{
 "ocl_version": "0.1.0",
 "name": "Chemin de la Poterie",
 "slug": "chemin-de-la-poterie",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 29.429427275610465,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 141.0,
   "end_distance_m": 143.0,
   "start_elevation_m": 146.10154164242118,
   "end_elevation_m": 146.6901301879334,
   "min_gradient_pct": -23.173136183750387
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 28.112517715400525,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 141.0,
   "end_distance_m": 144.0,
   "start_elevation_m": 146.10154164242118,
   "end_elevation_m": 146.9449171738832,
   "min_gradient_pct": -22.21077448582207,
   "suppressed_max_gradient_pct": 28.837394652651938,
   "suppressed_location_m": [
    1160.0,
    1163.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 27.434619832872613,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 141.0,
   "end_distance_m": 146.0,
   "start_elevation_m": 146.10154164242118,
   "end_elevation_m": 147.4732726340648,
   "min_gradient_pct": -20.46143919897588,
   "suppressed_max_gradient_pct": 27.84253571382237,
   "suppressed_location_m": [
    1159.0,
    1164.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.660990918578023,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 135.0,
   "end_distance_m": 145.0,
   "start_elevation_m": 144.5463294086801,
   "end_elevation_m": 147.2124285005379,
   "min_gradient_pct": -17.84054175009885
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.101564660657147,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 129.0,
   "end_distance_m": 149.0,
   "start_elevation_m": 143.32230113654532,
   "end_elevation_m": 148.14261406867675,
   "min_gradient_pct": -16.363803863236654
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.732954983880177,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 124.0,
   "end_distance_m": 149.0,
   "start_elevation_m": 142.4593753227067,
   "end_elevation_m": 148.14261406867675,
   "min_gradient_pct": -16.06904481173285,
   "suppressed_max_gradient_pct": 23.054039564981395,
   "suppressed_location_m": [
    1155.0,
    1180.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.54912042020385,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 100.0,
   "end_distance_m": 150.0,
   "start_elevation_m": 138.03966516490914,
   "end_elevation_m": 148.31422537501106,
   "min_gradient_pct": -13.144588041353018
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.058176345098587,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 62.0,
   "end_distance_m": 162.0,
   "start_elevation_m": 132.95864091687983,
   "end_elevation_m": 150.01681726197842,
   "min_gradient_pct": -7.192618045224464
  }
 ],
 "shape": {
  "ascent_concentration": 0.366,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 119.0,
  "shape_class": "sustained"
 },
 "length_m": 1234.6888570096141,
 "start_elevation_m": 130.39311486035314,
 "end_elevation_m": 208.7874223427958,
 "endpoint_gain_m": 78.39430748244266,
 "overall_gradient_pct": 6.34931683698124,
 "accumulated_ascent_m": 92.2592469012169,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 27.434619832872613,
   "start_distance_m": 141.0,
   "end_distance_m": 146.0,
   "midpoint_distance_m": 143.5,
   "start_elevation_m": 146.10154164242118,
   "end_elevation_m": 147.4732726340648,
   "start_xy": [
    1011365.8488126511,
    6277314.454355042
   ],
   "end_xy": [
    1011360.9336450394,
    6277313.661305172
   ]
  },
  "max_10m": {
   "gradient_pct": 26.660990918578023,
   "start_distance_m": 135.0,
   "end_distance_m": 145.0,
   "midpoint_distance_m": 140.0,
   "start_elevation_m": 144.5463294086801,
   "end_elevation_m": 147.2124285005379,
   "start_xy": [
    1011371.8057388364,
    6277315.172011244
   ],
   "end_xy": [
    1011361.8775285278,
    6277313.975917575
   ]
  },
  "max_20m": {
   "gradient_pct": 24.101564660657147,
   "start_distance_m": 129.0,
   "end_distance_m": 149.0,
   "midpoint_distance_m": 139.0,
   "start_elevation_m": 143.32230113654532,
   "end_elevation_m": 148.14261406867675,
   "start_xy": [
    1011377.7634477277,
    6277315.801352812
   ],
   "end_xy": [
    1011358.1386894883,
    6277312.571248538
   ]
  },
  "max_25m": {
   "gradient_pct": 22.732954983880177,
   "start_distance_m": 124.0,
   "end_distance_m": 149.0,
   "midpoint_distance_m": 136.5,
   "start_elevation_m": 142.4593753227067,
   "end_elevation_m": 148.14261406867675,
   "start_xy": [
    1011382.7373728944,
    6277315.291383758
   ],
   "end_xy": [
    1011358.1386894883,
    6277312.571248538
   ]
  },
  "max_50m": {
   "gradient_pct": 20.54912042020385,
   "start_distance_m": 100.0,
   "end_distance_m": 150.0,
   "midpoint_distance_m": 125.0,
   "start_elevation_m": 138.03966516490914,
   "end_elevation_m": 148.31422537501106,
   "start_xy": [
    1011406.1168582154,
    6277310.738669624
   ],
   "end_xy": [
    1011357.2070376379,
    6277312.207896326
   ]
  },
  "max_100m": {
   "gradient_pct": 17.058176345098587,
   "start_distance_m": 62.0,
   "end_distance_m": 162.0,
   "midpoint_distance_m": 112.0,
   "start_elevation_m": 132.95864091687983,
   "end_elevation_m": 150.01681726197842,
   "start_xy": [
    1011442.3505652924,
    6277299.958674646
   ],
   "end_xy": [
