{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (43.0432, 2.2167)",
 "slug": "discovered-lane-43-0432-2-2167",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 32.57082485621652,
   "diagnostic": true,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 156.0,
   "end_distance_m": 158.0,
   "start_elevation_m": 214.40033548170243,
   "end_elevation_m": 215.05175197882676,
   "min_gradient_pct": -20.87251779431938,
   "suppressed_max_gradient_pct": 38.410635842421925,
   "suppressed_location_m": [
    469.0,
    471.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 29.244763336873802,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "texture_excluded_min"
   ],
   "start_distance_m": 155.0,
   "end_distance_m": 158.0,
   "start_elevation_m": 214.17440907872054,
   "end_elevation_m": 215.05175197882676,
   "min_gradient_pct": -12.131401173987419,
   "suppressed_max_gradient_pct": 31.66444551995558,
   "suppressed_location_m": [
    469.0,
    472.0
   ],
   "suppressed_min_gradient_pct": -16.61125826712843,
   "suppressed_min_location_m": [
    475.0,
    478.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.214852374723478,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 365.0,
   "end_distance_m": 370.0,
   "start_elevation_m": 246.28432215477528,
   "end_elevation_m": 247.54506477351146,
   "min_gradient_pct": -3.751126146134993,
   "suppressed_max_gradient_pct": 26.53330419152553,
   "suppressed_location_m": [
    468.0,
    473.0
   ],
   "suppressed_min_gradient_pct": -11.75518036048743,
   "suppressed_min_location_m": [
    473.0,
    478.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.5136962580861,
   "diagnostic": false,
   "flags": [
    "texture_excluded_min"
   ],
   "start_distance_m": 365.0,
   "end_distance_m": 375.0,
   "start_elevation_m": 246.28432215477528,
   "end_elevation_m": 248.7356917805839,
   "min_gradient_pct": 1.0972052370107122,
   "suppressed_min_gradient_pct": -1.0934018248252642,
   "suppressed_min_location_m": [
    473.0,
    483.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.554206765032433,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 361.0,
   "end_distance_m": 381.0,
   "start_elevation_m": 245.39381292498976,
   "end_elevation_m": 250.10465427799625,
   "min_gradient_pct": 1.2871492721920674
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.287505509469383,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 356.0,
   "end_distance_m": 381.0,
   "start_elevation_m": 244.2827779006289,
   "end_elevation_m": 250.10465427799625,
   "min_gradient_pct": 1.3937264720894973
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.887159942032554,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 335.0,
   "end_distance_m": 385.0,
   "start_elevation_m": 239.95584777888075,
   "end_elevation_m": 250.89942774989703,
   "min_gradient_pct": 2.652373288381227
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.52599887731685,
   "diagnostic": false,
   "flags": [
    "texture_excluded_min"
   ],
   "start_distance_m": 294.0,
   "end_distance_m": 394.0,
   "start_elevation_m": 233.85293085064143,
   "end_elevation_m": 252.37892972795828,
   "min_gradient_pct": 9.711777698181919,
   "suppressed_min_gradient_pct": 5.361924298934753,
   "suppressed_min_location_m": [
    404.0,
    504.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.33,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 186.0,
  "shape_class": "sustained"
 },
 "length_m": 525.9069907245195,
 "start_elevation_m": 188.78745764406023,
 "end_elevation_m": 259.3365611932556,
 "endpoint_gain_m": 70.54910354919537,
 "overall_gradient_pct": 13.414749146422812,
 "accumulated_ascent_m": 71.60451875701696,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.214852374723478,
   "start_distance_m": 365.0,
   "end_distance_m": 370.0,
   "midpoint_distance_m": 367.5,
