{
 "ocl_version": "0.1.0",
 "name": "Chemin de Carles",
 "slug": "chemin-de-carles-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.32509589434386,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 259.0,
   "end_distance_m": 261.0,
   "start_elevation_m": 115.63854661894013,
   "end_elevation_m": 116.085048536827,
   "min_gradient_pct": -3.3313486951513482,
   "suppressed_max_gradient_pct": 102.42523858152666,
   "suppressed_location_m": [
    9.0,
    11.0
   ],
   "suppressed_min_gradient_pct": -102.42279230360083,
   "suppressed_min_location_m": [
    6.0,
    8.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.173860524290017,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 242.0,
   "end_distance_m": 245.0,
   "start_elevation_m": 111.99731844865168,
   "end_elevation_m": 112.66253426438038,
   "min_gradient_pct": -2.952014168809569,
   "suppressed_max_gradient_pct": 69.15227115111264,
   "suppressed_location_m": [
    9.0,
    12.0
   ],
   "suppressed_min_gradient_pct": -70.0518980270753,
   "suppressed_min_location_m": [
    6.0,
    9.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.862494779406916,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 240.0,
   "end_distance_m": 245.0,
   "start_elevation_m": 111.56940952541004,
   "end_elevation_m": 112.66253426438038,
   "min_gradient_pct": -2.5200338576297554,
   "suppressed_max_gradient_pct": 41.16041402099768,
   "suppressed_location_m": [
    9.0,
    14.0
   ],
   "suppressed_min_gradient_pct": -41.849390585255435,
   "suppressed_min_location_m": [
    4.0,
    9.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.622660806333442,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min"
   ],
   "start_distance_m": 239.0,
   "end_distance_m": 249.0,
   "start_elevation_m": 111.36643290408935,
   "end_elevation_m": 113.5286989847227,
   "min_gradient_pct": -2.0062762364815967,
   "suppressed_min_gradient_pct": -12.025264187680875,
   "suppressed_min_location_m": [
    0.0,
    10.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.48513828921523,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min"
   ],
   "start_distance_m": 240.0,
   "end_distance_m": 260.0,
   "start_elevation_m": 111.56940952541004,
   "end_elevation_m": 115.86643718325308,
   "min_gradient_pct": -0.13900469572035945,
   "suppressed_min_gradient_pct": -0.502682793852216,
   "suppressed_min_location_m": [
    0.0,
    20.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.425797669083636,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min"
   ],
   "start_distance_m": 240.0,
   "end_distance_m": 265.0,
   "start_elevation_m": 111.56940952541004,
   "end_elevation_m": 116.92585894268095,
   "min_gradient_pct": 0.7683207962713823,
   "suppressed_min_gradient_pct": 0.08097512097276649,
   "suppressed_min_location_m": [
    0.0,
    25.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.707098362962228,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 233.0,
   "end_distance_m": 283.0,
   "start_elevation_m": 110.19039483806729,
   "end_elevation_m": 120.5439440195484,
   "min_gradient_pct": 2.9500928800066504
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.44253167336329,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 199.0,
   "end_distance_m": 299.0,
   "start_elevation_m": 104.59590340615681,
   "end_elevation_m": 123.0384350795201,
   "min_gradient_pct": 3.4638392007443315
  }
 ],
 "shape": {
  "ascent_concentration": 0.388,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 265.0,
  "shape_class": "sustained"
 },
 "length_m": 626.5886794088999,
 "start_elevation_m": 83.00993761993354,
 "end_elevation_m": 148.19183467407623,
 "endpoint_gain_m": 65.1818970541427,
 "overall_gradient_pct": 10.402661138984003,
 "accumulated_ascent_m": 67.63155880319682,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.862494779406916,
