{
 "ocl_version": "0.1.0",
 "name": "Chemin de la No\u00ebtte",
 "slug": "chemin-de-la-noette",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.894383012122148,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 199.0,
   "end_distance_m": 201.0,
   "start_elevation_m": 133.7758331252606,
   "end_elevation_m": 134.33372078550303,
   "min_gradient_pct": 4.453032848977756
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.14632753015466,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 199.0,
   "end_distance_m": 202.0,
   "start_elevation_m": 133.7758331252606,
   "end_elevation_m": 134.56022295116523,
   "min_gradient_pct": 4.784469991725378
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.90007576882374,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 307.0,
   "end_distance_m": 312.0,
   "start_elevation_m": 150.30790992952575,
   "end_elevation_m": 151.45291371796694,
   "min_gradient_pct": 4.994769204616887
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.465130719187187,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 470.0,
   "end_distance_m": 480.0,
   "start_elevation_m": 176.58714988656396,
   "end_elevation_m": 178.73366295848268,
   "min_gradient_pct": 5.669838319587939
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.143232037131185,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 461.0,
   "end_distance_m": 481.0,
   "start_elevation_m": 174.8769590060828,
   "end_elevation_m": 178.90560541350905,
   "min_gradient_pct": 6.275260773214626
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.26037794822207,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 455.0,
   "end_distance_m": 480.0,
   "start_elevation_m": 173.66856847142716,
   "end_elevation_m": 178.73366295848268,
   "min_gradient_pct": 6.454983471699222
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.32874711124083,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 431.0,
   "end_distance_m": 481.0,
   "start_elevation_m": 169.24123185788864,
   "end_elevation_m": 178.90560541350905,
   "min_gradient_pct": 7.161969227182539
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.214975207027663,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 380.0,
   "end_distance_m": 480.0,
   "start_elevation_m": 161.51868775145502,
   "end_elevation_m": 178.73366295848268,
   "min_gradient_pct": 8.471650883587216
  }
 ],
 "shape": {
  "ascent_concentration": 0.313,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 308.0,
  "shape_class": "sustained"
 },
 "length_m": 487.0878236302793,
 "start_elevation_m": 113.1907361480508,
 "end_elevation_m": 179.5622740447693,
 "endpoint_gain_m": 66.37153789671851,
 "overall_gradient_pct": 13.626195252028591,
 "accumulated_ascent_m": 66.37861235503826,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.90007576882374,
   "start_distance_m": 307.0,
   "end_distance_m": 312.0,
   "midpoint_distance_m": 309.5,
   "start_elevation_m": 150.30790992952575,
   "end_elevation_m": 151.45291371796694,
   "start_xy": [
    816744.3941023721,
    6345286.681633449
   ],
   "end_xy": [
    816740.8377877016,
    6345283.167115619
   ]
  },
  "max_10m": {
   "gradient_pct": 21.465130719187187,
   "start_distance_m": 470.0,
   "end_distance_m": 480.0,
   "midpoint_distance_m": 475.0,
   "start_elevation_m": 176.58714988656396,
   "end_elevation_m": 178.73366295848268,
   "start_xy": [
    816630.3290391113,
    6345170.5080286795
   ],
   "end_xy": [
    816623.623656753,
    6345163.089278959
   ]
  },
  "max_20m": {
   "gradient_pct": 20.143232037131185,
   "start_distance_m": 461.0,
   "end_distance_m": 481.0,
   "midpoint_distance_m": 471.0,
   "start_elevation_m": 174.8769590060828,
   "end_elevation_m": 178.90560541350905,
   "start_xy": [
    816636.3638832337,
    6345177.184903429
   ],
   "end_xy": [
    816622.9531185172,
    6345162.347403986
   ]
  },
  "max_25m": {
   "gradient_pct": 20.26037794822207,
   "start_distance_m": 455.0,
   "end_distance_m": 480.0,
   "midpoint_distance_m": 467.5,
   "start_elevation_m": 173.66856847142716,
   "end_elevation_m": 178.73366295848268,
   "start_xy": [
    816640.5635475657,
    6345181.4602943715
   ],
   "end_xy": [
    816623.623656753,
    6345163.089278959
   ]
  },
  "max_50m": {
   "gradient_pct": 19.32874711124083,
   "start_distance_m": 431.0,
   "end_distance_m": 481.0,
   "midpoint_distance_m": 456.0,
   "start_elevation_m": 169.24123185788864,
   "end_elevation_m": 178.90560541350905,
   "start_xy": [
    816658.3158256387,
    6345197.611350783
   ],
   "end_xy": [
    816622.9531185172,
    6345162.347403986
   ]
  },
  "max_100m": {
   "gradient_pct": 17.214975207027663,
   "start_distance_m": 380.0,
   "end_distance_m": 480.0,
   "midpoint_distance_m": 430.0,
   "start_elevation_m": 161.51868775145502,
