{
 "ocl_version": "0.1.0",
 "name": "Chemin des Bancaous",
 "slug": "chemin-des-bancaous",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.59943845818202,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 509.0,
   "end_distance_m": 511.0,
   "start_elevation_m": 131.43551670257878,
   "end_elevation_m": 131.92750547174242,
   "min_gradient_pct": -10.474154048534245
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.693239348601953,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 508.0,
   "end_distance_m": 511.0,
   "start_elevation_m": 131.21670829128436,
   "end_elevation_m": 131.92750547174242,
   "min_gradient_pct": -1.253993713243536
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.771244647763353,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 409.0,
   "end_distance_m": 414.0,
   "start_elevation_m": 113.81126749971729,
   "end_elevation_m": 114.94982973210546,
   "min_gradient_pct": 1.6923932484888837
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.377698277808378,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 409.0,
   "end_distance_m": 419.0,
   "start_elevation_m": 113.81126749971729,
   "end_elevation_m": 116.04903732749813,
   "min_gradient_pct": 2.328958388194735
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.822133841508915,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 409.0,
   "end_distance_m": 429.0,
   "start_elevation_m": 113.81126749971729,
   "end_elevation_m": 118.17569426801907,
   "min_gradient_pct": 3.0024740599955635
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.59910297778543,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 405.0,
   "end_distance_m": 430.0,
   "start_elevation_m": 112.96463395799228,
   "end_elevation_m": 118.36440970243864,
   "min_gradient_pct": 3.3158792119418194
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.15189630857958,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 388.0,
   "end_distance_m": 438.0,
   "start_elevation_m": 109.79926208057765,
   "end_elevation_m": 119.87521023486744,
   "min_gradient_pct": 3.436341395898552
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.042659137255697,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 382.0,
   "end_distance_m": 482.0,
   "start_elevation_m": 108.84344464373598,
   "end_elevation_m": 126.88610378099168,
   "min_gradient_pct": 4.3455165006983805
  }
 ],
 "shape": {
  "ascent_concentration": 0.362,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 148.0,
  "shape_class": "sustained"
 },
 "length_m": 577.2403530838808,
 "start_elevation_m": 73.99786398754229,
 "end_elevation_m": 142.25075167845677,
 "endpoint_gain_m": 68.25288769091448,
 "overall_gradient_pct": 11.823997980438559,
 "accumulated_ascent_m": 68.48547857353297,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.771244647763353,
   "start_distance_m": 409.0,
   "end_distance_m": 414.0,
   "midpoint_distance_m": 411.5,
   "start_elevation_m": 113.81126749971729,
   "end_elevation_m": 114.94982973210546,
   "start_xy": [
    927826.5651430393,
    6231203.514917499
   ],
   "end_xy": [
    927826.8677517194,
    6231208.505751898
   ]
  },
  "max_10m": {
   "gradient_pct": 22.377698277808378,
   "start_distance_m": 409.0,
   "end_distance_m": 419.0,
   "midpoint_distance_m": 414.0,
   "start_elevation_m": 113.81126749971729,
   "end_elevation_m": 116.04903732749813,
   "start_xy": [
    927826.5651430393,
    6231203.514917499
   ],
   "end_xy": [
    927826.9238450725,
    6231213.501643256
   ]
  },
  "max_20m": {
   "gradient_pct": 21.822133841508915,
   "start_distance_m": 409.0,
   "end_distance_m": 429.0,
   "midpoint_distance_m": 419.0,
   "start_elevation_m": 113.81126749971729,
   "end_elevation_m": 118.17569426801907,
   "start_xy": [
    927826.5651430393,
    6231203.514917499
   ],
   "end_xy": [
    927826.7284880838,
    6231223.499734856
   ]
  },
  "max_25m": {
   "gradient_pct": 21.59910297778543,
   "start_distance_m": 405.0,
   "end_distance_m": 430.0,
   "midpoint_distance_m": 417.5,
   "start_elevation_m": 112.96463395799228,
   "end_elevation_m": 118.36440970243864,
   "start_xy": [
    927826.3230560954,
    6231199.522249982
   ],
   "end_xy": [
    927826.7089523849,
    6231224.499544016
   ]
  },
  "max_50m": {
   "gradient_pct": 20.15189630857958,
   "start_distance_m": 388.0,
   "end_distance_m": 438.0,
   "midpoint_distance_m": 413.0,
   "start_elevation_m": 109.79926208057765,
   "end_elevation_m": 119.87521023486744,
   "start_xy": [
    927822.1144672811,
    6231183.184562428
   ],
   "end_xy": [
    927825.4151719272,
    6231232.391528449
   ]
  },
  "max_100m": {
   "gradient_pct": 18.042659137255697,
   "start_distance_m": 382.0,
   "end_distance_m": 482.0,
   "midpoint_distance_m": 432.0,
   "start_elevation_m": 108.84344464373598,
   "end_elevation_m": 126.88610378099168,
   "start_xy": [
    927818.757667695,
    6231178.211445042
   ],
   "end_xy": [
    927841.4149425393,
    6231271.676129338
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 1.6923932484888837,
