{
 "ocl_version": "0.1.0",
 "name": "Route des Grottes",
 "slug": "route-des-grottes-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 36.864264195395435,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1096.0,
   "end_distance_m": 1098.0,
   "start_elevation_m": 259.14689465336596,
   "end_elevation_m": 259.88417993727387,
   "min_gradient_pct": -47.00715003049538,
   "suppressed_max_gradient_pct": 67.58655287732722,
   "suppressed_location_m": [
    1282.0,
    1284.0
   ],
   "suppressed_min_gradient_pct": -74.44282173248666,
   "suppressed_min_location_m": [
    1290.0,
    1292.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 33.827060566617696,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1095.0,
   "end_distance_m": 1098.0,
   "start_elevation_m": 258.86936812027534,
   "end_elevation_m": 259.88417993727387,
   "min_gradient_pct": -36.18481653072081,
   "suppressed_max_gradient_pct": 52.24285802970409,
   "suppressed_location_m": [
    1282.0,
    1285.0
   ],
   "suppressed_min_gradient_pct": -64.6039934282328,
   "suppressed_min_location_m": [
    1289.0,
    1292.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.05886624479467,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded"
   ],
   "start_distance_m": 783.0,
   "end_distance_m": 788.0,
   "start_elevation_m": 215.0728567237854,
   "end_elevation_m": 216.37580003602514,
   "min_gradient_pct": -25.39268434188216,
   "suppressed_max_gradient_pct": 42.33712587364835,
   "suppressed_location_m": [
    1283.0,
    1288.0
   ],
   "suppressed_min_gradient_pct": -43.84531491988241,
   "suppressed_min_location_m": [
    1289.0,
    1294.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.277339206956924,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 1074.0,
   "end_distance_m": 1084.0,
   "start_elevation_m": 255.3406066847335,
   "end_elevation_m": 257.6683406054292,
   "min_gradient_pct": -12.319055610539067,
   "suppressed_max_gradient_pct": 25.743518893019086,
   "suppressed_location_m": [
    1279.0,
    1289.0
   ],
   "suppressed_min_gradient_pct": -18.7949664775266,
   "suppressed_min_location_m": [
    1289.0,
    1299.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 19.48266740632903,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1064.0,
   "end_distance_m": 1084.0,
   "start_elevation_m": 253.7718071241634,
   "end_elevation_m": 257.6683406054292,
   "min_gradient_pct": -7.976096938899104
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.0273821434987,
   "diagnostic": false,
   "flags": [
    "suppression_unstable",
    "canopy_or_structure"
   ],
   "start_distance_m": 1060.0,
   "end_distance_m": 1085.0,
   "start_elevation_m": 252.8902427941738,
   "end_elevation_m": 257.89708833004846,
   "min_gradient_pct": -7.803131662652959
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.523727787725647,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1128.0,
   "end_distance_m": 1178.0,
   "start_elevation_m": 262.5578311603772,
   "end_elevation_m": 271.31969505424,
   "min_gradient_pct": -6.711578644860083
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.093308240380566,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1122.0,
   "end_distance_m": 1222.0,
   "start_elevation_m": 261.6246732303774,
   "end_elevation_m": 277.717981470758,
   "min_gradient_pct": -3.947909188177505
  }
 ],
 "shape": {
  "ascent_concentration": 0.414,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 190.0,
  "shape_class": "sustained"
 },
 "length_m": 3530.6019804726798,
 "start_elevation_m": 179.09023793199867,
 "end_elevation_m": 430.277336049194,
 "endpoint_gain_m": 251.18709811719532,
 "overall_gradient_pct": 7.1145685496830255,
 "accumulated_ascent_m": 268.75134240065915,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.05886624479467,
   "start_distance_m": 783.0,
   "end_distance_m": 788.0,
   "midpoint_distance_m": 785.5,
   "start_elevation_m": 215.0728567237854,
   "end_elevation_m": 216.37580003602514,
   "start_xy": [
    776307.3137062144,
    6333761.466195773
   ],
   "end_xy": [
    776307.0535605196,
    6333766.459423609
   ]
  },
  "max_10m": {
   "gradient_pct": 23.277339206956924,
   "start_distance_m": 1074.0,
   "end_distance_m": 1084.0,
