{
 "ocl_version": "0.1.0",
 "name": "Chemin des Ch\u00eanes",
 "slug": "chemin-des-chenes",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 39.29228329237162,
   "diagnostic": true,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 233.0,
   "end_distance_m": 235.0,
   "start_elevation_m": 576.7607359190358,
   "end_elevation_m": 577.5465815848833,
   "min_gradient_pct": -4.393844884822329,
   "suppressed_max_gradient_pct": 50.36506951556703,
   "suppressed_location_m": [
    227.0,
    229.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 37.68359861461855,
   "diagnostic": true,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 232.0,
   "end_distance_m": 235.0,
   "start_elevation_m": 576.4160736264447,
   "end_elevation_m": 577.5465815848833,
   "min_gradient_pct": -3.0719739477338712,
   "suppressed_max_gradient_pct": 44.70755468479032,
   "suppressed_location_m": [
    226.0,
    229.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 35.77673632275264,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 253.0,
   "end_distance_m": 258.0,
   "start_elevation_m": 580.0093250949493,
   "end_elevation_m": 581.7981619110869,
   "min_gradient_pct": -0.6640995160319108,
   "suppressed_max_gradient_pct": 38.00826627470997,
   "suppressed_location_m": [
    224.0,
    229.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 28.9664323605939,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 251.0,
   "end_distance_m": 261.0,
   "start_elevation_m": 579.7014898834088,
   "end_elevation_m": 582.5981331194682,
   "min_gradient_pct": 7.24152901011621,
   "suppressed_max_gradient_pct": 34.874387362482366,
   "suppressed_location_m": [
    225.0,
    235.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.0180312574563,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 103.0,
   "end_distance_m": 123.0,
   "start_elevation_m": 548.4127761714334,
   "end_elevation_m": 553.2163824229247,
   "min_gradient_pct": 15.06796108176502,
   "suppressed_max_gradient_pct": 29.050191570324273,
   "suppressed_location_m": [
    220.0,
    240.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.944348008329143,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 103.0,
   "end_distance_m": 128.0,
   "start_elevation_m": 548.4127761714334,
   "end_elevation_m": 554.3988631735157,
   "min_gradient_pct": 16.337348846638633,
   "suppressed_max_gradient_pct": 27.136762427379836,
   "suppressed_location_m": [
    215.0,
    240.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.226763552450166,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 87.0,
   "end_distance_m": 137.0,
   "start_elevation_m": 544.7545188763947,
   "end_elevation_m": 556.3679006526198,
   "min_gradient_pct": 19.07367687395208,
   "suppressed_max_gradient_pct": 24.174707273452213,
   "suppressed_location_m": [
    190.0,
    240.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 21.57784895026998,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 36.0,
   "end_distance_m": 136.0,
   "start_elevation_m": 534.6096221153088,
   "end_elevation_m": 556.1874710655787,
   "min_gradient_pct": 20.29089350490517,
   "suppressed_max_gradient_pct": 22.239334277026614,
   "suppressed_location_m": [
    143.0,
    243.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.272,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 250.0,
  "shape_class": "sustained"
 },
 "length_m": 268.00000000015393,
 "start_elevation_m": 527.0188862246237,
 "end_elevation_m": 583.6531613469722,
 "endpoint_gain_m": 56.63427512234853,
 "overall_gradient_pct": 21.1321922098194,
 "accumulated_ascent_m": 56.875064763737214,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 35.77673632275264,
   "start_distance_m": 253.0,
   "end_distance_m": 258.0,
   "midpoint_distance_m": 255.5,
   "start_elevation_m": 580.0093250949493,
   "end_elevation_m": 581.7981619110869,
   "start_xy": [
    2543608.8395519755,
    1150920.856300231
   ],
   "end_xy": [
    2543613.4992082594,
    1150922.6694738178
   ]
  },
  "max_10m": {
   "gradient_pct": 28.9664323605939,
   "start_distance_m": 251.0,
   "end_distance_m": 261.0,
   "midpoint_distance_m": 256.0,
   "start_elevation_m": 579.7014898834088,
   "end_elevation_m": 582.5981331194682,
   "start_xy": [
    2543607.2993520596,
    1150919.6128384627
   ],
   "end_xy": [
    2543616.2947223247,
    1150923.7580971876
   ]
  },
  "max_20m": {
   "gradient_pct": 24.0180312574563,
   "start_distance_m": 103.0,
   "end_distance_m": 123.0,
   "midpoint_distance_m": 113.0,
   "start_elevation_m": 548.4127761714334,
   "end_elevation_m": 553.2163824229247,
   "start_xy": [
    2543510.5628853114,
    1150863.180338841
   ],
   "end_xy": [
    2543525.1207149085,
    1150849.466494598
   ]
  },
  "max_25m": {
   "gradient_pct": 23.944348008329143,
   "start_distance_m": 103.0,
   "end_distance_m": 128.0,
   "midpoint_distance_m": 115.5,
   "start_elevation_m": 548.4127761714334,
   "end_elevation_m": 554.3988631735157,
   "start_xy": [
    2543510.5628853114,
    1150863.180338841