   "start_distance_m": 240.0,
   "end_distance_m": 245.0,
   "midpoint_distance_m": 242.5,
   "start_elevation_m": 111.56940952541004,
   "end_elevation_m": 112.66253426438038,
   "start_xy": [
    549162.4478990424,
    6337825.004894563
   ],
   "end_xy": [
    549157.5603305448,
    6337826.05925417
   ]
  },
  "max_10m": {
   "gradient_pct": 21.622660806333442,
   "start_distance_m": 239.0,
   "end_distance_m": 249.0,
   "midpoint_distance_m": 244.0,
   "start_elevation_m": 111.36643290408935,
   "end_elevation_m": 113.5286989847227,
   "start_xy": [
    549163.425412742,
    6337824.794022641
   ],
   "end_xy": [
    549153.6279137414,
    6337826.725264164
   ]
  },
  "max_20m": {
   "gradient_pct": 21.48513828921523,
   "start_distance_m": 240.0,
   "end_distance_m": 260.0,
   "midpoint_distance_m": 250.0,
   "start_elevation_m": 111.56940952541004,
   "end_elevation_m": 115.86643718325308,
   "start_xy": [
    549162.4478990424,
    6337825.004894563
   ],
   "end_xy": [
    549142.6359428229,
    6337827.145472834
   ]
  },
  "max_25m": {
   "gradient_pct": 21.425797669083636,
   "start_distance_m": 240.0,
   "end_distance_m": 265.0,
   "midpoint_distance_m": 252.5,
   "start_elevation_m": 111.56940952541004,
   "end_elevation_m": 116.92585894268095,
   "start_xy": [
    549162.4478990424,
    6337825.004894563
   ],
   "end_xy": [
    549137.6620740267,
    6337826.914254609
   ]
  },
  "max_50m": {
   "gradient_pct": 20.707098362962228,
   "start_distance_m": 233.0,
   "end_distance_m": 283.0,
   "midpoint_distance_m": 258.0,
   "start_elevation_m": 110.19039483806729,
   "end_elevation_m": 120.5439440195484,
   "start_xy": [
    549169.290494939,
    6337823.528791112
   ],
   "end_xy": [
    549119.9311449924,
    6337823.868418875
   ]
  },
  "max_100m": {
   "gradient_pct": 18.44253167336329,
   "start_distance_m": 199.0,
   "end_distance_m": 299.0,
   "midpoint_distance_m": 249.0,
   "start_elevation_m": 104.59590340615681,
   "end_elevation_m": 123.0384350795201,
   "start_xy": [
    549201.4375418907,
    6337812.467345356
   ],
   "end_xy": [
    549104.1704589183,
    6337821.296112321
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.5200338576297554,
   "start_distance_m": 620.0,
   "end_distance_m": 625.0,
   "midpoint_distance_m": 622.5,
   "start_elevation_m": 148.33269027591953,
   "end_elevation_m": 148.20668858303804,
   "start_xy": [
    548835.8238054034,
    6337959.455007453
   ],
   "end_xy": [
    548831.2942137865,
    6337961.572269786
   ]
  },
  "min_10m": {
   "gradient_pct": -2.0062762364815967,
   "start_distance_m": 616.0,
   "end_distance_m": 626.0,
   "midpoint_distance_m": 621.0,
   "start_elevation_m": 148.39345616554928,
   "end_elevation_m": 148.19282854190112,
   "start_xy": [
    548839.4474786969,
    6337957.7611975875
   ],
   "end_xy": [
    548830.388295463,
    6337961.995722253
   ]
  },
  "min_20m": {
   "gradient_pct": -0.13900469572035945,
   "start_distance_m": 606.0,
   "end_distance_m": 626.0,
   "midpoint_distance_m": 616.0,
   "start_elevation_m": 148.2206294810452,
   "end_elevation_m": 148.19282854190112,
   "start_xy": [
    548848.5066619307,
    6337953.526672923
   ],
   "end_xy": [
    548830.388295463,
    6337961.995722253
   ]
  },
  "min_25m": {
   "gradient_pct": 0.7683207962713823,
   "start_distance_m": 601.0,
   "end_distance_m": 626.0,
   "midpoint_distance_m": 613.5,
   "start_elevation_m": 148.00074834283328,
   "end_elevation_m": 148.19282854190112,
   "start_xy": [
    548853.0362535476,
    6337951.40941059
   ],
   "end_xy": [
    548830.388295463,
    6337961.995722253
   ]
  },
  "min_50m": {
   "gradient_pct": 2.9500928800066504,
   "start_distance_m": 576.0,
   "end_distance_m": 626.0,
   "midpoint_distance_m": 601.0,
