   "windows_resited": [
    5.0,
    10.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.006,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 5.0,
     "start_m": 8868.0,
     "end_m": 8873.0,
     "raw_pct": 22.45,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.159,
   "obstruction_max_height_m": 37.76,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    431.0,
    437.0
   ],
   [
    640.0,
    680.0
   ],
   [
    8866.0,
    8875.0
   ]
  ],
  "review": [],
  "extent": []
 },
 "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_E810-N6410_0m5@22LHD5NN-2025-06-04.tif",
   "data/cache/fr/ign-lidarhd_dtm_E810-N6411_0m5@22LHD5NN-2025-06-04.tif",
   "data/cache/fr/ign-lidarhd_dtm_E811-N6411_0m5@22LHD5NN-2025-06-04.tif",
   "data/cache/fr/ign-lidarhd_dtm_E811-N6412_0m5@22LHD5NN-2025-06-04.tif",
   "data/cache/fr/ign-lidarhd_dtm_E812-N6411_0m5@22LHD5NN-2025-06-04.tif",
   "data/cache/fr/ign-lidarhd_dtm_E812-N6412_0m5@22LHD5NN-2025-06-04.tif",
   "data/cache/fr/ign-lidarhd_dtm_E813-N6411_0m5@22LHD5NN-2025-06-04.tif",
   "data/cache/fr/ign-lidarhd_dtm_E813-N6412_0m5@22LHD5NN-2025-06-04.tif",
   "data/cache/fr/ign-lidarhd_dtm_E813-N6413_0m5@22LHD5NN-2025-06-04.tif",
   "data/cache/fr/ign-lidarhd_dtm_E814-N6412_0m5@22LHD5NN-2025-06-04.tif",
   "data/cache/fr/ign-lidarhd_dtm_E814-N6413_0m5@22LHD5NN-2025-06-04.tif",
   "data/cache/fr/ign-lidarhd_dtm_E815-N6413_0m5@22LHD5NN-2025-06-04.tif",
   "data/cache/fr/ign-lidarhd_dtm_E816-N6413_0m5@22LHD5NN-2025-06-04.tif"
  ],
  "calculated_at": "2026-09-22T15:25:20+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": [
   "E810-N6410",
   "E810-N6411",
   "E811-N6411",
   "E811-N6412",
   "E812-N6411",
   "E812-N6412",
   "E813-N6411",
   "E813-N6412",
   "E813-N6413",
   "E814-N6412",
   "E814-N6413",
   "E815-N6413",
   "E816-N6413"
  ],
  "elevation_blocks": [
   "22LHD5NN@2025-06-04"
  ],
  "ign_dalles": [
   "LHD_FXX_0810_6411_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0810_6412_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0811_6412_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0811_6413_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0812_6412_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0812_6413_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0813_6412_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0813_6413_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0813_6414_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0814_6413_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0814_6414_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0815_6414_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0816_6414_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD5NN"
  ],
  "ign_editions": [
   "2025-06-04"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0810_6411_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0810_6412_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0811_6412_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0811_6413_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0812_6412_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0812_6413_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0813_6412_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0813_6413_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0813_6414_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0814_6413_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0814_6414_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0815_6414_MNT_O_0M50_LAMB93_IGN69": "2025-06-04",
   "LHD_FXX_0816_6414_MNT_O_0M50_LAMB93_IGN69": "2025-06-04"
  },
  "climb_origin": "named-pass",
  "structure_own_ways": 3,
  "carriageway": {
   "stations": 423,
   "stations_resolved": 423,
   "width_median_m": 5.5,
   "width_p10_m": 3.5,
   "width_min_m": 1.0,
   "width_max_m": 11.5,
   "bounded_share": 0.511,
   "unbounded_share": 0.489,
   "confidence_median": 0.514,
   "width_median_bounded_m": 5.75,
   "window_m": [
    8997.0,
    9022.0
   ],
   "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": 423,
    "stations_resolved": 423,
    "width_median_m": 6.25,
    "width_p10_m": 1.25,
    "width_min_m": 0.0,
    "width_max_m": 12.0,
    "bounded_share": 0.915,
    "unbounded_share": 0.085,
    "confidence_median": 1.0,
    "width_median_bounded_m": 6.0,
    "window_m": [
     8997.0,
     9022.0
    ],
    "width_at_max25_m": 3.0,
    "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": "Saint-Pierreville",
  "county": "Ard\u00e8che",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}