{
 "ocl_version": "0.1.0",
 "name": "Route de la Br\u00e9assi\u00e8re",
 "slug": "route-de-la-breassiere",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 35.085571911042734,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1111.0,
   "end_distance_m": 1113.0,
   "start_elevation_m": 542.7585777316701,
   "end_elevation_m": 543.460289169891,
   "min_gradient_pct": -0.8404438370803291
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 28.36518110106378,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1111.0,
   "end_distance_m": 1114.0,
   "start_elevation_m": 542.7585777316701,
   "end_elevation_m": 543.609533164702,
   "min_gradient_pct": -0.28339592971254507
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.677995418979663,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1111.0,
   "end_distance_m": 1116.0,
   "start_elevation_m": 542.7585777316701,
   "end_elevation_m": 543.9424775026191,
   "min_gradient_pct": -0.17389376995311068
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.377404849754157,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 966.0,
   "end_distance_m": 976.0,
   "start_elevation_m": 521.8166759789779,
   "end_elevation_m": 523.8544164639533,
   "min_gradient_pct": 0.2168767940293037
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.135072817939772,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 953.0,
   "end_distance_m": 973.0,
   "start_elevation_m": 519.2226920303654,
   "end_elevation_m": 523.2497065939533,
   "min_gradient_pct": 0.40761348525961694
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.157657138756804,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 951.0,
   "end_distance_m": 976.0,
   "start_elevation_m": 518.8150021792641,
   "end_elevation_m": 523.8544164639533,
   "min_gradient_pct": 0.46919749724929716
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.727671979940624,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 931.0,
   "end_distance_m": 981.0,
   "start_elevation_m": 514.968917367034,
   "end_elevation_m": 524.8327533570043,
   "min_gradient_pct": 0.9778470026966488
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.466430236681163,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 909.0,
   "end_distance_m": 1009.0,
   "start_elevation_m": 511.0718918595411,
   "end_elevation_m": 529.5383220962223,
   "min_gradient_pct": 1.1812232740521722
  }
 ],
 "shape": {
  "ascent_concentration": 0.351,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 309.0,
  "shape_class": "sustained"
 },
 "length_m": 1501.9802290449752,
 "start_elevation_m": 422.21811681834083,
 "end_elevation_m": 568.4385811328057,
 "endpoint_gain_m": 146.22046431446483,
 "overall_gradient_pct": 9.73517903144692,
 "accumulated_ascent_m": 146.35757972020247,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.677995418979663,
   "start_distance_m": 1111.0,
   "end_distance_m": 1116.0,
   "midpoint_distance_m": 1113.5,
   "start_elevation_m": 542.7585777316701,
   "end_elevation_m": 543.9424775026191,
   "start_xy": [
    802182.6409089214,
    6488634.373931666
   ],
   "end_xy": [
    802180.9626120088,
    6488629.664014525
   ]
  },
  "max_10m": {
   "gradient_pct": 20.377404849754157,
   "start_distance_m": 966.0,
   "end_distance_m": 976.0,
   "midpoint_distance_m": 971.0,
   "start_elevation_m": 521.8166759789779,
   "end_elevation_m": 523.8544164639533,
   "start_xy": [
    802198.0741184385,
    6488769.354978382
   ],
   "end_xy": [
    802202.065725408,
    6488760.186168546
   ]
  },
  "max_20m": {
   "gradient_pct": 20.135072817939772,
   "start_distance_m": 953.0,
   "end_distance_m": 973.0,
   "midpoint_distance_m": 963.0,
   "start_elevation_m": 519.2226920303654,
   "end_elevation_m": 523.2497065939533,
   "start_xy": [
    802192.9574573446,
    6488781.304370702
   ],
   "end_xy": [
    802200.8682433171,
    6488762.9368114965
   ]
  },
  "max_25m": {
   "gradient_pct": 20.157657138756804,
   "start_distance_m": 951.0,
   "end_distance_m": 976.0,
   "midpoint_distance_m": 963.5,
   "start_elevation_m": 518.8150021792641,
   "end_elevation_m": 523.8544164639533,
   "start_xy": [
    802192.2279726381,
    6488783.166587678
   ],
   "end_xy": [
    802202.065725408,
    6488760.186168546
   ]
  },
  "max_50m": {
   "gradient_pct": 19.727671979940624,
   "start_distance_m": 931.0,
   "end_distance_m": 981.0,
   "midpoint_distance_m": 956.0,
   "start_elevation_m": 514.968917367034,
   "end_elevation_m": 524.8327533570043,
   "start_xy": [
    802187.8912050911,
    6488802.372897447
   ],
   "end_xy": [
    802204.0615288927,
    6488755.601763628
   ]
  },
  "max_100m": {
   "gradient_pct": 18.466430236681163,
   "start_distance_m": 909.0,
   "end_distance_m": 1009.0,
   "midpoint_distance_m": 959.0,
   "start_elevation_m": 511.0718918595411,
   "end_elevation_m": 529.5383220962223,
   "start_xy": [
    802189.3013665775,
