{
 "ocl_version": "0.1.0",
 "name": "Route des Quatre Vents",
 "slug": "route-des-quatre-vents",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.78711652547736,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1651.0,
   "end_distance_m": 1653.0,
   "start_elevation_m": 754.5669483143535,
   "end_elevation_m": 755.042690644863,
   "min_gradient_pct": -6.873561499361358
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.071503530130183,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1652.0,
   "end_distance_m": 1655.0,
   "start_elevation_m": 754.7931797007341,
   "end_elevation_m": 755.515324806638,
   "min_gradient_pct": -6.714886900003118
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.669182287158037,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1650.0,
   "end_distance_m": 1655.0,
   "start_elevation_m": 754.3318656922801,
   "end_elevation_m": 755.515324806638,
   "min_gradient_pct": -6.257414818564939
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.930472511561675,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1648.0,
   "end_distance_m": 1658.0,
   "start_elevation_m": 753.8785297763193,
   "end_elevation_m": 756.1715770274755,
   "min_gradient_pct": -5.991083629274954
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.557001269102557,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1646.0,
   "end_distance_m": 1666.0,
   "start_elevation_m": 753.4344000405154,
   "end_elevation_m": 757.9458002943359,
   "min_gradient_pct": -5.408947353533904
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.11648450552002,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1641.0,
   "end_distance_m": 1666.0,
   "start_elevation_m": 752.4166791679559,
   "end_elevation_m": 757.9458002943359,
   "min_gradient_pct": -4.7056216839632725
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.723436848016945,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1635.0,
   "end_distance_m": 1685.0,
   "start_elevation_m": 751.3432998858178,
   "end_elevation_m": 761.2050183098263,
   "min_gradient_pct": -2.769266081463229
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.498508268345404,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1646.0,
   "end_distance_m": 1746.0,
   "start_elevation_m": 753.4344000405154,
   "end_elevation_m": 771.9329083088608,
   "min_gradient_pct": -1.5014809232217203
  }
 ],
 "shape": {
  "ascent_concentration": 0.274,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 190.0,
  "shape_class": "sustained"
 },
 "length_m": 1849.7250906855752,
 "start_elevation_m": 628.0546732128452,
 "end_elevation_m": 783.5785051035065,
 "endpoint_gain_m": 155.5238318906613,
 "overall_gradient_pct": 8.40794303293029,
 "accumulated_ascent_m": 158.7453312333124,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.669182287158037,
   "start_distance_m": 1650.0,
   "end_distance_m": 1655.0,
   "midpoint_distance_m": 1652.5,
   "start_elevation_m": 754.3318656922801,
   "end_elevation_m": 755.515324806638,
   "start_xy": [
    987763.080437493,
    6761747.842330327
   ],
   "end_xy": [
    987761.5019840375,
    6761752.586641097
   ]
  },
  "max_10m": {
   "gradient_pct": 22.930472511561675,
   "start_distance_m": 1648.0,
   "end_distance_m": 1658.0,
   "midpoint_distance_m": 1653.0,
   "start_elevation_m": 753.8785297763193,
   "end_elevation_m": 756.1715770274755,
   "start_xy": [
    987763.7118188753,
    6761745.944606018
   ],
   "end_xy": [
    987760.5549119641,
    6761755.43322756
   ]
  },
  "max_20m": {
   "gradient_pct": 22.557001269102557,
   "start_distance_m": 1646.0,
   "end_distance_m": 1666.0,
   "midpoint_distance_m": 1656.0,
   "start_elevation_m": 753.4344000405154,
   "end_elevation_m": 757.9458002943359,
   "start_xy": [
    987764.3432002575,
    6761744.04688171
   ],
   "end_xy": [
    987758.0293864353,
    6761763.024124793
   ]
  },
  "max_25m": {
   "gradient_pct": 22.11648450552002,
   "start_distance_m": 1641.0,
   "end_distance_m": 1666.0,
   "midpoint_distance_m": 1653.5,
   "start_elevation_m": 752.4166791679559,
   "end_elevation_m": 757.9458002943359,
   "start_xy": [
    987765.2656484338,
    6761739.150450795
   ],
   "end_xy": [
    987758.0293864353,
    6761763.024124793
   ]
  },
  "max_50m": {
   "gradient_pct": 19.723436848016945,
   "start_distance_m": 1635.0,
   "end_distance_m": 1685.0,
   "midpoint_distance_m": 1660.0,
   "start_elevation_m": 751.3432998858178,
   "end_elevation_m": 761.2050183098263,
   "start_xy": [
    987766.0704448269,
    6761733.204670547
   ],
   "end_xy": [
    987750.126322061,
    6761780.272282783
   ]
  },
  "max_100m": {
   "gradient_pct": 18.498508268345404,
   "start_distance_m": 1646.0,
   "end_distance_m": 1746.0,
   "midpoint_distance_m": 1696.0,
   "start_elevation_m": 753.4344000405154,
   "end_elevation_m": 771.9329083088608,
   "start_xy": [
    987764.3432002575,
    6761744.04688171
   ],
   "end_xy": [
    987738.6201196625,
    6761838.887741877
