{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (42.3528, 9.1416)",
 "slug": "discovered-lane-42-3528-9-1416",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 31.076480216802338,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 972.0,
   "end_distance_m": 974.0,
   "start_elevation_m": 652.4085243328852,
   "end_elevation_m": 653.0300539372213,
   "min_gradient_pct": -3.9088967579061773
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.98983743784902,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 972.0,
   "end_distance_m": 975.0,
   "start_elevation_m": 652.4085243328852,
   "end_elevation_m": 653.2482194560207,
   "min_gradient_pct": -2.8041054455267536
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.979835958829426,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 953.0,
   "end_distance_m": 958.0,
   "start_elevation_m": 648.6282489455768,
   "end_elevation_m": 649.8772407435183,
   "min_gradient_pct": 1.024632215830934
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.22899442558173,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 965.0,
   "end_distance_m": 975.0,
   "start_elevation_m": 651.0253200134625,
   "end_elevation_m": 653.2482194560207,
   "min_gradient_pct": 2.001551984564003
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.12580354808415,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 810.0,
   "end_distance_m": 830.0,
   "start_elevation_m": 626.9865638189691,
   "end_elevation_m": 631.2117245285859,
   "min_gradient_pct": 2.6156441371699657,
   "suppressed_min_gradient_pct": 2.523273836638964,
   "suppressed_min_location_m": [
    19.0,
    39.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.78185188757334,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 803.0,
   "end_distance_m": 828.0,
   "start_elevation_m": 625.6155337358769,
   "end_elevation_m": 630.8109967077702,
   "min_gradient_pct": 2.7753252665147556,
   "suppressed_min_gradient_pct": 2.7117234482170716,
   "suppressed_min_location_m": [
    18.0,
    43.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.966298687652852,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 785.0,
   "end_distance_m": 835.0,
   "start_elevation_m": 622.1383335643638,
   "end_elevation_m": 632.1214829081903,
   "min_gradient_pct": 3.647275802491322,
   "suppressed_min_gradient_pct": 3.219500111156549,
   "suppressed_min_location_m": [
    5.0,
    55.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.182048484565144,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 731.0,
   "end_distance_m": 831.0,
   "start_elevation_m": 614.1916787044405,
   "end_elevation_m": 631.3737271890056,
   "min_gradient_pct": 4.148097090363535,
   "suppressed_min_gradient_pct": 4.123375288908505,
   "suppressed_min_location_m": [
    19.0,
    119.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.515,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 139.0,
  "shape_class": "stepped"
 },
 "length_m": 981.6633509136468,
 "start_elevation_m": 577.5640790625009,
 "end_elevation_m": 654.3326854106318,
 "endpoint_gain_m": 76.7686063481309,
 "overall_gradient_pct": 7.820257960805135,
 "accumulated_ascent_m": 77.12560593014518,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.979835958829426,
   "start_distance_m": 953.0,
   "end_distance_m": 958.0,
   "midpoint_distance_m": 955.5,
   "start_elevation_m": 648.6282489455768,
   "end_elevation_m": 649.8772407435183,
   "start_xy": [
    1206235.4729817112,
    6158844.764428848
   ],
   "end_xy": [
    1206231.338436908,
    6158841.952749765
   ]
  },
  "max_10m": {
   "gradient_pct": 22.22899442558173,
   "start_distance_m": 965.0,