    6488824.2345627155
   ],
   "end_xy": [
    802214.7655922297,
    6488729.851359956
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.17389376995311068,
   "start_distance_m": 727.0,
   "end_distance_m": 732.0,
   "midpoint_distance_m": 729.5,
   "start_elevation_m": 499.5291688395351,
   "end_elevation_m": 499.52047415103743,
   "start_xy": [
    802274.6746211261,
    6488975.289048303
   ],
   "end_xy": [
    802270.2299242667,
    6488972.999061807
   ]
  },
  "min_10m": {
   "gradient_pct": 0.2168767940293037,
   "start_distance_m": 722.0,
   "end_distance_m": 732.0,
   "midpoint_distance_m": 727.0,
   "start_elevation_m": 499.4987864716345,
   "end_elevation_m": 499.52047415103743,
   "start_xy": [
    802279.1278694546,
    6488977.562499275
   ],
   "end_xy": [
    802270.2299242667,
    6488972.999061807
   ]
  },
  "min_20m": {
   "gradient_pct": 0.40761348525961694,
   "start_distance_m": 722.0,
   "end_distance_m": 742.0,
   "midpoint_distance_m": 732.0,
   "start_elevation_m": 499.4987864716345,
   "end_elevation_m": 499.5803091686864,
   "start_xy": [
    802279.1278694546,
    6488977.562499275
   ],
   "end_xy": [
    802261.3717049393,
    6488968.3588085435
   ]
  },
  "min_25m": {
   "gradient_pct": 0.46919749724929716,
   "start_distance_m": 722.0,
   "end_distance_m": 747.0,
   "midpoint_distance_m": 734.5,
   "start_elevation_m": 499.4987864716345,
   "end_elevation_m": 499.6160858459468,
   "start_xy": [
    802279.1278694546,
    6488977.562499275
   ],
   "end_xy": [
    802256.9425952756,
    6488966.038681912
   ]
  },
  "min_50m": {
   "gradient_pct": 0.9778470026966488,
   "start_distance_m": 711.0,
   "end_distance_m": 761.0,
   "midpoint_distance_m": 736.0,
   "start_elevation_m": 499.3246916093203,
   "end_elevation_m": 499.81361511066865,
   "start_xy": [
    802288.9250157768,
    6488982.564091416
   ],
   "end_xy": [
    802245.162328956,
    6488958.653113235
   ]
  },
  "min_100m": {
   "gradient_pct": 1.1812232740521722,
   "start_distance_m": 1251.0,
   "end_distance_m": 1351.0,
   "midpoint_distance_m": 1301.0,
   "start_elevation_m": 558.0236007112277,
   "end_elevation_m": 559.2048239852799,
   "start_xy": [
    802119.1430232581,
    6488537.116042311
   ],
   "end_xy": [
    802174.5555139225,
    6488454.027698038
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 35.085571911042734,
   "start_distance_m": 1111.0,
   "end_distance_m": 1113.0,
   "midpoint_distance_m": 1112.0,
   "start_elevation_m": 542.7585777316701,
   "end_elevation_m": 543.460289169891,
   "start_xy": [
    802182.6409089214,
    6488634.373931666
   ],
   "end_xy": [
    802181.9695901563,
    6488632.489964809
   ]
  },
  "max_3m": {
   "gradient_pct": 28.36518110106378,
   "start_distance_m": 1111.0,
   "end_distance_m": 1114.0,
   "midpoint_distance_m": 1112.5,
   "start_elevation_m": 542.7585777316701,
   "end_elevation_m": 543.609533164702,
   "start_xy": [
    802182.6409089214,
    6488634.373931666
   ],
   "end_xy": [
    802181.6339307738,
    6488631.547981381
   ]
  }
 },
 "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": 0.11,
   "obstruction_max_height_m": 19.37,
   "flagged_windows_m": [
    2,
    3,
    5,
    10
   ]
  },
  "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_E802-N6488_0m5@22LHD4NL-2025-08-06.tif",
   "data/cache/fr/ign-lidarhd_dtm_E802-N6489_0m5@22LHD4NL-2025-08-06.tif"
  ],
  "calculated_at": "2026-09-22T15:21:28+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": [
   "E802-N6488",
   "E802-N6489"
  ],
  "elevation_blocks": [
   "22LHD4NL@2025-08-06"
  ],
  "ign_dalles": [
   "LHD_FXX_0802_6489_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0802_6490_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD4NL"
  ],
  "ign_editions": [
   "2025-08-06"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0802_6489_MNT_O_0M50_LAMB93_IGN69": "2025-08-06",
   "LHD_FXX_0802_6490_MNT_O_0M50_LAMB93_IGN69": "2025-08-06"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 2,
  "carriageway": {
   "stations": 67,
   "stations_resolved": 67,
   "width_median_m": 7.25,
   "width_p10_m": 4.95,
   "width_min_m": 2.75,
   "width_max_m": 12.0,
   "bounded_share": 0.239,
   "unbounded_share": 0.761,
   "confidence_median": 0.0,
   "width_median_bounded_m": 7.0,
   "window_m": [
    951.0,
    976.0
   ],
   "width_at_max25_m": 7.75,
   "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": 67,
    "stations_resolved": 67,
    "width_median_m": 7.75,
    "width_p10_m": 2.15,
    "width_min_m": 1.0,
    "width_max_m": 12.0,
    "bounded_share": 0.537,
    "unbounded_share": 0.463,
    "confidence_median": 0.911,
    "width_median_bounded_m": 6.25,
    "window_m": [
     951.0,
     976.0
    ],
    "width_at_max25_m": 8.25,
    "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": "La Fouillouse",
  "county": "Loire",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}