{
 "ocl_version": "0.1.0",
 "name": "Chemin du Barnier",
 "slug": "chemin-du-barnier",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 44.530409783465075,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2.0,
   "end_distance_m": 4.0,
   "start_elevation_m": 177.71945489306307,
   "end_elevation_m": 178.61006308873237,
   "min_gradient_pct": -8.776861704882322,
   "suppressed_max_gradient_pct": 54.603098677782214,
   "suppressed_location_m": [
    9.0,
    11.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 44.03231657697404,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1.0,
   "end_distance_m": 4.0,
   "start_elevation_m": 177.28909359142315,
   "end_elevation_m": 178.61006308873237,
   "min_gradient_pct": -5.6099884180080535,
   "suppressed_max_gradient_pct": 48.233696666229285,
   "suppressed_location_m": [
    8.0,
    11.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 42.20355755762682,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1.0,
   "end_distance_m": 6.0,
   "start_elevation_m": 177.28909359142315,
   "end_elevation_m": 179.3992714693045,
   "min_gradient_pct": -4.954513429520375
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.392813353995905,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 84.0,
   "end_distance_m": 94.0,
   "start_elevation_m": 198.15135704770714,
   "end_elevation_m": 200.49063838310673,
   "min_gradient_pct": -4.800749915383449,
   "suppressed_max_gradient_pct": 41.16852233431899,
   "suppressed_location_m": [
    1.0,
    11.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.844014902922254,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 75.0,
   "end_distance_m": 95.0,
   "start_elevation_m": 196.14979469719026,
   "end_elevation_m": 200.7185976777747,
   "min_gradient_pct": -4.4404420133838585,
   "suppressed_max_gradient_pct": 33.791164663932136,
   "suppressed_location_m": [
    2.0,
    22.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.824854610299553,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 75.0,
   "end_distance_m": 100.0,
   "start_elevation_m": 196.14979469719026,
   "end_elevation_m": 201.85600834976515,
   "min_gradient_pct": -4.183916253080611,
   "suppressed_max_gradient_pct": 32.23070868967875,
   "suppressed_location_m": [
    1.0,
    26.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 22.47295445732334,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 59.0,
   "end_distance_m": 109.0,
   "start_elevation_m": 192.60334129290396,
   "end_elevation_m": 203.83981852156563,
   "min_gradient_pct": -2.544867788857175,
   "suppressed_max_gradient_pct": 27.327765704584408,
   "suppressed_location_m": [
    0.0,
    50.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.973435648908662,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 42.0,
   "end_distance_m": 142.0,
   "start_elevation_m": 189.18174741776662,
   "end_elevation_m": 206.15518306667528,
   "min_gradient_pct": -1.3877144436610251,
   "suppressed_max_gradient_pct": 24.771623217938554,
   "suppressed_location_m": [
    0.0,
    100.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.503,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 119.0,
  "shape_class": "stepped"
 },
 "length_m": 755.8171494570078,
 "start_elevation_m": 177.0843851318266,
 "end_elevation_m": 239.80217645703556,
 "endpoint_gain_m": 62.717791325208964,
 "overall_gradient_pct": 8.29801114863119,
 "accumulated_ascent_m": 66.50967473986529,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 42.20355755762682,
   "start_distance_m": 1.0,
   "end_distance_m": 6.0,
   "midpoint_distance_m": 3.5,
   "start_elevation_m": 177.28909359142315,
   "end_elevation_m": 179.3992714693045,
