{
 "ocl_version": "0.1.0",
 "name": "Chemin du Biot",
 "slug": "chemin-du-biot",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 26.42032191455428,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 322.0,
   "end_distance_m": 324.0,
   "start_elevation_m": 486.92537165054296,
   "end_elevation_m": 487.45377808883404,
   "min_gradient_pct": -11.99024820981549
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.52812188927002,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 317.0,
   "end_distance_m": 320.0,
   "start_elevation_m": 485.6817272277114,
   "end_elevation_m": 486.4475708843895,
   "min_gradient_pct": -11.450755444692126
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.451069847947565,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 313.0,
   "end_distance_m": 318.0,
   "start_elevation_m": 484.6700733154529,
   "end_elevation_m": 485.9426268078503,
   "min_gradient_pct": -9.99651836200428
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.35178819508758,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 313.0,
   "end_distance_m": 323.0,
   "start_elevation_m": 484.6700733154529,
   "end_elevation_m": 487.20525213496165,
   "min_gradient_pct": -8.837474702503414
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.878678496538953,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 313.0,
   "end_distance_m": 333.0,
   "start_elevation_m": 484.6700733154529,
   "end_elevation_m": 489.6458090147607,
   "min_gradient_pct": -7.819953089659748
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.698220206718588,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 309.0,
   "end_distance_m": 334.0,
   "start_elevation_m": 483.7023394441409,
   "end_elevation_m": 489.8768944958205,
   "min_gradient_pct": -6.976883745535815
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.70283764408157,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 295.0,
   "end_distance_m": 345.0,
   "start_elevation_m": 480.5658463175533,
   "end_elevation_m": 492.41726513959406,
   "min_gradient_pct": -3.0509282247003284
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.993388102624696,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 268.0,
   "end_distance_m": 368.0,
   "start_elevation_m": 475.80838080383,
   "end_elevation_m": 496.8017689064547,
   "min_gradient_pct": 0.8103880405288919
  }
 ],
 "shape": {
  "ascent_concentration": 0.437,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 185.0,
  "shape_class": "sustained"
 },
 "length_m": 793.8182346668797,
 "start_elevation_m": 445.17726584472933,
 "end_elevation_m": 520.5430395254085,
 "endpoint_gain_m": 75.36577368067918,
 "overall_gradient_pct": 9.494084462837504,
 "accumulated_ascent_m": 77.24858491461748,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.451069847947565,
   "start_distance_m": 313.0,
   "end_distance_m": 318.0,
   "midpoint_distance_m": 315.5,
   "start_elevation_m": 484.6700733154529,
   "end_elevation_m": 485.9426268078503,
   "start_xy": [
    798730.0435157546,
    6559421.256986022
   ],
   "end_xy": [
    798733.76139865,
    6559417.914022085
   ]
  },
  "max_10m": {
   "gradient_pct": 25.35178819508758,
   "start_distance_m": 313.0,
   "end_distance_m": 323.0,
   "midpoint_distance_m": 318.0,
   "start_elevation_m": 484.6700733154529,
   "end_elevation_m": 487.20525213496165,
   "start_xy": [
    798730.0435157546,
    6559421.256986022
   ],
   "end_xy": [
    798737.6849904924,
    6559414.814759745
   ]
  },
  "max_20m": {
   "gradient_pct": 24.878678496538953,
   "start_distance_m": 313.0,
   "end_distance_m": 333.0,
   "midpoint_distance_m": 323.0,
   "start_elevation_m": 484.6700733154529,
   "end_elevation_m": 489.6458090147607,
   "start_xy": [
    798730.0435157546,
    6559421.256986022
   ],
   "end_xy": [
    798745.5321741772,
    6559408.616235064
   ]
  },
  "max_25m": {
   "gradient_pct": 24.698220206718588,
   "start_distance_m": 309.0,
   "end_distance_m": 334.0,
   "midpoint_distance_m": 321.5,
   "start_elevation_m": 483.7023394441409,
   "end_elevation_m": 489.8768944958205,
   "start_xy": [
    798727.1671043055,
    6559424.035237701
   ],
   "end_xy": [
    798746.3168925457,
    6559407.996382597
   ]
  },
  "max_50m": {
   "gradient_pct": 23.70283764408157,
   "start_distance_m": 295.0,
   "end_distance_m": 345.0,
   "midpoint_distance_m": 320.0,
   "start_elevation_m": 480.5658463175533,
   "end_elevation_m": 492.41726513959406,
   "start_xy": [
    798718.0561341315,
    6559434.619872654
   ],
   "end_xy": [
    798754.948794599,
    6559401.178005448
   ]
  },
  "max_100m": {
   "gradient_pct": 20.993388102624696,
   "start_distance_m": 268.0,
   "end_distance_m": 368.0,
   "midpoint_distance_m": 318.0,
   "start_elevation_m": 475.80838080383,
   "end_elevation_m": 496.8017689064547,
   "start_xy": [
    798702.9026777789,
