{
 "ocl_version": "0.1.0",
 "name": "Chemin d'Azkarraenea",
 "slug": "chemin-d-azkarraenea",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 32.262661034168616,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 108.0,
   "end_distance_m": 110.0,
   "start_elevation_m": 62.60516202594909,
   "end_elevation_m": 63.250415246632464,
   "min_gradient_pct": -4.4995252061657
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.142095579394937,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 108.0,
   "end_distance_m": 111.0,
   "start_elevation_m": 62.60516202594909,
   "end_elevation_m": 63.38942489333094,
   "min_gradient_pct": -4.456061339194643
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.404398450624342,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 105.0,
   "end_distance_m": 110.0,
   "start_elevation_m": 62.08019532410125,
   "end_elevation_m": 63.250415246632464,
   "min_gradient_pct": -3.6445451773541038
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.366777211674105,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 213.0,
   "end_distance_m": 223.0,
   "start_elevation_m": 79.13738792133631,
   "end_elevation_m": 81.37406564250372,
   "min_gradient_pct": -1.8533838546922254
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.247789311469063,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 209.0,
   "end_distance_m": 229.0,
   "start_elevation_m": 78.31740549859403,
   "end_elevation_m": 82.56696336088784,
   "min_gradient_pct": 2.238325868324118
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.478015857663365,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 201.0,
   "end_distance_m": 226.0,
   "start_elevation_m": 76.85350013461486,
   "end_elevation_m": 81.9730040990307,
   "min_gradient_pct": 3.8139813145670303
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.53505071610033,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 61.0,
   "end_distance_m": 111.0,
   "start_elevation_m": 54.121899535280775,
   "end_elevation_m": 63.38942489333094,
   "min_gradient_pct": 5.547397855242807
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.228800123001356,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 63.0,
   "end_distance_m": 163.0,
   "start_elevation_m": 54.395458245621846,
   "end_elevation_m": 71.6242583686232,
   "min_gradient_pct": 10.827414328461522
  }
 ],
 "shape": {
  "ascent_concentration": 0.312,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 128.0,
  "shape_class": "sustained"
 },
 "length_m": 242.4000000002787,
 "start_elevation_m": 50.29111375884006,
 "end_elevation_m": 84.05557891912134,
 "endpoint_gain_m": 33.76446516028128,
 "overall_gradient_pct": 13.929234802080224,
 "accumulated_ascent_m": 34.10658259235705,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.404398450624342,
   "start_distance_m": 105.0,
   "end_distance_m": 110.0,
   "midpoint_distance_m": 107.5,
   "start_elevation_m": 62.08019532410125,
   "end_elevation_m": 63.250415246632464,
   "start_xy": [
    350610.10537501407,
    6264371.420467471
   ],
   "end_xy": [
    350607.801099663,
    6264367.207578802
   ]
  },
  "max_10m": {
   "gradient_pct": 22.366777211674105,
   "start_distance_m": 213.0,
   "end_distance_m": 223.0,
   "midpoint_distance_m": 218.0,
   "start_elevation_m": 79.13738792133631,
   "end_elevation_m": 81.37406564250372,
   "start_xy": [
    350540.8970592943,
    6264298.903494702
   ],
   "end_xy": [
    350540.28910791315,
    6264288.921992053
   ]
  },
  "max_20m": {
   "gradient_pct": 21.247789311469063,
   "start_distance_m": 209.0,
   "end_distance_m": 229.0,
   "midpoint_distance_m": 219.0,
   "start_elevation_m": 78.31740549859403,
   "end_elevation_m": 82.56696336088784,
   "start_xy": [
    350541.1402398468,
    6264302.896095761
   ],
   "end_xy": [
    350539.92433708446,
    6264282.933090464
   ]
  },
  "max_25m": {
   "gradient_pct": 20.478015857663365,
   "start_distance_m": 201.0,
   "end_distance_m": 226.0,
   "midpoint_distance_m": 213.5,
   "start_elevation_m": 76.85350013461486,
   "end_elevation_m": 81.9730040990307,
   "start_xy": [
    350541.6266009517,
    6264310.88129788
   ],
   "end_xy": [
    350540.1067224988,
    6264285.927541259
   ]
  },
  "max_50m": {
   "gradient_pct": 18.53505071610033,
   "start_distance_m": 61.0,
   "end_distance_m": 111.0,
   "midpoint_distance_m": 86.0,
   "start_elevation_m": 54.121899535280775,
   "end_elevation_m": 63.38942489333094,
   "start_xy": [
    350594.09375231556,
    6264409.735898751
