{
 "ocl_version": "0.1.0",
 "name": "Chemin d'Itxale",
 "slug": "chemin-d-itxale",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 47.47796460737277,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 102.0,
   "end_distance_m": 104.0,
   "start_elevation_m": 272.96580738560107,
   "end_elevation_m": 273.9153666777485,
   "min_gradient_pct": -16.52117897635037,
   "suppressed_max_gradient_pct": 50.48502213209076,
   "suppressed_location_m": [
    110.0,
    112.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 33.58212294977344,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 172.0,
   "end_distance_m": 175.0,
   "start_elevation_m": 286.8584411855512,
   "end_elevation_m": 287.8659048740444,
   "min_gradient_pct": -6.877880883007492,
   "suppressed_max_gradient_pct": 53.06030595679658,
   "suppressed_location_m": [
    114.0,
    117.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 30.61131961675642,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 170.0,
   "end_distance_m": 175.0,
   "start_elevation_m": 286.3353388932066,
   "end_elevation_m": 287.8659048740444,
   "min_gradient_pct": 0.7759839784876021,
   "suppressed_max_gradient_pct": 45.71720789573874,
   "suppressed_location_m": [
    114.0,
    119.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.94621118516227,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 243.0,
   "end_distance_m": 253.0,
   "start_elevation_m": 298.50374992977385,
   "end_elevation_m": 300.8983710482901,
   "min_gradient_pct": 2.9750932318336254,
   "suppressed_max_gradient_pct": 36.98719093634509,
   "suppressed_location_m": [
    114.0,
    124.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.019753479137876,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 238.0,
   "end_distance_m": 258.0,
   "start_elevation_m": 297.42783788271186,
   "end_elevation_m": 301.83178857853943,
   "min_gradient_pct": 4.938738112584815,
   "suppressed_max_gradient_pct": 27.587988514306403,
   "suppressed_location_m": [
    109.0,
    129.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.694056016643117,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 234.0,
   "end_distance_m": 259.0,
   "start_elevation_m": 296.82077512811736,
   "end_elevation_m": 301.99428913227814,
   "min_gradient_pct": 5.634581767912323,
   "suppressed_max_gradient_pct": 26.23757599678993,
   "suppressed_location_m": [
    109.0,
    134.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.93241125210284,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 126.0,
   "end_distance_m": 176.0,
   "start_elevation_m": 278.96016622670567,
   "end_elevation_m": 287.9263718527571,
   "min_gradient_pct": 7.016213501793118,
   "suppressed_max_gradient_pct": 22.234548178904447,
   "suppressed_location_m": [
    102.0,
    152.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.175733492516315,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 165.0,
   "end_distance_m": 265.0,
   "start_elevation_m": 285.5644085321424,
   "end_elevation_m": 302.7401420246587,
   "min_gradient_pct": 7.418409541095286,
   "suppressed_max_gradient_pct": 19.314185420215892,
   "suppressed_location_m": [
    102.0,
    202.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.393,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 72.0,
  "shape_class": "sustained"
 },
 "length_m": 322.99999999993395,
 "start_elevation_m": 265.51087070312883,
 "end_elevation_m": 307.6452206392509,
 "endpoint_gain_m": 42.13434993612208,
 "overall_gradient_pct": 13.044690382703003,
 "accumulated_ascent_m": 43.64860929311038,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 30.61131961675642,
   "start_distance_m": 170.0,
   "end_distance_m": 175.0,
   "midpoint_distance_m": 172.5,
   "start_elevation_m": 286.3353388932066,
   "end_elevation_m": 287.8659048740444,
   "start_xy": [
    390284.8513687362,
    6233222.957869685
   ],
   "end_xy": [
    390289.8191501112,
    6233223.194789134
   ]
  },
  "max_10m": {
   "gradient_pct": 23.94621118516227,
   "start_distance_m": 243.0,
   "end_distance_m": 253.0,
   "midpoint_distance_m": 248.0,
   "start_elevation_m": 298.50374992977385,
   "end_elevation_m": 300.8983710482901,
   "start_xy": [
    390340.5045597491,
    6233180.832575544
   ],
   "end_xy": [
    390347.9445388754,
    6233174.2230578745
   ]
  },
  "max_20m": {
   "gradient_pct": 22.019753479137876,
   "start_distance_m": 238.0,
   "end_distance_m": 258.0,
   "midpoint_distance_m": 248.0,
   "start_elevation_m": 297.42783788271186,
   "end_elevation_m": 301.83178857853943,
   "start_xy": [
    390337.7547156966,
    6233185.008501512
   ],
   "end_xy": [
    390351.93655582215,
    6233171.212443204
   ]
  },
  "max_25m": {
   "gradient_pct": 20.694056016643117,
   "start_distance_m": 234.0,
   "end_distance_m": 259.0,
   "midpoint_distance_m": 246.5,
   "start_elevation_m": 296.82077512811736,
   "end_elevation_m": 301.99428913227814,
   "start_xy": [
    390335.61016381765,
    6233188.384573034
   ],
   "end_xy": [
    390352.7349592115,
    6233170.610320269
   ]
  },
  "max_50m": {
