{
 "ocl_version": "0.1.0",
 "name": "Chemin du Rocher d'en Bas",
 "slug": "chemin-du-rocher-d-en-bas",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.83266939564419,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1517.0,
   "end_distance_m": 1519.0,
   "start_elevation_m": 1401.4036925559144,
   "end_elevation_m": 1401.8403459438273,
   "min_gradient_pct": -2.085307609888787
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.253649983926454,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1521.0,
   "end_distance_m": 1524.0,
   "start_elevation_m": 1402.2108042888826,
   "end_elevation_m": 1402.8484137884004,
   "min_gradient_pct": -1.973133093186637
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 20.269381087564398,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1517.0,
   "end_distance_m": 1522.0,
   "start_elevation_m": 1401.4036925559144,
   "end_elevation_m": 1402.4171616102926,
   "min_gradient_pct": -1.2326050394085541
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 19.776785861693043,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1513.0,
   "end_distance_m": 1523.0,
   "start_elevation_m": 1400.6356674769854,
   "end_elevation_m": 1402.6133460631547,
   "min_gradient_pct": -0.8366167447297812
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 19.272670157043876,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1512.0,
   "end_distance_m": 1532.0,
   "start_elevation_m": 1400.4600358685934,
   "end_elevation_m": 1404.3145699000022,
   "min_gradient_pct": -0.16712206506440452
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 18.928380120135444,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1507.0,
   "end_distance_m": 1532.0,
   "start_elevation_m": 1399.5824748699683,
   "end_elevation_m": 1404.3145699000022,
   "min_gradient_pct": 0.07967165646459762
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.511565030335532,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1670.0,
   "end_distance_m": 1720.0,
   "start_elevation_m": 1420.85230081828,
   "end_elevation_m": 1429.1080833334477,
   "min_gradient_pct": 0.9081847182019374
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.198654098696352,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 506.0,
   "end_distance_m": 606.0,
   "start_elevation_m": 1280.374245189153,
   "end_elevation_m": 1295.5728992878494,
   "min_gradient_pct": 4.063629374595621
  }
 ],
 "shape": {
  "ascent_concentration": 0.296,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 442.0,
  "shape_class": "sustained"
 },
 "length_m": 1924.845834397527,
 "start_elevation_m": 1229.6130357827885,
 "end_elevation_m": 1452.1913050449057,
 "endpoint_gain_m": 222.57826926211715,
 "overall_gradient_pct": 11.563433563591534,
 "accumulated_ascent_m": 222.80850406611626,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 20.269381087564398,
   "start_distance_m": 1517.0,
   "end_distance_m": 1522.0,
   "midpoint_distance_m": 1519.5,
   "start_elevation_m": 1401.4036925559144,
   "end_elevation_m": 1402.4171616102926,
   "start_xy": [
    2575414.763929029,
    1134591.3172668407
   ],
   "end_xy": [
    2575409.8080787286,
    1134591.9802467497
   ]
  },
  "max_10m": {
   "gradient_pct": 19.776785861693043,
   "start_distance_m": 1513.0,
   "end_distance_m": 1523.0,
   "midpoint_distance_m": 1518.0,
   "start_elevation_m": 1400.6356674769854,
   "end_elevation_m": 1402.6133460631547,
   "start_xy": [
    2575418.7215294987,
    1134590.7432930216
   ],
   "end_xy": [
    2575408.816964744,
    1134592.1132620475
   ]
  },
  "max_20m": {
   "gradient_pct": 19.272670157043876,
   "start_distance_m": 1512.0,
   "end_distance_m": 1532.0,
   "midpoint_distance_m": 1522.0,
   "start_elevation_m": 1400.4600358685934,
   "end_elevation_m": 1404.3145699000022,
   "start_xy": [
    2575419.701995902,
    1134590.5466589953
   ],
   "end_xy": [
    2575399.8965271586,
    1134593.3073207748
   ]
  },
  "max_25m": {
   "gradient_pct": 18.928380120135444,
   "start_distance_m": 1507.0,
   "end_distance_m": 1532.0,
   "midpoint_distance_m": 1519.5,
   "start_elevation_m": 1399.5824748699683,
   "end_elevation_m": 1404.3145699000022,
   "start_xy": [
    2575424.490156265,
    1134589.2139741816
   ],
   "end_xy": [
    2575399.8965271586,
    1134593.3073207748
   ]
  },
  "max_50m": {
   "gradient_pct": 16.511565030335532,
