{
 "ocl_version": "0.1.0",
 "name": "Gilfach Road",
 "slug": "gilfach-road-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 35.34006299527732,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2888.0,
   "end_distance_m": 2890.0,
   "start_elevation_m": 179.3284793419882,
   "end_elevation_m": 180.03528060189376,
   "min_gradient_pct": -98.49119793299508,
   "suppressed_max_gradient_pct": 84.65565014139145,
   "suppressed_location_m": [
    1746.0,
    1748.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 32.74635379970903,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2888.0,
   "end_distance_m": 2891.0,
   "start_elevation_m": 179.3284793419882,
   "end_elevation_m": 180.31086995597948,
   "min_gradient_pct": -75.17726477281836,
   "suppressed_max_gradient_pct": 77.28797399508902,
   "suppressed_location_m": [
    1739.0,
    1742.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 30.021009161555412,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2887.0,
   "end_distance_m": 2892.0,
   "start_elevation_m": 179.06787242465725,
   "end_elevation_m": 180.56892288273502,
   "min_gradient_pct": -30.729197798426355,
   "suppressed_max_gradient_pct": 52.22316665732848,
   "suppressed_location_m": [
    1737.0,
    1742.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.717673167358328,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2886.0,
   "end_distance_m": 2896.0,
   "start_elevation_m": 178.88542254052226,
   "end_elevation_m": 181.1571898572581,
   "min_gradient_pct": -17.967923399010033,
   "suppressed_max_gradient_pct": 24.653053089999588,
   "suppressed_location_m": [
    1732.0,
    1742.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 18.52917584943455,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2765.0,
   "end_distance_m": 2785.0,
   "start_elevation_m": 163.7884099087721,
   "end_elevation_m": 167.49424507865902,
   "min_gradient_pct": -16.951359094141125,
   "suppressed_max_gradient_pct": 21.988463950354316,
   "suppressed_location_m": [
    2554.0,
    2574.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 18.26660745401955,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2766.0,
   "end_distance_m": 2791.0,
   "start_elevation_m": 163.9471623134993,
   "end_elevation_m": 168.51381417700418,
   "min_gradient_pct": -16.34184372885045,
   "suppressed_max_gradient_pct": 21.302098852507925,
   "suppressed_location_m": [
    2554.0,
    2579.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.286105562861337,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2745.0,
   "end_distance_m": 2795.0,
   "start_elevation_m": 160.29963472395934,
   "end_elevation_m": 168.94268750539,
   "min_gradient_pct": -14.677919676352444,
   "suppressed_max_gradient_pct": 18.506435952219704,
   "suppressed_location_m": [
    2528.0,
    2578.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.017657234055207,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2700.0,
   "end_distance_m": 2800.0,
   "start_elevation_m": 153.7354117249854,
   "end_elevation_m": 169.7530689590406,
   "min_gradient_pct": -11.611701514142256
  }
 ],
 "shape": {
  "ascent_concentration": 0.404,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 125.0,
  "shape_class": "sustained"
 },
 "length_m": 4413.847478282071,
 "start_elevation_m": 15.132612432983409,
 "end_elevation_m": 218.9102691085813,
 "endpoint_gain_m": 203.77765667559788,
 "overall_gradient_pct": 4.616780658558481,
 "accumulated_ascent_m": 262.75236180030186,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 30.021009161555412,
   "start_distance_m": 2887.0,
   "end_distance_m": 2892.0,
   "midpoint_distance_m": 2889.5,
   "start_elevation_m": 179.06787242465725,
   "end_elevation_m": 180.56892288273502,
   "start_xy": [
    275235.3448556297,
