{
 "ocl_version": "0.1.0",
 "name": "Chemin du Mas Lautal",
 "slug": "chemin-du-mas-lautal",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 40.20045915411572,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 201.0,
   "end_distance_m": 203.0,
   "start_elevation_m": 486.70340295370147,
   "end_elevation_m": 487.5074121367838,
   "min_gradient_pct": -24.88517241234547,
   "suppressed_max_gradient_pct": 96.44397479780764,
   "suppressed_location_m": [
    7.0,
    9.0
   ],
   "suppressed_min_gradient_pct": -52.05717417459823,
   "suppressed_min_location_m": [
    327.0,
    329.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 34.75269289220743,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 201.0,
   "end_distance_m": 204.0,
   "start_elevation_m": 486.70340295370147,
   "end_elevation_m": 487.7459837404677,
   "min_gradient_pct": -16.916784913263427,
   "suppressed_max_gradient_pct": 70.12600879763227,
   "suppressed_location_m": [
    330.0,
    333.0
   ],
   "suppressed_min_gradient_pct": -45.73798840920252,
   "suppressed_min_location_m": [
    325.0,
    328.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.418357116822335,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 206.0,
   "end_distance_m": 211.0,
   "start_elevation_m": 487.80145309126954,
   "end_elevation_m": 489.12237094711065,
   "min_gradient_pct": -10.142008258619626,
   "suppressed_max_gradient_pct": 57.15746611998384,
   "suppressed_location_m": [
    329.0,
    334.0
   ],
   "suppressed_min_gradient_pct": -44.68191263993958,
   "suppressed_min_location_m": [
    323.0,
    328.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.968597977098966,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 205.0,
   "end_distance_m": 215.0,
   "start_elevation_m": 487.58710691775127,
   "end_elevation_m": 490.18396671546117,
   "min_gradient_pct": -0.11961260016335018,
   "suppressed_max_gradient_pct": 47.77886148692289,
   "suppressed_location_m": [
    329.0,
    339.0
   ],
   "suppressed_min_gradient_pct": -34.99385957139623,
   "suppressed_min_location_m": [
    318.0,
    328.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.178168268303068,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 201.0,
   "end_distance_m": 221.0,
   "start_elevation_m": 486.70340295370147,
   "end_elevation_m": 490.9390366073621,
   "min_gradient_pct": 7.0230692776149795,
   "suppressed_max_gradient_pct": 29.411301451122824,
   "suppressed_location_m": [
    327.0,
    347.0
   ],
   "suppressed_min_gradient_pct": -18.66784722689971,
   "suppressed_min_location_m": [
    309.0,
    329.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.76183434251857,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 201.0,
   "end_distance_m": 226.0,
   "start_elevation_m": 486.70340295370147,
   "end_elevation_m": 491.8938615393311,
   "min_gradient_pct": 7.90592847046878,
   "suppressed_max_gradient_pct": 23.11952428743939,
   "suppressed_location_m": [
    263.0,
    288.0
   ],
   "suppressed_min_gradient_pct": -14.57817124680696,
   "suppressed_min_location_m": [
    304.0,
    329.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.349023636716765,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 190.0,
   "end_distance_m": 240.0,
   "start_elevation_m": 485.23792160529797,
   "end_elevation_m": 494.41243342365635,
   "min_gradient_pct": 10.575768775616666,
   "suppressed_max_gradient_pct": 18.85916980888976,
   "suppressed_location_m": [
    201.0,
    251.0
   ],
   "suppressed_min_gradient_pct": -3.2701774578105187,
   "suppressed_min_location_m": [
    279.0,
    329.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.48268772486199,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 140.0,
   "end_distance_m": 240.0,
   "start_elevation_m": 477.92974569879436,
   "end_elevation_m": 494.41243342365635,
   "min_gradient_pct": 12.80871805298392,
   "suppressed_max_gradient_pct": 17.51471259641113,
   "suppressed_location_m": [
    175.0,
    275.0
   ],
   "suppressed_min_gradient_pct": 6.851432936448646,
   "suppressed_min_location_m": [
    229.0,
