{
 "ocl_version": "0.1.0",
 "name": "Chemin de Camp Long",
 "slug": "chemin-de-camp-long",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.6321803087975,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 252.0,
   "end_distance_m": 254.0,
   "start_elevation_m": 232.8917824710643,
   "end_elevation_m": 233.36442607724024,
   "min_gradient_pct": -15.38883996974647
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.93069698900096,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 251.0,
   "end_distance_m": 254.0,
   "start_elevation_m": 232.6165051675702,
   "end_elevation_m": 233.36442607724024,
   "min_gradient_pct": -10.585719709529448
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.8090451103742,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 226.0,
   "end_distance_m": 231.0,
   "start_elevation_m": 228.4338534648171,
   "end_elevation_m": 229.57430572033581,
   "min_gradient_pct": -4.957471886378357
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.351674055083492,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 222.0,
   "end_distance_m": 232.0,
   "start_elevation_m": 227.55259693419166,
   "end_elevation_m": 229.7877643397,
   "min_gradient_pct": -0.24112417366694672
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.10943005195992,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 214.0,
   "end_distance_m": 234.0,
   "start_elevation_m": 225.94701013882337,
   "end_elevation_m": 230.16889614921536,
   "min_gradient_pct": 1.5519432690014412
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.727613958343227,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 213.0,
   "end_distance_m": 238.0,
   "start_elevation_m": 225.76844015345955,
   "end_elevation_m": 230.95034364304536,
   "min_gradient_pct": 1.9420134665377873
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.40612641618003,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 187.0,
   "end_distance_m": 237.0,
   "start_elevation_m": 221.0382898350727,
   "end_elevation_m": 230.74135304316272,
   "min_gradient_pct": 3.2229190307419913
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.402729451299365,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 156.0,
   "end_distance_m": 256.0,
   "start_elevation_m": 217.17730802190806,
   "end_elevation_m": 233.58003747320743,
   "min_gradient_pct": 4.71908995044447
  }
 ],
 "shape": {
  "ascent_concentration": 0.471,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 98.0,
  "shape_class": "stepped"
 },
 "length_m": 270.6344312341327,
 "start_elevation_m": 207.97836076171762,
 "end_elevation_m": 233.57624442994214,
 "endpoint_gain_m": 25.59788366822451,
 "overall_gradient_pct": 9.458472653126362,
 "accumulated_ascent_m": 26.618602810564,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.8090451103742,
   "start_distance_m": 226.0,
   "end_distance_m": 231.0,
   "midpoint_distance_m": 228.5,
   "start_elevation_m": 228.4338534648171,
   "end_elevation_m": 229.57430572033581,
   "start_xy": [
    1005064.1313115202,
    6286348.848016997
   ],
   "end_xy": [
    1005066.5830720267,
    6286353.203175339
   ]
  },
  "max_10m": {
   "gradient_pct": 22.351674055083492,
   "start_distance_m": 222.0,
   "end_distance_m": 232.0,
   "midpoint_distance_m": 227.0,
   "start_elevation_m": 227.55259693419166,
   "end_elevation_m": 229.7877643397,
   "start_xy": [
    1005062.6520751081,
    6286345.230855162
   ],
   "end_xy": [
    1005067.1114189505,
    6286354.052203918
   ]
  },
  "max_20m": {
   "gradient_pct": 21.10943005195992,
   "start_distance_m": 214.0,
   "end_distance_m": 234.0,
   "midpoint_distance_m": 224.0,
   "start_elevation_m": 225.94701013882337,
   "end_elevation_m": 230.16889614921536,
   "start_xy": [
    1005063.0351933502,
    6286337.240034152
   ],
   "end_xy": [
    1005068.1681127979,
    6286355.750261077
   ]
  },
  "max_25m": {
   "gradient_pct": 20.727613958343227,
   "start_distance_m": 213.0,
   "end_distance_m": 238.0,
   "midpoint_distance_m": 225.5,
   "start_elevation_m": 225.76844015345955,
   "end_elevation_m": 230.95034364304536,
   "start_xy": [
    1005063.0830831304,
    6286336.241181526
   ],
   "end_xy": [
    1005070.2815004928,
    6286359.146375393
   ]
  },
  "max_50m": {
   "gradient_pct": 19.40612641618003,
   "start_distance_m": 187.0,
   "end_distance_m": 237.0,
   "midpoint_distance_m": 212.0,
   "start_elevation_m": 221.0382898350727,
   "end_elevation_m": 230.74135304316272,
   "start_xy": [
    1005052.3094390052,
    6286314.079274354
   ],
   "end_xy": [
    1005069.7531535691,
    6286358.297346814
   ]
  },
  "max_100m": {
   "gradient_pct": 16.402729451299365,
   "start_distance_m": 156.0,
   "end_distance_m": 256.0,
   "midpoint_distance_m": 206.0,
   "start_elevation_m": 217.17730802190806,
   "end_elevation_m": 233.58003747320743,