    1011347.5318282805,
    6277319.144770023
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -20.46143919897588,
   "start_distance_m": 566.0,
   "end_distance_m": 571.0,
   "midpoint_distance_m": 568.5,
   "start_elevation_m": 176.2998039457865,
   "end_elevation_m": 175.2767319858377,
   "start_xy": [
    1010977.8469934567,
    6277432.202251316
   ],
   "end_xy": [
    1010973.0589471828,
    6277433.642602967
   ]
  },
  "min_10m": {
   "gradient_pct": -17.84054175009885,
   "start_distance_m": 564.0,
   "end_distance_m": 574.0,
   "midpoint_distance_m": 569.0,
   "start_elevation_m": 176.60785889973764,
   "end_elevation_m": 174.82380472472775,
   "start_xy": [
    1010979.7622119662,
    6277431.626110656
   ],
   "end_xy": [
    1010970.1861194185,
    6277434.506813958
   ]
  },
  "min_20m": {
   "gradient_pct": -16.363803863236654,
   "start_distance_m": 840.0,
   "end_distance_m": 860.0,
   "midpoint_distance_m": 850.0,
   "start_elevation_m": 183.66702026921044,
   "end_elevation_m": 180.3942594965631,
   "start_xy": [
    1010837.562058343,
    6277641.973790857
   ],
   "end_xy": [
    1010818.1553523354,
    6277646.524580308
   ]
  },
  "min_25m": {
   "gradient_pct": -16.06904481173285,
   "start_distance_m": 836.0,
   "end_distance_m": 861.0,
   "midpoint_distance_m": 848.5,
   "start_elevation_m": 184.25985498437296,
   "end_elevation_m": 180.24259378143975,
   "start_xy": [
    1010841.2701691154,
    6277640.517996487
   ],
   "end_xy": [
    1010817.1642604903,
    6277646.657760466
   ]
  },
  "min_50m": {
   "gradient_pct": -13.144588041353018,
   "start_distance_m": 824.0,
   "end_distance_m": 874.0,
   "midpoint_distance_m": 849.0,
   "start_elevation_m": 185.3248519290409,
   "end_elevation_m": 178.7525579083644,
   "start_xy": [
    1010850.9070339832,
    6277633.593886435
   ],
   "end_xy": [
    1010804.3890643977,
    6277645.201459166
   ]
  },
  "min_100m": {
   "gradient_pct": -7.192618045224464,
   "start_distance_m": 774.0,
   "end_distance_m": 874.0,
   "midpoint_distance_m": 824.0,
   "start_elevation_m": 185.94517595358886,
   "end_elevation_m": 178.7525579083644,
   "start_xy": [
    1010877.0418201762,
    6277591.232379264
   ],
   "end_xy": [
    1010804.3890643977,
    6277645.201459166
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 29.429427275610465,
   "start_distance_m": 141.0,
   "end_distance_m": 143.0,
   "midpoint_distance_m": 142.0,
   "start_elevation_m": 146.10154164242118,
   "end_elevation_m": 146.6901301879334,
   "start_xy": [
    1011365.8488126511,
    6277314.454355042
   ],
   "end_xy": [
    1011363.8631705894,
    6277314.215136308
   ]
  },
  "max_3m": {
   "gradient_pct": 28.112517715400525,
   "start_distance_m": 141.0,
   "end_distance_m": 144.0,
   "midpoint_distance_m": 142.5,
   "start_elevation_m": 146.10154164242118,
   "end_elevation_m": 146.9449171738832,
   "start_xy": [
    1011365.8488126511,
    6277314.454355042
   ],
   "end_xy": [
    1011362.8703495585,
    6277314.095526942
   ]
  }
 },
 "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": 0.024,
   "windows_resited": [
    3.0,
    5.0,
    25.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 1155.0,
     "end_m": 1180.0,
     "raw_pct": 23.05,
     "reason": "hump"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.209,
   "obstruction_max_height_m": 13.8,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    1153.0,
    1182.0
   ]
  ],
  "review": [],
  "extent": []
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "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_E1010-N6277_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1011-N6277_0m5.tif"
  ],
  "calculated_at": "2026-09-17T02:07:17+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-alps4.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-alps4",
  "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": [
   "E1010-N6277",
   "E1011-N6277"
  ],
  "elevation_blocks": [
   "22LHD6RQ@2025-03-13"
  ],
  "ign_dalles": [
   "LHD_FXX_1010_6278_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_1011_6278_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD6RQ"
  ],
  "ign_editions": [
   "2025-03-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1010_6278_MNT_O_0M50_LAMB93_IGN69": "2025-03-13",
   "LHD_FXX_1011_6278_MNT_O_0M50_LAMB93_IGN69": "2025-03-13"
  },
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 56,
   "stations_resolved": 56,
   "width_median_m": 4.75,
   "width_p10_m": 3.0,
   "width_min_m": 1.25,
   "width_max_m": 9.0,
   "bounded_share": 0.554,
   "unbounded_share": 0.446,
   "confidence_median": 0.59,
   "width_median_bounded_m": 4.25,
   "window_m": [
    124.0,
    149.0
   ],
   "width_at_max25_m": 4.75,
   "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": 56,
    "stations_resolved": 56,
    "width_median_m": 3.62,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 11.25,
    "bounded_share": 0.946,
    "unbounded_share": 0.054,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.5,
    "window_m": [
     124.0,
     149.0
    ],
    "width_at_max25_m": 1.0,
    "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": "Les Adrets-de-l'Est\u00e9rel",
  "county": "Var",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}