{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (45.1886, 1.5654)",
 "slug": "discovered-lane-45-1886-1-5654",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.62819313579712,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 11.0,
   "end_distance_m": 13.0,
   "start_elevation_m": 137.3234403470269,
   "end_elevation_m": 137.87600420974283,
   "min_gradient_pct": -13.80070464602312
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.565403625803203,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 10.0,
   "end_distance_m": 13.0,
   "start_elevation_m": 137.07904210096873,
   "end_elevation_m": 137.87600420974283,
   "min_gradient_pct": -12.92275482054587
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.174271171744294,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 11.0,
   "end_distance_m": 16.0,
   "start_elevation_m": 137.3234403470269,
   "end_elevation_m": 138.6321539056141,
   "min_gradient_pct": -12.481943688130741
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.151546525251547,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 10.0,
   "end_distance_m": 20.0,
   "start_elevation_m": 137.07904210096873,
   "end_elevation_m": 139.5941967534939,
   "min_gradient_pct": -11.423006440913923
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.432642962434187,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 7.0,
   "end_distance_m": 27.0,
   "start_elevation_m": 136.4245986371747,
   "end_elevation_m": 141.11112722966155,
   "min_gradient_pct": -9.218406343919554
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.383039764237765,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 5.0,
   "end_distance_m": 30.0,
   "start_elevation_m": 136.05821418159255,
   "end_elevation_m": 141.653974122652,
   "min_gradient_pct": -8.144743005031273
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.751126169412828,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 7.0,
   "end_distance_m": 57.0,
   "start_elevation_m": 136.4245986371747,
   "end_elevation_m": 146.30016172188112,
   "min_gradient_pct": -5.076378043205807
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.687426724531406,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 3.0,
   "end_distance_m": 103.0,
   "start_elevation_m": 135.8364599271032,
   "end_elevation_m": 154.5238866516346,
   "min_gradient_pct": -0.1730248620374084
  }
 ],
 "shape": {
  "ascent_concentration": 0.426,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 107.0,
  "shape_class": "sustained"
 },
 "length_m": 577.4163660913783,
 "start_elevation_m": 135.6743092630614,
 "end_elevation_m": 179.46529987600064,
 "endpoint_gain_m": 43.790990612939254,
 "overall_gradient_pct": 7.583953830295341,
 "accumulated_ascent_m": 46.629957305808745,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.174271171744294,
   "start_distance_m": 11.0,
   "end_distance_m": 16.0,
   "midpoint_distance_m": 13.5,
   "start_elevation_m": 137.3234403470269,
   "end_elevation_m": 138.6321539056141,
   "start_xy": [
    587438.8124081109,
    6455378.442498719
   ],
   "end_xy": [
    587433.843380819,
    6455378.840960244
   ]
  },
  "max_10m": {
   "gradient_pct": 25.151546525251547,
   "start_distance_m": 10.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 15.0,
   "start_elevation_m": 137.07904210096873,
   "end_elevation_m": 139.5941967534939,
   "start_xy": [
    587439.80337101,
    6455378.308362472
   ],
   "end_xy": [
    587429.8452065721,
    6455378.7201186465
   ]
  },
  "max_20m": {
   "gradient_pct": 23.432642962434187,
   "start_distance_m": 7.0,
   "end_distance_m": 27.0,
   "midpoint_distance_m": 17.0,
   "start_elevation_m": 136.4245986371747,
   "end_elevation_m": 141.11112722966155,
   "start_xy": [
    587442.7762597069,
    6455377.90595373
   ],
   "end_xy": [
    587422.84840164,
    6455378.508645853
   ]
  },
  "max_25m": {
   "gradient_pct": 22.383039764237765,
   "start_distance_m": 5.0,
   "end_distance_m": 30.0,
   "midpoint_distance_m": 17.5,
   "start_elevation_m": 136.05821418159255,
   "end_elevation_m": 141.653974122652,
   "start_xy": [
    587444.7581855049,
    6455377.6376812365
   ],
   "end_xy": [
    587419.9622546464,
    6455377.738440426
   ]
  },
  "max_50m": {
   "gradient_pct": 19.751126169412828,
   "start_distance_m": 7.0,
   "end_distance_m": 57.0,
   "midpoint_distance_m": 32.0,
   "start_elevation_m": 136.4245986371747,
   "end_elevation_m": 146.30016172188112,
   "start_xy": [
    587442.7762597069,
    6455377.90595373
   ],
   "end_xy": [
    587394.1510916447,
    6455369.814813447
   ]
  },
  "max_100m": {
   "gradient_pct": 18.687426724531406,
   "start_distance_m": 3.0,
   "end_distance_m": 103.0,
   "midpoint_distance_m": 53.0,
   "start_elevation_m": 135.8364599271032,
   "end_elevation_m": 154.5238866516346,
   "start_xy": [
    587446.7401113029,
    6455377.369408742
   ],