   "end_distance_m": 975.0,
   "midpoint_distance_m": 970.0,
   "start_elevation_m": 651.0253200134625,
   "end_elevation_m": 653.2482194560207,
   "start_xy": [
    1206225.550074184,
    6158838.016399046
   ],
   "end_xy": [
    1206217.280984578,
    6158832.393040879
   ]
  },
  "max_20m": {
   "gradient_pct": 21.12580354808415,
   "start_distance_m": 810.0,
   "end_distance_m": 830.0,
   "midpoint_distance_m": 820.0,
   "start_elevation_m": 626.9865638189691,
   "end_elevation_m": 631.2117245285859,
   "start_xy": [
    1206317.003060584,
    6158879.964473204
   ],
   "end_xy": [
    1206328.0502979895,
    6158896.480819357
   ]
  },
  "max_25m": {
   "gradient_pct": 20.78185188757334,
   "start_distance_m": 803.0,
   "end_distance_m": 828.0,
   "midpoint_distance_m": 815.5,
   "start_elevation_m": 625.6155337358769,
   "end_elevation_m": 630.8109967077702,
   "start_xy": [
    1206313.9875449075,
    6158873.647300957
   ],
   "end_xy": [
    1206326.793443887,
    6158894.925082307
   ]
  },
  "max_50m": {
   "gradient_pct": 19.966298687652852,
   "start_distance_m": 785.0,
   "end_distance_m": 835.0,
   "midpoint_distance_m": 810.0,
   "start_elevation_m": 622.1383335643638,
   "end_elevation_m": 632.1214829081903,
   "start_xy": [
    1206308.6520609958,
    6158856.491244668
   ],
   "end_xy": [
    1206330.7979144976,
    6158900.6004722025
   ]
  },
  "max_100m": {
   "gradient_pct": 17.182048484565144,
   "start_distance_m": 731.0,
   "end_distance_m": 831.0,
   "midpoint_distance_m": 781.0,
   "start_elevation_m": 614.1916787044405,
   "end_elevation_m": 631.3737271890056,
   "start_xy": [
    1206303.3566255698,
    6158814.027862649
   ],
   "end_xy": [
    1206328.6787250408,
    6158897.258687881
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 1.024632215830934,
   "start_distance_m": 739.0,
   "end_distance_m": 744.0,
   "midpoint_distance_m": 741.5,
   "start_elevation_m": 615.4384262540875,
   "end_elevation_m": 615.4896578648791,
   "start_xy": [
    1206296.7260586815,
    6158812.547727374
   ],
   "end_xy": [
    1206297.4903876018,
    6158817.039792894
   ]
  },
  "min_10m": {
   "gradient_pct": 2.001551984564003,
   "start_distance_m": 455.0,
   "end_distance_m": 465.0,
   "midpoint_distance_m": 460.0,
   "start_elevation_m": 598.5387146924627,
   "end_elevation_m": 598.7388698909191,
   "start_xy": [
    1206495.1341129884,
    6158876.4236848345
   ],
   "end_xy": [
    1206497.5612728025,
    6158866.777664372
   ]
  },
  "min_20m": {
   "gradient_pct": 2.6156441371699657,
   "start_distance_m": 22.0,
   "end_distance_m": 42.0,
   "midpoint_distance_m": 32.0,
   "start_elevation_m": 578.4677481026525,
   "end_elevation_m": 578.9908769300865,
   "start_xy": [
    1206403.3171682623,
    6159254.444573092
   ],
   "end_xy": [
    1206404.7812334136,
    6159234.501229623
   ]
  },
  "min_25m": {
   "gradient_pct": 2.7753252665147556,
   "start_distance_m": 21.0,
   "end_distance_m": 46.0,
   "midpoint_distance_m": 33.5,
   "start_elevation_m": 578.4260234694299,
   "end_elevation_m": 579.1198547860586,
   "start_xy": [
    1206403.3102283664,
    6159255.444549011
   ],
   "end_xy": [
    1206405.0920579177,
    6159230.513324393
   ]
  },
  "min_50m": {
   "gradient_pct": 3.647275802491322,
   "start_distance_m": 21.0,
   "end_distance_m": 71.0,
   "midpoint_distance_m": 46.0,
   "start_elevation_m": 578.4260234694299,
   "end_elevation_m": 580.2496613706755,
   "start_xy": [
    1206403.3102283664,
    6159255.444549011
   ],
   "end_xy": [
    1206407.034711068,
    6159205.588916702
   ]
  },
  "min_100m": {
   "gradient_pct": 4.148097090363535,