   "start_elevation_m": 246.28432215477528,
   "end_elevation_m": 247.54506477351146,
   "start_xy": [
    636005.9992157113,
    6216370.028800848
   ],
   "end_xy": [
    636004.3993083676,
    6216374.765919855
   ]
  },
  "max_10m": {
   "gradient_pct": 24.5136962580861,
   "start_distance_m": 365.0,
   "end_distance_m": 375.0,
   "midpoint_distance_m": 370.0,
   "start_elevation_m": 246.28432215477528,
   "end_elevation_m": 248.7356917805839,
   "start_xy": [
    636005.9992157113,
    6216370.028800848
   ],
   "end_xy": [
    636003.0038752535,
    6216379.513871927
   ]
  },
  "max_20m": {
   "gradient_pct": 23.554206765032433,
   "start_distance_m": 361.0,
   "end_distance_m": 381.0,
   "midpoint_distance_m": 371.0,
   "start_elevation_m": 245.39381292498976,
   "end_elevation_m": 250.10465427799625,
   "start_xy": [
    636008.0368746555,
    6216366.621909451
   ],
   "end_xy": [
    636004.3123671295,
    6216385.369454648
   ]
  },
  "max_25m": {
   "gradient_pct": 23.287505509469383,
   "start_distance_m": 356.0,
   "end_distance_m": 381.0,
   "midpoint_distance_m": 368.5,
   "start_elevation_m": 244.2827779006289,
   "end_elevation_m": 250.10465427799625,
   "start_xy": [
    636010.9007275098,
    6216362.523330815
   ],
   "end_xy": [
    636004.3123671295,
    6216385.369454648
   ]
  },
  "max_50m": {
   "gradient_pct": 21.887159942032554,
   "start_distance_m": 335.0,
   "end_distance_m": 385.0,
   "midpoint_distance_m": 360.0,
   "start_elevation_m": 239.95584777888075,
   "end_elevation_m": 250.89942774989703,
   "start_xy": [
    636024.5763470248,
    6216346.94605774
   ],
   "end_xy": [
    636007.2928689935,
    6216387.541428062
   ]
  },
  "max_100m": {
   "gradient_pct": 18.52599887731685,
   "start_distance_m": 294.0,
   "end_distance_m": 394.0,
   "midpoint_distance_m": 344.0,
   "start_elevation_m": 233.85293085064143,
   "end_elevation_m": 252.37892972795828,
   "start_xy": [
    636058.9441761312,
    6216324.621244655
   ],
   "end_xy": [
    636015.7769032874,
    6216390.517466739
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.751126146134993,
   "start_distance_m": 476.0,
   "end_distance_m": 481.0,
   "midpoint_distance_m": 478.5,
   "start_elevation_m": 257.44446970963264,
   "end_elevation_m": 257.2569134023259,
   "start_xy": [
    636088.7398774426,
    6216386.905546151
   ],
   "end_xy": [
    636090.8683002834,
    6216391.300880225
   ]
  },
  "min_10m": {
   "gradient_pct": 1.0972052370107122,
   "start_distance_m": 432.0,
   "end_distance_m": 442.0,
   "midpoint_distance_m": 437.0,
   "start_elevation_m": 253.9301189702591,
   "end_elevation_m": 254.03983949396016,
   "start_xy": [
    636050.329470707,
    6216375.309970452
   ],
   "end_xy": [
    636059.8225255501,
    6216372.414229546
   ]
  },
  "min_20m": {
   "gradient_pct": 1.2871492721920674,
   "start_distance_m": 422.0,
   "end_distance_m": 442.0,
   "midpoint_distance_m": 432.0,
   "start_elevation_m": 253.78240963952175,
   "end_elevation_m": 254.03983949396016,
   "start_xy": [
    636041.2478187189,
    6216379.495321824
   ],
   "end_xy": [
    636059.8225255501,
    6216372.414229546
   ]
  },
  "min_25m": {
   "gradient_pct": 1.3937264720894973,
   "start_distance_m": 418.0,
   "end_distance_m": 443.0,
   "midpoint_distance_m": 430.5,
   "start_elevation_m": 253.71553606597257,
   "end_elevation_m": 254.06396768399495,
   "start_xy": [
    636037.666006615,
    6216381.275945887
   ],
   "end_xy": [
    636060.8057388145,
    6216372.231769477
   ]
  },
  "min_50m": {
   "gradient_pct": 2.652373288381227,
   "start_distance_m": 400.0,
   "end_distance_m": 450.0,
   "midpoint_distance_m": 425.0,
   "start_elevation_m": 252.967281660587,
   "end_elevation_m": 254.2934683047776,
   "start_xy": [
    636021.3904592696,
    6216388.931478852
   ],
   "end_xy": [
