{
 "ocl_version": "0.1.0",
 "name": "Underwood Road",
 "slug": "underwood-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.851743168314442,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2474.0,
   "end_distance_m": 2476.0,
   "start_elevation_m": 626.6964529504048,
   "end_elevation_m": 627.1534878137711,
   "min_gradient_pct": -56.98453989279528,
   "suppressed_max_gradient_pct": 63.37466867076671,
   "suppressed_location_m": [
    179.0,
    181.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.5253316152551,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2477.0,
   "end_distance_m": 2480.0,
   "start_elevation_m": 627.3596030066542,
   "end_elevation_m": 628.0353629551119,
   "min_gradient_pct": -37.9266436491946,
   "suppressed_max_gradient_pct": 45.76859456400749,
   "suppressed_location_m": [
    4.0,
    7.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.00738332038327,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2474.0,
   "end_distance_m": 2479.0,
   "start_elevation_m": 626.6964529504048,
   "end_elevation_m": 627.796822116424,
   "min_gradient_pct": -22.1417854258209,
   "suppressed_max_gradient_pct": 44.31186347821949,
   "suppressed_location_m": [
    2.0,
    7.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.482087149455538,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 2470.0,
   "end_distance_m": 2480.0,
   "start_elevation_m": 625.8871542401663,
   "end_elevation_m": 628.0353629551119,
   "min_gradient_pct": -6.7438486483393945,
   "suppressed_max_gradient_pct": 27.896731669389965,
   "suppressed_location_m": [
    0.0,
    10.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.748860709489918,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2465.0,
   "end_distance_m": 2485.0,
   "start_elevation_m": 624.8561507846646,
   "end_elevation_m": 629.0059229265626,
   "min_gradient_pct": 0.4302377919850642
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.597374124513408,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2467.0,
   "end_distance_m": 2492.0,
   "start_elevation_m": 625.2396822069593,
   "end_elevation_m": 630.3890257380876,
   "min_gradient_pct": 0.5689478505375973
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.755741334605318,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2452.0,
   "end_distance_m": 2502.0,
   "start_elevation_m": 622.4490639590471,
   "end_elevation_m": 632.3269346263497,
   "min_gradient_pct": 1.0720468722951182
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.197912095651304,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 2408.0,
   "end_distance_m": 2508.0,
   "start_elevation_m": 614.2077012373545,
   "end_elevation_m": 633.4056133330058,
   "min_gradient_pct": 1.8912413078408576
  }
 ],
 "shape": {
  "ascent_concentration": 0.312,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 189.0,
  "shape_class": "sustained"
 },
 "length_m": 2533.872073461381,
 "start_elevation_m": 451.90588888674847,
 "end_elevation_m": 636.266655821107,
 "endpoint_gain_m": 184.36076693435848,
 "overall_gradient_pct": 7.275851408019724,
 "accumulated_ascent_m": 185.73310730934963,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.00738332038327,
   "start_distance_m": 2474.0,
   "end_distance_m": 2479.0,
   "midpoint_distance_m": 2476.5,
   "start_elevation_m": 626.6964529504048,
   "end_elevation_m": 627.796822116424,
   "start_xy": [
    718694.3322062995,
    4671192.7071360005
   ],
   "end_xy": [
    718698.8401484123,
    4671190.544163789
   ]
  },
  "max_10m": {
   "gradient_pct": 21.482087149455538,
   "start_distance_m": 2470.0,
   "end_distance_m": 2480.0,
   "midpoint_distance_m": 2475.0,
   "start_elevation_m": 625.8871542401663,
   "end_elevation_m": 628.0353629551119,
   "start_xy": [
    718690.6861600648,
    4671194.340017982
   ],
   "end_xy": [
    718699.741681005,
    4671190.111452615
   ]
  },
  "max_20m": {
   "gradient_pct": 20.748860709489918,
   "start_distance_m": 2465.0,
   "end_distance_m": 2485.0,
   "midpoint_distance_m": 2475.0,
   "start_elevation_m": 624.8561507846646,
   "end_elevation_m": 629.0059229265626,
   "start_xy": [
    718685.8136170788,
    4671195.459020129
   ],
   "end_xy": [
    718704.2496238082,
    4671187.948480039
   ]
  },
  "max_25m": {
   "gradient_pct": 20.597374124513408,
   "start_distance_m": 2467.0,
   "end_distance_m": 2492.0,
   "midpoint_distance_m": 2479.5,
   "start_elevation_m": 625.2396822069593,
   "end_elevation_m": 630.3890257380876,
   "start_xy": [
    718687.7639218835,
    4671195.01595104
   ],
   "end_xy": [
    718710.1970918179,
    4671184.292262669
   ]
  },
  "max_50m": {
   "gradient_pct": 19.755741334605318,
   "start_distance_m": 2452.0,
   "end_distance_m": 2502.0,
   "midpoint_distance_m": 2477.0,
   "start_elevation_m": 622.4490639590471,
   "end_elevation_m": 632.3269346263497,
   "start_xy": [