   "end_elevation_m": 178.73366295848268,
   "start_xy": [
    816693.6332857145,
    6345234.27345236
   ],
   "end_xy": [
    816623.623656753,
    6345163.089278959
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 4.994769204616887,
   "start_distance_m": 134.0,
   "end_distance_m": 139.0,
   "midpoint_distance_m": 136.5,
   "start_elevation_m": 127.52060053239208,
   "end_elevation_m": 127.77033899262292,
   "start_xy": [
    816867.5407562876,
    6345406.159300508
   ],
   "end_xy": [
    816864.7877573766,
    6345401.985453722
   ]
  },
  "min_10m": {
   "gradient_pct": 5.669838319587939,
   "start_distance_m": 129.0,
   "end_distance_m": 139.0,
   "midpoint_distance_m": 134.0,
   "start_elevation_m": 127.20335516066413,
   "end_elevation_m": 127.77033899262292,
   "start_xy": [
    816870.2937551987,
    6345410.333147295
   ],
   "end_xy": [
    816864.7877573766,
    6345401.985453722
   ]
  },
  "min_20m": {
   "gradient_pct": 6.275260773214626,
   "start_distance_m": 128.0,
   "end_distance_m": 148.0,
   "midpoint_distance_m": 138.0,
   "start_elevation_m": 127.16012432714902,
   "end_elevation_m": 128.41517648179195,
   "start_xy": [
    816870.844354981,
    6345411.167916652
   ],
   "end_xy": [
    816859.8323593365,
    6345394.472529506
   ]
  },
  "min_25m": {
   "gradient_pct": 6.454983471699222,
   "start_distance_m": 123.0,
   "end_distance_m": 148.0,
   "midpoint_distance_m": 135.5,
   "start_elevation_m": 126.80143061386714,
   "end_elevation_m": 128.41517648179195,
   "start_xy": [
    816874.0778130899,
    6345414.942733301
   ],
   "end_xy": [
    816859.8323593365,
    6345394.472529506
   ]
  },
  "min_50m": {
   "gradient_pct": 7.161969227182539,
   "start_distance_m": 116.0,
   "end_distance_m": 166.0,
   "midpoint_distance_m": 141.0,
   "start_elevation_m": 126.1616527440333,
   "end_elevation_m": 129.74263735762457,
   "start_xy": [
    816879.1142380837,
    6345419.80425809
   ],
   "end_xy": [
    816848.8679267594,
    6345380.216299972
   ]
  },
  "min_100m": {
   "gradient_pct": 8.471650883587216,
   "start_distance_m": 86.0,
   "end_distance_m": 186.0,
   "midpoint_distance_m": 136.0,
   "start_elevation_m": 123.2532174368055,
   "end_elevation_m": 131.72486832039272,
   "start_xy": [
    816900.8435017786,
    6345440.360515375
   ],
   "end_xy": [
    816836.1613191173,
    6345364.771529641
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.894383012122148,
   "start_distance_m": 199.0,
   "end_distance_m": 201.0,
   "midpoint_distance_m": 200.0,
   "start_elevation_m": 133.7758331252606,
   "end_elevation_m": 134.33372078550303,
   "start_xy": [
    816826.9736735475,
    6345355.681014287
   ],
   "end_xy": [
    816825.3974588403,
    6345354.449938661
   ]
  },
  "max_3m": {
   "gradient_pct": 26.14632753015466,
   "start_distance_m": 199.0,
   "end_distance_m": 202.0,
   "midpoint_distance_m": 200.5,
   "start_elevation_m": 133.7758331252606,
   "end_elevation_m": 134.56022295116523,
   "start_xy": [
    816826.9736735475,
    6345355.681014287
   ],
   "end_xy": [
    816824.6093514867,
    6345353.8344008485
   ]
  }
 },
 "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": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.346,
   "obstruction_max_height_m": 19.92,
   "flagged_windows_m": [
    5,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier",
   "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_E816-N6345_0m5@22LHD5NO-2025-04-22.tif"
  ],
  "calculated_at": "2026-09-22T15:03:05+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": [
   "E816-N6345"
  ],
  "elevation_blocks": [
   "22LHD5NO@2025-04-22"
  ],
  "ign_dalles": [
   "LHD_FXX_0816_6346_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD5NO"
  ],
  "ign_editions": [
   "2025-04-22"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0816_6346_MNT_O_0M50_LAMB93_IGN69": "2025-04-22"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 25,
   "stations_resolved": 25,
   "width_median_m": 3.75,
   "width_p10_m": 3.1,
   "width_min_m": 1.0,
   "width_max_m": 8.0,
   "bounded_share": 0.36,
   "unbounded_share": 0.64,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.25,
   "window_m": [
    455.0,
    480.0
   ],
   "width_at_max25_m": 3.75,
   "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": 25,
    "stations_resolved": 25,
    "width_median_m": 2.75,
    "width_p10_m": 1.35,
    "width_min_m": 0.5,
    "width_max_m": 8.25,
    "bounded_share": 1.0,
    "unbounded_share": 0.0,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.75,
    "window_m": [
     455.0,
     480.0
    ],
    "width_at_max25_m": 2.62,
    "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": "Goudargues",
  "county": "Gard",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}