    6559456.946227527
   ],
   "end_xy": [
    798772.9973170741,
    6559386.9213986825
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -9.99651836200428,
   "start_distance_m": 786.0,
   "end_distance_m": 791.0,
   "midpoint_distance_m": 788.5,
   "start_elevation_m": 521.0630681156679,
   "end_elevation_m": 520.5632421975677,
   "start_xy": [
    798901.1060797472,
    6558994.726573853
   ],
   "end_xy": [
    798901.2787019978,
    6558989.729554586
   ]
  },
  "min_10m": {
   "gradient_pct": -8.837474702503414,
   "start_distance_m": 781.0,
   "end_distance_m": 791.0,
   "midpoint_distance_m": 786.0,
   "start_elevation_m": 521.446989667818,
   "end_elevation_m": 520.5632421975677,
   "start_xy": [
    798900.147754791,
    6558999.616919917
   ],
   "end_xy": [
    798901.2787019978,
    6558989.729554586
   ]
  },
  "min_20m": {
   "gradient_pct": -7.819953089659748,
   "start_distance_m": 771.0,
   "end_distance_m": 791.0,
   "midpoint_distance_m": 781.0,
   "start_elevation_m": 522.1272328154996,
   "end_elevation_m": 520.5632421975677,
   "start_xy": [
    798897.8158795192,
    6559009.34123777
   ],
   "end_xy": [
    798901.2787019978,
    6558989.729554586
   ]
  },
  "min_25m": {
   "gradient_pct": -6.976883745535815,
   "start_distance_m": 767.0,
   "end_distance_m": 792.0,
   "midpoint_distance_m": 779.5,
   "start_elevation_m": 522.2717405572632,
   "end_elevation_m": 520.5275196208793,
   "start_xy": [
    798896.9016244211,
    6559013.235100659
   ],
   "end_xy": [
    798901.3132264479,
    6558988.730150732
   ]
  },
  "min_50m": {
   "gradient_pct": -3.0509282247003284,
   "start_distance_m": 743.0,
   "end_distance_m": 793.0,
   "midpoint_distance_m": 768.0,
   "start_elevation_m": 522.0525500606764,
   "end_elevation_m": 520.5270859483262,
   "start_xy": [
    798892.6593400137,
    6559036.848911961
   ],
   "end_xy": [
    798901.3477508981,
    6558987.730746879
   ]
  },
  "min_100m": {
   "gradient_pct": 0.8103880405288919,
   "start_distance_m": 693.0,
   "end_distance_m": 793.0,
   "midpoint_distance_m": 743.0,
   "start_elevation_m": 519.7166979077973,
   "end_elevation_m": 520.5270859483262,
   "start_xy": [
    798882.1157562848,
    6559085.621476097
   ],
   "end_xy": [
    798901.3477508981,
    6558987.730746879
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 26.42032191455428,
   "start_distance_m": 322.0,
   "end_distance_m": 324.0,
   "midpoint_distance_m": 323.0,
   "start_elevation_m": 486.92537165054296,
   "end_elevation_m": 487.45377808883404,
   "start_xy": [
    798736.900272124,
    6559415.434612214
   ],
   "end_xy": [
    798738.4697088609,
    6559414.194907277
   ]
  },
  "max_3m": {
   "gradient_pct": 25.52812188927002,
   "start_distance_m": 317.0,
   "end_distance_m": 320.0,
   "midpoint_distance_m": 318.5,
   "start_elevation_m": 485.6817272277114,
   "end_elevation_m": 486.4475708843895,
   "start_xy": [
    798733.0146848239,
    6559418.578898204
   ],
   "end_xy": [
    798735.330835387,
    6559416.674317149
   ]
  }
 },
 "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": 0.17,
   "obstruction_max_height_m": 15.68,
   "flagged_windows_m": [
    3,
    5,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "descends_at_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_E798-N6558_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E798-N6559_0m5@21LHD5NK-2025-02-20.tif"
  ],
  "calculated_at": "2026-09-22T14:30:34+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": [
   "E798-N6558",
   "E798-N6559"
  ],
  "elevation_blocks": [
   "21LHD5NK@2025-02-20"
  ],
  "ign_dalles": [
   "LHD_FXX_0798_6559_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0798_6560_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD5NK"
  ],
  "ign_editions": [
   "2025-02-20"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0798_6559_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0798_6560_MNT_O_0M50_LAMB93_IGN69": "2025-02-20"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 38,
   "stations_resolved": 38,
   "width_median_m": 4.5,
   "width_p10_m": 2.75,
   "width_min_m": 2.5,
   "width_max_m": 12.0,
   "bounded_share": 0.026,
   "unbounded_share": 0.974,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.75,
   "window_m": [
    309.0,
    334.0
   ],
   "width_at_max25_m": 5.0,
   "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": 38,
    "stations_resolved": 38,
    "width_median_m": 5.0,
    "width_p10_m": 2.1,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.658,
    "unbounded_share": 0.342,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.25,
    "window_m": [
     309.0,
     334.0
    ],
    "width_at_max25_m": 2.75,
    "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": "Cuinzier",
  "county": "Loire",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}