   "gradient_pct": 17.93241125210284,
   "start_distance_m": 126.0,
   "end_distance_m": 176.0,
   "midpoint_distance_m": 151.0,
   "start_elevation_m": 278.96016622670567,
   "end_elevation_m": 287.9263718527571,
   "start_xy": [
    390252.07562276744,
    6233232.000614194
   ],
   "end_xy": [
    390290.77373484493,
    6233222.896849566
   ]
  },
  "max_100m": {
   "gradient_pct": 17.175733492516315,
   "start_distance_m": 165.0,
   "end_distance_m": 265.0,
   "midpoint_distance_m": 215.0,
   "start_elevation_m": 285.5644085321424,
   "end_elevation_m": 302.7401420246587,
   "start_xy": [
    390279.97160369495,
    6233221.922734012
   ],
   "end_xy": [
    390357.52075366507,
    6233166.991496468
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.7759839784876021,
   "start_distance_m": 210.0,
   "end_distance_m": 215.0,
   "midpoint_distance_m": 212.5,
   "start_elevation_m": 293.7644056513325,
   "end_elevation_m": 293.80320485025686,
   "start_xy": [
    390320.08148939454,
    6233206.4958603615
   ],
   "end_xy": [
    390323.7871871834,
    6233203.139106416
   ]
  },
  "min_10m": {
   "gradient_pct": 2.9750932318336254,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 265.51087070312883,
   "end_elevation_m": 265.8083800263122,
   "start_xy": [
    390222.6,
    6233354.288
   ],
   "end_xy": [
    390225.0474544869,
    6233344.592126314
   ]
  },
  "min_20m": {
   "gradient_pct": 4.938738112584815,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 265.51087070312883,
   "end_elevation_m": 266.4986183256458,
   "start_xy": [
    390222.6,
    6233354.288
   ],
   "end_xy": [
    390227.4949089738,
    6233334.8962526275
   ]
  },
  "min_25m": {
   "gradient_pct": 5.634581767912323,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 265.51087070312883,
   "end_elevation_m": 266.9195161451069,
   "start_xy": [
    390222.6,
    6233354.288
   ],
   "end_xy": [
    390228.71863621724,
    6233330.048315785
   ]
  },
  "min_50m": {
   "gradient_pct": 7.016213501793118,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 265.51087070312883,
   "end_elevation_m": 269.0189774540254,
   "start_xy": [
    390222.6,
    6233354.288
   ],
   "end_xy": [
    390234.83727243455,
    6233305.80863157
   ]
  },
  "min_100m": {
   "gradient_pct": 7.418409541095286,
   "start_distance_m": 2.0,
   "end_distance_m": 102.0,
   "midpoint_distance_m": 52.0,
   "start_elevation_m": 265.5473978445058,
   "end_elevation_m": 272.96580738560107,
   "start_xy": [
    390223.0894908974,
    6233352.348825263
   ],
   "end_xy": [
    390246.8406863152,
    6233255.361387435
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 47.47796460737277,
   "start_distance_m": 102.0,
   "end_distance_m": 104.0,
   "midpoint_distance_m": 103.0,
   "start_elevation_m": 272.96580738560107,
   "end_elevation_m": 273.9153666777485,
   "start_xy": [
    390246.8406863152,
    6233255.361387435
   ],
   "end_xy": [
    390247.469466217,
    6233253.462799583
   ]
  },
  "max_3m": {
   "gradient_pct": 33.58212294977344,
   "start_distance_m": 172.0,
   "end_distance_m": 175.0,
   "midpoint_distance_m": 173.5,
   "start_elevation_m": 286.8584411855512,
   "end_elevation_m": 287.8659048740444,
   "start_xy": [
    390286.84532297624,
    6233223.11326109
   ],
   "end_xy": [
    390289.8191501112,
    6233223.194789134
   ]
  }
 },
 "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": 0.037,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.537,
   "obstruction_max_height_m": 22.26,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    108.0,
    119.0
   ]
  ],
  "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_E390-N6233_0m5@21LHD1FQ-2025-09-15.tif"
  ],
  "calculated_at": "2026-09-20T06:47:33+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": [
   "E390-N6233"
  ],
  "elevation_blocks": [
   "21LHD1FQ@2025-09-15"
  ],
  "ign_dalles": [
   "LHD_FXX_0390_6234_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD1FQ"
  ],
  "ign_editions": [
   "2025-09-15"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0390_6234_MNT_O_0M50_LAMB93_IGN69": "2025-09-15"
  },
  "route_summit_trim_m": 41.7,
  "route_summit_trim_loss_m": 6.3,
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 19,
   "stations_resolved": 19,
   "width_median_m": 3.5,
   "width_p10_m": 2.5,
   "width_min_m": 2.0,
   "width_max_m": 12.0,
   "bounded_share": 0.421,
   "unbounded_share": 0.579,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.25,
   "window_m": [
    234.0,
    259.0
   ],
   "width_at_max25_m": 3.5,
   "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": 19,
    "stations_resolved": 19,
    "width_median_m": 3.5,
    "width_p10_m": 1.25,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.895,
    "unbounded_share": 0.105,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.25,
    "window_m": [
     234.0,
     259.0
    ],
    "width_at_max25_m": 2.5,
    "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": "Tardets-Sorholus",
  "county": "Pyr\u00e9n\u00e9es-Atlantiques",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}