    200933.7685323842
   ],
   "end_xy": [
    275239.483512465,
    200936.48025310496
   ]
  },
  "max_10m": {
   "gradient_pct": 22.717673167358328,
   "start_distance_m": 2886.0,
   "end_distance_m": 2896.0,
   "midpoint_distance_m": 2891.0,
   "start_elevation_m": 178.88542254052226,
   "end_elevation_m": 181.1571898572581,
   "start_xy": [
    275234.78415393276,
    200932.94097935723
   ],
   "end_xy": [
    275242.95519190346,
    200938.46706955764
   ]
  },
  "max_20m": {
   "gradient_pct": 18.52917584943455,
   "start_distance_m": 2765.0,
   "end_distance_m": 2785.0,
   "midpoint_distance_m": 2775.0,
   "start_elevation_m": 163.7884099087721,
   "end_elevation_m": 167.49424507865902,
   "start_xy": [
    275163.74341327936,
    200835.04339972703
   ],
   "end_xy": [
    275175.7096248754,
    200851.06868315252
   ]
  },
  "max_25m": {
   "gradient_pct": 18.26660745401955,
   "start_distance_m": 2766.0,
   "end_distance_m": 2791.0,
   "midpoint_distance_m": 2778.5,
   "start_elevation_m": 163.9471623134993,
   "end_elevation_m": 168.51381417700418,
   "start_xy": [
    275164.3417998713,
    200835.8446071735
   ],
   "end_xy": [
    275179.304158445,
    200855.87277652405
   ]
  },
  "max_50m": {
   "gradient_pct": 17.286105562861337,
   "start_distance_m": 2745.0,
   "end_distance_m": 2795.0,
   "midpoint_distance_m": 2770.0,
   "start_elevation_m": 160.29963472395934,
   "end_elevation_m": 168.94268750539,
   "start_xy": [
    275151.77756977524,
    200819.01784106973
   ],
   "end_xy": [
    275181.70127726987,
    200859.07493515528
   ]
  },
  "max_100m": {
   "gradient_pct": 16.017657234055207,
   "start_distance_m": 2700.0,
   "end_distance_m": 2800.0,
   "midpoint_distance_m": 2750.0,
   "start_elevation_m": 153.7354117249854,
   "end_elevation_m": 169.7530689590406,
   "start_xy": [
    275132.5375587652,
    200778.6568218727
   ],
   "end_xy": [
    275184.6977679267,
    200863.0775644562
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -30.729197798426355,
   "start_distance_m": 1742.0,
   "end_distance_m": 1747.0,
   "midpoint_distance_m": 1744.5,
   "start_elevation_m": 116.28618295927434,
   "end_elevation_m": 114.74972306935302,
   "start_xy": [
    275102.9345264199,
    199858.05879800767
   ],
   "end_xy": [
    275103.3335307361,
    199863.0428517985
   ]
  },
  "min_10m": {
   "gradient_pct": -17.967923399010033,
   "start_distance_m": 2359.0,
   "end_distance_m": 2369.0,
   "midpoint_distance_m": 2364.0,
   "start_elevation_m": 131.21009936037862,
   "end_elevation_m": 129.41330702047762,
   "start_xy": [
    275144.14815594355,
    200461.7753860553
   ],
   "end_xy": [
    275139.4736679247,
    200470.61232440523
   ]
  },
  "min_20m": {
   "gradient_pct": -16.951359094141125,
   "start_distance_m": 2360.0,
   "end_distance_m": 2380.0,
   "midpoint_distance_m": 2370.0,
   "start_elevation_m": 131.09061511242973,
   "end_elevation_m": 127.7003432936015,
   "start_xy": [
    275143.6237010113,
    200462.62626074397
   ],
   "end_xy": [
    275134.4025037467,
    200480.37364029654
   ]
  },
  "min_25m": {
   "gradient_pct": -16.34184372885045,
   "start_distance_m": 2360.0,
   "end_distance_m": 2385.0,
   "midpoint_distance_m": 2372.5,
   "start_elevation_m": 131.09061511242973,
   "end_elevation_m": 127.00515418021712,
   "start_xy": [
    275143.6237010113,
    200462.62626074397
   ],
   "end_xy": [
    275132.09750352876,
    200484.8106407158
   ]
  },
  "min_50m": {
   "gradient_pct": -14.677919676352444,
   "start_distance_m": 2352.0,
   "end_distance_m": 2402.0,
   "midpoint_distance_m": 2377.0,
   "start_elevation_m": 132.1027608460672,
   "end_elevation_m": 124.76380100789099,
   "start_xy": [
    275148.14657654153,
    200456.02989376913
   ],
   "end_xy": [
    275122.108748356,
    200498.33392324948
