{
 "ocl_version": "0.1.0",
 "name": "Porteineralpstrasse",
 "slug": "porteineralpstrasse",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 39.25612412855344,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1505.0,
   "end_distance_m": 1507.0,
   "start_elevation_m": 1395.851995175871,
   "end_elevation_m": 1396.637117658442,
   "min_gradient_pct": -64.17919336093973,
   "suppressed_max_gradient_pct": 167.88444811352292,
   "suppressed_location_m": [
    676.0,
    678.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 38.34404619861592,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1505.0,
   "end_distance_m": 1508.0,
   "start_elevation_m": 1395.851995175871,
   "end_elevation_m": 1397.0023165618295,
   "min_gradient_pct": -55.08266423782212,
   "suppressed_max_gradient_pct": 111.03806248065666,
   "suppressed_location_m": [
    676.0,
    679.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 30.511693896924044,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1890.0,
   "end_distance_m": 1895.0,
   "start_elevation_m": 1437.1030707034768,
   "end_elevation_m": 1438.628655398323,
   "min_gradient_pct": -46.20068581293708,
   "suppressed_max_gradient_pct": 87.38675691674871,
   "suppressed_location_m": [
    676.0,
    681.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.782804712043344,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 1885.0,
   "end_distance_m": 1895.0,
   "start_elevation_m": 1436.2503749271186,
   "end_elevation_m": 1438.628655398323,
   "min_gradient_pct": -31.829607153565576,
   "suppressed_max_gradient_pct": 52.62401210472035,
   "suppressed_location_m": [
    676.0,
    686.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 18.84486364966733,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 2674.0,
   "end_distance_m": 2694.0,
   "start_elevation_m": 1535.5335610595978,
   "end_elevation_m": 1539.3025337895313,
   "min_gradient_pct": -19.50813412263301,
   "suppressed_max_gradient_pct": 39.815446365130356,
   "suppressed_location_m": [
    2615.0,
    2635.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 17.736499711699253,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 2715.0,
   "end_distance_m": 2740.0,
   "start_elevation_m": 1541.011866782555,
   "end_elevation_m": 1545.4459917104798,
   "min_gradient_pct": -13.644899178458218,
   "suppressed_max_gradient_pct": 37.54559267069817,
   "suppressed_location_m": [
    2614.0,
    2639.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.357200010771066,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 2707.0,
   "end_distance_m": 2757.0,
   "start_elevation_m": 1539.711208917686,
   "end_elevation_m": 1547.8898089230715,
   "min_gradient_pct": -2.7710548826203194,
   "suppressed_max_gradient_pct": 28.98457070967288,
   "suppressed_location_m": [
    2614.0,
    2664.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.53234693220088,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 2342.0,
   "end_distance_m": 2442.0,
   "start_elevation_m": 1486.395970986326,
   "end_elevation_m": 1501.9283179185268,
   "min_gradient_pct": -0.6978035130302942,
   "suppressed_max_gradient_pct": 21.608049529656,
   "suppressed_location_m": [
    2594.0,
    2694.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.299,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 417.0,
  "shape_class": "sustained"
 },
 "length_m": 2789.0427949853406,
 "start_elevation_m": 1240.6622348242186,
 "end_elevation_m": 1552.2351561562568,
 "endpoint_gain_m": 311.5729213320383,
 "overall_gradient_pct": 11.17132092387546,
 "accumulated_ascent_m": 325.50856349863375,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 30.511693896924044,
   "start_distance_m": 1890.0,
   "end_distance_m": 1895.0,
   "midpoint_distance_m": 1892.5,
   "start_elevation_m": 1437.1030707034768,
   "end_elevation_m": 1438.628655398323,
   "start_xy": [
    2749429.2558592046,
    1175418.2710389297
   ],
   "end_xy": [
    2749431.4199759737,
    1175413.763645893