   ],
   "end_xy": [
    2543528.759693134,
    1150846.0375250045
   ]
  },
  "max_50m": {
   "gradient_pct": 23.226763552450166,
   "start_distance_m": 87.0,
   "end_distance_m": 137.0,
   "midpoint_distance_m": 112.0,
   "start_elevation_m": 544.7545188763947,
   "end_elevation_m": 556.3679006526198,
   "start_xy": [
    2543499.3011531876,
    1150874.5193341775
   ],
   "end_xy": [
    2543535.310817995,
    1150839.8664022738
   ]
  },
  "max_100m": {
   "gradient_pct": 21.57784895026998,
   "start_distance_m": 36.0,
   "end_distance_m": 136.0,
   "midpoint_distance_m": 86.0,
   "start_elevation_m": 534.6096221153088,
   "end_elevation_m": 556.1874710655787,
   "start_xy": [
    2543466.0560643626,
    1150913.1944374435
   ],
   "end_xy": [
    2543534.5830290234,
    1150840.5522034203
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.6640995160319108,
   "start_distance_m": 247.0,
   "end_distance_m": 252.0,
   "midpoint_distance_m": 249.5,
   "start_elevation_m": 579.7691181884742,
   "end_elevation_m": 579.7359132126726,
   "start_xy": [
    2543604.5382107366,
    1150916.7186903807
   ],
   "end_xy": [
    2543608.0147358975,
    1150920.3091614812
   ]
  },
  "min_10m": {
   "gradient_pct": 7.24152901011621,
   "start_distance_m": 242.0,
   "end_distance_m": 252.0,
   "midpoint_distance_m": 247.0,
   "start_elevation_m": 579.011760311661,
   "end_elevation_m": 579.7359132126726,
   "start_xy": [
    2543601.0864974475,
    1150913.1012784813
   ],
   "end_xy": [
    2543608.0147358975,
    1150920.3091614812
   ]
  },
  "min_20m": {
   "gradient_pct": 15.06796108176502,
   "start_distance_m": 135.0,
   "end_distance_m": 155.0,
   "midpoint_distance_m": 145.0,
   "start_elevation_m": 555.9881262968133,
   "end_elevation_m": 559.0017185131663,
   "start_xy": [
    2543533.8547436916,
    1150841.237477433
   ],
   "end_xy": [
    2543546.925714913,
    1150845.2431437215
   ]
  },
  "min_25m": {
   "gradient_pct": 16.337348846638633,
   "start_distance_m": 131.0,
   "end_distance_m": 156.0,
   "midpoint_distance_m": 143.5,
   "start_elevation_m": 555.1201222582988,
   "end_elevation_m": 559.2044594699585,
   "start_xy": [
    2543530.943556585,
    1150843.9806488848
   ],
   "end_xy": [
    2543547.5128579815,
    1150846.0526268568
   ]
  },
  "min_50m": {
   "gradient_pct": 19.07367687395208,
   "start_distance_m": 134.0,
   "end_distance_m": 184.0,
   "midpoint_distance_m": 159.0,
   "start_elevation_m": 555.7784276175636,
   "end_elevation_m": 565.3152660545396,
   "start_xy": [
    2543533.126952154,
    1150841.923275855
   ],
   "end_xy": [
    2543563.939836304,
    1150868.7275969447
   ]
  },
  "min_100m": {
   "gradient_pct": 20.29089350490517,
   "start_distance_m": 121.0,
   "end_distance_m": 221.0,
   "midpoint_distance_m": 171.0,
   "start_elevation_m": 552.7460105143512,
   "end_elevation_m": 573.0369040192563,
   "start_xy": [
    2543523.6646429403,
    1150850.8375722335
   ],
   "end_xy": [
    2543586.588610789,
    1150897.9088083939
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 39.29228329237162,
   "start_distance_m": 233.0,
   "end_distance_m": 235.0,
   "midpoint_distance_m": 234.0,
   "start_elevation_m": 576.7607359190358,
   "end_elevation_m": 577.5465815848833,
   "start_xy": [
    2543594.8732870976,
    1150906.5900577663
   ],
   "end_xy": [
    2543596.253746626,
    1150908.0372381434
   ]
  },
  "max_3m": {
   "gradient_pct": 37.68359861461855,
   "start_distance_m": 232.0,
   "end_distance_m": 235.0,
   "midpoint_distance_m": 233.5,
   "start_elevation_m": 576.4160736264447,
   "end_elevation_m": 577.5465815848833,
   "start_xy": [
    2543594.1826535654,
    1150905.8668531515
   ],
   "end_xy": [
    2543596.253746626,
    1150908.0372381434
   ]
  }
 },
 "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": 0.115,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.152,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 5.0,
     "start_m": 224.0,
     "end_m": 229.0,
     "raw_pct": 38.01,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "excluded_ranges_m": [
   [
    0.0,
    30.0
   ],
   [
    222.0,
    231.0
   ]
  ],
  "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:2056",
  "elevation_resolution_m": 0.5,
  "elevation_tiles": [
   "data/cache/ch/swissalti3d_2021_2543-1150_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2021_2543-1151_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-15T04:06:22+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/switzerland-2026-09-10.osm.pbf",
  "osm_snapshot": "2026-09-09T20:21:20Z",
  "run_id": "retro-260914",
  "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": [
   "2543-1150",
   "2543-1151"
  ],
  "route_cut_m": 268.0,
  "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",
  "structure_mask_ranges_m": [
   [
    0.0,
    15.3
   ]
  ],
  "mask_basin_extension_m": 10.0,
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Lutry",
  "county": "Vaud",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}