{
 "ocl_version": "0.1.0",
 "name": "Chemin de P\u00e9loubet",
 "slug": "chemin-de-peloubet",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 36.80207074412607,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 150.0,
   "end_distance_m": 152.0,
   "start_elevation_m": 135.90068292631815,
   "end_elevation_m": 136.63672434120068,
   "min_gradient_pct": -3.8265675450418257
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 31.430914236161318,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 149.0,
   "end_distance_m": 152.0,
   "start_elevation_m": 135.69379691411584,
   "end_elevation_m": 136.63672434120068,
   "min_gradient_pct": -3.4205757069713627
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.021154327766,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 147.0,
   "end_distance_m": 152.0,
   "start_elevation_m": 135.33566662481238,
   "end_elevation_m": 136.63672434120068,
   "min_gradient_pct": -2.977895154708108
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.26693617171793,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 111.0,
   "end_distance_m": 121.0,
   "start_elevation_m": 127.91222998216259,
   "end_elevation_m": 130.33892359933438,
   "min_gradient_pct": -2.2088115407075293
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.417431940352856,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 105.0,
   "end_distance_m": 125.0,
   "start_elevation_m": 126.79211759076742,
   "end_elevation_m": 131.075603978838,
   "min_gradient_pct": -1.2541961506468624
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.57115799563735,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 112.0,
   "end_distance_m": 137.0,
   "start_elevation_m": 128.13835054096478,
   "end_elevation_m": 133.53114003987412,
   "min_gradient_pct": -0.9700459813843736
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.816741926118365,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 103.0,
   "end_distance_m": 153.0,
   "start_elevation_m": 126.40384276632764,
   "end_elevation_m": 136.81221372938683,
   "min_gradient_pct": -0.4340427239454243
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.314548959885883,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 55.0,
   "end_distance_m": 155.0,
   "start_elevation_m": 117.83484634482926,
   "end_elevation_m": 137.14939530471514,
   "min_gradient_pct": 1.3969726139575869
  }
 ],
 "shape": {
  "ascent_concentration": 0.47,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 159.0,
  "shape_class": "stepped"
 },
 "length_m": 339.12044464242535,
 "start_elevation_m": 111.42681200898824,
 "end_elevation_m": 146.6561317274809,
 "endpoint_gain_m": 35.22931971849266,
 "overall_gradient_pct": 10.388438761231008,
 "accumulated_ascent_m": 35.83850185068292,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.021154327766,
   "start_distance_m": 147.0,
   "end_distance_m": 152.0,
   "midpoint_distance_m": 149.5,
   "start_elevation_m": 135.33566662481238,
   "end_elevation_m": 136.63672434120068,
   "start_xy": [
    527373.7260172851,
    6396677.532528707
   ],
   "end_xy": [
    527368.8241756981,
    6396676.546653939
   ]
  },
  "max_10m": {
   "gradient_pct": 24.26693617171793,
   "start_distance_m": 111.0,
   "end_distance_m": 121.0,
   "midpoint_distance_m": 116.0,
   "start_elevation_m": 127.91222998216259,
   "end_elevation_m": 130.33892359933438,
   "start_xy": [
    527404.4989297851,
    6396690.599774755
   ],
   "end_xy": [
    527399.3203433531,
    6396682.095253875
   ]
  },
  "max_20m": {
   "gradient_pct": 21.417431940352856,
   "start_distance_m": 105.0,
   "end_distance_m": 125.0,
   "midpoint_distance_m": 115.0,
   "start_elevation_m": 126.79211759076742,
   "end_elevation_m": 131.075603978838,
   "start_xy": [
    527407.5710009745,
    6396695.75364501
   ],
   "end_xy": [
    527395.3772658769,
    6396681.422840299
   ]
  },
  "max_25m": {
   "gradient_pct": 21.57115799563735,
   "start_distance_m": 112.0,
   "end_distance_m": 137.0,
   "midpoint_distance_m": 124.5,
   "start_elevation_m": 128.13835054096478,
   "end_elevation_m": 133.53114003987412,
   "start_xy": [
    527403.9869179202,
    6396689.740796379
   ],
   "end_xy": [
    527383.5480334485,
    6396679.405599571
   ]
  },
  "max_50m": {
   "gradient_pct": 20.816741926118365,
   "start_distance_m": 103.0,
   "end_distance_m": 153.0,
   "midpoint_distance_m": 128.0,
   "start_elevation_m": 126.40384276632764,
   "end_elevation_m": 136.81221372938683,
   "start_xy": [
    527408.5950247044,
    6396697.471601762
   ],
   "end_xy": [
    527367.8438073808,
    6396676.349478986
   ]
  },
  "max_100m": {
   "gradient_pct": 19.314548959885883,
   "start_distance_m": 55.0,
   "end_distance_m": 155.0,
   "midpoint_distance_m": 105.0,
   "start_elevation_m": 117.83484634482926,
   "end_elevation_m": 137.14939530471514,
   "start_xy": [
    527429.0682904137,
    6396740.806935765
   ],
   "end_xy": [
    527365.883070746,
    6396675.9551290795
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.977895154708108,
