{
 "ocl_version": "0.1.0",
 "name": "Rotcha",
 "slug": "rotcha",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 32.25183254415356,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1671.0,
   "end_distance_m": 1673.0,
   "start_elevation_m": 799.617835301282,
   "end_elevation_m": 800.262871952165,
   "min_gradient_pct": -8.275146010498702
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.931241461200745,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1670.0,
   "end_distance_m": 1673.0,
   "start_elevation_m": 799.454934708329,
   "end_elevation_m": 800.262871952165,
   "min_gradient_pct": -5.582375259477128
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.00905560193678,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 444.0,
   "end_distance_m": 449.0,
   "start_elevation_m": 688.0833094419712,
   "end_elevation_m": 689.283762222068,
   "min_gradient_pct": -1.1520197600952997
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.56299712718146,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 439.0,
   "end_distance_m": 449.0,
   "start_elevation_m": 687.0274625093499,
   "end_elevation_m": 689.283762222068,
   "min_gradient_pct": 2.6395077830068203
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.470006313915064,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 432.0,
   "end_distance_m": 452.0,
   "start_elevation_m": 685.5885488850126,
   "end_elevation_m": 689.8825501477957,
   "min_gradient_pct": 3.05408639886366
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.516066743382908,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 424.0,
   "end_distance_m": 449.0,
   "start_elevation_m": 683.9047455362223,
   "end_elevation_m": 689.283762222068,
   "min_gradient_pct": 3.7099997485825043
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.408431088565067,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 402.0,
   "end_distance_m": 452.0,
   "start_elevation_m": 679.6783346035131,
   "end_elevation_m": 689.8825501477957,
   "min_gradient_pct": 4.50030500438811
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.806521059076204,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 353.0,
   "end_distance_m": 453.0,
   "start_elevation_m": 672.2283292115553,
   "end_elevation_m": 690.0348502706315,
   "min_gradient_pct": 4.777781913848912
  }
 ],
 "shape": {
  "ascent_concentration": 0.335,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 272.0,
  "shape_class": "sustained"
 },
 "length_m": 1870.957807306308,
 "start_elevation_m": 627.6975820595695,
 "end_elevation_m": 814.9520914294214,
 "endpoint_gain_m": 187.25450936985192,
 "overall_gradient_pct": 10.00848381714442,
 "accumulated_ascent_m": 187.9734108011877,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.00905560193678,
   "start_distance_m": 444.0,
   "end_distance_m": 449.0,
   "midpoint_distance_m": 446.5,
   "start_elevation_m": 688.0833094419712,
   "end_elevation_m": 689.283762222068,
   "start_xy": [
    2566758.0548704998,
    1210753.7880811184
   ],
   "end_xy": [
    2566753.0778607833,
    1210754.2670114706
   ]
  },
  "max_10m": {
   "gradient_pct": 22.56299712718146,
   "start_distance_m": 439.0,
   "end_distance_m": 449.0,
   "midpoint_distance_m": 444.0,
   "start_elevation_m": 687.0274625093499,
   "end_elevation_m": 689.283762222068,
   "start_xy": [
    2566763.031880216,
    1210753.3091507659
   ],
   "end_xy": [
    2566753.0778607833,
    1210754.2670114706
   ]
  },
  "max_20m": {
   "gradient_pct": 21.470006313915064,
   "start_distance_m": 432.0,
   "end_distance_m": 452.0,
   "midpoint_distance_m": 442.0,
   "start_elevation_m": 685.5885488850126,
   "end_elevation_m": 689.8825501477957,
   "start_xy": [
    2566769.9996938193,
    1210752.6386482725
   ],
   "end_xy": [
    2566750.0916549535,
    1210754.5543696822
   ]
  },
  "max_25m": {
   "gradient_pct": 21.516066743382908,
   "start_distance_m": 424.0,
   "end_distance_m": 449.0,
   "midpoint_distance_m": 436.5,
   "start_elevation_m": 683.9047455362223,
   "end_elevation_m": 689.283762222068,
   "start_xy": [
    2566777.9646224375,
    1210751.8906575835
   ],
   "end_xy": [
    2566753.0778607833,
    1210754.2670114706
   ]
  },
  "max_50m": {
   "gradient_pct": 20.408431088565067,
   "start_distance_m": 402.0,
   "end_distance_m": 452.0,
   "midpoint_distance_m": 427.0,
   "start_elevation_m": 679.6783346035131,
   "end_elevation_m": 689.8825501477957,
   "start_xy": [
    2566799.694918034,
