{
 "ocl_version": "0.1.0",
 "name": "Fagwr Road",
 "slug": "fagwr-road",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 31.802644358394616,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 350.0,
   "end_distance_m": 352.0,
   "start_elevation_m": 148.1438256118713,
   "end_elevation_m": 148.7798784990392,
   "min_gradient_pct": -35.01845920571469,
   "suppressed_max_gradient_pct": 89.83873714481945,
   "suppressed_location_m": [
    340.0,
    342.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.921935620258825,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 350.0,
   "end_distance_m": 353.0,
   "start_elevation_m": 148.1438256118713,
   "end_elevation_m": 148.95148368047907,
   "min_gradient_pct": -28.27994801513209,
   "suppressed_max_gradient_pct": 69.22889046951848,
   "suppressed_location_m": [
    306.0,
    309.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.226280305708656,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_unresolved"
   ],
   "start_distance_m": 348.0,
   "end_distance_m": 353.0,
   "start_elevation_m": 147.89016966519364,
   "end_elevation_m": 148.95148368047907,
   "min_gradient_pct": -22.87764540103666,
   "suppressed_max_gradient_pct": 50.60432698023874,
   "suppressed_location_m": [
    306.0,
    311.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 14.299531757987722,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 327.0,
   "end_distance_m": 337.0,
   "start_elevation_m": 144.45008942951532,
   "end_elevation_m": 145.8800426053141,
   "min_gradient_pct": -13.267882660034331,
   "suppressed_max_gradient_pct": 33.884916019436275,
   "suppressed_location_m": [
    387.0,
    397.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 12.46645982509449,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 256.0,
   "end_distance_m": 276.0,
   "start_elevation_m": 137.41540449159922,
   "end_elevation_m": 139.90869645661812,
   "min_gradient_pct": -0.9135201052799857,
   "suppressed_max_gradient_pct": 28.13468305409515,
   "suppressed_location_m": [
    377.0,
    397.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 10.66170128218198,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 181.0,
   "end_distance_m": 206.0,
   "start_elevation_m": 131.85306836934558,
   "end_elevation_m": 134.51849368989107,
   "min_gradient_pct": 1.1505787987305212,
   "suppressed_max_gradient_pct": 26.620745263758522,
   "suppressed_location_m": [
    372.0,
    397.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 8.307327811896641,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 179.0,
   "end_distance_m": 229.0,
   "start_elevation_m": 131.76936523440276,
   "end_elevation_m": 135.92302914035108,
   "min_gradient_pct": 4.2760583337052935,
   "suppressed_max_gradient_pct": 19.955861886083483,
   "suppressed_location_m": [
    347.0,
    397.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.364,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 42.0,
  "shape_class": "sustained"
 },
 "length_m": 481.01920376588095,
 "start_elevation_m": 115.33559109077314,
 "end_elevation_m": 161.99206207580886,
 "endpoint_gain_m": 46.656470985035725,
 "overall_gradient_pct": 9.699502768239604,
 "accumulated_ascent_m": 55.92785982813881,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.226280305708656,
   "start_distance_m": 348.0,
   "end_distance_m": 353.0,
   "midpoint_distance_m": 350.5,
   "start_elevation_m": 147.89016966519364,
   "end_elevation_m": 148.95148368047907,
   "start_xy": [
    267489.53426070756,
    202882.5866062665
   ],
   "end_xy": [
    267487.43256861053,
    202887.1194647048
   ]
  },
  "max_10m": {
   "gradient_pct": 14.299531757987722,
   "start_distance_m": 327.0,
   "end_distance_m": 337.0,