    718673.1366205792,
    4671198.338901776
   ],
   "end_xy": [
    718718.1399540243,
    4671178.235078795
   ]
  },
  "max_100m": {
   "gradient_pct": 19.197912095651304,
   "start_distance_m": 2408.0,
   "end_distance_m": 2508.0,
   "midpoint_distance_m": 2458.0,
   "start_elevation_m": 614.2077012373545,
   "end_elevation_m": 633.4056133330058,
   "start_xy": [
    718630.2816654574,
    4671208.294021746
   ],
   "end_xy": [
    718722.7002197724,
    4671174.33585151
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -22.1417854258209,
   "start_distance_m": 174.0,
   "end_distance_m": 179.0,
   "midpoint_distance_m": 176.5,
   "start_elevation_m": 460.1390411820311,
   "end_elevation_m": 459.0319519107401,
   "start_xy": [
    717195.7916722758,
    4672741.6403683005
   ],
   "end_xy": [
    717199.4359876915,
    4672738.2170719225
   ]
  },
  "min_10m": {
   "gradient_pct": -6.7438486483393945,
   "start_distance_m": 169.0,
   "end_distance_m": 179.0,
   "midpoint_distance_m": 174.0,
   "start_elevation_m": 459.706336775574,
   "end_elevation_m": 459.0319519107401,
   "start_xy": [
    717192.1463892041,
    4672745.062634821
   ],
   "end_xy": [
    717199.4359876915,
    4672738.2170719225
   ]
  },
  "min_20m": {
   "gradient_pct": 0.4302377919850642,
   "start_distance_m": 115.0,
   "end_distance_m": 135.0,
   "midpoint_distance_m": 125.0,
   "start_elevation_m": 457.4140184952995,
   "end_elevation_m": 457.5000660536965,
   "start_xy": [
    717153.264393378,
    4672782.528608842
   ],
   "end_xy": [
    717167.4768371156,
    4672768.457173466
   ]
  },
  "min_25m": {
   "gradient_pct": 0.5689478505375973,
   "start_distance_m": 60.0,
   "end_distance_m": 85.0,
   "midpoint_distance_m": 72.5,
   "start_elevation_m": 456.1775603952529,
   "end_elevation_m": 456.3197973578873,
   "start_xy": [
    717114.3643163893,
    4672821.405673141
   ],
   "end_xy": [
    717131.9017912066,
    4672803.59122211
   ]
  },
  "min_50m": {
   "gradient_pct": 1.0720468722951182,
   "start_distance_m": 50.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 75.0,
   "start_elevation_m": 455.9722415394315,
   "end_elevation_m": 456.50826497557904,
   "start_xy": [
    717107.4086707326,
    4672828.590308066
   ],
   "end_xy": [
    717142.5975124643,
    4672793.074496161
   ]
  },
  "min_100m": {
   "gradient_pct": 1.8912413078408576,
   "start_distance_m": 32.0,
   "end_distance_m": 132.0,
   "midpoint_distance_m": 82.0,
   "start_elevation_m": 455.51346239452744,
   "end_elevation_m": 457.4047037023683,
   "start_xy": [
    717095.3502888001,
    4672841.928635982
   ],
   "end_xy": [
    717165.342061136,
    4672770.564952277
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.851743168314442,
   "start_distance_m": 2474.0,
   "end_distance_m": 2476.0,
   "midpoint_distance_m": 2475.0,
   "start_elevation_m": 626.6964529504048,
   "end_elevation_m": 627.1534878137711,
   "start_xy": [
    718694.3322062995,
    4671192.7071360005
   ],
   "end_xy": [
    718696.1355877888,
    4671191.84237346
   ]
  },
  "max_3m": {
   "gradient_pct": 22.5253316152551,
   "start_distance_m": 2477.0,
   "end_distance_m": 2480.0,
   "midpoint_distance_m": 2478.5,
   "start_elevation_m": 627.3596030066542,
   "end_elevation_m": 628.0353629551119,
   "start_xy": [
    718697.0369794751,
    4671191.409369032
   ],
   "end_xy": [
    718699.741681005,
    4671190.111452615
   ]
  }
 },
 "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": 0.004,
   "windows_resited": [
    2.0
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.009,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 10.0,
     "start_m": 0.0,
     "end_m": 10.0,
     "raw_pct": 27.9,
     "reason": "edge-step+short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.23,
   "obstruction_max_height_m": 27.91,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    0.0,
    12.0
   ],
   [
    174.0,
    182.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier",
   "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:26917",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/ny-west/USGS_one_meter_x71y468_NY_Southwest_B2_2017.tif"
  ],
  "calculated_at": "2026-09-11T23:00:09+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/texture-us-ny/batch-usa-rchunk03.pbf",
  "osm_snapshot": "",
  "run_id": "texture-us-ny-260911",
  "elevation_provider": "USGS 3DEP (The National Map)",
  "elevation_licence": "Public domain \u2014 USGS 3DEP 1 m DEM, courtesy of the U.S. Geological Survey",
  "elevation_dataset": "USGS 3DEP 1 m DEM, NY_Southwest_B2_2017 (collected 2017)",
  "elevation_tile_ids": [
   "x71y468"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/NY_Southwest_B2_2017",
   "ept_crs": "EPSG:3857",
   "station_coverage": 0.998,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Hinsdale",
  "county": "New York"
 }
}