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -6.257414818564939,
   "start_distance_m": 1441.0,
   "end_distance_m": 1446.0,
   "midpoint_distance_m": 1443.5,
   "start_elevation_m": 748.2853215029306,
   "end_elevation_m": 747.9724507620024,
   "start_xy": [
    987709.9404189137,
    6761551.965799526
   ],
   "end_xy": [
    987711.7578724638,
    6761556.614959252
   ]
  },
  "min_10m": {
   "gradient_pct": -5.991083629274954,
   "start_distance_m": 1436.0,
   "end_distance_m": 1446.0,
   "midpoint_distance_m": 1441.0,
   "start_elevation_m": 748.5715591249299,
   "end_elevation_m": 747.9724507620024,
   "start_xy": [
    987707.819920989,
    6761547.437721727
   ],
   "end_xy": [
    987711.7578724638,
    6761556.614959252
   ]
  },
  "min_20m": {
   "gradient_pct": -5.408947353533904,
   "start_distance_m": 1432.0,
   "end_distance_m": 1452.0,
   "midpoint_distance_m": 1442.0,
   "start_elevation_m": 748.7232816348226,
   "end_elevation_m": 747.6414921641158,
   "start_xy": [
    987706.1235226492,
    6761543.815259488
   ],
   "end_xy": [
    987713.6582097072,
    6761562.306067963
   ]
  },
  "min_25m": {
   "gradient_pct": -4.7056216839632725,
   "start_distance_m": 1429.0,
   "end_distance_m": 1454.0,
   "midpoint_distance_m": 1441.5,
   "start_elevation_m": 748.7821509979492,
   "end_elevation_m": 747.6057455769584,
   "start_xy": [
    987704.8512238943,
    6761541.098412809
   ],
   "end_xy": [
    987714.291655455,
    6761564.2031042
   ]
  },
  "min_50m": {
   "gradient_pct": -2.769266081463229,
   "start_distance_m": 1429.0,
   "end_distance_m": 1479.0,
   "midpoint_distance_m": 1454.0,
   "start_elevation_m": 748.7821509979492,
   "end_elevation_m": 747.3975179572176,
   "start_xy": [
    987704.8512238943,
    6761541.098412809
   ],
   "end_xy": [
    987720.0111550073,
    6761588.439810361
   ]
  },
  "min_100m": {
   "gradient_pct": -1.5014809232217203,
   "start_distance_m": 1410.0,
   "end_distance_m": 1510.0,
   "midpoint_distance_m": 1460.0,
   "start_elevation_m": 748.6118200008615,
   "end_elevation_m": 747.1103390776398,
   "start_xy": [
    987702.5507433788,
    6761522.676626772
   ],
   "end_xy": [
    987727.1217846862,
    6761618.348936211
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.78711652547736,
   "start_distance_m": 1651.0,
   "end_distance_m": 1653.0,
   "midpoint_distance_m": 1652.0,
   "start_elevation_m": 754.5669483143535,
   "end_elevation_m": 755.042690644863,
   "start_xy": [
    987762.7647468019,
    6761748.791192481
   ],
   "end_xy": [
    987762.1333654197,
    6761750.688916789
   ]
  },
  "max_3m": {
   "gradient_pct": 24.071503530130183,
   "start_distance_m": 1652.0,
   "end_distance_m": 1655.0,
   "midpoint_distance_m": 1653.5,
   "start_elevation_m": 754.7931797007341,
   "end_elevation_m": 755.515324806638,
   "start_xy": [
    987762.4490561108,
    6761749.740054635
   ],
   "end_xy": [
    987761.5019840375,
    6761752.586641097
   ]
  }
 },
 "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": 0.079,
   "obstruction_max_height_m": 19.87,
   "flagged_windows_m": [
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "686aca469eafb5c6deda431acc2396d659a613ab",
   "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-vosges",
   "road_pbf": "block-batch-fr-vosges.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": "sha256:3827be8f439ab5f4"
  },
  "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_E987-N6761_0m5@22LHDVosgesRG-2024-12-20.tif"
  ],
  "calculated_at": "2026-09-19T23:21:21+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-vosges.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-vosges",
  "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": [
   "E987-N6761"
  ],
  "elevation_blocks": [
   "22LHDVosgesRG@2024-12-20"
  ],
  "ign_dalles": [
   "LHD_FXX_0987_6762_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHDVosgesRG"
  ],
  "ign_editions": [
   "2024-12-20"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0987_6762_MNT_O_0M50_LAMB93_IGN69": "2024-12-20"
  },
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 80,
   "stations_resolved": 80,
   "width_median_m": 5.0,
   "width_p10_m": 3.75,
   "width_min_m": 1.75,
   "width_max_m": 9.75,
   "bounded_share": 0.613,
   "unbounded_share": 0.387,
   "confidence_median": 0.623,
   "width_median_bounded_m": 5.25,
   "window_m": [
    1641.0,
    1666.0
   ],
   "width_at_max25_m": 4.25,
   "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": 80,
    "stations_resolved": 80,
    "width_median_m": 5.75,
    "width_p10_m": 1.7,
    "width_min_m": 0.5,
    "width_max_m": 11.5,
    "bounded_share": 0.912,
    "unbounded_share": 0.088,
    "confidence_median": 1.0,
    "width_median_bounded_m": 5.5,
    "window_m": [
     1641.0,
     1666.0
    ],
    "width_at_max25_m": 5.0,
    "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": "Bussang",
  "county": "Vosges",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}