{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (45.4361, 3.6461)",
 "slug": "discovered-lane-45-4361-3-6461",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.380331720956974,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 183.0,
   "end_distance_m": 185.0,
   "start_elevation_m": 813.0083226515995,
   "end_elevation_m": 813.5559292860187,
   "min_gradient_pct": -22.729895634415698,
   "suppressed_max_gradient_pct": 75.71599157555511,
   "suppressed_location_m": [
    112.0,
    114.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.209951217488044,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 182.0,
   "end_distance_m": 185.0,
   "start_elevation_m": 812.739630749494,
   "end_elevation_m": 813.5559292860187,
   "min_gradient_pct": -11.736506946889827,
   "suppressed_max_gradient_pct": 63.86866116691484,
   "suppressed_location_m": [
    111.0,
    114.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.154150362245673,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 180.0,
   "end_distance_m": 185.0,
   "start_elevation_m": 812.2982217679064,
   "end_elevation_m": 813.5559292860187,
   "min_gradient_pct": -8.879926742497446,
   "suppressed_max_gradient_pct": 53.59619015248654,
   "suppressed_location_m": [
    111.0,
    116.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.686327368056027,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 177.0,
   "end_distance_m": 187.0,
   "start_elevation_m": 811.5117078871883,
   "end_elevation_m": 813.9803406239939,
   "min_gradient_pct": 0.4810794195134349,
   "suppressed_max_gradient_pct": 35.92245447020332,
   "suppressed_location_m": [
    107.0,
    117.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.49425506040984,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 167.0,
   "end_distance_m": 187.0,
   "start_elevation_m": 809.681489611912,
   "end_elevation_m": 813.9803406239939,
   "min_gradient_pct": 2.92680712276308,
   "suppressed_max_gradient_pct": 25.51688629174805,
   "suppressed_location_m": [
    97.0,
    117.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.488071326967656,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 162.0,
   "end_distance_m": 187.0,
   "start_elevation_m": 808.858322792252,
   "end_elevation_m": 813.9803406239939,
   "min_gradient_pct": 3.24222538384538,
   "suppressed_max_gradient_pct": 23.400463542960097,
   "suppressed_location_m": [
    92.0,
    117.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.300015702678365,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 137.0,
   "end_distance_m": 187.0,
   "start_elevation_m": 804.8303327726547,
   "end_elevation_m": 813.9803406239939,
   "min_gradient_pct": 5.816592774398941
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.579854757506723,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 134.0,
   "end_distance_m": 234.0,
   "start_elevation_m": 804.4031138066049,
   "end_elevation_m": 820.9829685641116,
   "min_gradient_pct": 10.134960539702547,
   "suppressed_max_gradient_pct": 16.97113346961828,
   "suppressed_location_m": [
    87.0,
    187.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.318,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 131.0,
  "shape_class": "sustained"
 },
 "length_m": 547.9246210660289,
 "start_elevation_m": 788.8170594885283,
 "end_elevation_m": 860.8709237937036,
 "endpoint_gain_m": 72.05386430517524,
 "overall_gradient_pct": 13.150324248067003,
 "accumulated_ascent_m": 72.659755257612,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.154150362245673,
   "start_distance_m": 180.0,
   "end_distance_m": 185.0,
   "midpoint_distance_m": 182.5,
   "start_elevation_m": 812.2982217679064,
   "end_elevation_m": 813.5559292860187,
   "start_xy": [
    750641.1294347412,
    6482123.09540814
   ],
   "end_xy": [
    750636.8556585032,
    6482125.644200469
   ]
  },
  "max_10m": {
   "gradient_pct": 24.686327368056027,
   "start_distance_m": 177.0,
   "end_distance_m": 187.0,
   "midpoint_distance_m": 182.0,
   "start_elevation_m": 811.5117078871883,
   "end_elevation_m": 813.9803406239939,
   "start_xy": [
    750642.504372509,
    6482120.429034922
   ],
   "end_xy": [
    750635.1210046274,
    6482126.639678209
   ]
  },
  "max_20m": {
   "gradient_pct": 21.49425506040984,
   "start_distance_m": 167.0,
   "end_distance_m": 187.0,
   "midpoint_distance_m": 177.0,
   "start_elevation_m": 809.681489611912,
   "end_elevation_m": 813.9803406239939,
   "start_xy": [
    750645.1525863669,
    6482111.073181567
   ],
   "end_xy": [
    750635.1210046274,
    6482126.639678209
   ]
  },
  "max_25m": {
   "gradient_pct": 20.488071326967656,
   "start_distance_m": 162.0,
   "end_distance_m": 187.0,
   "midpoint_distance_m": 174.5,
   "start_elevation_m": 808.858322792252,
   "end_elevation_m": 813.9803406239939,
   "start_xy": [
    750645.144965285,
    6482106.0731873745
   ],
   "end_xy": [
    750635.1210046274,
    6482126.639678209
   ]
  },
  "max_50m": {
   "gradient_pct": 18.300015702678365,
   "start_distance_m": 137.0,
   "end_distance_m": 187.0,
   "midpoint_distance_m": 162.0,
   "start_elevation_m": 804.8303327726547,
   "end_elevation_m": 813.9803406239939,
   "start_xy": [
    750650.3757050032,
    6482083.038807192
   ],
   "end_xy": [
    750635.1210046274,
    6482126.639678209
   ]
  },
  "max_100m": {