   "start_xy": [
    1035185.7351472173,
    6299107.84484813
   ],
   "end_xy": [
    1035182.8508833036,
    6299111.929088778
   ]
  },
  "max_10m": {
   "gradient_pct": 23.392813353995905,
   "start_distance_m": 84.0,
   "end_distance_m": 94.0,
   "midpoint_distance_m": 89.0,
   "start_elevation_m": 198.15135704770714,
   "end_elevation_m": 200.49063838310673,
   "start_xy": [
    1035141.0116186307,
    6299177.593786751
   ],
   "end_xy": [
    1035135.4717879572,
    6299185.919066092
   ]
  },
  "max_20m": {
   "gradient_pct": 22.844014902922254,
   "start_distance_m": 75.0,
   "end_distance_m": 95.0,
   "midpoint_distance_m": 85.0,
   "start_elevation_m": 196.14979469719026,
   "end_elevation_m": 200.7185976777747,
   "start_xy": [
    1035145.9974662369,
    6299170.101035344
   ],
   "end_xy": [
    1035134.91780489,
    6299186.751594027
   ]
  },
  "max_25m": {
   "gradient_pct": 22.824854610299553,
   "start_distance_m": 75.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 87.5,
   "start_elevation_m": 196.14979469719026,
   "end_elevation_m": 201.85600834976515,
   "start_xy": [
    1035145.9974662369,
    6299170.101035344
   ],
   "end_xy": [
    1035132.7251585384,
    6299191.231640349
   ]
  },
  "max_50m": {
   "gradient_pct": 22.47295445732334,
   "start_distance_m": 59.0,
   "end_distance_m": 109.0,
   "midpoint_distance_m": 84.0,
   "start_elevation_m": 192.60334129290396,
   "end_elevation_m": 203.83981852156563,
   "start_xy": [
    1035154.8437044306,
    6299156.769038306
   ],
   "end_xy": [
    1035129.0692685562,
    6299199.4556581285
   ]
  },
  "max_100m": {
   "gradient_pct": 16.973435648908662,
   "start_distance_m": 42.0,
   "end_distance_m": 142.0,
   "midpoint_distance_m": 92.0,
   "start_elevation_m": 189.18174741776662,
   "end_elevation_m": 206.15518306667528,
   "start_xy": [
    1035164.1614137967,
    6299142.55002666
   ],
   "end_xy": [
    1035118.624615111,
    6299230.698206929
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -4.954513429520375,
   "start_distance_m": 492.0,
   "end_distance_m": 497.0,
   "midpoint_distance_m": 494.5,
   "start_elevation_m": 236.60247843909198,
   "end_elevation_m": 236.35475276761596,
   "start_xy": [
    1035018.0416319865,
    6299564.997918968
   ],
   "end_xy": [
    1035017.1047287156,
    6299569.909355852
   ]
  },
  "min_10m": {
   "gradient_pct": -4.800749915383449,
   "start_distance_m": 494.0,
   "end_distance_m": 504.0,
   "midpoint_distance_m": 499.0,
   "start_elevation_m": 236.5230524201562,
   "end_elevation_m": 236.04297742861786,
   "start_xy": [
    1035017.6668706781,
    6299566.962493721
   ],
   "end_xy": [
    1035015.7930641363,
    6299576.785367489
   ]
  },
  "min_20m": {
   "gradient_pct": -4.4404420133838585,
   "start_distance_m": 484.0,
   "end_distance_m": 504.0,
   "midpoint_distance_m": 494.0,
   "start_elevation_m": 236.93106583129463,
   "end_elevation_m": 236.04297742861786,
   "start_xy": [
    1035019.8633988014,
    6299557.217831763
   ],
   "end_xy": [
    1035015.7930641363,
    6299576.785367489
   ]
  },
  "min_25m": {
   "gradient_pct": -4.183916253080611,
   "start_distance_m": 484.0,
   "end_distance_m": 509.0,
   "midpoint_distance_m": 496.5,
   "start_elevation_m": 236.93106583129463,
   "end_elevation_m": 235.88508676802448,
   "start_xy": [
    1035019.8633988014,
    6299557.217831763
   ],
   "end_xy": [
    1035014.8561608654,
    6299581.696804372
   ]
  },
  "min_50m": {
   "gradient_pct": -2.544867788857175,
   "start_distance_m": 478.0,
   "end_distance_m": 528.0,
   "midpoint_distance_m": 503.0,
   "start_elevation_m": 236.99813163210288,
   "end_elevation_m": 235.7256977376743,
