{
 "ocl_version": "0.1.0",
 "name": "Impasse du Carri\u00e9rou",
 "slug": "impasse-du-carrierou",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.765059921761235,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 213.0,
   "end_distance_m": 215.0,
   "start_elevation_m": 302.09086871340565,
   "end_elevation_m": 302.6061699118409,
   "min_gradient_pct": -17.054020979500706,
   "suppressed_max_gradient_pct": 43.845157500297205,
   "suppressed_location_m": [
    189.0,
    191.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.35644283479049,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 213.0,
   "end_distance_m": 216.0,
   "start_elevation_m": 302.09086871340565,
   "end_elevation_m": 302.85156199844937,
   "min_gradient_pct": -13.844405408500885,
   "suppressed_max_gradient_pct": 36.79769828014514,
   "suppressed_location_m": [
    189.0,
    192.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.05694171727191,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 150.0,
   "end_distance_m": 155.0,
   "start_elevation_m": 293.5065735401249,
   "end_elevation_m": 294.7094206259885,
   "min_gradient_pct": -7.101607598724513,
   "suppressed_max_gradient_pct": 28.775831074390226,
   "suppressed_location_m": [
    189.0,
    194.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.893335597398732,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 148.0,
   "end_distance_m": 158.0,
   "start_elevation_m": 293.0562394843051,
   "end_elevation_m": 295.34557304404495,
   "min_gradient_pct": 3.13037660040834
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.335536793446863,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 332.0,
   "end_distance_m": 352.0,
   "start_elevation_m": 319.25455181792927,
   "end_elevation_m": 323.52165917661864,
   "min_gradient_pct": 4.153251338919404
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.96892858051342,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 326.0,
   "end_distance_m": 351.0,
   "start_elevation_m": 318.0641538379085,
   "end_elevation_m": 323.3063859830369,
   "min_gradient_pct": 4.196226712361522
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.37920774701888,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 305.0,
   "end_distance_m": 355.0,
   "start_elevation_m": 313.90734160487796,
   "end_elevation_m": 324.0969454783874,
   "min_gradient_pct": 5.501103608180415
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.90070702542937,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 62.0,
   "end_distance_m": 162.0,
   "start_elevation_m": 277.1706718227329,
   "end_elevation_m": 296.0713788481623,
   "min_gradient_pct": 11.034964884868032
  }
 ],
 "shape": {
  "ascent_concentration": 0.331,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 119.0,
  "shape_class": "sustained"
 },
 "length_m": 361.97079172397923,
 "start_elevation_m": 273.22545469103653,
 "end_elevation_m": 325.15403282431504,
 "endpoint_gain_m": 51.928578133278506,
 "overall_gradient_pct": 14.34606861121453,
 "accumulated_ascent_m": 52.42818045896968,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.05694171727191,
   "start_distance_m": 150.0,
   "end_distance_m": 155.0,
   "midpoint_distance_m": 152.5,
   "start_elevation_m": 293.5065735401249,
   "end_elevation_m": 294.7094206259885,
   "start_xy": [
    664495.8569857746,
    6402057.043556568
   ],
   "end_xy": [
    664492.8493754539,
    6402061.0378375
   ]
  },
  "max_10m": {
   "gradient_pct": 22.893335597398732,
   "start_distance_m": 148.0,
   "end_distance_m": 158.0,
   "midpoint_distance_m": 153.0,
   "start_elevation_m": 293.0562394843051,
   "end_elevation_m": 295.34557304404495,
   "start_xy": [
    664497.0600299028,
    6402055.445844196
   ],
   "end_xy": [
    664491.0448092615,
    6402063.434406059
   ]
  },
  "max_20m": {
   "gradient_pct": 21.335536793446863,
   "start_distance_m": 332.0,
   "end_distance_m": 352.0,
   "midpoint_distance_m": 342.0,
   "start_elevation_m": 319.25455181792927,
   "end_elevation_m": 323.52165917661864,
   "start_xy": [
    664559.3006419599,
    6402166.585537066
   ],
   "end_xy": [
    664571.6342862331,
    6402182.2923793495
   ]
  },
  "max_25m": {
   "gradient_pct": 20.96892858051342,
   "start_distance_m": 326.0,
   "end_distance_m": 351.0,
   "midpoint_distance_m": 338.5,
   "start_elevation_m": 318.0641538379085,
   "end_elevation_m": 323.3063859830369,
   "start_xy": [
    664557.1110135153,
    6402161.037327614
   ],
   "end_xy": [
    664570.9430960089,
    6402181.569706481
   ]
  },
  "max_50m": {
   "gradient_pct": 20.37920774701888,
   "start_distance_m": 305.0,
   "end_distance_m": 355.0,
   "midpoint_distance_m": 330.0,
   "start_elevation_m": 313.90734160487796,
   "end_elevation_m": 324.0969454783874,
   "start_xy": [
    664550.2935239435,
    6402141.174753864
   ],
   "end_xy": [
    664573.7078569056,
    6402184.460397953
   ]
  },
  "max_100m": {
   "gradient_pct": 18.90070702542937,
   "start_distance_m": 62.0,
   "end_distance_m": 162.0,