   ]
  },
  "max_10m": {
   "gradient_pct": 23.782804712043344,
   "start_distance_m": 1885.0,
   "end_distance_m": 1895.0,
   "midpoint_distance_m": 1890.0,
   "start_elevation_m": 1436.2503749271186,
   "end_elevation_m": 1438.628655398323,
   "start_xy": [
    2749427.0920156683,
    1175422.778563203
   ],
   "end_xy": [
    2749431.4199759737,
    1175413.763645893
   ]
  },
  "max_20m": {
   "gradient_pct": 18.84486364966733,
   "start_distance_m": 2674.0,
   "end_distance_m": 2694.0,
   "midpoint_distance_m": 2684.0,
   "start_elevation_m": 1535.5335610595978,
   "end_elevation_m": 1539.3025337895313,
   "start_xy": [
    2749100.128596604,
    1174981.7196603809
   ],
   "end_xy": [
    2749099.6670800266,
    1174961.7790291796
   ]
  },
  "max_25m": {
   "gradient_pct": 17.736499711699253,
   "start_distance_m": 2715.0,
   "end_distance_m": 2740.0,
   "midpoint_distance_m": 2727.5,
   "start_elevation_m": 1541.011866782555,
   "end_elevation_m": 1545.4459917104798,
   "start_xy": [
    2749080.469488052,
    1174969.663520466
   ],
   "end_xy": [
    2749057.547962422,
    1174979.6436779406
   ]
  },
  "max_50m": {
   "gradient_pct": 16.357200010771066,
   "start_distance_m": 2707.0,
   "end_distance_m": 2757.0,
   "midpoint_distance_m": 2732.0,
   "start_elevation_m": 1539.711208917686,
   "end_elevation_m": 1547.8898089230715,
   "start_xy": [
    2749087.804571987,
    1174966.470319744
   ],
   "end_xy": [
    2749051.2657641536,
    1174992.43160225
   ]
  },
  "max_100m": {
   "gradient_pct": 15.53234693220088,
   "start_distance_m": 2342.0,
   "end_distance_m": 2442.0,
   "midpoint_distance_m": 2392.0,
   "start_elevation_m": 1486.395970986326,
   "end_elevation_m": 1501.9283179185268,
   "start_xy": [
    2749222.6148864464,
    1175246.7405709287
   ],
   "end_xy": [
    2749177.835361087,
    1175169.625563745
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -46.20068581293708,
   "start_distance_m": 670.0,
   "end_distance_m": 675.0,
   "midpoint_distance_m": 672.5,
   "start_elevation_m": 1289.6033620695523,
   "end_elevation_m": 1287.2933277789055,
   "start_xy": [
    2749938.866607907,
    1175124.1469753569
   ],
   "end_xy": [
    2749934.5746500124,
    1175121.5820005322
   ]
  },
  "min_10m": {
   "gradient_pct": -31.829607153565576,
   "start_distance_m": 2582.0,
   "end_distance_m": 2592.0,
   "midpoint_distance_m": 2587.0,
   "start_elevation_m": 1520.9710406866861,
   "end_elevation_m": 1517.7880799713296,
   "start_xy": [
    2749161.7404847676,
    1175035.6677677166
   ],
   "end_xy": [
    2749159.181696332,
    1175026.2270369753
   ]
  },
  "min_20m": {
   "gradient_pct": -19.50813412263301,
   "start_distance_m": 2574.0,
   "end_distance_m": 2594.0,
   "midpoint_distance_m": 2584.0,
   "start_elevation_m": 1521.5961110844019,
   "end_elevation_m": 1517.6944842598753,
   "start_xy": [
    2749161.744,
    1175043.667765959
   ],
   "end_xy": [
    2749158.3001117776,
    1175024.4318190375
   ]
  },
  "min_25m": {
   "gradient_pct": -13.644899178458218,
   "start_distance_m": 2570.0,
   "end_distance_m": 2595.0,
   "midpoint_distance_m": 2582.5,
   "start_elevation_m": 1521.187716489168,
   "end_elevation_m": 1517.7764916945534,
   "start_xy": [
    2749161.746,
    1175047.667764959
   ],
   "end_xy": [
    2749157.860112658,
    1175023.5338208335
   ]
  },
  "min_50m": {
   "gradient_pct": -2.7710548826203194,
   "start_distance_m": 208.0,
   "end_distance_m": 258.0,
   "midpoint_distance_m": 233.0,
   "start_elevation_m": 1252.6475245471197,
   "end_elevation_m": 1251.2619971058095,
   "start_xy": [
    2750105.102605752,
    1174968.4131669453
   ],
   "end_xy": [
    2750058.7677330473,
    1174986.5671253647
   ]
  },
  "min_100m": {
   "gradient_pct": -0.6978035130302942,
   "start_distance_m": 174.0,
   "end_distance_m": 274.0,
   "midpoint_distance_m": 224.0,
   "start_elevation_m": 1251.9623048681938,
   "end_elevation_m": 1251.2645013551635,
   "start_xy": [
    2750129.592922984,
