{
 "ocl_version": "0.1.0",
 "name": "Chemin du Lan\u00e7on",
 "slug": "chemin-du-lancon",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 28.750002545000086,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1439.0,
   "end_distance_m": 1441.0,
   "start_elevation_m": 186.51357723907395,
   "end_elevation_m": 187.08857728997395,
   "min_gradient_pct": -17.706950286159895,
   "suppressed_max_gradient_pct": 61.83696025886434,
   "suppressed_location_m": [
    1612.0,
    1614.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.492784391965074,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1816.0,
   "end_distance_m": 1819.0,
   "start_elevation_m": 229.60169573321014,
   "end_elevation_m": 230.3964792649691,
   "min_gradient_pct": -15.617324276843192,
   "suppressed_max_gradient_pct": 48.38890565892863,
   "suppressed_location_m": [
    1612.0,
    1615.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.085689407439077,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1814.0,
   "end_distance_m": 1819.0,
   "start_elevation_m": 229.09219479459713,
   "end_elevation_m": 230.3964792649691,
   "min_gradient_pct": -15.06892070639708,
   "suppressed_max_gradient_pct": 32.33213233312313,
   "suppressed_location_m": [
    1612.0,
    1617.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.134655774230623,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 1809.0,
   "end_distance_m": 1819.0,
   "start_elevation_m": 227.88301368754603,
   "end_elevation_m": 230.3964792649691,
   "min_gradient_pct": -13.866040427440964,
   "suppressed_max_gradient_pct": 29.545919327171646,
   "suppressed_location_m": [
    1705.0,
    1715.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.765747330449813,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 1803.0,
   "end_distance_m": 1823.0,
   "start_elevation_m": 226.71235724937424,
   "end_elevation_m": 231.2655067154642,
   "min_gradient_pct": -11.355875583393527,
   "suppressed_max_gradient_pct": 28.774669725084863,
   "suppressed_location_m": [
    1702.0,
    1722.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.32344744455588,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 1800.0,
   "end_distance_m": 1825.0,
   "start_elevation_m": 226.25874256486549,
   "end_elevation_m": 231.58960442600446,
   "min_gradient_pct": -10.389502872760659,
   "suppressed_max_gradient_pct": 28.300197601671925,
   "suppressed_location_m": [
    1697.0,
    1722.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.927006007775447,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 1772.0,
   "end_distance_m": 1822.0,
   "start_elevation_m": 221.61009833494364,
   "end_elevation_m": 231.07360133883137,
   "min_gradient_pct": -7.270076048072781,
   "suppressed_max_gradient_pct": 23.06188480380143,
   "suppressed_location_m": [
    1680.0,
    1730.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.623803983756176,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 490.0,
   "end_distance_m": 590.0,
   "start_elevation_m": 135.43156457184568,
   "end_elevation_m": 152.05536855560186,
   "min_gradient_pct": -3.1818605862500817,
   "suppressed_max_gradient_pct": 17.240278409916982,
   "suppressed_location_m": [
    1690.0,
    1790.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.379,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 191.0,
  "shape_class": "sustained"
 },
 "length_m": 1832.8008853074382,
 "start_elevation_m": 95.31700582276598,
 "end_elevation_m": 232.0359028573638,
 "endpoint_gain_m": 136.71889703459783,
 "overall_gradient_pct": 7.459560835582218,
 "accumulated_ascent_m": 143.4103273968504,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.085689407439077,
   "start_distance_m": 1814.0,
   "end_distance_m": 1819.0,
   "midpoint_distance_m": 1816.5,
   "start_elevation_m": 229.09219479459713,