   "start_elevation_m": 146.7177821018978,
   "end_elevation_m": 148.19282854190112,
   "start_xy": [
    548875.6842116321,
    6337940.823098929
   ],
   "end_xy": [
    548830.388295463,
    6337961.995722253
   ]
  },
  "min_100m": {
   "gradient_pct": 3.4638392007443315,
   "start_distance_m": 526.0,
   "end_distance_m": 626.0,
   "midpoint_distance_m": 576.0,
   "start_elevation_m": 144.7289893411568,
   "end_elevation_m": 148.19282854190112,
   "start_xy": [
    548920.9801278011,
    6337919.650475604
   ],
   "end_xy": [
    548830.388295463,
    6337961.995722253
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.32509589434386,
   "start_distance_m": 259.0,
   "end_distance_m": 261.0,
   "midpoint_distance_m": 260.0,
   "start_elevation_m": 115.63854661894013,
   "end_elevation_m": 116.085048536827,
   "start_xy": [
    549143.6352129064,
    6337827.107272046
   ],
   "end_xy": [
    549141.6366727394,
    6337827.183673622
   ]
  },
  "max_3m": {
   "gradient_pct": 22.173860524290017,
   "start_distance_m": 242.0,
   "end_distance_m": 245.0,
   "midpoint_distance_m": 243.5,
   "start_elevation_m": 111.99731844865168,
   "end_elevation_m": 112.66253426438038,
   "start_xy": [
    549160.4928716434,
    6337825.426638406
   ],
   "end_xy": [
    549157.5603305448,
    6337826.05925417
   ]
  }
 },
 "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": 0.016,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0
   ],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.018,
   "obstruction_max_height_m": 8.71,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    4.0,
    13.0
   ]
  ],
  "review": [],
  "extent": []
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "16bcc1553fe58b280e0c4a66a3ab0980530490a6",
   "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-so7",
   "road_pbf": "block-batch-fr-so7.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": "sha256:18f786cf9fa98070"
  },
  "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_E548-N6337_0m5@21LHD2IO-2025-04-02.tif",
   "data/cache/fr/ign-lidarhd_dtm_E549-N6337_0m5@21LHD2IO-2025-04-02.tif"
  ],
  "calculated_at": "2026-09-27T04:30:22+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-so7.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-so7",
  "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": [
   "E548-N6337",
   "E549-N6337"
  ],
  "elevation_blocks": [
   "21LHD2IO@2025-04-02"
  ],
  "ign_dalles": [
   "LHD_FXX_0548_6338_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0549_6338_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD2IO"
  ],
  "ign_editions": [
   "2025-04-02"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0548_6338_MNT_O_0M50_LAMB93_IGN69": "2025-04-02",
   "LHD_FXX_0549_6338_MNT_O_0M50_LAMB93_IGN69": "2025-04-02"
  },
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": "none \u2014 the route carried no way list and no mapped way runs along it; own decks unmasked",
  "carriageway": {
   "stations": 31,
   "stations_resolved": 31,
   "width_median_m": 7.0,
   "width_p10_m": 4.75,
   "width_min_m": 4.25,
   "width_max_m": 12.0,
   "bounded_share": 0.0,
   "unbounded_share": 1.0,
   "confidence_median": 0.0,
   "window_m": [
    240.0,
    265.0
   ],
   "width_at_max25_m": 5.38,
   "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": 31,
    "stations_resolved": 31,
    "width_median_m": 12.0,
    "width_p10_m": 8.75,
    "width_min_m": 1.5,
    "width_max_m": 12.0,
    "bounded_share": 0.065,
    "unbounded_share": 0.935,
    "confidence_median": 0.0,
    "width_median_bounded_m": 4.88,
    "window_m": [
     240.0,
     265.0
    ],
    "width_at_max25_m": 10.25,
    "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": "Moissac",
  "county": "Tarn-et-Garonne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}