   "start_distance_m": 276.0,
   "end_distance_m": 281.0,
   "midpoint_distance_m": 278.5,
   "start_elevation_m": 146.7673037915203,
   "end_elevation_m": 146.6184090337849,
   "start_xy": [
    527356.4086842798,
    6396573.725725534
   ],
   "end_xy": [
    527357.784808594,
    6396568.918826132
   ]
  },
  "min_10m": {
   "gradient_pct": -2.2088115407075293,
   "start_distance_m": 274.0,
   "end_distance_m": 284.0,
   "midpoint_distance_m": 279.0,
   "start_elevation_m": 146.79369028698477,
   "end_elevation_m": 146.57280913291402,
   "start_xy": [
    527355.8582345541,
    6396575.648485296
   ],
   "end_xy": [
    527358.6104831826,
    6396566.03468649
   ]
  },
  "min_20m": {
   "gradient_pct": -1.2541961506468624,
   "start_distance_m": 270.0,
   "end_distance_m": 290.0,
   "midpoint_distance_m": 280.0,
   "start_elevation_m": 146.81074575892086,
   "end_elevation_m": 146.5599065287915,
   "start_xy": [
    527354.7573351027,
    6396579.494004819
   ],
   "end_xy": [
    527360.2618323597,
    6396560.266407206
   ]
  },
  "min_25m": {
   "gradient_pct": -0.9700459813843736,
   "start_distance_m": 269.0,
   "end_distance_m": 294.0,
   "midpoint_distance_m": 281.5,
   "start_elevation_m": 146.81326603949256,
   "end_elevation_m": 146.57075454414647,
   "start_xy": [
    527354.4821102398,
    6396580.455384699
   ],
   "end_xy": [
    527361.3627318112,
    6396556.4208876835
   ]
  },
  "min_50m": {
   "gradient_pct": -0.4340427239454243,
   "start_distance_m": 275.0,
   "end_distance_m": 325.0,
   "midpoint_distance_m": 300.0,
   "start_elevation_m": 146.78580908858774,
   "end_elevation_m": 146.56878772661503,
   "start_xy": [
    527356.1334594169,
    6396574.687105415
   ],
   "end_xy": [
    527369.8947025598,
    6396526.618111384
   ]
  },
  "min_100m": {
   "gradient_pct": 1.3969726139575869,
   "start_distance_m": 239.0,
   "end_distance_m": 339.0,
   "midpoint_distance_m": 289.0,
   "start_elevation_m": 145.25800471972053,
   "end_elevation_m": 146.65497733367812,
   "start_xy": [
    527347.357619064,
    6396609.590046216
   ],
   "end_xy": [
    527373.7478506397,
    6396513.158793055
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 36.80207074412607,
   "start_distance_m": 150.0,
   "end_distance_m": 152.0,
   "midpoint_distance_m": 151.0,
   "start_elevation_m": 135.90068292631815,
   "end_elevation_m": 136.63672434120068,
   "start_xy": [
    527370.7849123329,
    6396676.941003846
   ],
   "end_xy": [
    527368.8241756981,
    6396676.546653939
   ]
  },
  "max_3m": {
   "gradient_pct": 31.430914236161318,
   "start_distance_m": 149.0,
   "end_distance_m": 152.0,
   "midpoint_distance_m": 150.5,
   "start_elevation_m": 135.69379691411584,
   "end_elevation_m": 136.63672434120068,
   "start_xy": [
    527371.7652806503,
    6396677.1381788
   ],
   "end_xy": [
    527368.8241756981,
    6396676.546653939
   ]
  }
 },
 "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": 0.349,
   "obstruction_max_height_m": 18.33,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "16bcc1553fe58b280e0c4a66a3ab0980530490a6",
   "code_git_dirty": "false",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:8c94015b54267da4",
   "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-so6",
   "road_pbf": "block-batch-fr-so6.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": "sha256:18f786cf9fa98070"
  },
  "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_E527-N6396_0m5@21LHD2HN-2025-06-11.tif"
  ],
  "calculated_at": "2026-09-27T04:53:10+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-so6.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-so6",
  "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": [
   "E527-N6396"
  ],
  "elevation_blocks": [
   "21LHD2HN@2025-06-11"
  ],
  "ign_dalles": [
   "LHD_FXX_0527_6397_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD2HN"
  ],
  "ign_editions": [
   "2025-06-11"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0527_6397_MNT_O_0M50_LAMB93_IGN69": "2025-06-11"
  },
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": "none \u2014 the route carried no way list and no mapped way runs along it; own decks unmasked",
  "carriageway": {
   "stations": 20,
   "stations_resolved": 20,
   "width_median_m": 4.5,
   "width_p10_m": 1.25,
   "width_min_m": 1.0,
   "width_max_m": 12.0,
   "bounded_share": 0.15,
   "unbounded_share": 0.85,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.0,
   "window_m": [
    112.0,
    137.0
   ],
   "width_at_max25_m": 2.0,
   "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": 20,
    "stations_resolved": 20,
    "width_median_m": 3.75,
    "width_p10_m": 0.73,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.8,
    "unbounded_share": 0.2,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.12,
    "window_m": [
     112.0,
     137.0
    ],
    "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": "Saint-Martin-de-Viller\u00e9al",
  "county": "Lot-et-Garonne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}