   "start_xy": [
    1005027.3354178193,
    6286297.054128755
   ],
   "end_xy": [
    1005070.0602653255,
    6286376.682229173
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -4.957471886378357,
   "start_distance_m": 1.0,
   "end_distance_m": 6.0,
   "midpoint_distance_m": 3.5,
   "start_elevation_m": 207.95838233787555,
   "end_elevation_m": 207.71050874355663,
   "start_xy": [
    1004968.5806509393,
    6286181.91384265
   ],
   "end_xy": [
    1004968.9089056352,
    6286186.903055901
   ]
  },
  "min_10m": {
   "gradient_pct": -0.24112417366694672,
   "start_distance_m": 256.0,
   "end_distance_m": 266.0,
   "midpoint_distance_m": 261.0,
   "start_elevation_m": 233.58003747320743,
   "end_elevation_m": 233.55592505584073,
   "start_xy": [
    1005070.0602653255,
    6286376.682229173
   ],
   "end_xy": [
    1005070.7762720785,
    6286386.284077205
   ]
  },
  "min_20m": {
   "gradient_pct": 1.5519432690014412,
   "start_distance_m": 129.0,
   "end_distance_m": 149.0,
   "midpoint_distance_m": 139.0,
   "start_elevation_m": 216.63110450308733,
   "end_elevation_m": 216.94149315688762,
   "start_xy": [
    1005003.4138872952,
    6286285.199233468
   ],
   "end_xy": [
    1005020.6510538892,
    6286294.9758412745
   ]
  },
  "min_25m": {
   "gradient_pct": 1.9420134665377873,
   "start_distance_m": 127.0,
   "end_distance_m": 152.0,
   "midpoint_distance_m": 139.5,
   "start_elevation_m": 216.5502045802587,
   "end_elevation_m": 217.03570794689315,
   "start_xy": [
    1005001.940290562,
    6286283.847008388
   ],
   "end_xy": [
    1005023.5157812878,
    6286295.866535909
   ]
  },
  "min_50m": {
   "gradient_pct": 3.2229190307419913,
   "start_distance_m": 101.0,
   "end_distance_m": 151.0,
   "midpoint_distance_m": 126.0,
   "start_elevation_m": 215.38372310943743,
   "end_elevation_m": 216.99518262480842,
   "start_xy": [
    1004982.3739914937,
    6286266.746667325
   ],
   "end_xy": [
    1005022.5608721549,
    6286295.569637697
   ]
  },
  "min_100m": {
   "gradient_pct": 4.71908995044447,
   "start_distance_m": 61.0,
   "end_distance_m": 161.0,
   "midpoint_distance_m": 111.0,
   "start_elevation_m": 212.80392827302524,
   "end_elevation_m": 217.5230182234697,
   "start_xy": [
    1004960.9901852068,
    6286241.002339669
   ],
   "end_xy": [
    1005032.1099634836,
    6286298.538619812
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.6321803087975,
   "start_distance_m": 252.0,
   "end_distance_m": 254.0,
   "midpoint_distance_m": 253.0,
   "start_elevation_m": 232.8917824710643,
   "end_elevation_m": 233.36442607724024,
   "start_xy": [
    1005070.7268832517,
    6286372.738167746
   ],
   "end_xy": [
    1005070.3935742886,
    6286374.710198459
   ]
  },
  "max_3m": {
   "gradient_pct": 24.93069698900096,
   "start_distance_m": 251.0,
   "end_distance_m": 254.0,
   "midpoint_distance_m": 252.5,
   "start_elevation_m": 232.6165051675702,
   "end_elevation_m": 233.36442607724024,
   "start_xy": [
    1005070.8930149067,
    6286371.752069241
   ],
   "end_xy": [
    1005070.3935742886,
    6286374.710198459
   ]
  }
 },
 "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": 0.452,
   "obstruction_max_height_m": 15.95,
   "flagged_windows_m": [
    2,
    3,
    100
   ]
  },
  "review": [],
  "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_E1004-N6286_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1005-N6286_0m5.tif"
  ],
  "calculated_at": "2026-09-17T02:05:26+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": [
   "E1004-N6286",
   "E1005-N6286"
  ],
  "elevation_blocks": [
   "22LHD6RQ@2025-03-13"
  ],
  "ign_dalles": [
   "LHD_FXX_1004_6287_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_1005_6287_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD6RQ"
  ],
  "ign_editions": [
   "2025-03-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1004_6287_MNT_O_0M50_LAMB93_IGN69": "2025-03-13",
   "LHD_FXX_1005_6287_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": 17,
   "stations_resolved": 17,
   "width_median_m": 6.25,
   "width_p10_m": 4.15,
   "width_min_m": 2.75,
   "width_max_m": 11.5,
   "bounded_share": 0.059,
   "unbounded_share": 0.941,
   "confidence_median": 0.0,
   "width_median_bounded_m": 2.75,
   "window_m": [
    213.0,
    238.0
   ],
   "width_at_max25_m": 5.25,
   "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": 17,
    "stations_resolved": 17,
    "width_median_m": 4.0,
    "width_p10_m": 1.25,
    "width_min_m": 1.0,
    "width_max_m": 9.0,
    "bounded_share": 0.941,
    "unbounded_share": 0.059,
    "confidence_median": 1.0,
    "width_median_bounded_m": 4.0,
    "window_m": [
     213.0,
     238.0
    ],
    "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": "Montauroux",
  "county": "Var",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}