{
 "ocl_version": "0.1.0",
 "name": "Lane near Pigres",
 "slug": "discovered-lane-44-1431-0-6081",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.191236369011193,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 62.0,
   "end_distance_m": 64.0,
   "start_elevation_m": 117.34130503370223,
   "end_elevation_m": 117.82512976108245,
   "min_gradient_pct": 4.998524801728621
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.275932877924294,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 62.0,
   "end_distance_m": 65.0,
   "start_elevation_m": 117.34130503370223,
   "end_elevation_m": 118.03958302003996,
   "min_gradient_pct": 6.737513405388047
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.069785735277208,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 61.0,
   "end_distance_m": 66.0,
   "start_elevation_m": 117.15054032122842,
   "end_elevation_m": 118.25402960799228,
   "min_gradient_pct": 8.891788704613077
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.88521388461018,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 56.0,
   "end_distance_m": 66.0,
   "start_elevation_m": 116.16550821953126,
   "end_elevation_m": 118.25402960799228,
   "min_gradient_pct": 10.570677083146052
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.644454208666048,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 102.0,
   "end_distance_m": 122.0,
   "start_elevation_m": 123.72511587901496,
   "end_elevation_m": 127.85400672074817,
   "min_gradient_pct": 11.225617564759744
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.14791051857526,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 98.0,
   "end_distance_m": 123.0,
   "start_elevation_m": 123.03055862406748,
   "end_elevation_m": 128.0675362537113,
   "min_gradient_pct": 11.614489220551604
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.673916191246917,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 84.0,
   "end_distance_m": 134.0,
   "start_elevation_m": 120.5823429264052,
   "end_elevation_m": 129.91930102202866,
   "min_gradient_pct": 12.89783834862834
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.19438873130281,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 47.0,
   "end_distance_m": 147.0,
   "start_elevation_m": 114.66722613777728,
   "end_elevation_m": 131.86161486908009,
   "min_gradient_pct": 13.959891549268063
  }
 ],
 "shape": {
  "ascent_concentration": 0.302,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 236.0,
  "shape_class": "sustained"
 },
 "length_m": 236.79269778248184,
 "start_elevation_m": 108.68397679991646,
 "end_elevation_m": 144.23977619287223,
 "endpoint_gain_m": 35.55579939295576,
 "overall_gradient_pct": 15.015581023371498,
 "accumulated_ascent_m": 35.55579939295576,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.069785735277208,
   "start_distance_m": 61.0,
   "end_distance_m": 66.0,
   "midpoint_distance_m": 63.5,
   "start_elevation_m": 117.15054032122842,
   "end_elevation_m": 118.25402960799228,
   "start_xy": [
    508604.71620603895,
    6341148.074951612
   ],
   "end_xy": [
    508609.3631863675,
    6341146.229531924
   ]
  },
  "max_10m": {
   "gradient_pct": 20.88521388461018,
   "start_distance_m": 56.0,
   "end_distance_m": 66.0,
   "midpoint_distance_m": 61.0,
   "start_elevation_m": 116.16550821953126,
   "end_elevation_m": 118.25402960799228,
   "start_xy": [
    508600.0692257104,
    6341149.920371301
   ],
   "end_xy": [
    508609.3631863675,
    6341146.229531924
   ]
  },
  "max_20m": {
   "gradient_pct": 20.644454208666048,
   "start_distance_m": 102.0,
   "end_distance_m": 122.0,
   "midpoint_distance_m": 112.0,
   "start_elevation_m": 123.72511587901496,
   "end_elevation_m": 127.85400672074817,
   "start_xy": [
    508643.11940262216,
    6341133.72389705
   ],
   "end_xy": [
    508662.8186041951,
    6341131.1514289975
   ]
  },
  "max_25m": {
   "gradient_pct": 20.14791051857526,
   "start_distance_m": 98.0,
   "end_distance_m": 123.0,
   "midpoint_distance_m": 110.5,
   "start_elevation_m": 123.03055862406748,
   "end_elevation_m": 128.0675362537113,
   "start_xy": [
    508639.36270170985,
    6341135.097650397
   ],
   "end_xy": [
    508663.81818571297,
    6341131.180356305
   ]
  },
  "max_50m": {
   "gradient_pct": 18.673916191246917,
   "start_distance_m": 84.0,
   "end_distance_m": 134.0,
   "midpoint_distance_m": 109.0,
   "start_elevation_m": 120.5823429264052,
   "end_elevation_m": 129.91930102202866,
   "start_xy": [
    508626.2142485168,
    6341139.905787108
   ],
   "end_xy": [
    508674.4882719045,
    6341133.221786207
   ]
  },
  "max_100m": {
   "gradient_pct": 17.19438873130281,
   "start_distance_m": 47.0,
   "end_distance_m": 147.0,
   "midpoint_distance_m": 97.0,
   "start_elevation_m": 114.66722613777728,