   ],
   "end_xy": [
    350607.1671352021,
    6264366.43421662
   ]
  },
  "max_100m": {
   "gradient_pct": 17.228800123001356,
   "start_distance_m": 63.0,
   "end_distance_m": 163.0,
   "midpoint_distance_m": 113.0,
   "start_elevation_m": 54.395458245621846,
   "end_elevation_m": 71.6242583686232,
   "start_xy": [
    350595.32268538856,
    6264408.1580129815
   ],
   "end_xy": [
    350567.28395429585,
    6264334.864621822
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.6445451773541038,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 50.29111375884006,
   "end_elevation_m": 50.10888649997236,
   "start_xy": [
    350581.126,
    6264467.35
   ],
   "end_xy": [
    350579.71733774256,
    6264462.552534977
   ]
  },
  "min_10m": {
   "gradient_pct": -1.8533838546922254,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 50.29111375884006,
   "end_elevation_m": 50.10577537337084,
   "start_xy": [
    350581.126,
    6264467.35
   ],
   "end_xy": [
    350579.27048656065,
    6264457.641952833
   ]
  },
  "min_20m": {
   "gradient_pct": 2.238325868324118,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 50.29111375884006,
   "end_elevation_m": 50.738778932504886,
   "start_xy": [
    350581.126,
    6264467.35
   ],
   "end_xy": [
    350579.7848382369,
    6264447.655189476
   ]
  },
  "min_25m": {
   "gradient_pct": 3.8139813145670303,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 50.29111375884006,
   "end_elevation_m": 51.24460908748182,
   "start_xy": [
    350581.126,
    6264467.35
   ],
   "end_xy": [
    350580.70896151976,
    6264442.761204101
   ]
  },
  "min_50m": {
   "gradient_pct": 5.547397855242807,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 50.29111375884006,
   "end_elevation_m": 53.064812686461465,
   "start_xy": [
    350581.126,
    6264467.35
   ],
   "end_xy": [
    350588.40642405604,
    6264419.004779584
   ]
  },
  "min_100m": {
   "gradient_pct": 10.827414328461522,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 50.29111375884006,
   "end_elevation_m": 61.118528087301584,
   "start_xy": [
    350581.126,
    6264467.35
   ],
   "end_xy": [
    350610.4753518926,
    6264376.406760394
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 32.262661034168616,
   "start_distance_m": 108.0,
   "end_distance_m": 110.0,
   "midpoint_distance_m": 109.0,
   "start_elevation_m": 62.60516202594909,
   "end_elevation_m": 63.250415246632464,
   "start_xy": [
    350609.06902858475,
    6264368.754303163
   ],
   "end_xy": [
    350607.801099663,
    6264367.207578802
   ]
  },
  "max_3m": {
   "gradient_pct": 26.142095579394937,
   "start_distance_m": 108.0,
   "end_distance_m": 111.0,
   "midpoint_distance_m": 109.5,
   "start_elevation_m": 62.60516202594909,
   "end_elevation_m": 63.38942489333094,
   "start_xy": [
    350609.06902858475,
    6264368.754303163
   ],
   "end_xy": [
    350607.1671352021,
    6264366.43421662
   ]
  }
 },
 "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": 0.443,
   "obstruction_max_height_m": 26.99,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "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_E350-N6264_0m5@21LHD1EQ-2025-09-26.tif"
  ],
  "calculated_at": "2026-09-20T07:01:33+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": [
   "E350-N6264"
  ],
  "elevation_blocks": [
   "21LHD1EQ@2025-09-26"
  ],
  "ign_dalles": [
   "LHD_FXX_0350_6265_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD1EQ"
  ],
  "ign_editions": [
   "2025-09-26"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0350_6265_MNT_O_0M50_LAMB93_IGN69": "2025-09-26"
  },
  "route_cut_m": 242.4,
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 16,
   "stations_resolved": 16,
   "width_median_m": 4.5,
   "width_p10_m": 2.75,
   "width_min_m": 2.25,
   "width_max_m": 12.0,
   "bounded_share": 0.188,
   "unbounded_share": 0.812,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.5,
   "window_m": [
    201.0,
    226.0
   ],
   "width_at_max25_m": 4.5,
   "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": 16,
    "stations_resolved": 16,
    "width_median_m": 3.0,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.875,
    "unbounded_share": 0.125,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.75,
    "window_m": [
     201.0,
     226.0
    ],
    "width_at_max25_m": 3.25,
    "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": "Hasparren",
  "county": "Pyr\u00e9n\u00e9es-Atlantiques",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}