{
 "ocl_version": "0.1.0",
 "name": "Chemin du Coulet",
 "slug": "chemin-du-coulet",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 24.683924498646093,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 482.0,
   "end_distance_m": 484.0,
   "start_elevation_m": 264.2097979137638,
   "end_elevation_m": 264.7034764037367,
   "min_gradient_pct": -3.4357957439510756
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.22919171427414,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 481.0,
   "end_distance_m": 484.0,
   "start_elevation_m": 263.9766006523085,
   "end_elevation_m": 264.7034764037367,
   "min_gradient_pct": -3.1796629907565452
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.19655386231034,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 473.0,
   "end_distance_m": 478.0,
   "start_elevation_m": 262.1780594812126,
   "end_elevation_m": 263.3378871743281,
   "min_gradient_pct": -2.4479910175369923
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.866361702050995,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 474.0,
   "end_distance_m": 484.0,
   "start_elevation_m": 262.4168402335316,
   "end_elevation_m": 264.7034764037367,
   "min_gradient_pct": -1.5304141452102726
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.88033891891905,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 473.0,
   "end_distance_m": 493.0,
   "start_elevation_m": 262.1780594812126,
   "end_elevation_m": 266.5541272649964,
   "min_gradient_pct": -1.110490403490303
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.530834710254112,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 468.0,
   "end_distance_m": 493.0,
   "start_elevation_m": 261.17141858743287,
   "end_elevation_m": 266.5541272649964,
   "min_gradient_pct": -0.5981074057638125
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.422401006401287,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 458.0,
   "end_distance_m": 508.0,
   "start_elevation_m": 259.30103886131747,
   "end_elevation_m": 269.0122393645181,
   "min_gradient_pct": 1.4986264215415304
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.553175897065103,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 397.0,
   "end_distance_m": 497.0,
   "start_elevation_m": 249.7727134163975,
   "end_elevation_m": 267.3258893134626,
   "min_gradient_pct": 2.644830308646249
  }
 ],
 "shape": {
  "ascent_concentration": 0.464,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 213.0,
  "shape_class": "stepped"
 },
 "length_m": 567.079722459933,
 "start_elevation_m": 225.51163029235877,
 "end_elevation_m": 275.2922440136698,
 "endpoint_gain_m": 49.78061372131103,
 "overall_gradient_pct": 8.778415406103376,
 "accumulated_ascent_m": 50.1727354579686,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.19655386231034,
   "start_distance_m": 473.0,
   "end_distance_m": 478.0,
   "midpoint_distance_m": 475.5,
   "start_elevation_m": 262.1780594812126,
   "end_elevation_m": 263.3378871743281,
   "start_xy": [
    888396.6024527375,
    6313435.607587641
   ],
   "end_xy": [
    888393.3609722436,
    6313439.413768183
   ]
  },
  "max_10m": {
   "gradient_pct": 22.866361702050995,
   "start_distance_m": 474.0,
   "end_distance_m": 484.0,
   "midpoint_distance_m": 479.0,
   "start_elevation_m": 262.4168402335316,
   "end_elevation_m": 264.7034764037367,
   "start_xy": [
    888395.9406033366,
    6313436.357224466
   ],
   "end_xy": [
    888389.5304169669,
    6313444.031868038
   ]
  },
  "max_20m": {
   "gradient_pct": 21.88033891891905,
   "start_distance_m": 473.0,
   "end_distance_m": 493.0,
   "midpoint_distance_m": 483.0,
   "start_elevation_m": 262.1780594812126,
   "end_elevation_m": 266.5541272649964,
   "start_xy": [
    888396.6024527375,
    6313435.607587641
   ],
   "end_xy": [
    888383.7845840518,
    6313450.959017821
   ]
  },
  "max_25m": {
   "gradient_pct": 21.530834710254112,
   "start_distance_m": 468.0,
   "end_distance_m": 493.0,
   "midpoint_distance_m": 480.5,
   "start_elevation_m": 261.17141858743287,
   "end_elevation_m": 266.5541272649964,
   "start_xy": [
    888399.9116997424,
    6313431.859403512
   ],
   "end_xy": [
    888383.7845840518,
    6313450.959017821
   ]
  },
  "max_50m": {
   "gradient_pct": 19.422401006401287,
   "start_distance_m": 458.0,
   "end_distance_m": 508.0,
   "midpoint_distance_m": 483.0,
   "start_elevation_m": 259.30103886131747,
   "end_elevation_m": 269.0122393645181,
   "start_xy": [
    888406.5301937524,
    6313424.363035256
   ],
   "end_xy": [
    888376.6841979877,
    6313464.056362627
   ]
  },
  "max_100m": {
   "gradient_pct": 17.553175897065103,
   "start_distance_m": 397.0,
   "end_distance_m": 497.0,
   "midpoint_distance_m": 447.0,
   "start_elevation_m": 249.7727134163975,
   "end_elevation_m": 267.3258893134626,
   "start_xy": [