   "gradient_pct": 16.579854757506723,
   "start_distance_m": 134.0,
   "end_distance_m": 234.0,
   "midpoint_distance_m": 184.0,
   "start_elevation_m": 804.4031138066049,
   "end_elevation_m": 820.9829685641116,
   "start_xy": [
    750652.5173640467,
    6482080.938022448
   ],
   "end_xy": [
    750592.9556548477,
    6482106.318737461
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -8.879926742497446,
   "start_distance_m": 117.0,
   "end_distance_m": 122.0,
   "midpoint_distance_m": 119.5,
   "start_elevation_m": 803.5942400725794,
   "end_elevation_m": 803.1502437354545,
   "start_xy": [
    750668.5678619283,
    6482076.3163322965
   ],
   "end_xy": [
    750663.678350791,
    6482077.361646049
   ]
  },
  "min_10m": {
   "gradient_pct": 0.4810794195134349,
   "start_distance_m": 118.0,
   "end_distance_m": 128.0,
   "midpoint_distance_m": 123.0,
   "start_elevation_m": 803.634229454408,
   "end_elevation_m": 803.6823373963593,
   "start_xy": [
    750667.5899597008,
    6482076.525395047
   ],
   "end_xy": [
    750657.8109374264,
    6482078.6160225505
   ]
  },
  "min_20m": {
   "gradient_pct": 2.92680712276308,
   "start_distance_m": 416.0,
   "end_distance_m": 436.0,
   "midpoint_distance_m": 426.0,
   "start_elevation_m": 845.3408610510776,
   "end_elevation_m": 845.9262224756302,
   "start_xy": [
    750430.5056404573,
    6482043.235266272
   ],
   "end_xy": [
    750419.7025929457,
    6482060.001845798
   ]
  },
  "min_25m": {
   "gradient_pct": 3.24222538384538,
   "start_distance_m": 411.0,
   "end_distance_m": 436.0,
   "midpoint_distance_m": 423.5,
   "start_elevation_m": 845.1156661296689,
   "end_elevation_m": 845.9262224756302,
   "start_xy": [
    750434.554153976,
    6482040.301064799
   ],
   "end_xy": [
    750419.7025929457,
    6482060.001845798
   ]
  },
  "min_50m": {
   "gradient_pct": 5.816592774398941,
   "start_distance_m": 409.0,
   "end_distance_m": 459.0,
   "midpoint_distance_m": 434.0,
   "start_elevation_m": 844.9901608687155,
   "end_elevation_m": 847.898457255915,
   "start_xy": [
    750436.1878157542,
    6482039.166334496
   ],
   "end_xy": [
    750407.5596540072,
    6482079.328525971
   ]
  },
  "min_100m": {
   "gradient_pct": 10.134960539702547,
   "start_distance_m": 397.0,
   "end_distance_m": 497.0,
   "midpoint_distance_m": 447.0,
   "start_elevation_m": 843.5511951953691,
   "end_elevation_m": 853.6861557350717,
   "start_xy": [
    750447.9520836594,
    6482040.448014995
   ],
   "end_xy": [
    750372.6676941883,
    6482088.713962623
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.380331720956974,
   "start_distance_m": 183.0,
   "end_distance_m": 185.0,
   "midpoint_distance_m": 184.0,
   "start_elevation_m": 813.0083226515995,
   "end_elevation_m": 813.5559292860187,
   "start_xy": [
    750638.5903123791,
    6482124.64872273
   ],
   "end_xy": [
    750636.8556585032,
    6482125.644200469
   ]
  },
  "max_3m": {
   "gradient_pct": 27.209951217488044,
   "start_distance_m": 182.0,
   "end_distance_m": 185.0,
   "midpoint_distance_m": 183.5,
   "start_elevation_m": 812.739630749494,
   "end_elevation_m": 813.5559292860187,
   "start_xy": [
    750639.457639317,
    6482124.15098386
   ],
   "end_xy": [
    750636.8556585032,
    6482125.644200469
   ]
  }
 },
 "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": 0.013,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    100.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.122,
   "obstruction_max_height_m": 31.89,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    110.0,
    116.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "1cc9fdcd6556a02163cb21acb2293cad3067d2a1",
   "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-mc6",
   "road_pbf": "block-batch-fr-mc6.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:af4eae1f5df9e232"
  },
  "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_E750-N6482_0m5@21LHD4MM-2025-03-12.tif"
  ],
  "calculated_at": "2026-09-22T14:43:44+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc6.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc6",
  "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": [
   "E750-N6482"
  ],
  "elevation_blocks": [
   "21LHD4MM@2025-03-12"
  ],
  "ign_dalles": [
   "LHD_FXX_0750_6483_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD4MM"
  ],
  "ign_editions": [
   "2025-03-12"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0750_6483_MNT_O_0M50_LAMB93_IGN69": "2025-03-12"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 28,
   "stations_resolved": 28,
   "width_median_m": 5.5,
   "width_p10_m": 3.75,
   "width_min_m": 1.25,
   "width_max_m": 8.75,
   "bounded_share": 0.429,
   "unbounded_share": 0.571,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.62,
   "window_m": [
    162.0,
    187.0
   ],
   "width_at_max25_m": 5.0,
   "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": 28,
    "stations_resolved": 28,
    "width_median_m": 6.0,
    "width_p10_m": 1.25,
    "width_min_m": 0.5,
    "width_max_m": 11.75,
    "bounded_share": 0.714,
    "unbounded_share": 0.286,
    "confidence_median": 1.0,
    "width_median_bounded_m": 4.75,
    "window_m": [
     162.0,
     187.0
    ],
    "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": "Novacelles",
  "county": "Puy-de-D\u00f4me",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}