    1174945.0390832543
   ],
   "end_xy": [
    2750043.3797140946,
    1174990.7450653918
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 39.25612412855344,
   "start_distance_m": 1505.0,
   "end_distance_m": 1507.0,
   "midpoint_distance_m": 1506.0,
   "start_elevation_m": 1395.851995175871,
   "end_elevation_m": 1396.637117658442,
   "start_xy": [
    2749572.213442207,
    1175423.9178237685
   ],
   "end_xy": [
    2749570.2163605755,
    1175424.0258281853
   ]
  },
  "max_3m": {
   "gradient_pct": 38.34404619861592,
   "start_distance_m": 1505.0,
   "end_distance_m": 1508.0,
   "midpoint_distance_m": 1506.5,
   "start_elevation_m": 1395.851995175871,
   "end_elevation_m": 1397.0023165618295,
   "start_xy": [
    2749572.213442207,
    1175423.9178237685
   ],
   "end_xy": [
    2749569.217819229,
    1175424.0798205822
   ]
  }
 },
 "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": 0.012,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.049,
   "windows_resited": [
    2.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 3,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 2614.0,
     "end_m": 2639.0,
     "raw_pct": 37.55,
     "reason": "spike+hump"
    },
    {
     "window_m": 20.0,
     "start_m": 2615.0,
     "end_m": 2635.0,
     "raw_pct": 39.82,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 2614.0,
     "end_m": 2624.0,
     "raw_pct": 46.29,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 2617.0,
     "end_m": 2622.0,
     "raw_pct": 53.23,
     "reason": "hump"
    },
    {
     "window_m": 25.0,
     "start_m": 1081.0,
     "end_m": 1106.0,
     "raw_pct": 21.73,
     "reason": "hump"
    },
    {
     "window_m": 20.0,
     "start_m": 1081.0,
     "end_m": 1101.0,
     "raw_pct": 23.76,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 1081.0,
     "end_m": 1091.0,
     "raw_pct": 33.27,
     "reason": "hump+short-step"
    },
    {
     "window_m": 5.0,
     "start_m": 1084.0,
     "end_m": 1089.0,
     "raw_pct": 45.59,
     "reason": "hump"
    },
    {
     "window_m": 25.0,
     "start_m": 2642.0,
     "end_m": 2667.0,
     "raw_pct": 19.55,
     "reason": "mask-edge"
    },
    {
     "window_m": 20.0,
     "start_m": 2644.0,
     "end_m": 2664.0,
     "raw_pct": 20.68,
     "reason": "mask-edge"
    },
    {
     "window_m": 10.0,
     "start_m": 1865.0,
     "end_m": 1875.0,
     "raw_pct": 24.08,
     "reason": "hump"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "excluded_ranges_m": [
   [
    360.0,
    367.0
   ],
   [
    674.0,
    683.0
   ],
   [
    1079.0,
    1108.0
   ],
   [
    1851.0,
    1858.0
   ],
   [
    1863.0,
    1877.0
   ],
   [
    2582.0,
    2588.0
   ],
   [
    2612.0,
    2669.0
   ]
  ],
  "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:2056",
  "elevation_resolution_m": 0.5,
  "elevation_tiles": [
   "data/cache/ch/swissalti3d_2023_2749-1174_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2023_2749-1175_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2023_2750-1174_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2023_2750-1175_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-15T04:24:31+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/spike-remeasure/batch-switzerland.pbf",
  "osm_snapshot": "",
  "run_id": "spike-remeasure-260915",
  "elevation_provider": "swisstopo swissALTI3D",
  "elevation_licence": "swisstopo open government data (OGD): free use, attribution '\u00a9 swisstopo' \u2014 https://www.swisstopo.admin.ch/en/terms-and-conditions",
  "elevation_dataset": "swissALTI3D 0.5 m DTM (Federal Office of Topography swisstopo)",
  "elevation_tile_ids": [
   "2749-1174",
   "2749-1175",
   "2750-1174",
   "2750-1175"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 no surface model (DSM or point cloud) registered for this coverage",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Cazis",
  "county": "Graub\u00fcnden/Grischun/Grigioni",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}