{
 "ocl_version": "0.1.0",
 "name": "Chemin de la Chapelle",
 "slug": "chemin-de-la-chapelle",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 50.54646324592227,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 282.0,
   "end_distance_m": 284.0,
   "start_elevation_m": 784.3893555095864,
   "end_elevation_m": 785.4002847745048,
   "min_gradient_pct": -21.273185688534113,
   "suppressed_max_gradient_pct": 61.530407225444606,
   "suppressed_location_m": [
    398.0,
    400.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 45.90959274399135,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 281.0,
   "end_distance_m": 284.0,
   "start_elevation_m": 784.0229969921851,
   "end_elevation_m": 785.4002847745048,
   "min_gradient_pct": -19.06109963158921,
   "suppressed_max_gradient_pct": 54.69572246719281,
   "suppressed_location_m": [
    397.0,
    400.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 36.06196501165641,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 279.0,
   "end_distance_m": 284.0,
   "start_elevation_m": 783.597186523922,
   "end_elevation_m": 785.4002847745048,
   "min_gradient_pct": -18.448917280809383,
   "suppressed_max_gradient_pct": 46.35606856020331,
   "suppressed_location_m": [
    395.0,
    400.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 31.17262202255688,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 275.0,
   "end_distance_m": 285.0,
   "start_elevation_m": 782.5776643029269,
   "end_elevation_m": 785.6949265051826,
   "min_gradient_pct": -17.87693242040973,
   "suppressed_max_gradient_pct": 31.97697346026075,
   "suppressed_location_m": [
    390.0,
    400.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 27.82098981396473,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1442.0,
   "end_distance_m": 1462.0,
   "start_elevation_m": 933.6976512753582,
   "end_elevation_m": 939.2618492381512,
   "min_gradient_pct": -16.828688488544117
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 27.89817436045996,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1437.0,
   "end_distance_m": 1462.0,
   "start_elevation_m": 932.2873056480362,
   "end_elevation_m": 939.2618492381512,
   "min_gradient_pct": -15.962742911881833
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 26.181705136235678,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1418.0,
   "end_distance_m": 1468.0,
   "start_elevation_m": 927.6526702162339,
   "end_elevation_m": 940.7435227843517,
   "min_gradient_pct": -14.28801286893031
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 24.84503109719219,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1380.0,
   "end_distance_m": 1480.0,
   "start_elevation_m": 918.7301602413208,
   "end_elevation_m": 943.575191338513,
   "min_gradient_pct": -9.381904037416689
  }
 ],
 "shape": {
  "ascent_concentration": 0.349,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 514.0,
  "shape_class": "sustained"
 },
 "length_m": 1537.1241466681442,
 "start_elevation_m": 728.6755242265936,
 "end_elevation_m": 953.6573605249018,
 "endpoint_gain_m": 224.98183629830828,
 "overall_gradient_pct": 14.636542974487568,
 "accumulated_ascent_m": 237.55603999109962,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 36.06196501165641,
   "start_distance_m": 279.0,
   "end_distance_m": 284.0,
   "midpoint_distance_m": 281.5,
   "start_elevation_m": 783.597186523922,
   "end_elevation_m": 785.4002847745048,
   "start_xy": [
    2570585.803436181,
    1124076.9910912463
   ],
   "end_xy": [
    2570581.8069886165,
    1124079.9839506133
   ]
  },
  "max_10m": {
   "gradient_pct": 31.17262202255688,
   "start_distance_m": 275.0,
   "end_distance_m": 285.0,
   "midpoint_distance_m": 280.0,
   "start_elevation_m": 782.5776643029269,
   "end_elevation_m": 785.6949265051826,
   "start_xy": [
    2570588.5996096395,
    1124074.1329594362
   ],
   "end_xy": [
    2570581.0006650314,
    1124080.5754252756
   ]
  },
  "max_20m": {
   "gradient_pct": 27.82098981396473,
   "start_distance_m": 1442.0,
   "end_distance_m": 1462.0,
   "midpoint_distance_m": 1452.0,
   "start_elevation_m": 933.6976512753582,
   "end_elevation_m": 939.2618492381512,
   "start_xy": [
    2569889.386429807,
    1124389.8419920087
   ],
   "end_xy": [
    2569884.522637877,
    1124408.3010967688
   ]
  },
  "max_25m": {
   "gradient_pct": 27.89817436045996,
   "start_distance_m": 1437.0,
   "end_distance_m": 1462.0,
   "midpoint_distance_m": 1449.5,
   "start_elevation_m": 932.2873056480362,
   "end_elevation_m": 939.2618492381512,
   "start_xy": [
    2569887.2421077294,
    1124385.3395041057