   "start_distance_m": 23.0,
   "end_distance_m": 123.0,
   "midpoint_distance_m": 73.0,
   "start_elevation_m": 578.4894393396494,
   "end_elevation_m": 582.6375364300129,
   "start_xy": [
    1206403.3241081582,
    6159253.4445971735
   ],
   "end_xy": [
    1206403.3148504707,
    6159154.08876017
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 31.076480216802338,
   "start_distance_m": 972.0,
   "end_distance_m": 974.0,
   "midpoint_distance_m": 973.0,
   "start_elevation_m": 652.4085243328852,
   "end_elevation_m": 653.0300539372213,
   "start_xy": [
    1206219.7617114598,
    6158834.080048329
   ],
   "end_xy": [
    1206218.1078935387,
    6158832.955376696
   ]
  },
  "max_3m": {
   "gradient_pct": 27.98983743784902,
   "start_distance_m": 972.0,
   "end_distance_m": 975.0,
   "midpoint_distance_m": 973.5,
   "start_elevation_m": 652.4085243328852,
   "end_elevation_m": 653.2482194560207,
   "start_xy": [
    1206219.7617114598,
    6158834.080048329
   ],
   "end_xy": [
    1206217.280984578,
    6158832.393040879
   ]
  }
 },
 "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": 0.063,
   "windows_resited": [],
   "windows_unresolved": [],
   "minima_resited": [
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.035,
   "obstruction_max_height_m": 14.56,
   "flagged_windows_m": [
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    0.0,
    20.0
   ],
   [
    677.0,
    717.0
   ]
  ],
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "33abfff569d4360542e616d0d42c1b94d0a711fa",
   "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-co3",
   "road_pbf": "block-batch-fr-co3.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": "sha256:2a717d675f2607cc"
  },
  "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_E1206-N6158_0m5@21LHDCorseVS-2025-04-02.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1206-N6159_0m5@21LHDCorseVS-2025-04-02.tif"
  ],
  "calculated_at": "2026-09-25T00:50:44+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-co3.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-co3",
  "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": [
   "E1206-N6158",
   "E1206-N6159"
  ],
  "elevation_blocks": [
   "21LHDCorseVS@2025-04-02"
  ],
  "ign_dalles": [
   "LHD_FXX_1206_6159_MNT_O_0M50_LAMB93_IGN78",
   "LHD_FXX_1206_6160_MNT_O_0M50_LAMB93_IGN78"
  ],
  "ign_missions": [
   "21LHDCorseVS"
  ],
  "ign_editions": [
   "2025-04-02"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1206_6159_MNT_O_0M50_LAMB93_IGN78": "2025-04-02",
   "LHD_FXX_1206_6160_MNT_O_0M50_LAMB93_IGN78": "2025-04-02"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 2,
  "structure_mask_ranges_m": [
   [
    682.0,
    712.0
   ],
   [
    0.0,
    15.0
   ]
  ],
  "carriageway": {
   "stations": 46,
   "stations_resolved": 46,
   "width_median_m": 5.75,
   "width_p10_m": 2.62,
   "width_min_m": 1.0,
   "width_max_m": 9.5,
   "bounded_share": 0.565,
   "unbounded_share": 0.435,
   "confidence_median": 0.571,
   "width_median_bounded_m": 6.0,
   "window_m": [
    803.0,
    828.0
   ],
   "width_at_max25_m": 3.75,
   "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": 46,
    "stations_resolved": 46,
    "width_median_m": 6.75,
    "width_p10_m": 2.62,
    "width_min_m": 0.5,
    "width_max_m": 11.0,
    "bounded_share": 0.913,
    "unbounded_share": 0.087,
    "confidence_median": 1.0,
    "width_median_bounded_m": 6.75,
    "window_m": [
     803.0,
     828.0
    ],
    "width_at_max25_m": 5.5,
    "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": "Castirla",
  "county": "Haute-Corse",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}