{
 "ocl_version": "0.1.0",
 "name": "Chemin des R\u00e9voires",
 "slug": "chemin-des-revoires-3",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 33.27143623425002,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 749.0,
   "end_distance_m": 751.0,
   "start_elevation_m": 329.73637143977294,
   "end_elevation_m": 330.40180016445794,
   "min_gradient_pct": -22.371094601595587
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 31.70694807913416,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 749.0,
   "end_distance_m": 752.0,
   "start_elevation_m": 329.73637143977294,
   "end_elevation_m": 330.68757988214696,
   "min_gradient_pct": -18.11283595072079
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 30.780050123072442,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 748.0,
   "end_distance_m": 753.0,
   "start_elevation_m": 329.4529361929445,
   "end_elevation_m": 330.9919386990981,
   "min_gradient_pct": -12.048572364609527
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 28.996918480501108,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 743.0,
   "end_distance_m": 753.0,
   "start_elevation_m": 328.092246851048,
   "end_elevation_m": 330.9919386990981,
   "min_gradient_pct": -5.860952316399448
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 27.659862414463703,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 741.0,
   "end_distance_m": 761.0,
   "start_elevation_m": 327.5102917470548,
   "end_elevation_m": 333.04226422994753,
   "min_gradient_pct": 0.029918144537361968
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 27.373605605945613,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 741.0,
   "end_distance_m": 766.0,
   "start_elevation_m": 327.5102917470548,
   "end_elevation_m": 334.3536931485412,
   "min_gradient_pct": 0.12571784426813792
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 24.20638175374279,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 736.0,
   "end_distance_m": 786.0,
   "start_elevation_m": 326.45998054020004,
   "end_elevation_m": 338.56317141707143,
   "min_gradient_pct": 0.46194049412258664
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 21.589777468860575,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 725.0,
   "end_distance_m": 825.0,
   "start_elevation_m": 324.35796470519847,
   "end_elevation_m": 345.94774217405904,
   "min_gradient_pct": 0.7839740139984315
  }
 ],
 "shape": {
  "ascent_concentration": 0.516,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 261.0,
  "shape_class": "stepped"
 },
 "length_m": 835.7690920101232,
 "start_elevation_m": 270.52531103613387,
 "end_elevation_m": 347.5363746289205,
 "endpoint_gain_m": 77.01106359278663,
 "overall_gradient_pct": 9.21439478068828,
 "accumulated_ascent_m": 77.95801949720163,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 30.780050123072442,
   "start_distance_m": 748.0,
   "end_distance_m": 753.0,
   "midpoint_distance_m": 750.5,
   "start_elevation_m": 329.4529361929445,
   "end_elevation_m": 330.9919386990981,
   "start_xy": [
    1054745.1058463953,
    6303785.504015072
   ],
   "end_xy": [
    1054741.6519851096,
    6303789.119377048
   ]
  },
  "max_10m": {
   "gradient_pct": 28.996918480501108,
   "start_distance_m": 743.0,
   "end_distance_m": 753.0,
   "midpoint_distance_m": 748.0,
   "start_elevation_m": 328.092246851048,
   "end_elevation_m": 330.9919386990981,
   "start_xy": [
    1054748.436844768,
    6303781.791800011
   ],
   "end_xy": [
    1054741.6519851096,
    6303789.119377048
   ]
  },
  "max_20m": {
   "gradient_pct": 27.659862414463703,
   "start_distance_m": 741.0,
   "end_distance_m": 761.0,
   "midpoint_distance_m": 751.0,
   "start_elevation_m": 327.5102917470548,
   "end_elevation_m": 333.04226422994753,
   "start_xy": [
    1054749.520445988,
    6303780.110785914
   ],
   "end_xy": [
    1054737.2430567073,
    6303795.648574437
   ]
  },
  "max_25m": {
   "gradient_pct": 27.373605605945613,
   "start_distance_m": 741.0,
   "end_distance_m": 766.0,
   "midpoint_distance_m": 753.5,
   "start_elevation_m": 327.5102917470548,
   "end_elevation_m": 334.3536931485412,
   "start_xy": [
    1054749.520445988,
    6303780.110785914
   ],
   "end_xy": [
    1054735.2354271617,
    6303800.227812759
   ]
  },
  "max_50m": {
   "gradient_pct": 24.20638175374279,
   "start_distance_m": 736.0,
   "end_distance_m": 786.0,
   "midpoint_distance_m": 761.0,
   "start_elevation_m": 326.45998054020004,
   "end_elevation_m": 338.56317141707143,
   "start_xy": [
    1054752.2294490382,
    6303775.908250669
   ],
   "end_xy": [
    1054727.8134963715,
    6303818.797748983
   ]
  },
  "max_100m": {
   "gradient_pct": 21.589777468860575,
   "start_distance_m": 725.0,
   "end_distance_m": 825.0,
   "midpoint_distance_m": 775.0,
   "start_elevation_m": 324.35796470519847,