   "end_elevation_m": 230.3964792649691,
   "start_xy": [
    930932.8075728023,
    6231521.413400348
   ],
   "end_xy": [
    930933.0100853775,
    6231526.409297531
   ]
  },
  "max_10m": {
   "gradient_pct": 25.134655774230623,
   "start_distance_m": 1809.0,
   "end_distance_m": 1819.0,
   "midpoint_distance_m": 1814.0,
   "start_elevation_m": 227.88301368754603,
   "end_elevation_m": 230.3964792649691,
   "start_xy": [
    930931.3203534246,
    6231516.804509546
   ],
   "end_xy": [
    930933.0100853775,
    6231526.409297531
   ]
  },
  "max_20m": {
   "gradient_pct": 22.765747330449813,
   "start_distance_m": 1803.0,
   "end_distance_m": 1823.0,
   "midpoint_distance_m": 1813.0,
   "start_elevation_m": 226.71235724937424,
   "end_elevation_m": 231.2655067154642,
   "start_xy": [
    930927.5002870548,
    6231512.43370439
   ],
   "end_xy": [
    930930.7373672118,
    6231529.167449973
   ]
  },
  "max_25m": {
   "gradient_pct": 21.32344744455588,
   "start_distance_m": 1800.0,
   "end_distance_m": 1825.0,
   "midpoint_distance_m": 1812.5,
   "start_elevation_m": 226.25874256486549,
   "end_elevation_m": 231.58960442600446,
   "start_xy": [
    930924.8353239186,
    6231511.056035532
   ],
   "end_xy": [
    930929.074489047,
    6231530.278681816
   ]
  },
  "max_50m": {
   "gradient_pct": 18.927006007775447,
   "start_distance_m": 1772.0,
   "end_distance_m": 1822.0,
   "midpoint_distance_m": 1797.0,
   "start_elevation_m": 221.61009833494364,
   "end_elevation_m": 231.07360133883137,
   "start_xy": [
    930899.0356881757,
    6231501.217041076
   ],
   "end_xy": [
    930931.5688062942,
    6231528.611834051
   ]
  },
  "max_100m": {
   "gradient_pct": 16.623803983756176,
   "start_distance_m": 490.0,
   "end_distance_m": 590.0,
   "midpoint_distance_m": 540.0,
   "start_elevation_m": 135.43156457184568,
   "end_elevation_m": 152.05536855560186,
   "start_xy": [
    930247.5987318482,
    6231224.057410097
   ],
   "end_xy": [
    930339.3467424081,
    6231251.387740603
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -15.06892070639708,
   "start_distance_m": 816.0,
   "end_distance_m": 821.0,
   "midpoint_distance_m": 818.5,
   "start_elevation_m": 161.59974506039123,
   "end_elevation_m": 160.84629902507137,
   "start_xy": [
    930560.4260670134,
    6231275.278092431
   ],
   "end_xy": [
    930564.9682165855,
    6231277.368278371
   ]
  },
  "min_10m": {
   "gradient_pct": -13.866040427440964,
   "start_distance_m": 813.0,
   "end_distance_m": 823.0,
   "midpoint_distance_m": 818.0,
   "start_elevation_m": 161.96900467414687,
   "end_elevation_m": 160.58240063140278,
   "start_xy": [
    930557.4562102627,
    6231275.3538821805
   ],
   "end_xy": [
    930566.7850764142,
    6231278.204352748
   ]
  },
  "min_20m": {
   "gradient_pct": -11.355875583393527,
   "start_distance_m": 806.0,
   "end_distance_m": 826.0,
   "midpoint_distance_m": 816.0,
   "start_elevation_m": 162.5902697264655,
   "end_elevation_m": 160.3190946097868,
   "start_xy": [
    930550.472174862,
    6231275.826375062
   ],
   "end_xy": [
    930569.5103661574,
    6231279.458464311
   ]
  },
  "min_25m": {
   "gradient_pct": -10.389502872760659,
   "start_distance_m": 807.0,
   "end_distance_m": 832.0,
   "midpoint_distance_m": 819.5,
   "start_elevation_m": 162.5203140971097,
   "end_elevation_m": 159.92293837891953,
   "start_xy": [
    930551.4698942051,
    6231275.758876079
   ],
   "end_xy": [
    930575.2551888669,
    6231280.5991582675
   ]
  },
  "min_50m": {
   "gradient_pct": -7.270076048072781,
   "start_distance_m": 784.0,
   "end_distance_m": 834.0,
   "midpoint_distance_m": 809.0,
   "start_elevation_m": 163.45039235809,
   "end_elevation_m": 159.8153543340536,
   "start_xy": [
    930528.4820235372,
    6231276.397798668
   ],
   "end_xy": [
    930577.2551338476,