   "start_distance_m": 3.0,
   "end_distance_m": 8.0,
   "midpoint_distance_m": 5.5,
   "start_elevation_m": 74.21171493204676,
   "end_elevation_m": 74.2963345944712,
   "start_xy": [
    927683.4727812755,
    6230846.391517972
   ],
   "end_xy": [
    927684.8290834014,
    6230851.204047924
   ]
  },
  "min_10m": {
   "gradient_pct": 2.328958388194735,
   "start_distance_m": 94.0,
   "end_distance_m": 104.0,
   "midpoint_distance_m": 99.0,
   "start_elevation_m": 78.34451207847084,
   "end_elevation_m": 78.57740791729032,
   "start_xy": [
    927689.4552712621,
    6230935.436614487
   ],
   "end_xy": [
    927693.0866975735,
    6230941.78773757
   ]
  },
  "min_20m": {
   "gradient_pct": 3.0024740599955635,
   "start_distance_m": 86.0,
   "end_distance_m": 106.0,
   "midpoint_distance_m": 96.0,
   "start_elevation_m": 78.0349665576593,
   "end_elevation_m": 78.63546136965842,
   "start_xy": [
    927691.2042283106,
    6230927.630133254
   ],
   "end_xy": [
    927695.002714003,
    6230942.36121908
   ]
  },
  "min_25m": {
   "gradient_pct": 3.3158792119418194,
   "start_distance_m": 81.0,
   "end_distance_m": 106.0,
   "midpoint_distance_m": 93.5,
   "start_elevation_m": 77.80649156667296,
   "end_elevation_m": 78.63546136965842,
   "start_xy": [
    927692.297326466,
    6230922.751082484
   ],
   "end_xy": [
    927695.002714003,
    6230942.36121908
   ]
  },
  "min_50m": {
   "gradient_pct": 3.436341395898552,
   "start_distance_m": 56.0,
   "end_distance_m": 106.0,
   "midpoint_distance_m": 81.0,
   "start_elevation_m": 76.91729067170914,
   "end_elevation_m": 78.63546136965842,
   "start_xy": [
    927694.1262331571,
    6230897.885692891
   ],
   "end_xy": [
    927695.002714003,
    6230942.36121908
   ]
  },
  "min_100m": {
   "gradient_pct": 4.3455165006983805,
   "start_distance_m": 3.0,
   "end_distance_m": 103.0,
   "midpoint_distance_m": 53.0,
   "start_elevation_m": 74.21171493204676,
   "end_elevation_m": 78.55723143274514,
   "start_xy": [
    927683.4727812755,
    6230846.391517972
   ],
   "end_xy": [
    927692.1286893588,
    6230941.500996815
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.59943845818202,
   "start_distance_m": 509.0,
   "end_distance_m": 511.0,
   "midpoint_distance_m": 510.0,
   "start_elevation_m": 131.43551670257878,
   "end_elevation_m": 131.92750547174242,
   "start_xy": [
    927865.6099505796,
    6231278.557803233
   ],
   "end_xy": [
    927867.5905750258,
    6231278.280086105
   ]
  },
  "max_3m": {
   "gradient_pct": 23.693239348601953,
   "start_distance_m": 508.0,
   "end_distance_m": 511.0,
   "midpoint_distance_m": 509.5,
   "start_elevation_m": 131.21670829128436,
   "end_elevation_m": 131.92750547174242,
   "start_xy": [
    927864.6196383565,
    6231278.696661797
   ],
   "end_xy": [
    927867.5905750258,
    6231278.280086105
   ]
  }
 },
 "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": 0.287,
   "obstruction_max_height_m": 18.62,
   "flagged_windows_m": [
    2,
    10,
    20,
    25
   ]
  },
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "41205ec4649bb0a4093af76ff34281a5d9a13832",
   "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-pr5",
   "road_pbf": "block-batch-fr-pr5.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:ba95a0bf562c86eb"
  },
  "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_E927-N6230_0m5@21LHD7PQ-2025-03-14.tif",
   "data/cache/fr/ign-lidarhd_dtm_E927-N6231_0m5@21LHD7PQ-2025-03-14.tif"
  ],
  "calculated_at": "2026-09-25T09:00:34+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pr5.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pr5",
  "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": [
   "E927-N6230",
   "E927-N6231"
  ],
  "elevation_blocks": [
   "21LHD7PQ@2025-03-14"
  ],
  "ign_dalles": [
   "LHD_FXX_0927_6231_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0927_6232_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD7PQ"
  ],
  "ign_editions": [
   "2025-03-14"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0927_6231_MNT_O_0M50_LAMB93_IGN69": "2025-03-14",
   "LHD_FXX_0927_6232_MNT_O_0M50_LAMB93_IGN69": "2025-03-14"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 2,
  "carriageway": {
   "stations": 29,
   "stations_resolved": 29,
   "width_median_m": 4.75,
   "width_p10_m": 2.45,
   "width_min_m": 2.25,
   "width_max_m": 12.0,
   "bounded_share": 0.172,
   "unbounded_share": 0.828,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.5,
   "window_m": [
    405.0,
    430.0
   ],
   "width_at_max25_m": 2.5,
   "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": 29,
    "stations_resolved": 29,
    "width_median_m": 4.0,
    "width_p10_m": 1.2,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.69,
    "unbounded_share": 0.31,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.0,
    "window_m": [
     405.0,
     430.0
    ],
    "width_at_max25_m": 5.12,
    "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": "Sanary-sur-Mer",
  "county": "Var",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}