{
 "ocl_version": "0.1.0",
 "name": "Chemin d'Ameztoia",
 "slug": "chemin-d-ameztoia",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 47.09039799803065,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 97.0,
   "end_distance_m": 99.0,
   "start_elevation_m": 88.99958116724704,
   "end_elevation_m": 89.94138912720766,
   "min_gradient_pct": -5.1671477954862155
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 44.2927340764309,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 96.0,
   "end_distance_m": 99.0,
   "start_elevation_m": 88.61260710491473,
   "end_elevation_m": 89.94138912720766,
   "min_gradient_pct": -6.486148059062202
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 43.1736412367178,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 94.0,
   "end_distance_m": 99.0,
   "start_elevation_m": 87.78270706537177,
   "end_elevation_m": 89.94138912720766,
   "min_gradient_pct": -0.8485885671925075
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 31.814308969682088,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 94.0,
   "end_distance_m": 104.0,
   "start_elevation_m": 87.78270706537177,
   "end_elevation_m": 90.96413796233998,
   "min_gradient_pct": 0.34653742296967494
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 26.86362642300786,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 267.0,
   "end_distance_m": 287.0,
   "start_elevation_m": 111.59173064587269,
   "end_elevation_m": 116.96445593047426,
   "min_gradient_pct": 0.8042467289693889
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 26.511143502273907,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 265.0,
   "end_distance_m": 290.0,
   "start_elevation_m": 111.08405442508767,
   "end_elevation_m": 117.71184030065615,
   "min_gradient_pct": 0.7375149161321133
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 24.89005259670455,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 255.0,
   "end_distance_m": 305.0,
   "start_elevation_m": 108.68382814192015,
   "end_elevation_m": 121.12885444027242,
   "min_gradient_pct": 2.3648985478937448
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 22.000830497910155,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 246.0,
   "end_distance_m": 346.0,
   "start_elevation_m": 106.87932816177761,
   "end_elevation_m": 128.88015865968777,
   "min_gradient_pct": 8.883966588682682
  }
 ],
 "shape": {
  "ascent_concentration": 0.39,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 141.0,
  "shape_class": "sustained"
 },
 "length_m": 560.1999999995979,
 "start_elevation_m": 81.29200089599694,
 "end_elevation_m": 150.72080282113834,
 "endpoint_gain_m": 69.4288019251414,
 "overall_gradient_pct": 12.39357406733153,
 "accumulated_ascent_m": 69.87618122404767,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 43.1736412367178,
   "start_distance_m": 94.0,
   "end_distance_m": 99.0,
   "midpoint_distance_m": 96.5,
   "start_elevation_m": 87.78270706537177,
   "end_elevation_m": 89.94138912720766,
   "start_xy": [
    358263.0025752437,
    6261028.66989936
   ],
   "end_xy": [
    358260.02749392774,
    6261024.651331062
   ]
  },
  "max_10m": {
   "gradient_pct": 31.814308969682088,
   "start_distance_m": 94.0,
   "end_distance_m": 104.0,
   "midpoint_distance_m": 99.0,
   "start_elevation_m": 87.78270706537177,
   "end_elevation_m": 90.96413796233998,
   "start_xy": [
    358263.0025752437,
    6261028.66989936
   ],
   "end_xy": [
    358257.02695031255,
    6261020.651989214
   ]
  },
  "max_20m": {
   "gradient_pct": 26.86362642300786,
   "start_distance_m": 267.0,
   "end_distance_m": 287.0,
   "midpoint_distance_m": 277.0,
   "start_elevation_m": 111.59173064587269,
   "end_elevation_m": 116.96445593047426,
   "start_xy": [
    358158.70878813684,
    6260902.999052779
   ],
   "end_xy": [
    358138.99601746484,
    6260899.621676218
   ]
  },
  "max_25m": {
   "gradient_pct": 26.511143502273907,
   "start_distance_m": 265.0,
   "end_distance_m": 290.0,
   "midpoint_distance_m": 277.5,
   "start_elevation_m": 111.08405442508767,
   "end_elevation_m": 117.71184030065615,
   "start_xy": [
    358160.68006520404,
    6260903.336790435
   ],
   "end_xy": [
    358136.0387449486,
    6260899.117210486
   ]
  },
  "max_50m": {
   "gradient_pct": 24.89005259670455,
   "start_distance_m": 255.0,
   "end_distance_m": 305.0,
   "midpoint_distance_m": 280.0,
   "start_elevation_m": 108.68382814192015,
   "end_elevation_m": 121.12885444027242,
   "start_xy": [
    358170.46931944584,
    6260905.37674102
   ],
   "end_xy": [
    358121.2320786804,
    6260896.716661793
   ]
  },
  "max_100m": {
   "gradient_pct": 22.000830497910155,
   "start_distance_m": 246.0,
   "end_distance_m": 346.0,
   "midpoint_distance_m": 296.0,
   "start_elevation_m": 106.87932816177761,
   "end_elevation_m": 128.88015865968777,
   "start_xy": [
    358179.2753478719,
    6260907.235198272
   ],
   "end_xy": [
    358081.55934780766,
    6260886.551927329
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.8485885671925075,
   "start_distance_m": 85.0,
   "end_distance_m": 90.0,
   "midpoint_distance_m": 87.5,
   "start_elevation_m": 87.50878919300003,
   "end_elevation_m": 87.4663597646404,
   "start_xy": [
    358268.40548390395,
    6261035.86628396
   ],
   "end_xy": [
    358265.3826402965,
    6261031.884753998