    888435.9073310917,
    6313372.419115103
   ],
   "end_xy": [
    888381.243899008,
    6313454.045911757
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.4479910175369923,
   "start_distance_m": 229.0,
   "end_distance_m": 234.0,
   "midpoint_distance_m": 231.5,
   "start_elevation_m": 234.8734949167855,
   "end_elevation_m": 234.75109536590864,
   "start_xy": [
    888452.4574438983,
    6313205.276656042
   ],
   "end_xy": [
    888451.7355570326,
    6313210.218051826
   ]
  },
  "min_10m": {
   "gradient_pct": -1.5304141452102726,
   "start_distance_m": 229.0,
   "end_distance_m": 239.0,
   "midpoint_distance_m": 234.0,
   "start_elevation_m": 234.8734949167855,
   "end_elevation_m": 234.72045350226446,
   "start_xy": [
    888452.4574438983,
    6313205.276656042
   ],
   "end_xy": [
    888451.1821156223,
    6313215.187327689
   ]
  },
  "min_20m": {
   "gradient_pct": -1.110490403490303,
   "start_distance_m": 227.0,
   "end_distance_m": 247.0,
   "midpoint_distance_m": 237.0,
   "start_elevation_m": 234.87456924961793,
   "end_elevation_m": 234.65247116891987,
   "start_xy": [
    888452.4038172592,
    6313203.590280638
   ],
   "end_xy": [
    888450.2966093658,
    6313223.13816907
   ]
  },
  "min_25m": {
   "gradient_pct": -0.5981074057638125,
   "start_distance_m": 227.0,
   "end_distance_m": 252.0,
   "midpoint_distance_m": 239.5,
   "start_elevation_m": 234.87456924961793,
   "end_elevation_m": 234.72504239817698,
   "start_xy": [
    888452.4038172592,
    6313203.590280638
   ],
   "end_xy": [
    888449.7431679557,
    6313228.107444933
   ]
  },
  "min_50m": {
   "gradient_pct": 1.4986264215415304,
   "start_distance_m": 217.0,
   "end_distance_m": 267.0,
   "midpoint_distance_m": 242.0,
   "start_elevation_m": 234.4027608305709,
   "end_elevation_m": 235.15207404134168,
   "start_xy": [
    888443.0011436744,
    6313200.185911467
   ],
   "end_xy": [
    888448.0828437249,
    6313243.015272523
   ]
  },
  "min_100m": {
   "gradient_pct": 2.644830308646249,
   "start_distance_m": 48.0,
   "end_distance_m": 148.0,
   "midpoint_distance_m": 98.0,
   "start_elevation_m": 228.30246182334264,
   "end_elevation_m": 230.9472921319889,
   "start_xy": [
    888340.517469514,
    6313110.158670927
   ],
   "end_xy": [
    888381.4521854492,
    6313169.293798992
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 24.683924498646093,
   "start_distance_m": 482.0,
   "end_distance_m": 484.0,
   "midpoint_distance_m": 483.0,
   "start_elevation_m": 264.2097979137638,
   "end_elevation_m": 264.7034764037367,
   "start_xy": [
    888390.8072687258,
    6313442.49250142
   ],
   "end_xy": [
    888389.5304169669,
    6313444.031868038
   ]
  },
  "max_3m": {
   "gradient_pct": 24.22919171427414,
   "start_distance_m": 481.0,
   "end_distance_m": 484.0,
   "midpoint_distance_m": 482.5,
   "start_elevation_m": 263.9766006523085,
   "end_elevation_m": 264.7034764037367,
   "start_xy": [
    888391.4456946052,
    6313441.722818111
   ],
   "end_xy": [
    888389.5304169669,
    6313444.031868038
   ]
  }
 },
 "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": 0.174,
   "obstruction_max_height_m": 16.78,
   "flagged_windows_m": []
  },
  "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-pr2",
   "road_pbf": "block-batch-fr-pr2.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_E888-N6313_0m5@21LHD7PP-2025-04-02.tif"
  ],
  "calculated_at": "2026-09-25T09:35:05+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pr2.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pr2",
  "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": [
   "E888-N6313"
  ],
  "elevation_blocks": [
   "21LHD7PP@2025-04-02"
  ],
  "ign_dalles": [
   "LHD_FXX_0888_6314_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD7PP"
  ],
  "ign_editions": [
   "2025-04-02"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0888_6314_MNT_O_0M50_LAMB93_IGN69": "2025-04-02"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 4,
  "carriageway": {
   "stations": 29,
   "stations_resolved": 29,
   "width_median_m": 5.75,
   "width_p10_m": 3.45,
   "width_min_m": 3.25,
   "width_max_m": 12.0,
   "bounded_share": 0.207,
   "unbounded_share": 0.793,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.75,
   "window_m": [
    468.0,
    493.0
   ],
   "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": 29,
    "stations_resolved": 29,
    "width_median_m": 4.0,
    "width_p10_m": 1.9,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.759,
    "unbounded_share": 0.241,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.25,
    "window_m": [
     468.0,
     493.0
    ],
    "width_at_max25_m": 3.25,
    "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": "Gargas",
  "county": "Vaucluse",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}