    329.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.298,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 95.0,
  "shape_class": "sustained"
 },
 "length_m": 347.6453406553187,
 "start_elevation_m": 459.0541216460888,
 "end_elevation_m": 506.30313977661865,
 "endpoint_gain_m": 47.24901813052986,
 "overall_gradient_pct": 13.591155296793128,
 "accumulated_ascent_m": 55.94611907101341,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.418357116822335,
   "start_distance_m": 206.0,
   "end_distance_m": 211.0,
   "midpoint_distance_m": 208.5,
   "start_elevation_m": 487.80145309126954,
   "end_elevation_m": 489.12237094711065,
   "start_xy": [
    757907.7655842835,
    6329512.778058615
   ],
   "end_xy": [
    757908.0810699371,
    6329517.768095569
   ]
  },
  "max_10m": {
   "gradient_pct": 25.968597977098966,
   "start_distance_m": 205.0,
   "end_distance_m": 215.0,
   "midpoint_distance_m": 210.0,
   "start_elevation_m": 487.58710691775127,
   "end_elevation_m": 490.18396671546117,
   "start_xy": [
    757907.3869178274,
    6329511.853988217
   ],
   "end_xy": [
    757908.3334584598,
    6329521.760125132
   ]
  },
  "max_20m": {
   "gradient_pct": 21.178168268303068,
   "start_distance_m": 201.0,
   "end_distance_m": 221.0,
   "midpoint_distance_m": 211.0,
   "start_elevation_m": 486.70340295370147,
   "end_elevation_m": 490.9390366073621,
   "start_xy": [
    757905.8232006038,
    6329508.174446069
   ],
   "end_xy": [
    757908.712041244,
    6329527.748169477
   ]
  },
  "max_25m": {
   "gradient_pct": 20.76183434251857,
   "start_distance_m": 201.0,
   "end_distance_m": 226.0,
   "midpoint_distance_m": 213.5,
   "start_elevation_m": 486.70340295370147,
   "end_elevation_m": 491.8938615393311,
   "start_xy": [
    757905.8232006038,
    6329508.174446069
   ],
   "end_xy": [
    757909.0275268976,
    6329532.738206431
   ]
  },
  "max_50m": {
   "gradient_pct": 18.349023636716765,
   "start_distance_m": 190.0,
   "end_distance_m": 240.0,
   "midpoint_distance_m": 215.0,
   "start_elevation_m": 485.23792160529797,
   "end_elevation_m": 494.41243342365635,
   "start_xy": [
    757899.5141443089,
    6329499.163574376
   ],
   "end_xy": [
    757913.8911564469,
    6329545.191930385
   ]
  },
  "max_100m": {
   "gradient_pct": 16.48268772486199,
   "start_distance_m": 140.0,
   "end_distance_m": 240.0,
   "midpoint_distance_m": 190.0,
   "start_elevation_m": 477.92974569879436,
   "end_elevation_m": 494.41243342365635,
   "start_xy": [
    757878.817032556,
    6329454.331373577
   ],
   "end_xy": [
    757913.8911564469,
    6329545.191930385
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -10.142008258619626,
   "start_distance_m": 250.0,
   "end_distance_m": 255.0,
   "midpoint_distance_m": 252.5,
   "start_elevation_m": 496.158888533727,
   "end_elevation_m": 495.651788120796,
   "start_xy": [
    757920.0675231813,
    6329553.056566039
   ],
   "end_xy": [
    757923.1557065486,
    6329556.988883866
   ]
  },
  "min_10m": {
   "gradient_pct": -0.11961260016335018,
   "start_distance_m": 12.0,
   "end_distance_m": 22.0,
   "midpoint_distance_m": 17.0,
   "start_elevation_m": 461.3754518591705,
   "end_elevation_m": 461.36349059915415,
   "start_xy": [
    757846.200950543,
    6329349.805132728
   ],
   "end_xy": [
    757852.5804965394,
    6329357.50587249
   ]
  },
  "min_20m": {
   "gradient_pct": 7.0230692776149795,
   "start_distance_m": 12.0,
   "end_distance_m": 32.0,
   "midpoint_distance_m": 22.0,
   "start_elevation_m": 461.3754518591705,
   "end_elevation_m": 462.7800657146935,
   "start_xy": [
    757846.200950543,
    6329349.805132728
   ],
   "end_xy": [
    757858.6173596478,
    6329365.380811984
   ]
  },
  "min_25m": {
   "gradient_pct": 7.90592847046878,
   "start_distance_m": 12.0,
   "end_distance_m": 37.0,
   "midpoint_distance_m": 24.5,
   "start_elevation_m": 461.3754518591705,
   "end_elevation_m": 463.3519339767877,
   "start_xy": [
    757846.200950543,
    6329349.805132728
   ],
   "end_xy": [
    757859.848356114,
    6329370.226908113
   ]
  },
  "min_50m": {
   "gradient_pct": 10.575768775616666,
   "start_distance_m": 12.0,
