{
 "ocl_version": "0.1.0",
 "name": "Chemin de Potxotegia",
 "slug": "chemin-de-potxotegia",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 39.939959854307716,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 139.0,
   "end_distance_m": 141.0,
   "start_elevation_m": 70.08787425744421,
   "end_elevation_m": 70.88667345453037,
   "min_gradient_pct": -0.1860662603686336
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 36.72111734929331,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 138.0,
   "end_distance_m": 141.0,
   "start_elevation_m": 69.78503993405157,
   "end_elevation_m": 70.88667345453037,
   "min_gradient_pct": 0.46365137270238205
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 34.72359471948266,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 140.0,
   "end_distance_m": 145.0,
   "start_elevation_m": 70.45499094629419,
   "end_elevation_m": 72.19117068226832,
   "min_gradient_pct": 2.4312038724407614
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 31.50882709960797,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 136.0,
   "end_distance_m": 146.0,
   "start_elevation_m": 69.31774294956108,
   "end_elevation_m": 72.46862565952188,
   "min_gradient_pct": 5.079879855686471
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 27.09222115093155,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 135.0,
   "end_distance_m": 155.0,
   "start_elevation_m": 69.11717934723957,
   "end_elevation_m": 74.53562357742588,
   "min_gradient_pct": 7.694576621635392
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.807562438085878,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 130.0,
   "end_distance_m": 155.0,
   "start_elevation_m": 68.08373296790441,
   "end_elevation_m": 74.53562357742588,
   "min_gradient_pct": 7.8625963995411325
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.795355654200222,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 126.0,
   "end_distance_m": 176.0,
   "start_elevation_m": 67.32795356322221,
   "end_elevation_m": 79.22563139032232,
   "min_gradient_pct": 10.418221532439176
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.31991548736613,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 82.0,
   "end_distance_m": 182.0,
   "start_elevation_m": 59.955811848127595,
   "end_elevation_m": 80.27572733549373,
   "min_gradient_pct": 12.831649732895187
  }
 ],
 "shape": {
  "ascent_concentration": 0.385,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 183.0,
  "shape_class": "sustained"
 },
 "length_m": 213.3932374388992,
 "start_elevation_m": 50.11144487610356,
 "end_elevation_m": 82.8941043837851,
 "endpoint_gain_m": 32.782659507681544,
 "overall_gradient_pct": 15.362557830384942,
 "accumulated_ascent_m": 32.79061256760495,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 34.72359471948266,
   "start_distance_m": 140.0,
   "end_distance_m": 145.0,
   "midpoint_distance_m": 142.5,
   "start_elevation_m": 70.45499094629419,
   "end_elevation_m": 72.19117068226832,
   "start_xy": [
    350934.393610495,
    6264748.234510511
   ],
   "end_xy": [
    350937.64239911403,
    6264752.035217354
   ]
  },
  "max_10m": {
   "gradient_pct": 31.50882709960797,
   "start_distance_m": 136.0,
   "end_distance_m": 146.0,
   "midpoint_distance_m": 141.0,
   "start_elevation_m": 69.31774294956108,
   "end_elevation_m": 72.46862565952188,
   "start_xy": [
    350931.7945795998,
    6264745.193945036
   ],
   "end_xy": [
    350938.2921568378,
    6264752.795358723
   ]
  },
  "max_20m": {
   "gradient_pct": 27.09222115093155,
   "start_distance_m": 135.0,
   "end_distance_m": 155.0,
   "midpoint_distance_m": 145.0,
   "start_elevation_m": 69.11717934723957,
   "end_elevation_m": 74.53562357742588,
   "start_xy": [
    350931.14482187596,
    6264744.433803667
   ],
   "end_xy": [
    350944.1399763521,
    6264759.636631041
   ]
  },
  "max_25m": {
   "gradient_pct": 25.807562438085878,
   "start_distance_m": 130.0,
   "end_distance_m": 155.0,
   "midpoint_distance_m": 142.5,
   "start_elevation_m": 68.08373296790441,
   "end_elevation_m": 74.53562357742588,
   "start_xy": [
    350927.89603325695,
    6264740.633096824
   ],
   "end_xy": [
    350944.1399763521,
    6264759.636631041
   ]
  },
  "max_50m": {
   "gradient_pct": 23.795355654200222,
   "start_distance_m": 126.0,
   "end_distance_m": 176.0,
   "midpoint_distance_m": 151.0,
   "start_elevation_m": 67.32795356322221,
