{
 "ocl_version": "0.1.0",
 "name": "Route de chez le Duc",
 "slug": "route-de-chez-le-duc",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.92365629884432,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 872.0,
   "end_distance_m": 874.0,
   "start_elevation_m": 426.4089532202512,
   "end_elevation_m": 426.9074263462281,
   "min_gradient_pct": -2.682798326256375
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.62442030210165,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 872.0,
   "end_distance_m": 875.0,
   "start_elevation_m": 426.4089532202512,
   "end_elevation_m": 427.14768582931424,
   "min_gradient_pct": -1.3406217333132038
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.231278724034837,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 872.0,
   "end_distance_m": 877.0,
   "start_elevation_m": 426.4089532202512,
   "end_elevation_m": 427.62051715645293,
   "min_gradient_pct": -0.6546532587231013
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.531628297761813,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 871.0,
   "end_distance_m": 881.0,
   "start_elevation_m": 426.1841389499965,
   "end_elevation_m": 428.5373017797727,
   "min_gradient_pct": 0.00896695652102153
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.623541939589757,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min"
   ],
   "start_distance_m": 866.0,
   "end_distance_m": 886.0,
   "start_elevation_m": 425.2038034842354,
   "end_elevation_m": 429.52851187215333,
   "min_gradient_pct": 1.1051795062655856,
   "suppressed_min_gradient_pct": 1.1043147674593001,
   "suppressed_min_location_m": [
    0.0,
    20.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.675123318283795,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min"
   ],
   "start_distance_m": 864.0,
   "end_distance_m": 889.0,
   "start_elevation_m": 424.89657353462485,
   "end_elevation_m": 430.0653543641958,
   "min_gradient_pct": 1.7084116392593387,
   "suppressed_min_gradient_pct": 1.2410815429884678,
   "suppressed_min_location_m": [
    0.0,
    25.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.78001106651527,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min"
   ],
   "start_distance_m": 850.0,
   "end_distance_m": 900.0,
   "start_elevation_m": 422.5694702022141,
   "end_elevation_m": 431.95947573547176,
   "min_gradient_pct": 2.2596762304206095,
   "suppressed_min_gradient_pct": 1.8524772010885044,
   "suppressed_min_location_m": [
    0.0,
    50.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.851936511821748,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min"
   ],
   "start_distance_m": 804.0,
   "end_distance_m": 904.0,
   "start_elevation_m": 415.79180172231094,
   "end_elevation_m": 432.6437382341327,
   "min_gradient_pct": 2.7590754723368605,
   "suppressed_min_gradient_pct": 2.0899399217078667,
   "suppressed_min_location_m": [
    0.0,
    100.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.37,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 208.0,
  "shape_class": "sustained"
 },
 "length_m": 910.0626747757718,
 "start_elevation_m": 341.9244512530616,
 "end_elevation_m": 433.00245656494485,
 "endpoint_gain_m": 91.07800531188326,
 "overall_gradient_pct": 10.00788273558453,
 "accumulated_ascent_m": 91.24426299159296,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.231278724034837,
   "start_distance_m": 872.0,
   "end_distance_m": 877.0,
   "midpoint_distance_m": 874.5,
   "start_elevation_m": 426.4089532202512,
   "end_elevation_m": 427.62051715645293,
   "start_xy": [
    740966.4861346781,
    6532569.32199185
   ],
   "end_xy": [
    740971.0862379898,
    6532571.281341109
   ]
  },
  "max_10m": {
   "gradient_pct": 23.531628297761813,
   "start_distance_m": 871.0,
   "end_distance_m": 881.0,
   "midpoint_distance_m": 876.0,
   "start_elevation_m": 426.1841389499965,
   "end_elevation_m": 428.5373017797727,
   "start_xy": [
    740965.5661140158,
    6532568.930121997
   ],
   "end_xy": [
    740974.7663206392,
    6532572.848820517
   ]
  },
  "max_20m": {
   "gradient_pct": 21.623541939589757,
   "start_distance_m": 866.0,
   "end_distance_m": 886.0,
   "midpoint_distance_m": 876.0,
   "start_elevation_m": 425.2038034842354,
   "end_elevation_m": 429.52851187215333,
   "start_xy": [
    740960.966010704,
    6532566.970772738
   ],
   "end_xy": [
    740979.3664239509,
    6532574.808169777
   ]
  },
  "max_25m": {
   "gradient_pct": 20.675123318283795,
   "start_distance_m": 864.0,
   "end_distance_m": 889.0,
   "midpoint_distance_m": 876.5,
   "start_elevation_m": 424.89657353462485,
   "end_elevation_m": 430.0653543641958,
   "start_xy": [
    740959.1259693793,
    6532566.187033034
   ],
   "end_xy": [
    740981.9846057734,
    6532576.252411151
   ]
  },
  "max_50m": {
   "gradient_pct": 18.78001106651527,
   "start_distance_m": 850.0,
   "end_distance_m": 900.0,
   "midpoint_distance_m": 875.0,
   "start_elevation_m": 422.5694702022141,
   "end_elevation_m": 431.95947573547176,
   "start_xy": [
    740945.4273630205,
    6532563.986964214
   ],
   "end_xy": [
    740991.250401921,
    6532582.180734839
   ]
  },
  "max_100m": {
   "gradient_pct": 16.851936511821748,
   "start_distance_m": 804.0,
   "end_distance_m": 904.0,
   "midpoint_distance_m": 854.0,
   "start_elevation_m": 415.79180172231094,