   "start_xy": [
    1035021.5620752722,
    6299551.4633119535
   ],
   "end_xy": [
    1035011.6470095305,
    6299600.418942747
   ]
  },
  "min_100m": {
   "gradient_pct": -1.3877144436610251,
   "start_distance_m": 578.0,
   "end_distance_m": 678.0,
   "midpoint_distance_m": 628.0,
   "start_elevation_m": 238.24526945012022,
   "end_elevation_m": 236.8575550064592,
   "start_xy": [
    1034999.8119901713,
    6299647.832201235
   ],
   "end_xy": [
    1034922.2477560489,
    6299617.21899107
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 44.530409783465075,
   "start_distance_m": 2.0,
   "end_distance_m": 4.0,
   "midpoint_distance_m": 3.0,
   "start_elevation_m": 177.71945489306307,
   "end_elevation_m": 178.61006308873237,
   "start_xy": [
    1035185.1582944345,
    6299108.661696259
   ],
   "end_xy": [
    1035184.004588869,
    6299110.295392519
   ]
  },
  "max_3m": {
   "gradient_pct": 44.03231657697404,
   "start_distance_m": 1.0,
   "end_distance_m": 4.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 177.28909359142315,
   "end_elevation_m": 178.61006308873237,
   "start_xy": [
    1035185.7351472173,
    6299107.84484813
   ],
   "end_xy": [
    1035184.004588869,
    6299110.295392519
   ]
  }
 },
 "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": 0.008,
   "windows_resited": [
    2.0,
    3.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.046,
   "windows_resited": [
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 14.0,
     "end_m": 39.0,
     "raw_pct": 28.55,
     "reason": "mask-edge"
    },
    {
     "window_m": 20.0,
     "start_m": 15.0,
     "end_m": 35.0,
     "raw_pct": 29.18,
     "reason": "mask-edge"
    },
    {
     "window_m": 10.0,
     "start_m": 13.0,
     "end_m": 23.0,
     "raw_pct": 31.44,
     "reason": "mask-edge"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.182,
   "obstruction_max_height_m": 15.97,
   "flagged_windows_m": [
    2,
    3,
    5,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    7.0,
    41.0
   ]
  ],
  "review": [
   "short_window_divergence"
  ],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "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_E1034-N6299_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1035-N6299_0m5.tif"
  ],
  "calculated_at": "2026-09-17T02:33:23+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": [
   "E1034-N6299",
   "E1035-N6299"
  ],
  "elevation_blocks": [
   "22LHD6RQ@2025-03-13"
  ],
  "ign_dalles": [
   "LHD_FXX_1034_6300_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_1035_6300_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD6RQ"
  ],
  "ign_editions": [
   "2025-03-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1034_6300_MNT_O_0M50_LAMB93_IGN69": "2025-03-13",
   "LHD_FXX_1035_6300_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": 35,
   "stations_resolved": 35,
   "width_median_m": 5.5,
   "width_p10_m": 4.0,
   "width_min_m": 1.5,
   "width_max_m": 9.25,
   "bounded_share": 0.286,
   "unbounded_share": 0.714,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.12,
   "window_m": [
    75.0,
    100.0
   ],
   "width_at_max25_m": 6.12,
   "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": 35,
    "stations_resolved": 35,
    "width_median_m": 7.0,
    "width_p10_m": 2.0,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.629,
    "unbounded_share": 0.371,
    "confidence_median": 1.0,
    "width_median_bounded_m": 4.5,
    "window_m": [
     75.0,
     100.0
    ],
    "width_at_max25_m": 7.25,
    "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": "La Gaude",
  "county": "Alpes-Maritimes",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}