   "midpoint_distance_m": 112.0,
   "start_elevation_m": 277.1706718227329,
   "end_elevation_m": 296.0713788481623,
   "start_xy": [
    664496.677264048,
    6402009.281263564
   ],
   "end_xy": [
    664488.638721005,
    6402066.629830804
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -7.101607598724513,
   "start_distance_m": 162.0,
   "end_distance_m": 167.0,
   "midpoint_distance_m": 164.5,
   "start_elevation_m": 296.0713788481623,
   "end_elevation_m": 295.71629846822606,
   "start_xy": [
    664488.638721005,
    6402066.629830804
   ],
   "end_xy": [
    664492.3235016945,
    6402065.216955935
   ]
  },
  "min_10m": {
   "gradient_pct": 3.13037660040834,
   "start_distance_m": 162.0,
   "end_distance_m": 172.0,
   "midpoint_distance_m": 167.0,
   "start_elevation_m": 296.0713788481623,
   "end_elevation_m": 296.3844165082031,
   "start_xy": [
    664488.638721005,
    6402066.629830804
   ],
   "end_xy": [
    664496.6146005142,
    6402062.669685226
   ]
  },
  "min_20m": {
   "gradient_pct": 4.153251338919404,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 273.22545469103653,
   "end_elevation_m": 274.0561049588204,
   "start_xy": [
    664478.427,
    6401952.073
   ],
   "end_xy": [
    664482.0632183751,
    6401971.739670179
   ]
  },
  "min_25m": {
   "gradient_pct": 4.196226712361522,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 273.22545469103653,
   "end_elevation_m": 274.2745113691269,
   "start_xy": [
    664478.427,
    6401952.073
   ],
   "end_xy": [
    664482.9722729687,
    6401976.656337723
   ]
  },
  "min_50m": {
   "gradient_pct": 5.501103608180415,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 273.22545469103653,
   "end_elevation_m": 275.97600649512674,
   "start_xy": [
    664478.427,
    6401952.073
   ],
   "end_xy": [
    664488.340342419,
    6402001.039567431
   ]
  },
  "min_100m": {
   "gradient_pct": 11.034964884868032,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 273.22545469103653,
   "end_elevation_m": 284.26041957590456,
   "start_xy": [
    664478.427,
    6401952.073
   ],
   "end_xy": [
    664528.9080384003,
    6402020.621431639
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.765059921761235,
   "start_distance_m": 213.0,
   "end_distance_m": 215.0,
   "midpoint_distance_m": 214.0,
   "start_elevation_m": 302.09086871340565,
   "end_elevation_m": 302.6061699118409,
   "start_xy": [
    664518.8383864977,
    6402066.694622996
   ],
   "end_xy": [
    664519.2422091231,
    6402068.653430616
   ]
  },
  "max_3m": {
   "gradient_pct": 25.35644283479049,
   "start_distance_m": 213.0,
   "end_distance_m": 216.0,
   "midpoint_distance_m": 214.5,
   "start_elevation_m": 302.09086871340565,
   "end_elevation_m": 302.85156199844937,
   "start_xy": [
    664518.8383864977,
    6402066.694622996
   ],
   "end_xy": [
    664519.4441204357,
    6402069.632834424
   ]
  }
 },
 "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": 0.017,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.11,
   "obstruction_max_height_m": 9.59,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    188.0,
    193.0
   ]
  ],
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "65362dc4429a167e9854da6969f58eec162b31f9",
   "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-mc3",
   "road_pbf": "block-batch-fr-mc3.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_E664-N6401_0m5@22LHD3KN-2025-01-29.tif",
   "data/cache/fr/ign-lidarhd_dtm_E664-N6402_0m5@22LHD3KN-2025-01-29.tif"
  ],
  "calculated_at": "2026-09-22T15:31:50+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc3.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc3",
  "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": [
   "E664-N6401",
   "E664-N6402"
  ],
  "elevation_blocks": [
   "22LHD3KN@2025-01-29"
  ],
  "ign_dalles": [
   "LHD_FXX_0664_6402_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0664_6403_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD3KN"
  ],
  "ign_editions": [
   "2025-01-29"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0664_6402_MNT_O_0M50_LAMB93_IGN69": "2025-01-29",
   "LHD_FXX_0664_6403_MNT_O_0M50_LAMB93_IGN69": "2025-01-29"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 6,
  "carriageway": {
   "stations": 21,
   "stations_resolved": 21,
   "width_median_m": 4.25,
   "width_p10_m": 2.75,
   "width_min_m": 2.25,
   "width_max_m": 12.0,
   "bounded_share": 0.333,
   "unbounded_share": 0.667,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.5,
   "window_m": [
    326.0,
    351.0
   ],
   "width_at_max25_m": 4.25,
   "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": 21,
    "stations_resolved": 21,
    "width_median_m": 4.0,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.905,
    "unbounded_share": 0.095,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.75,
    "window_m": [
     326.0,
     351.0
    ],
    "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": "Saint-Hippolyte",
  "county": "Aveyron",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}