   ]
  },
  "min_10m": {
   "gradient_pct": 0.34653742296967494,
   "start_distance_m": 383.0,
   "end_distance_m": 393.0,
   "midpoint_distance_m": 388.0,
   "start_elevation_m": 131.97974662208546,
   "end_elevation_m": 132.01440036438242,
   "start_xy": [
    358047.36200794653,
    6260872.532894214
   ],
   "end_xy": [
    358037.8771661142,
    6260869.375042305
   ]
  },
  "min_20m": {
   "gradient_pct": 0.8042467289693889,
   "start_distance_m": 525.0,
   "end_distance_m": 545.0,
   "midpoint_distance_m": 535.0,
   "start_elevation_m": 150.1250469367309,
   "end_elevation_m": 150.2858962825248,
   "start_xy": [
    357916.0939127431,
    6260865.234232732
   ],
   "end_xy": [
    357899.18869869097,
    6260875.909419796
   ]
  },
  "min_25m": {
   "gradient_pct": 0.7375149161321133,
   "start_distance_m": 520.0,
   "end_distance_m": 545.0,
   "midpoint_distance_m": 532.5,
   "start_elevation_m": 150.10151755349176,
   "end_elevation_m": 150.2858962825248,
   "start_xy": [
    357920.5731545745,
    6260863.019197468
   ],
   "end_xy": [
    357899.18869869097,
    6260875.909419796
   ]
  },
  "min_50m": {
   "gradient_pct": 2.3648985478937448,
   "start_distance_m": 510.0,
   "end_distance_m": 560.0,
   "midpoint_distance_m": 535.0,
   "start_elevation_m": 149.52944073123368,
   "end_elevation_m": 150.71189000518055,
   "start_xy": [
    357930.15783800645,
    6260860.265550574
   ],
   "end_xy": [
    357886.65031691914,
    6260878.702726661
   ]
  },
  "min_100m": {
   "gradient_pct": 8.883966588682682,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 81.29200089599694,
   "end_elevation_m": 90.17596748467962,
   "start_xy": [
    358329.432,
    6261094.915
   ],
   "end_xy": [
    358259.43247766455,
    6261023.847617404
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 47.09039799803065,
   "start_distance_m": 97.0,
   "end_distance_m": 99.0,
   "midpoint_distance_m": 98.0,
   "start_elevation_m": 88.99958116724704,
   "end_elevation_m": 89.94138912720766,
   "start_xy": [
    358261.21752645413,
    6261026.258758382
   ],
   "end_xy": [
    358260.02749392774,
    6261024.651331062
   ]
  },
  "max_3m": {
   "gradient_pct": 44.2927340764309,
   "start_distance_m": 96.0,
   "end_distance_m": 99.0,
   "midpoint_distance_m": 97.5,
   "start_elevation_m": 88.61260710491473,
   "end_elevation_m": 89.94138912720766,
   "start_xy": [
    358261.8125427173,
    6261027.062472042
   ],
   "end_xy": [
    358260.02749392774,
    6261024.651331062
   ]
  }
 },
 "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": 0.383,
   "obstruction_max_height_m": 23.24,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [
   "short_window_divergence"
  ],
  "extent": []
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "06fa4c370391597f015858e97dcf01ca2f5b3640",
   "code_git_dirty": "false",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:0048c2bbb24ab95e",
   "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-pyr1",
   "road_pbf": "block-batch-fr-pyr1.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:c54ac68b3f57b41b"
  },
  "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_E357-N6260_0m5@21LHD1EQ-2025-09-26.tif",
   "data/cache/fr/ign-lidarhd_dtm_E357-N6261_0m5@21LHD1EQ-2025-09-26.tif",
   "data/cache/fr/ign-lidarhd_dtm_E358-N6260_0m5@21LHD1EQ-2025-09-26.tif",
   "data/cache/fr/ign-lidarhd_dtm_E358-N6261_0m5@21LHD1EQ-2025-09-26.tif"
  ],
  "calculated_at": "2026-09-20T06:58:47+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pyr1.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pyr1",
  "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": [
   "E357-N6260",
   "E357-N6261",
   "E358-N6260",
   "E358-N6261"
  ],
  "elevation_blocks": [
   "21LHD1EQ@2025-09-26"
  ],
  "ign_dalles": [
   "LHD_FXX_0357_6261_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0357_6262_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0358_6261_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0358_6262_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD1EQ"
  ],
  "ign_editions": [
   "2025-09-26"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0357_6261_MNT_O_0M50_LAMB93_IGN69": "2025-09-26",
   "LHD_FXX_0357_6262_MNT_O_0M50_LAMB93_IGN69": "2025-09-26",
   "LHD_FXX_0358_6261_MNT_O_0M50_LAMB93_IGN69": "2025-09-26",
   "LHD_FXX_0358_6262_MNT_O_0M50_LAMB93_IGN69": "2025-09-26"
  },
  "route_cut_m": 560.2,
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 28,
   "stations_resolved": 28,
   "width_median_m": 4.5,
   "width_p10_m": 2.75,
   "width_min_m": 2.0,
   "width_max_m": 8.75,
   "bounded_share": 0.143,
   "unbounded_share": 0.857,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.25,
   "window_m": [
    265.0,
    290.0
   ],
   "width_at_max25_m": 5.0,
   "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": 28,
    "stations_resolved": 28,
    "width_median_m": 3.5,
    "width_p10_m": 1.35,
    "width_min_m": 0.75,
    "width_max_m": 8.25,
    "bounded_share": 0.964,
    "unbounded_share": 0.036,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.5,
    "window_m": [
     265.0,
     290.0
    ],
    "width_at_max25_m": 3.0,
    "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": "Isturits",
  "county": "Pyr\u00e9n\u00e9es-Atlantiques",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}