   ]
  },
  "min_100m": {
   "gradient_pct": -11.611701514142256,
   "start_distance_m": 3698.0,
   "end_distance_m": 3798.0,
   "midpoint_distance_m": 3748.0,
   "start_elevation_m": 228.51582740623863,
   "end_elevation_m": 216.90412589209637,
   "start_xy": [
    275765.8646289421,
    201443.21677474456
   ],
   "end_xy": [
    275739.99631263036,
    201346.64243146105
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 35.34006299527732,
   "start_distance_m": 2888.0,
   "end_distance_m": 2890.0,
   "midpoint_distance_m": 2889.0,
   "start_elevation_m": 179.3284793419882,
   "end_elevation_m": 180.03528060189376,
   "start_xy": [
    275236.0121858631,
    200934.4928204932
   ],
   "end_xy": [
    275237.74807449116,
    200935.48614304743
   ]
  },
  "max_3m": {
   "gradient_pct": 32.74635379970903,
   "start_distance_m": 2888.0,
   "end_distance_m": 2891.0,
   "midpoint_distance_m": 2889.5,
   "start_elevation_m": 179.3284793419882,
   "end_elevation_m": 180.31086995597948,
   "start_xy": [
    275236.0121858631,
    200934.4928204932
   ],
   "end_xy": [
    275238.61570032605,
    200935.98336067054
   ]
  }
 },
 "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": 0.005,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.048,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.055,
   "windows_resited": [
    20.0,
    25.0,
    50.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 2554.0,
     "end_m": 2579.0,
     "raw_pct": 21.3,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 2554.0,
     "end_m": 2574.0,
     "raw_pct": 21.99,
     "reason": "hump"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.301,
   "obstruction_max_height_m": 35.31,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    1087.0,
    1092.0
   ],
   [
    1737.0,
    1750.0
   ],
   [
    1930.0,
    1990.0
   ],
   [
    2050.0,
    2090.0
   ],
   [
    2100.0,
    2140.0
   ],
   [
    2270.0,
    2320.0
   ],
   [
    2552.0,
    2581.0
   ]
  ],
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "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_14_274201_20210321dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_14_275201_20210321dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_14_276201_20210321dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_27_274198_20220305dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_27_275198_20220305dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_27_276198_20220305dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_5_274199_20201224dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_5_274200_20201224dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_5_275199_20201224dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_5_275200_20201224dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_5_276199_20201224dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_5_276200_20201224dtm.tif"
  ],
  "calculated_at": "2026-09-12T00:09:49+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-uk-wales/batch-england-rchunk00.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_14_274201_20210321dtm.tif",
   "wg_del_14_275201_20210321dtm.tif",
   "wg_del_14_276201_20210321dtm.tif",
   "wg_del_27_274198_20220305dtm.tif",
   "wg_del_27_275198_20220305dtm.tif",
   "wg_del_27_276198_20220305dtm.tif",
   "wg_del_5_274199_20201224dtm.tif",
   "wg_del_5_274200_20201224dtm.tif",
   "wg_del_5_275199_20201224dtm.tif",
   "wg_del_5_275200_20201224dtm.tif",
   "wg_del_5_276199_20201224dtm.tif",
   "wg_del_5_276200_20201224dtm.tif"
  ],
  "elevation_capture_dates": [
   "05-03-2022",
   "24-12-2020",
   "25-12-2020"
  ],
  "climb_origin": "discovered",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Neath",
  "county": "Castell-nedd Port Talbot - Neath Port Talbot"
 }
}