   "end_distance_m": 62.0,
   "midpoint_distance_m": 37.0,
   "start_elevation_m": 461.3754518591705,
   "end_elevation_m": 466.6633362469788,
   "start_xy": [
    757846.200950543,
    6329349.805132728
   ],
   "end_xy": [
    757854.4334139476,
    6329394.039257249
   ]
  },
  "min_100m": {
   "gradient_pct": 12.80871805298392,
   "start_distance_m": 12.0,
   "end_distance_m": 112.0,
   "midpoint_distance_m": 62.0,
   "start_elevation_m": 461.3754518591705,
   "end_elevation_m": 474.1841699121544,
   "start_xy": [
    757846.200950543,
    6329349.805132728
   ],
   "end_xy": [
    757872.6776705197,
    6329427.088085958
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 40.20045915411572,
   "start_distance_m": 201.0,
   "end_distance_m": 203.0,
   "midpoint_distance_m": 202.0,
   "start_elevation_m": 486.70340295370147,
   "end_elevation_m": 487.5074121367838,
   "start_xy": [
    757905.8232006038,
    6329508.174446069
   ],
   "end_xy": [
    757906.6133297319,
    6329510.009655965
   ]
  },
  "max_3m": {
   "gradient_pct": 34.75269289220743,
   "start_distance_m": 201.0,
   "end_distance_m": 204.0,
   "midpoint_distance_m": 202.5,
   "start_elevation_m": 486.70340295370147,
   "end_elevation_m": 487.7459837404677,
   "start_xy": [
    757905.8232006038,
    6329508.174446069
   ],
   "end_xy": [
    757907.0001237796,
    6329510.93182209
   ]
  }
 },
 "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": 0.155,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    50.0,
    100.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "minima_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.244,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 263.0,
     "end_m": 288.0,
     "raw_pct": 23.12,
     "reason": "hump+mask-edge"
    },
    {
     "window_m": 20.0,
     "start_m": 262.0,
     "end_m": 282.0,
     "raw_pct": 25.33,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 264.0,
     "end_m": 274.0,
     "raw_pct": 31.52,
     "reason": "hump"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.47,
   "obstruction_max_height_m": 17.53,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    6.0,
    11.0
   ],
   [
    243.0,
    248.0
   ],
   [
    260.0,
    296.0
   ],
   [
    298.0,
    303.0
   ],
   [
    313.0,
    342.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "1cc9fdcd6556a02163cb21acb2293cad3067d2a1",
   "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-mc6",
   "road_pbf": "block-batch-fr-mc6.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:af4eae1f5df9e232"
  },
  "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_E757-N6329_0m5@21LHD4MP-2024-12-13.tif"
  ],
  "calculated_at": "2026-09-22T17:17:16+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc6.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc6",
  "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": [
   "E757-N6329"
  ],
  "elevation_blocks": [
   "21LHD4MP@2024-12-13"
  ],
  "ign_dalles": [
   "LHD_FXX_0757_6330_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD4MP"
  ],
  "ign_editions": [
   "2024-12-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0757_6330_MNT_O_0M50_LAMB93_IGN69": "2024-12-13"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 20,
   "stations_resolved": 20,
   "width_median_m": 2.88,
   "width_p10_m": 1.0,
   "width_min_m": 0.5,
   "width_max_m": 6.0,
   "bounded_share": 0.75,
   "unbounded_share": 0.25,
   "confidence_median": 0.803,
   "width_median_bounded_m": 3.0,
   "window_m": [
    201.0,
    226.0
   ],
   "width_at_max25_m": 3.0,
   "window_stations": 7,
   "single_track": true,
   "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": 20,
    "stations_resolved": 20,
    "width_median_m": 2.62,
    "width_p10_m": 0.73,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.95,
    "unbounded_share": 0.05,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.5,
    "window_m": [
     201.0,
     226.0
    ],
    "width_at_max25_m": 1.5,
    "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": "Val-d'Aigoual",
  "county": "Gard",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}