   ],
   "end_xy": [
    2569884.522637877,
    1124408.3010967688
   ]
  },
  "max_50m": {
   "gradient_pct": 26.181705136235678,
   "start_distance_m": 1418.0,
   "end_distance_m": 1468.0,
   "midpoint_distance_m": 1443.0,
   "start_elevation_m": 927.6526702162339,
   "end_elevation_m": 940.7435227843517,
   "start_xy": [
    2569872.278072041,
    1124374.880953407
   ],
   "end_xy": [
    2569881.157380583,
    1124413.2684948146
   ]
  },
  "max_100m": {
   "gradient_pct": 24.84503109719219,
   "start_distance_m": 1380.0,
   "end_distance_m": 1480.0,
   "midpoint_distance_m": 1430.0,
   "start_elevation_m": 918.7301602413208,
   "end_elevation_m": 943.575191338513,
   "start_xy": [
    2569834.870055072,
    1124371.3517613264
   ],
   "end_xy": [
    2569875.4438505312,
    1124423.8043360475
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -18.448917280809383,
   "start_distance_m": 942.0,
   "end_distance_m": 947.0,
   "midpoint_distance_m": 944.5,
   "start_elevation_m": 858.8463200968719,
   "end_elevation_m": 857.9238742328314,
   "start_xy": [
    2570001.9289501905,
    1124130.2620485073
   ],
   "end_xy": [
    2569998.2605793923,
    1124133.6217727715
   ]
  },
  "min_10m": {
   "gradient_pct": -17.87693242040973,
   "start_distance_m": 940.0,
   "end_distance_m": 950.0,
   "midpoint_distance_m": 945.0,
   "start_elevation_m": 859.1817918027972,
   "end_elevation_m": 857.3940985607562,
   "start_xy": [
    2570003.486435279,
    1124129.007642754
   ],
   "end_xy": [
    2569996.5739947837,
    1124136.0872232642
   ]
  },
  "min_20m": {
   "gradient_pct": -16.828688488544117,
   "start_distance_m": 936.0,
   "end_distance_m": 956.0,
   "midpoint_distance_m": 946.0,
   "start_elevation_m": 859.8433638806027,
   "end_elevation_m": 856.4776261828939,
   "start_xy": [
    2570006.6881237016,
    1124126.6098956354
   ],
   "end_xy": [
    2569994.1558604897,
    1124141.5763411282
   ]
  },
  "min_25m": {
   "gradient_pct": -15.962742911881833,
   "start_distance_m": 935.0,
   "end_distance_m": 960.0,
   "midpoint_distance_m": 947.5,
   "start_elevation_m": 859.9645196589086,
   "end_elevation_m": 855.9738339309381,
   "start_xy": [
    2570007.4943186496,
    1124126.0188067858
   ],
   "end_xy": [
    2569992.950595114,
    1124145.370826575
   ]
  },
  "min_50m": {
   "gradient_pct": -14.28801286893031,
   "start_distance_m": 931.0,
   "end_distance_m": 981.0,
   "midpoint_distance_m": 956.0,
   "start_elevation_m": 860.4619593021737,
   "end_elevation_m": 853.3179528677085,
   "start_xy": [
    2570010.8983204197,
    1124123.927997511
   ],
   "end_xy": [
    2569989.585639211,
    1124166.0473273445
   ]
  },
  "min_100m": {
   "gradient_pct": -9.381904037416689,
   "start_distance_m": 924.0,
   "end_distance_m": 1024.0,
   "midpoint_distance_m": 974.0,
   "start_elevation_m": 860.5929818005458,
   "end_elevation_m": 851.2110777631291,
   "start_xy": [
    2570017.420502479,
    1124121.418538024
   ],
   "end_xy": [
    2569991.680742517,
    1124208.4503325617
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 50.54646324592227,
   "start_distance_m": 282.0,
   "end_distance_m": 284.0,
   "midpoint_distance_m": 283.0,
   "start_elevation_m": 784.3893555095864,
   "end_elevation_m": 785.4002847745048,
   "start_xy": [
    2570583.4300738387,
    1124078.8154613571
   ],
   "end_xy": [
    2570581.8069886165,
    1124079.9839506133
   ]
  },
  "max_3m": {
   "gradient_pct": 45.90959274399135,
   "start_distance_m": 281.0,
   "end_distance_m": 284.0,
   "midpoint_distance_m": 282.5,
   "start_elevation_m": 784.0229969921851,
   "end_elevation_m": 785.4002847745048,
   "start_xy": [
    2570584.2453450398,
    1124078.2363820283
   ],
   "end_xy": [
    2570581.8069886165,
    1124079.9839506133
   ]
  }
 },
 "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,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    396.0,
    401.0
   ]
  ],
  "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_2569-1123_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2021_2569-1124_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2021_2570-1123_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2021_2570-1124_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-10T20:01:22+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/switzerland-2026-09-10-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": [
   "2569-1123",
   "2569-1124",
   "2570-1123",
   "2570-1124"
  ],
  "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": "Gryon",
  "county": "Vaud",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}