   "end_elevation_m": 432.6437382341327,
   "start_xy": [
    740901.0471159758,
    6532554.60428011
   ],
   "end_xy": [
    740994.6968147747,
    6532584.1820471855
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.6546532587231013,
   "start_distance_m": 437.0,
   "end_distance_m": 442.0,
   "midpoint_distance_m": 439.5,
   "start_elevation_m": 381.72313903378534,
   "end_elevation_m": 381.6904063708492,
   "start_xy": [
    740692.5278064777,
    6532784.500919965
   ],
   "end_xy": [
    740696.4754889973,
    6532781.4324019635
   ]
  },
  "min_10m": {
   "gradient_pct": 0.00896695652102153,
   "start_distance_m": 437.0,
   "end_distance_m": 447.0,
   "midpoint_distance_m": 442.0,
   "start_elevation_m": 381.72313903378534,
   "end_elevation_m": 381.72403572943745,
   "start_xy": [
    740692.5278064777,
    6532784.500919965
   ],
   "end_xy": [
    740701.0748443907,
    6532779.892773435
   ]
  },
  "min_20m": {
   "gradient_pct": 1.1051795062655856,
   "start_distance_m": 428.0,
   "end_distance_m": 448.0,
   "midpoint_distance_m": 438.0,
   "start_elevation_m": 381.53083192692077,
   "end_elevation_m": 381.7518678281739,
   "start_xy": [
    740685.4219779427,
    6532790.024252367
   ],
   "end_xy": [
    740702.0643362879,
    6532779.748185105
   ]
  },
  "min_25m": {
   "gradient_pct": 1.7084116392593387,
   "start_distance_m": 426.0,
   "end_distance_m": 451.0,
   "midpoint_distance_m": 438.5,
   "start_elevation_m": 381.4560122233071,
   "end_elevation_m": 381.8831151331219,
   "start_xy": [
    740683.8429049349,
    6532791.251659568
   ],
   "end_xy": [
    740704.9379365869,
    6532780.212624107
   ]
  },
  "min_50m": {
   "gradient_pct": 2.2596762304206095,
   "start_distance_m": 26.0,
   "end_distance_m": 76.0,
   "midpoint_distance_m": 51.0,
   "start_elevation_m": 342.259199510162,
   "end_elevation_m": 343.3890376253723,
   "start_xy": [
    740352.9648553274,
    6532664.965304846
   ],
   "end_xy": [
    740393.5299617263,
    6532694.19666032
   ]
  },
  "min_100m": {
   "gradient_pct": 2.7590754723368605,
   "start_distance_m": 21.0,
   "end_distance_m": 121.0,
   "midpoint_distance_m": 71.0,
   "start_elevation_m": 342.16373612289937,
   "end_elevation_m": 344.9228115952362,
   "start_xy": [
    740348.9083446875,
    6532662.042169299
   ],
   "end_xy": [
    740430.1014248584,
    6532720.416518169
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.92365629884432,
   "start_distance_m": 872.0,
   "end_distance_m": 874.0,
   "midpoint_distance_m": 873.0,
   "start_elevation_m": 426.4089532202512,
   "end_elevation_m": 426.9074263462281,
   "start_xy": [
    740966.4861346781,
    6532569.32199185
   ],
   "end_xy": [
    740968.3261760027,
    6532570.105731553
   ]
  },
  "max_3m": {
   "gradient_pct": 24.62442030210165,
   "start_distance_m": 872.0,
   "end_distance_m": 875.0,
   "midpoint_distance_m": 873.5,
   "start_elevation_m": 426.4089532202512,
   "end_elevation_m": 427.14768582931424,
   "start_xy": [
    740966.4861346781,
    6532569.32199185
   ],
   "end_xy": [
    740969.2461966651,
    6532570.497601406
   ]
  }
 },
 "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": 0.023,
   "windows_resited": [],
   "windows_unresolved": [],
   "minima_resited": [
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.179,
   "obstruction_max_height_m": 19.66,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    0.0,
    20.0
   ]
  ],
  "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-mc5",
   "road_pbf": "block-batch-fr-mc5.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_E740-N6532_0m5@22LHD4ML-2025-09-15.tif",
   "data/cache/fr/ign-lidarhd_dtm_E741-N6532_0m5@22LHD4ML-2025-09-15.tif"
  ],
  "calculated_at": "2026-09-22T17:32:32+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc5.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc5",
  "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": [
   "E740-N6532",
   "E741-N6532"
  ],
  "elevation_blocks": [
   "22LHD4ML@2025-09-15"
  ],
  "ign_dalles": [
   "LHD_FXX_0740_6533_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0741_6533_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD4ML"
  ],
  "ign_editions": [
   "2025-09-15"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0740_6533_MNT_O_0M50_LAMB93_IGN69": "2025-09-15",
   "LHD_FXX_0741_6533_MNT_O_0M50_LAMB93_IGN69": "2025-09-15"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "structure_mask_ranges_m": [
   [
    0.0,
    15.0
   ],
   [
    0.0,
    15.0
   ]
  ],
  "carriageway": {
   "stations": 43,
   "stations_resolved": 43,
   "width_median_m": 5.75,
   "width_p10_m": 4.05,
   "width_min_m": 2.5,
   "width_max_m": 10.25,
   "bounded_share": 0.186,
   "unbounded_share": 0.814,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.62,
   "window_m": [
    864.0,
    889.0
   ],
   "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": 43,
    "stations_resolved": 43,
    "width_median_m": 5.75,
    "width_p10_m": 1.05,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.698,
    "unbounded_share": 0.302,
    "confidence_median": 1.0,
    "width_median_bounded_m": 4.5,
    "window_m": [
     864.0,
     889.0
    ],
    "width_at_max25_m": 5.5,
    "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": "Thiers",
  "county": "Puy-de-D\u00f4me",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}