   "midpoint_distance_m": 332.0,
   "start_elevation_m": 144.45008942951532,
   "end_elevation_m": 145.8800426053141,
   "start_xy": [
    267504.77692759334,
    202878.3856458475
   ],
   "end_xy": [
    267495.7708159666,
    202875.1797501709
   ]
  },
  "max_20m": {
   "gradient_pct": 12.46645982509449,
   "start_distance_m": 256.0,
   "end_distance_m": 276.0,
   "midpoint_distance_m": 266.0,
   "start_elevation_m": 137.41540449159922,
   "end_elevation_m": 139.90869645661812,
   "start_xy": [
    267560.7175358244,
    202909.57365089573
   ],
   "end_xy": [
    267541.12982424465,
    202906.33261671872
   ]
  },
  "max_25m": {
   "gradient_pct": 10.66170128218198,
   "start_distance_m": 181.0,
   "end_distance_m": 206.0,
   "midpoint_distance_m": 193.5,
   "start_elevation_m": 131.85306836934558,
   "end_elevation_m": 134.51849368989107,
   "start_xy": [
    267574.20358837553,
    202981.0786306162
   ],
   "end_xy": [
    267571.5596105451,
    202956.2188385077
   ]
  },
  "max_50m": {
   "gradient_pct": 8.307327811896641,
   "start_distance_m": 179.0,
   "end_distance_m": 229.0,
   "midpoint_distance_m": 204.0,
   "start_elevation_m": 131.76936523440276,
   "end_elevation_m": 135.92302914035108,
   "start_xy": [
    267574.414571325,
    202983.06747072676
   ],
   "end_xy": [
    267569.1276044723,
    202933.34778156082
   ]
  },
  "max_100m": null
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -22.87764540103666,
   "start_distance_m": 39.0,
   "end_distance_m": 44.0,
   "midpoint_distance_m": 41.5,
   "start_elevation_m": 120.31308587841309,
   "end_elevation_m": 119.16920360836126,
   "start_xy": [
    267581.749400598,
    203121.7295477978
   ],
   "end_xy": [
    267582.30243638676,
    203116.76022731108
   ]
  },
  "min_10m": {
   "gradient_pct": -13.267882660034331,
   "start_distance_m": 38.0,
   "end_distance_m": 48.0,
   "midpoint_distance_m": 43.0,
   "start_elevation_m": 120.16529165393976,
   "end_elevation_m": 118.83850338793633,
   "start_xy": [
    267581.63937781355,
    203122.72347684836
   ],
   "end_xy": [
    267582.74533942965,
    203112.7848236998
   ]
  },
  "min_20m": {
   "gradient_pct": -0.9135201052799857,
   "start_distance_m": 310.0,
   "end_distance_m": 330.0,
   "midpoint_distance_m": 320.0,
   "start_elevation_m": 145.09491734558978,
   "end_elevation_m": 144.91221332453378,
   "start_xy": [
    267509.72496333363,
    202894.47762902462
   ],
   "end_xy": [
    267502.56292519293,
    202876.7492704594
   ]
  },
  "min_25m": {
   "gradient_pct": 1.1505787987305212,
   "start_distance_m": 39.0,
   "end_distance_m": 64.0,
   "midpoint_distance_m": 51.5,
   "start_elevation_m": 120.31308587841309,
   "end_elevation_m": 120.60073057809572,
   "start_xy": [
    267581.749400598,
    203121.7295477978
   ],
   "end_xy": [
    267584.44785160944,
    203096.8761282281
   ]
  },
  "min_50m": {
   "gradient_pct": 4.2760583337052935,
   "start_distance_m": 427.0,
   "end_distance_m": 477.0,
   "midpoint_distance_m": 452.0,
   "start_elevation_m": 159.43819541071719,
   "end_elevation_m": 161.57622457756983,
   "start_xy": [
    267423.73764443654,
    202898.62281386662
   ],
   "end_xy": [
    267373.73893258255,
    202898.516368809
   ]
  },
  "min_100m": {
   "gradient_pct": 6.755606923360091,
   "start_distance_m": 159.0,
   "end_distance_m": 259.0,
   "midpoint_distance_m": 209.0,
   "start_elevation_m": 131.02881114393264,
   "end_elevation_m": 137.78441806729273,
   "start_xy": [
    267577.63023126766,
    203002.75817546833
   ],
   "end_xy": [
    267558.01019784337,
    202908.28692064615
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 31.802644358394616,
   "start_distance_m": 350.0,
   "end_distance_m": 352.0,