   "midpoint_distance_m": 1079.0,
   "start_elevation_m": 255.3406066847335,
   "end_elevation_m": 257.6683406054292,
   "start_xy": [
    776416.6649691197,
    6334010.341603843
   ],
   "end_xy": [
    776425.4911095692,
    6334015.042587225
   ]
  },
  "max_20m": {
   "gradient_pct": 19.48266740632903,
   "start_distance_m": 1064.0,
   "end_distance_m": 1084.0,
   "midpoint_distance_m": 1074.0,
   "start_elevation_m": 253.7718071241634,
   "end_elevation_m": 257.6683406054292,
   "start_xy": [
    776407.8388286702,
    6334005.64062046
   ],
   "end_xy": [
    776425.4911095692,
    6334015.042587225
   ]
  },
  "max_25m": {
   "gradient_pct": 20.0273821434987,
   "start_distance_m": 1060.0,
   "end_distance_m": 1085.0,
   "midpoint_distance_m": 1072.5,
   "start_elevation_m": 252.8902427941738,
   "end_elevation_m": 257.89708833004846,
   "start_xy": [
    776404.3083724903,
    6334003.7602271065
   ],
   "end_xy": [
    776426.3737236143,
    6334015.512685563
   ]
  },
  "max_50m": {
   "gradient_pct": 17.523727787725647,
   "start_distance_m": 1128.0,
   "end_distance_m": 1178.0,
   "midpoint_distance_m": 1153.0,
   "start_elevation_m": 262.5578311603772,
   "end_elevation_m": 271.31969505424,
   "start_xy": [
    776464.3261275472,
    6334035.72691411
   ],
   "end_xy": [
    776509.3050034315,
    6334057.476463729
   ]
  },
  "max_100m": {
   "gradient_pct": 16.093308240380566,
   "start_distance_m": 1122.0,
   "end_distance_m": 1222.0,
   "midpoint_distance_m": 1172.0,
   "start_elevation_m": 261.6246732303774,
   "end_elevation_m": 277.717981470758,
   "start_xy": [
    776459.0304432774,
    6334032.90632408
   ],
   "end_xy": [
    776549.6440209718,
    6334075.048135928
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -25.39268434188216,
   "start_distance_m": 2849.0,
   "end_distance_m": 2854.0,
   "midpoint_distance_m": 2851.5,
   "start_elevation_m": 398.8075660770688,
   "end_elevation_m": 397.5379318599747,
   "start_xy": [
    776799.9240489521,
    6334521.556431933
   ],
   "end_xy": [
    776802.9746283969,
    6334525.517992869
   ]
  },
  "min_10m": {
   "gradient_pct": -12.319055610539067,
   "start_distance_m": 2845.0,
   "end_distance_m": 2855.0,
   "midpoint_distance_m": 2850.0,
   "start_elevation_m": 398.7713181817364,
   "end_elevation_m": 397.53941262068247,
   "start_xy": [
    776797.4835853962,
    6334518.387183184
   ],
   "end_xy": [
    776803.5847442859,
    6334526.310305056
   ]
  },
  "min_20m": {
   "gradient_pct": -7.976096938899104,
   "start_distance_m": 2274.0,
   "end_distance_m": 2294.0,
   "midpoint_distance_m": 2284.0,
   "start_elevation_m": 361.9829287714572,
   "end_elevation_m": 360.38770938367736,
   "start_xy": [
    776998.8159662929,
    6334131.210765524
   ],
   "end_xy": [
    776979.6411284269,
    6334136.89632555
   ]
  },
  "min_25m": {
   "gradient_pct": -7.803131662652959,
   "start_distance_m": 2275.0,
   "end_distance_m": 2300.0,
   "midpoint_distance_m": 2287.5,
   "start_elevation_m": 361.9037796355385,
   "end_elevation_m": 359.9529967198753,
   "start_xy": [
    776997.8572243996,
    6334131.4950435255
   ],
   "end_xy": [
    776973.8886770671,
    6334138.601993558
   ]
  },
  "min_50m": {
   "gradient_pct": -6.711578644860083,
   "start_distance_m": 2268.0,
   "end_distance_m": 2318.0,
   "midpoint_distance_m": 2293.0,
   "start_elevation_m": 362.237176185087,
   "end_elevation_m": 358.88138686265694,
   "start_xy": [
    777004.0947867393,
    6334128.505956129
   ],
   "end_xy": [
    776956.6313229877,
    6334143.718997582
   ]
  },
  "min_100m": {
   "gradient_pct": -3.947909188177505,
   "start_distance_m": 2221.0,
   "end_distance_m": 2321.0,
   "midpoint_distance_m": 2271.0,
   "start_elevation_m": 362.8111466334899,
   "end_elevation_m": 358.8632374453124,
   "start_xy": [
    777042.6198969966,
    6334101.677891604
   ],
   "end_xy": [
    776953.784059613,
    6334144.63302973
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 36.864264195395435,
   "start_distance_m": 1096.0,
   "end_distance_m": 1098.0,
   "midpoint_distance_m": 1097.0,
   "start_elevation_m": 259.14689465336596,
   "end_elevation_m": 259.88417993727387,
   "start_xy": [
    776436.0824781087,