    1210748.9000545044
   ],
   "end_xy": [
    2566750.0916549535,
    1210754.5543696822
   ]
  },
  "max_100m": {
   "gradient_pct": 17.806521059076204,
   "start_distance_m": 353.0,
   "end_distance_m": 453.0,
   "midpoint_distance_m": 403.0,
   "start_elevation_m": 672.2283292115553,
   "end_elevation_m": 690.0348502706315,
   "start_xy": [
    2566846.092644791,
    1210733.4882186393
   ],
   "end_xy": [
    2566749.0962530104,
    1210754.6501557527
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.1520197600952997,
   "start_distance_m": 1568.0,
   "end_distance_m": 1573.0,
   "midpoint_distance_m": 1570.5,
   "start_elevation_m": 788.6455321728591,
   "end_elevation_m": 788.5879311848544,
   "start_xy": [
    2567369.6100556604,
    1211637.7139146794
   ],
   "end_xy": [
    2567372.4620497483,
    1211641.8207540629
   ]
  },
  "min_10m": {
   "gradient_pct": 2.6395077830068203,
   "start_distance_m": 454.0,
   "end_distance_m": 464.0,
   "midpoint_distance_m": 459.0,
   "start_elevation_m": 690.1389889605914,
   "end_elevation_m": 690.4029397388921,
   "start_xy": [
    2566748.100851067,
    1210754.745941823
   ],
   "end_xy": [
    2566746.9098168393,
    1210758.8450596964
   ]
  },
  "min_20m": {
   "gradient_pct": 3.05408639886366,
   "start_distance_m": 454.0,
   "end_distance_m": 474.0,
   "midpoint_distance_m": 464.0,
   "start_elevation_m": 690.1389889605914,
   "end_elevation_m": 690.7498062403641,
   "start_xy": [
    2566748.100851067,
    1210754.745941823
   ],
   "end_xy": [
    2566753.9884194145,
    1210765.9085847072
   ]
  },
  "min_25m": {
   "gradient_pct": 3.7099997485825043,
   "start_distance_m": 454.0,
   "end_distance_m": 479.0,
   "midpoint_distance_m": 466.5,
   "start_elevation_m": 690.1389889605914,
   "end_elevation_m": 691.066488897737,
   "start_xy": [
    2566748.100851067,
    1210754.745941823
   ],
   "end_xy": [
    2566757.5277207023,
    1210769.4403472126
   ]
  },
  "min_50m": {
   "gradient_pct": 4.50030500438811,
   "start_distance_m": 1820.0,
   "end_distance_m": 1870.0,
   "midpoint_distance_m": 1845.0,
   "start_elevation_m": 812.6490658344214,
   "end_elevation_m": 814.8992183366155,
   "start_xy": [
    2567573.907988097,
    1211777.1620479955
   ],
   "end_xy": [
    2567592.7816264466,
    1211823.0522098641
   ]
  },
  "min_100m": {
   "gradient_pct": 4.777781913848912,
   "start_distance_m": 1762.0,
   "end_distance_m": 1862.0,
   "midpoint_distance_m": 1812.0,
   "start_elevation_m": 809.7342340100371,
   "end_elevation_m": 814.512015923886,
   "start_xy": [
    2567531.434384532,
    1211739.4289408063
   ],
   "end_xy": [
    2567591.3161531147,
    1211815.192189396
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 32.25183254415356,
   "start_distance_m": 1671.0,
   "end_distance_m": 1673.0,
   "midpoint_distance_m": 1672.0,
   "start_elevation_m": 799.617835301282,
   "end_elevation_m": 800.262871952165,
   "start_xy": [
    2567448.655255538,
    1211702.0016128486
   ],
   "end_xy": [
    2567450.3844718263,
    1211703.0065063902
   ]
  },
  "max_3m": {
   "gradient_pct": 26.931241461200745,
   "start_distance_m": 1670.0,
   "end_distance_m": 1673.0,
   "midpoint_distance_m": 1671.5,
   "start_elevation_m": 799.454934708329,
   "end_elevation_m": 800.262871952165,
   "start_xy": [
    2567447.790647394,
    1211701.499166078
   ],
   "end_xy": [
    2567450.3844718263,
    1211703.0065063902
   ]
  }
 },
 "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": {
  "review": [],
  "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:2056",
  "elevation_resolution_m": 0.5,
  "elevation_tiles": [
   "data/cache/ch/swissalti3d_2021_2566-1210_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2021_2566-1211_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2021_2567-1210_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2021_2567-1211_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-10T19:25:32+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/switzerland-2026-09-10-batch.osm.pbf",
  "osm_snapshot": "",
  "run_id": "ch-run6-260910",
  "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": [
   "2566-1210",
   "2566-1211",
   "2567-1210",
   "2567-1211"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 no surface model (DSM or point cloud) registered for this coverage",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Cressier (NE)",
  "county": "Neuch\u00e2tel",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}