   "end_elevation_m": 131.86161486908009,
   "start_xy": [
    508591.70466111903,
    6341153.24212674
   ],
   "end_xy": [
    508686.7256073849,
    6341137.608997205
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 8.891788704613077,
   "start_distance_m": 24.0,
   "end_distance_m": 29.0,
   "midpoint_distance_m": 26.5,
   "start_elevation_m": 111.65422291813618,
   "end_elevation_m": 112.09881235336684,
   "start_xy": [
    508570.17375237483,
    6341161.220047447
   ],
   "end_xy": [
    508574.9755319363,
    6341159.885637618
   ]
  },
  "min_10m": {
   "gradient_pct": 10.570677083146052,
   "start_distance_m": 19.0,
   "end_distance_m": 29.0,
   "midpoint_distance_m": 24.0,
   "start_elevation_m": 111.04174464505223,
   "end_elevation_m": 112.09881235336684,
   "start_xy": [
    508565.2641094474,
    6341162.120569658
   ],
   "end_xy": [
    508574.9755319363,
    6341159.885637618
   ]
  },
  "min_20m": {
   "gradient_pct": 11.225617564759744,
   "start_distance_m": 11.0,
   "end_distance_m": 31.0,
   "midpoint_distance_m": 21.0,
   "start_elevation_m": 110.09936677046363,
   "end_elevation_m": 112.34449028341558,
   "start_xy": [
    508557.2812836233,
    6341162.64426936
   ],
   "end_xy": [
    508576.8343240677,
    6341159.147469742
   ]
  },
  "min_25m": {
   "gradient_pct": 11.614489220551604,
   "start_distance_m": 4.0,
   "end_distance_m": 29.0,
   "midpoint_distance_m": 16.5,
   "start_elevation_m": 109.19519004822894,
   "end_elevation_m": 112.09881235336684,
   "start_xy": [
    508550.2976485903,
    6341163.122643404
   ],
   "end_xy": [
    508574.9755319363,
    6341159.885637618
   ]
  },
  "min_50m": {
   "gradient_pct": 12.89783834862834,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 108.68397679991646,
   "end_elevation_m": 115.13289597423064,
   "start_xy": [
    508546.307,
    6341163.396
   ],
   "end_xy": [
    508594.49284931616,
    6341152.134874927
   ]
  },
  "min_100m": {
   "gradient_pct": 13.959891549268063,
   "start_distance_m": 136.0,
   "end_distance_m": 236.0,
   "midpoint_distance_m": 186.0,
   "start_elevation_m": 130.24532397802713,
   "end_elevation_m": 144.2052155272952,
   "start_xy": [
    508676.3709389015,
    6341133.896741745
   ],
   "end_xy": [
    508767.4348692351,
    6341170.560158736
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.191236369011193,
   "start_distance_m": 62.0,
   "end_distance_m": 64.0,
   "midpoint_distance_m": 63.0,
   "start_elevation_m": 117.34130503370223,
   "end_elevation_m": 117.82512976108245,
   "start_xy": [
    508605.64560210466,
    6341147.705867675
   ],
   "end_xy": [
    508607.5043942361,
    6341146.9676998
   ]
  },
  "max_3m": {
   "gradient_pct": 23.275932877924294,
   "start_distance_m": 62.0,
   "end_distance_m": 65.0,
   "midpoint_distance_m": 63.5,
   "start_elevation_m": 117.34130503370223,
   "end_elevation_m": 118.03958302003996,
   "start_xy": [
    508605.64560210466,
    6341147.705867675
   ],
   "end_xy": [
    508608.4337903018,
    6341146.5986158615
   ]
  }
 },
 "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": 0.429,
   "obstruction_max_height_m": 20.52,
   "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": "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-so5",
   "road_pbf": "block-batch-fr-so5.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_E508-N6341_0m5@21LHD2HO-2025-02-20.tif"
  ],
  "calculated_at": "2026-09-27T04:58:55+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-so5.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-so5",
  "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": [
   "E508-N6341"
  ],
  "elevation_blocks": [
   "21LHD2HO@2025-02-20"
  ],
  "ign_dalles": [
   "LHD_FXX_0508_6342_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD2HO"
  ],
  "ign_editions": [
   "2025-02-20"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0508_6342_MNT_O_0M50_LAMB93_IGN69": "2025-02-20"
  },
  "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": 16,
   "stations_resolved": 16,
   "width_median_m": 4.38,
   "width_p10_m": 4.12,
   "width_min_m": 3.75,
   "width_max_m": 8.25,
   "bounded_share": 0.562,
   "unbounded_share": 0.438,
   "confidence_median": 0.518,
   "width_median_bounded_m": 4.25,
   "window_m": [
    98.0,
    123.0
   ],
   "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": 16,
    "stations_resolved": 16,
    "width_median_m": 4.88,
    "width_p10_m": 1.12,
    "width_min_m": 0.5,
    "width_max_m": 9.25,
    "bounded_share": 0.75,
    "unbounded_share": 0.25,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.5,
    "window_m": [
     98.0,
     123.0
    ],
    "width_at_max25_m": 4.5,
    "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": "Moirax",
  "county": "Lot-et-Garonne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}