   "start_distance_m": 1670.0,
   "end_distance_m": 1720.0,
   "midpoint_distance_m": 1695.0,
   "start_elevation_m": 1420.85230081828,
   "end_elevation_m": 1429.1080833334477,
   "start_xy": [
    2575299.905338438,
    1134681.1612140534
   ],
   "end_xy": [
    2575254.5954533266,
    1134701.7923911565
   ]
  },
  "max_100m": {
   "gradient_pct": 15.198654098696352,
   "start_distance_m": 506.0,
   "end_distance_m": 606.0,
   "midpoint_distance_m": 556.0,
   "start_elevation_m": 1280.374245189153,
   "end_elevation_m": 1295.5728992878494,
   "start_xy": [
    2575713.781887228,
    1134354.365397531
   ],
   "end_xy": [
    2575637.588053745,
    1134307.935924958
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.2326050394085541,
   "start_distance_m": 50.0,
   "end_distance_m": 55.0,
   "midpoint_distance_m": 52.5,
   "start_elevation_m": 1233.4149186589566,
   "end_elevation_m": 1233.3532884069862,
   "start_xy": [
    2576101.875113507,
    1134213.7752951111
   ],
   "end_xy": [
    2576096.9401771547,
    1134212.9713054933
   ]
  },
  "min_10m": {
   "gradient_pct": -0.8366167447297812,
   "start_distance_m": 50.0,
   "end_distance_m": 60.0,
   "midpoint_distance_m": 55.0,
   "start_elevation_m": 1233.4149186589566,
   "end_elevation_m": 1233.3312569844836,
   "start_xy": [
    2576101.875113507,
    1134213.7752951111
   ],
   "end_xy": [
    2576092.0051830527,
    1134212.1676710118
   ]
  },
  "min_20m": {
   "gradient_pct": -0.16712206506440452,
   "start_distance_m": 50.0,
   "end_distance_m": 70.0,
   "midpoint_distance_m": 60.0,
   "start_elevation_m": 1233.4149186589566,
   "end_elevation_m": 1233.3814942459437,
   "start_xy": [
    2576101.875113507,
    1134213.7752951111
   ],
   "end_xy": [
    2576082.145612128,
    1134210.499354011
   ]
  },
  "min_25m": {
   "gradient_pct": 0.07967165646459762,
   "start_distance_m": 46.0,
   "end_distance_m": 71.0,
   "midpoint_distance_m": 58.5,
   "start_elevation_m": 1233.3800007070838,
   "end_elevation_m": 1233.3999186212,
   "start_xy": [
    2576105.8230942707,
    1134214.4182919732
   ],
   "end_xy": [
    2576081.1613964476,
    1134210.3223808846
   ]
  },
  "min_50m": {
   "gradient_pct": 0.9081847182019374,
   "start_distance_m": 46.0,
   "end_distance_m": 96.0,
   "midpoint_distance_m": 71.0,
   "start_elevation_m": 1233.3800007070838,
   "end_elevation_m": 1233.8340930661848,
   "start_xy": [
    2576105.8230942707,
    1134214.4182919732
   ],
   "end_xy": [
    2576057.0574512645,
    1134214.4623335355
   ]
  },
  "min_100m": {
   "gradient_pct": 4.063629374595621,
   "start_distance_m": 6.0,
   "end_distance_m": 106.0,
   "midpoint_distance_m": 56.0,
   "start_elevation_m": 1230.319954897832,
   "end_elevation_m": 1234.3835842724277,
   "start_xy": [
    2576141.611856652,
    1134207.592789644
   ],
   "end_xy": [
    2576048.300106777,
    1134219.2854286102
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.83266939564419,
   "start_distance_m": 1517.0,
   "end_distance_m": 1519.0,
   "midpoint_distance_m": 1518.0,
   "start_elevation_m": 1401.4036925559144,
   "end_elevation_m": 1401.8403459438273,
   "start_xy": [
    2575414.763929029,
    1134591.3172668407
   ],
   "end_xy": [
    2575412.7815697133,
    1134591.5823150638
   ]
  },
  "max_3m": {
   "gradient_pct": 21.253649983926454,
   "start_distance_m": 1521.0,
   "end_distance_m": 1524.0,
   "midpoint_distance_m": 1522.5,
   "start_elevation_m": 1402.2108042888826,
   "end_elevation_m": 1402.8484137884004,
   "start_xy": [
    2575410.799295205,
    1134591.847998015
   ],
   "end_xy": [
    2575407.825821842,
    1134592.2460610664
   ]
  }
 },
 "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",
   "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_2575-1134_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2021_2576-1133_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2021_2576-1134_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-11T00:42:01+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-extent-260911",
  "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": [
   "2575-1134",
   "2576-1133",
   "2576-1134"
  ],
  "route_base_cut_m": 1062.7,
  "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": "Ormont-Dessus",
  "county": "Vaud",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}