   "end_elevation_m": 345.94774217405904,
   "start_xy": [
    1054758.6752240257,
    6303767.013433795
   ],
   "end_xy": [
    1054711.179313413,
    6303853.992761865
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -12.048572364609527,
   "start_distance_m": 4.0,
   "end_distance_m": 9.0,
   "midpoint_distance_m": 6.5,
   "start_elevation_m": 270.5486507048392,
   "end_elevation_m": 269.9462220866087,
   "start_xy": [
    1054984.089418364,
    6303186.601255144
   ],
   "end_xy": [
    1054981.2424413187,
    6303190.711574074
   ]
  },
  "min_10m": {
   "gradient_pct": -5.860952316399448,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 270.52531103613387,
   "end_elevation_m": 269.9392158044939,
   "start_xy": [
    1054986.367,
    6303183.313
   ],
   "end_xy": [
    1054980.6730459097,
    6303191.53363786
   ]
  },
  "min_20m": {
   "gradient_pct": 0.029918144537361968,
   "start_distance_m": 44.0,
   "end_distance_m": 64.0,
   "midpoint_distance_m": 54.0,
   "start_elevation_m": 271.07553953116593,
   "end_elevation_m": 271.0815231600734,
   "start_xy": [
    1054956.898508954,
    6303215.365777004
   ],
   "end_xy": [
    1054945.405461843,
    6303231.427817779
   ]
  },
  "min_25m": {
   "gradient_pct": 0.12571784426813792,
   "start_distance_m": 43.0,
   "end_distance_m": 68.0,
   "midpoint_distance_m": 55.5,
   "start_elevation_m": 271.0740143993487,
   "end_elevation_m": 271.10544386041573,
   "start_xy": [
    1054957.6363835938,
    6303214.690839217
   ],
   "end_xy": [
    1054944.532241472,
    6303235.301638929
   ]
  },
  "min_50m": {
   "gradient_pct": 0.46194049412258664,
   "start_distance_m": 45.0,
   "end_distance_m": 95.0,
   "midpoint_distance_m": 70.0,
   "start_elevation_m": 271.08337925375304,
   "end_elevation_m": 271.31434950081433,
   "start_xy": [
    1054956.1606343144,
    6303216.04071479
   ],
   "end_xy": [
    1054946.6752962999,
    6303262.073110329
   ]
  },
  "min_100m": {
   "gradient_pct": 0.7839740139984315,
   "start_distance_m": 44.0,
   "end_distance_m": 144.0,
   "midpoint_distance_m": 94.0,
   "start_elevation_m": 271.07553953116593,
   "end_elevation_m": 271.85951354516436,
   "start_xy": [
    1054956.898508954,
    6303215.365777004
   ],
   "end_xy": [
    1054955.499924401,
    6303310.271855531
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 33.27143623425002,
   "start_distance_m": 749.0,
   "end_distance_m": 751.0,
   "midpoint_distance_m": 750.0,
   "start_elevation_m": 329.73637143977294,
   "end_elevation_m": 330.40180016445794,
   "start_xy": [
    1054744.415074138,
    6303786.227087467
   ],
   "end_xy": [
    1054743.0335296236,
    6303787.673232257
   ]
  },
  "max_3m": {
   "gradient_pct": 31.70694807913416,
   "start_distance_m": 749.0,
   "end_distance_m": 752.0,
   "midpoint_distance_m": 750.5,
   "start_elevation_m": 329.73637143977294,
   "end_elevation_m": 330.68757988214696,
   "start_xy": [
    1054744.415074138,
    6303786.227087467
   ],
   "end_xy": [
    1054742.3427573666,
    6303788.396304653
   ]
  }
 },
 "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": 0.195,
   "obstruction_max_height_m": 15.96,
   "flagged_windows_m": [
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "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_E1054-N6303_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1055-N6303_0m5.tif"
  ],
  "calculated_at": "2026-09-17T02:35:16+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": [
   "E1054-N6303",
   "E1055-N6303"
  ],
  "elevation_blocks": [
   "21LHD8SP@2025-06-20"
  ],
  "ign_dalles": [
   "LHD_FXX_1054_6304_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_1055_6304_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD8SP"
  ],
  "ign_editions": [
   "2025-06-20"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1054_6304_MNT_O_0M50_LAMB93_IGN69": "2025-06-20",
   "LHD_FXX_1055_6304_MNT_O_0M50_LAMB93_IGN69": "2025-06-20"
  },
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 40,
   "stations_resolved": 40,
   "width_median_m": 5.25,
   "width_p10_m": 2.95,
   "width_min_m": 1.25,
   "width_max_m": 9.75,
   "bounded_share": 0.5,
   "unbounded_share": 0.5,
   "confidence_median": 0.257,
   "width_median_bounded_m": 4.62,
   "window_m": [
    741.0,
    766.0
   ],
   "width_at_max25_m": 3.5,
   "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": 40,
    "stations_resolved": 40,
    "width_median_m": 4.25,
    "width_p10_m": 0.98,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.875,
    "unbounded_share": 0.125,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.75,
    "window_m": [
     741.0,
     766.0
    ],
    "width_at_max25_m": 2.75,
    "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": "La Turbie",
  "county": "Alpes-Maritimes",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}