   "end_elevation_m": 79.22563139032232,
   "start_xy": [
    350925.295775995,
    6264737.593580061
   ],
   "end_xy": [
    350955.4201995167,
    6264776.668948035
   ]
  },
  "max_100m": {
   "gradient_pct": 20.31991548736613,
   "start_distance_m": 82.0,
   "end_distance_m": 182.0,
   "midpoint_distance_m": 132.0,
   "start_elevation_m": 59.955811848127595,
   "end_elevation_m": 80.27572733549373,
   "start_xy": [
    350895.18578958214,
    6264705.713755042
   ],
   "end_xy": [
    350953.6562105567,
    6264782.367068643
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 2.4312038724407614,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 50.11144487610356,
   "end_elevation_m": 50.2330050697256,
   "start_xy": [
    350827.49,
    6264659.999
   ],
   "end_xy": [
    350831.655342292,
    6264662.764849494
   ]
  },
  "min_10m": {
   "gradient_pct": 5.079879855686471,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 50.11144487610356,
   "end_elevation_m": 50.61943286167221,
   "start_xy": [
    350827.49,
    6264659.999
   ],
   "end_xy": [
    350835.82103838644,
    6264665.530166121
   ]
  },
  "min_20m": {
   "gradient_pct": 7.694576621635392,
   "start_distance_m": 193.0,
   "end_distance_m": 213.0,
   "midpoint_distance_m": 203.0,
   "start_elevation_m": 81.35372202463186,
   "end_elevation_m": 82.89263734895894,
   "start_xy": [
    350947.5169453542,
    6264791.48635561
   ],
   "end_xy": [
    350936.2720948114,
    6264808.025803493
   ]
  },
  "min_25m": {
   "gradient_pct": 7.8625963995411325,
   "start_distance_m": 188.0,
   "end_distance_m": 213.0,
   "midpoint_distance_m": 200.5,
   "start_elevation_m": 80.92698824907366,
   "end_elevation_m": 82.89263734895894,
   "start_xy": [
    350950.3281579899,
    6264787.35149364
   ],
   "end_xy": [
    350936.2720948114,
    6264808.025803493
   ]
  },
  "min_50m": {
   "gradient_pct": 10.418221532439176,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 50.11144487610356,
   "end_elevation_m": 55.32055564232315,
   "start_xy": [
    350827.49,
    6264659.999
   ],
   "end_xy": [
    350869.62049576297,
    6264686.893005611
   ]
  },
  "min_100m": {
   "gradient_pct": 12.831649732895187,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 50.11144487610356,
   "end_elevation_m": 62.94309460899875,
   "start_xy": [
    350827.49,
    6264659.999
   ],
   "end_xy": [
    350906.4333718426,
    6264719.713675294
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 39.939959854307716,
   "start_distance_m": 139.0,
   "end_distance_m": 141.0,
   "midpoint_distance_m": 140.0,
   "start_elevation_m": 70.08787425744421,
   "end_elevation_m": 70.88667345453037,
   "start_xy": [
    350933.7438527712,
    6264747.474369142
   ],
   "end_xy": [
    350935.0433682188,
    6264748.994651879
   ]
  },
  "max_3m": {
   "gradient_pct": 36.72111734929331,
   "start_distance_m": 138.0,
   "end_distance_m": 141.0,
   "midpoint_distance_m": 139.5,
   "start_elevation_m": 69.78503993405157,
   "end_elevation_m": 70.88667345453037,
   "start_xy": [
    350933.0940950474,
    6264746.714227773
   ],
   "end_xy": [
    350935.0433682188,
    6264748.994651879
   ]
  }
 },
 "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": 0.126,
   "obstruction_max_height_m": 15.25,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier",
   "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": "2026-09-20T06:17:08+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"
  },
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 14,
   "stations_resolved": 14,
   "width_median_m": 5.88,
   "width_p10_m": 3.75,
   "width_min_m": 2.5,
   "width_max_m": 12.0,
   "bounded_share": 0.143,
   "unbounded_share": 0.857,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.25,
   "window_m": [
    130.0,
    155.0
   ],
   "width_at_max25_m": 5.88,
   "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": 14,
    "stations_resolved": 14,
    "width_median_m": 6.75,
    "width_p10_m": 2.03,
    "width_min_m": 1.0,
    "width_max_m": 12.0,
    "bounded_share": 0.714,
    "unbounded_share": 0.286,
    "confidence_median": 1.0,
    "width_median_bounded_m": 4.75,
    "window_m": [
     130.0,
     155.0
    ],
    "width_at_max25_m": 4.5,
    "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": "Hasparren",
  "county": "Pyr\u00e9n\u00e9es-Atlantiques",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}