    6231280.584323373
   ]
  },
  "min_100m": {
   "gradient_pct": -3.1818605862500817,
   "start_distance_m": 770.0,
   "end_distance_m": 870.0,
   "midpoint_distance_m": 820.0,
   "start_elevation_m": 163.50929699318567,
   "end_elevation_m": 160.3274364069356,
   "start_xy": [
    930514.8081175351,
    6231273.892172951
   ],
   "end_xy": [
    930612.5769306477,
    6231284.194077143
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 28.750002545000086,
   "start_distance_m": 1439.0,
   "end_distance_m": 1441.0,
   "midpoint_distance_m": 1440.0,
   "start_elevation_m": 186.51357723907395,
   "end_elevation_m": 187.08857728997395,
   "start_xy": [
    930930.9806242071,
    6231272.790438948
   ],
   "end_xy": [
    930930.3036205566,
    6231274.672370418
   ]
  },
  "max_3m": {
   "gradient_pct": 26.492784391965074,
   "start_distance_m": 1816.0,
   "end_distance_m": 1819.0,
   "midpoint_distance_m": 1817.5,
   "start_elevation_m": 229.60169573321014,
   "end_elevation_m": 230.3964792649691,
   "start_xy": [
    930932.8885778324,
    6231523.411759221
   ],
   "end_xy": [
    930933.0100853775,
    6231526.409297531
   ]
  }
 },
 "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": 0.003,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.02,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 1697.0,
     "end_m": 1722.0,
     "raw_pct": 28.3,
     "reason": "hump"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.146,
   "obstruction_max_height_m": 13.48,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    1611.0,
    1616.0
   ],
   [
    1695.0,
    1724.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "41205ec4649bb0a4093af76ff34281a5d9a13832",
   "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-pr5",
   "road_pbf": "block-batch-fr-pr5.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:ba95a0bf562c86eb"
  },
  "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_E929-N6231_0m5@21LHD7PQ-2025-03-14.tif",
   "data/cache/fr/ign-lidarhd_dtm_E930-N6231_0m5@21LHD7PQ-2025-03-14.tif",
   "data/cache/fr/ign-lidarhd_dtm_E931-N6231_0m5@21LHD7PQ-2025-03-14.tif"
  ],
  "calculated_at": "2026-09-25T08:56:38+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pr5.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pr5",
  "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": [
   "E929-N6231",
   "E930-N6231",
   "E931-N6231"
  ],
  "elevation_blocks": [
   "21LHD7PQ@2025-03-14"
  ],
  "ign_dalles": [
   "LHD_FXX_0929_6232_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0930_6232_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0931_6232_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD7PQ"
  ],
  "ign_editions": [
   "2025-03-14"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0929_6232_MNT_O_0M50_LAMB93_IGN69": "2025-03-14",
   "LHD_FXX_0930_6232_MNT_O_0M50_LAMB93_IGN69": "2025-03-14",
   "LHD_FXX_0931_6232_MNT_O_0M50_LAMB93_IGN69": "2025-03-14"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 6,
  "carriageway": {
   "stations": 78,
   "stations_resolved": 78,
   "width_median_m": 4.75,
   "width_p10_m": 2.25,
   "width_min_m": 1.0,
   "width_max_m": 11.5,
   "bounded_share": 0.513,
   "unbounded_share": 0.487,
   "confidence_median": 0.52,
   "width_median_bounded_m": 4.5,
   "window_m": [
    1800.0,
    1825.0
   ],
   "width_at_max25_m": 4.25,
   "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": 78,
    "stations_resolved": 78,
    "width_median_m": 3.5,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.897,
    "unbounded_share": 0.103,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.25,
    "window_m": [
     1800.0,
     1825.0
    ],
    "width_at_max25_m": 3.75,
    "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": "Sanary-sur-Mer",
  "county": "Var",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}