   "midpoint_distance_m": 351.0,
   "start_elevation_m": 148.1438256118713,
   "end_elevation_m": 148.7798784990392,
   "start_xy": [
    267488.73566884483,
    202884.41725661472
   ],
   "end_xy": [
    267487.866800091,
    202886.2186634058
   ]
  },
  "max_3m": {
   "gradient_pct": 26.921935620258825,
   "start_distance_m": 350.0,
   "end_distance_m": 353.0,
   "midpoint_distance_m": 351.5,
   "start_elevation_m": 148.1438256118713,
   "end_elevation_m": 148.95148368047907,
   "start_xy": [
    267488.73566884483,
    202884.41725661472
   ],
   "end_xy": [
    267487.43256861053,
    202887.1194647048
   ]
  }
 },
 "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": 0.066,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.336,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 4,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 372.0,
     "end_m": 397.0,
     "raw_pct": 26.62,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 377.0,
     "end_m": 397.0,
     "raw_pct": 28.13,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 387.0,
     "end_m": 397.0,
     "raw_pct": 33.88,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 392.0,
     "end_m": 397.0,
     "raw_pct": 39.39,
     "reason": "hump"
    },
    {
     "window_m": 25.0,
     "start_m": 73.0,
     "end_m": 98.0,
     "raw_pct": 15.53,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 140.0,
     "end_m": 160.0,
     "raw_pct": 15.99,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 27.0,
     "end_m": 37.0,
     "raw_pct": 21.58,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 48.0,
     "end_m": 53.0,
     "raw_pct": 35.73,
     "reason": "hump+short-step"
    },
    {
     "window_m": 5.0,
     "start_m": 243.0,
     "end_m": 248.0,
     "raw_pct": 30.12,
     "reason": "short-step"
    },
    {
     "window_m": 5.0,
     "start_m": 121.0,
     "end_m": 126.0,
     "raw_pct": 22.16,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": [
    {
     "window_m": 5.0,
     "start_m": 348.0,
     "end_m": 353.0,
     "pct": 21.23,
     "reason": "mask-edge"
    }
   ]
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.358,
   "obstruction_max_height_m": 11.68,
   "flagged_windows_m": [
    2,
    25,
    50
   ]
  },
  "excluded_ranges_m": [
   [
    10.0,
    15.0
   ],
   [
    25.0,
    39.0
   ],
   [
    46.0,
    55.0
   ],
   [
    71.0,
    100.0
   ],
   [
    119.0,
    128.0
   ],
   [
    138.0,
    162.0
   ],
   [
    241.0,
    250.0
   ],
   [
    277.0,
    282.0
   ],
   [
    305.0,
    311.0
   ],
   [
    338.0,
    344.0
   ],
   [
    358.0,
    363.0
   ],
   [
    370.0,
    399.0
   ]
  ],
  "review": [
   "texture_unresolved"
  ],
  "extent": [
   "may_start_earlier"
  ]
 },
 "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:27700",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/wales/dtm_1m/wg_del_20_267202_20220112dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_20_267203_20220112dtm.tif"
  ],
  "calculated_at": "2026-09-12T00:08:56+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-uk-wales/batch-england-rchunk01.pbf",
  "osm_snapshot": "",
  "run_id": "texture-uk-wales-260911",
  "elevation_provider": "Welsh Government",
  "elevation_dataset": "Welsh Government LiDAR 1m DTM (2020-2023)",
  "elevation_licence": "Open Government Licence v3 \u2014 \u00a9 Crown copyright Welsh Government",
  "elevation_catalogue_layer": "geonode:welsh_government_lidar_tile_catalogue_2020_2023",
  "elevation_tile_ids": [
   "wg_del_20_267202_20220112dtm.tif",
   "wg_del_20_267203_20220112dtm.tif"
  ],
  "elevation_capture_dates": [
   "12-01-2022"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Rhyd-y-gwin",
  "county": "Abertawe - Swansea"
 }
}