    6334020.683767284
   ],
   "end_xy": [
    776437.8477061986,
    6334021.623963961
   ]
  },
  "max_3m": {
   "gradient_pct": 33.827060566617696,
   "start_distance_m": 1095.0,
   "end_distance_m": 1098.0,
   "midpoint_distance_m": 1096.5,
   "start_elevation_m": 258.86936812027534,
   "end_elevation_m": 259.88417993727387,
   "start_xy": [
    776435.1998640638,
    6334020.213668946
   ],
   "end_xy": [
    776437.8477061986,
    6334021.623963961
   ]
  }
 },
 "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": 0.004,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "minima_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.007,
   "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": 1817.0,
     "end_m": 1822.0,
     "raw_pct": 31.41,
     "reason": "hump+short-step"
    }
   ],
   "advisory": [],
   "unresolved": [],
   "unstable": [
    {
     "window_m": 25.0,
     "start_m": 1060.0,
     "end_m": 1085.0,
     "raw_pct": 20.03,
     "reason": "hump",
     "perturbations": [
      "phase+0.000/mask+0",
      "phase+0.333/mask+1",
      "phase+0.667/mask-1"
     ],
     "perturbation_reasons": [
      "hump",
      "",
      ""
     ]
    }
   ]
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.242,
   "obstruction_max_height_m": 13.43,
   "flagged_windows_m": [
    2,
    3,
    10,
    20,
    25.0,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    1281.0,
    1286.0
   ],
   [
    1288.0,
    1294.0
   ],
   [
    1815.0,
    1824.0
   ]
  ],
  "review": [],
  "extent": [
   "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-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_E776-N6333_0m5@21LHD4MO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E776-N6334_0m5@21LHD4MO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E777-N6333_0m5@21LHD4MO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E777-N6334_0m5@21LHD4MO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E777-N6335_0m5@21LHD4MO-2024-12-13.tif"
  ],
  "calculated_at": "2026-09-22T18:30:23+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": [
   "E776-N6333",
   "E776-N6334",
   "E777-N6333",
   "E777-N6334",
   "E777-N6335"
  ],
  "elevation_blocks": [
   "21LHD4MO@2024-12-13"
  ],
  "ign_dalles": [
   "LHD_FXX_0776_6334_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0776_6335_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0777_6334_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0777_6335_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0777_6336_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD4MO"
  ],
  "ign_editions": [
   "2024-12-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0776_6334_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0776_6335_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0777_6334_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0777_6335_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0777_6336_MNT_O_0M50_LAMB93_IGN69": "2024-12-13"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 5,
  "suppression_unstable_alternative": {
   "window_m": 25.0,
   "measured_pct": 20.03,
   "measured_at_m": 1060.0,
   "alternative_pct": 19.17,
   "alternative_at_m": 1130.0,
   "delta_pp": 0.86,
   "reason": "hump",
   "perturbation_hits": 1,
   "perturbations": 3
  },
  "suppression_unstable": [
   25.0
  ],
  "carriageway": {
   "stations": 147,
   "stations_resolved": 147,
   "width_median_m": 4.5,
   "width_p10_m": 2.0,
   "width_min_m": 1.0,
   "width_max_m": 12.0,
   "bounded_share": 0.388,
   "unbounded_share": 0.612,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.0,
   "window_m": [
    1060.0,
    1085.0
   ],
   "width_at_max25_m": 1.88,
   "window_stations": 6,
   "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": 147,
    "stations_resolved": 147,
    "width_median_m": 4.0,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.905,
    "unbounded_share": 0.095,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.5,
    "window_m": [
     1060.0,
     1085.0
    ],
    "width_at_max25_m": 2.25,
    "window_stations": 6,
    "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": "Mialet",
  "county": "Gard",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}