    636067.4898325892,
    6216373.338110205
   ]
  },
  "min_100m": {
   "gradient_pct": 9.711777698181919,
   "start_distance_m": 365.0,
   "end_distance_m": 465.0,
   "midpoint_distance_m": 415.0,
   "start_elevation_m": 246.28432215477528,
   "end_elevation_m": 255.9960998529572,
   "start_xy": [
    636005.9992157113,
    6216370.028800848
   ],
   "end_xy": [
    636081.2641593154,
    6216379.216419087
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 32.57082485621652,
   "start_distance_m": 156.0,
   "end_distance_m": 158.0,
   "midpoint_distance_m": 157.0,
   "start_elevation_m": 214.40033548170243,
   "end_elevation_m": 215.05175197882676,
   "start_xy": [
    636180.3497265445,
    6216337.252597603
   ],
   "end_xy": [
    636178.405369432,
    6216336.784115566
   ]
  },
  "max_3m": {
   "gradient_pct": 29.244763336873802,
   "start_distance_m": 155.0,
   "end_distance_m": 158.0,
   "midpoint_distance_m": 156.5,
   "start_elevation_m": 214.17440907872054,
   "end_elevation_m": 215.05175197882676,
   "start_xy": [
    636181.3219051007,
    6216337.486838621
   ],
   "end_xy": [
    636178.405369432,
    6216336.784115566
   ]
  }
 },
 "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": {
  "texture_suppression": {
   "masked_fraction": 0.019,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    3.0,
    5.0,
    10.0,
    100.0
   ],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 5.0,
     "start_m": 468.0,
     "end_m": 473.0,
     "raw_pct": 26.53,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.065,
   "obstruction_max_height_m": 5.26,
   "flagged_windows_m": [
    5
   ]
  },
  "excluded_ranges_m": [
   [
    466.0,
    475.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "06fa4c370391597f015858e97dcf01ca2f5b3640",
   "code_git_dirty": "false",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:0048c2bbb24ab95e",
   "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-pyr4",
   "road_pbf": "block-batch-fr-pyr4.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:c54ac68b3f57b41b"
  },
  "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_E635-N6216_0m5@21LHD3JR1-2025-04-11.tif",
   "data/cache/fr/ign-lidarhd_dtm_E636-N6216_0m5@21LHD3KR-2025-03-18.tif"
  ],
  "calculated_at": "2026-09-20T06:52:04+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pyr4.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pyr4",
  "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": [
   "E635-N6216",
   "E636-N6216"
  ],
  "elevation_blocks": [
   "21LHD3JR1@2025-04-11",
   "21LHD3KR@2025-03-18"
  ],
  "ign_dalles": [
   "LHD_FXX_0635_6217_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0636_6217_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD3JR1",
   "21LHD3KR"
  ],
  "ign_editions": [
   "2025-03-18",
   "2025-04-11"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0635_6217_MNT_O_0M50_LAMB93_IGN69": "2025-04-11",
   "LHD_FXX_0636_6217_MNT_O_0M50_LAMB93_IGN69": "2025-03-18"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 28,
   "stations_resolved": 28,
   "width_median_m": 4.25,
   "width_p10_m": 1.18,
   "width_min_m": 1.0,
   "width_max_m": 12.0,
   "bounded_share": 0.464,
   "unbounded_share": 0.536,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.0,
   "window_m": [
    356.0,
    381.0
   ],
   "width_at_max25_m": 5.75,
   "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": 28,
    "stations_resolved": 28,
    "width_median_m": 3.5,
    "width_p10_m": 1.25,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.893,
    "unbounded_share": 0.107,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.0,
    "window_m": [
     356.0,
     381.0
    ],
    "width_at_max25_m": 4.0,
    "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": "Limoux",
  "county": "Aude",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}