   "end_xy": [
    587350.5459700419,
    6455360.341110942
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -12.481943688130741,
   "start_distance_m": 143.0,
   "end_distance_m": 148.0,
   "midpoint_distance_m": 145.5,
   "start_elevation_m": 154.29307836319435,
   "end_elevation_m": 153.66898117878782,
   "start_xy": [
    587346.8764922748,
    6455398.599087459
   ],
   "end_xy": [
    587348.0493328893,
    6455403.459585879
   ]
  },
  "min_10m": {
   "gradient_pct": -11.423006440913923,
   "start_distance_m": 140.0,
   "end_distance_m": 150.0,
   "midpoint_distance_m": 145.0,
   "start_elevation_m": 154.6007440342852,
   "end_elevation_m": 153.45844339019382,
   "start_xy": [
    587346.1727879061,
    6455395.6827884065
   ],
   "end_xy": [
    587348.518469135,
    6455405.403785247
   ]
  },
  "min_20m": {
   "gradient_pct": -9.218406343919554,
   "start_distance_m": 133.0,
   "end_distance_m": 153.0,
   "midpoint_distance_m": 143.0,
   "start_elevation_m": 155.0808567514791,
   "end_elevation_m": 153.2371754826952,
   "start_xy": [
    587344.5308110459,
    6455388.878090618
   ],
   "end_xy": [
    587349.2221735037,
    6455408.320084299
   ]
  },
  "min_25m": {
   "gradient_pct": -8.144743005031273,
   "start_distance_m": 131.0,
   "end_distance_m": 156.0,
   "midpoint_distance_m": 143.5,
   "start_elevation_m": 155.1695919905111,
   "end_elevation_m": 153.13340623925328,
   "start_xy": [
    587344.0616748001,
    6455386.93389125
   ],
   "end_xy": [
    587349.7331084498,
    6455411.263434727
   ]
  },
  "min_50m": {
   "gradient_pct": -5.076378043205807,
   "start_distance_m": 114.0,
   "end_distance_m": 164.0,
   "midpoint_distance_m": 139.0,
   "start_elevation_m": 155.43404388397585,
   "end_elevation_m": 152.89585486237294,
   "start_xy": [
    587346.140100114,
    6455370.090036789
   ],
   "end_xy": [
    587350.0695317985,
    6455419.256357805
   ]
  },
  "min_100m": {
   "gradient_pct": -0.1730248620374084,
   "start_distance_m": 114.0,
   "end_distance_m": 214.0,
   "midpoint_distance_m": 164.0,
   "start_elevation_m": 155.43404388397585,
   "end_elevation_m": 155.26101902193844,
   "start_xy": [
    587346.140100114,
    6455370.090036789
   ],
   "end_xy": [
    587335.9282790298,
    6455466.114207279
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.62819313579712,
   "start_distance_m": 11.0,
   "end_distance_m": 13.0,
   "midpoint_distance_m": 12.0,
   "start_elevation_m": 137.3234403470269,
   "end_elevation_m": 137.87600420974283,
   "start_xy": [
    587438.8124081109,
    6455378.442498719
   ],
   "end_xy": [
    587436.830482313,
    6455378.710771213
   ]
  },
  "max_3m": {
   "gradient_pct": 26.565403625803203,
   "start_distance_m": 10.0,
   "end_distance_m": 13.0,
   "midpoint_distance_m": 11.5,
   "start_elevation_m": 137.07904210096873,
   "end_elevation_m": 137.87600420974283,
   "start_xy": [
    587439.80337101,
    6455378.308362472
   ],
   "end_xy": [
    587436.830482313,
    6455378.710771213
   ]
  }
 },
 "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": 0.178,
   "obstruction_max_height_m": 20.79,
   "flagged_windows_m": [
    100
   ]
  },
  "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-mc1",
   "road_pbf": "block-batch-fr-mc1.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_E587-N6455_0m5@22LHD3JM-2025-05-14.tif"
  ],
  "calculated_at": "2026-09-22T16:59:13+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc1.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc1",
  "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": [
   "E587-N6455"
  ],
  "elevation_blocks": [
   "22LHD3JM@2025-05-14"
  ],
  "ign_dalles": [
   "LHD_FXX_0587_6456_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD3JM"
  ],
  "ign_editions": [
   "2025-05-14"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0587_6456_MNT_O_0M50_LAMB93_IGN69": "2025-05-14"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 2,
  "carriageway": {
   "stations": 29,
   "stations_resolved": 29,
   "width_median_m": 7.0,
   "width_p10_m": 4.3,
   "width_min_m": 2.0,
   "width_max_m": 11.0,
   "bounded_share": 0.103,
   "unbounded_share": 0.897,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.0,
   "window_m": [
    5.0,
    30.0
   ],
   "width_at_max25_m": 6.38,
   "window_stations": 6,
   "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": 29,
    "stations_resolved": 29,
    "width_median_m": 9.25,
    "width_p10_m": 0.7,
    "width_min_m": 0.0,
    "width_max_m": 12.0,
    "bounded_share": 0.517,
    "unbounded_share": 0.483,
    "confidence_median": 0.89,
    "width_median_bounded_m": 4.75,
    "window_m": [
     5.0,
     30.0
    ],
    "width_at_max25_m": 7.62,
    "window_stations": 6,
    "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": "Malemort",
  "county": "Corr\u00e8ze",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}