{
 "ocl_version": "0.1.0",
 "name": "Via della Valeggia",
 "slug": "via-della-valeggia-2",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.299560419857016,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 2808.0,
   "end_distance_m": 2810.0,
   "start_elevation_m": 714.7592354696125,
   "end_elevation_m": 715.3052266780096,
   "min_gradient_pct": -17.596614181695713
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.581395401619073,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 2808.0,
   "end_distance_m": 2811.0,
   "start_elevation_m": 714.7592354696125,
   "end_elevation_m": 715.556677331661,
   "min_gradient_pct": -15.521925811659306
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.693468641466097,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2806.0,
   "end_distance_m": 2811.0,
   "start_elevation_m": 714.2720038995877,
   "end_elevation_m": 715.556677331661,
   "min_gradient_pct": -14.343909659605742
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.073485165548846,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2800.0,
   "end_distance_m": 2810.0,
   "start_elevation_m": 712.7978781614547,
   "end_elevation_m": 715.3052266780096,
   "min_gradient_pct": -13.35330142842622
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.51248165427728,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2799.0,
   "end_distance_m": 2819.0,
   "start_elevation_m": 712.5711550687037,
   "end_elevation_m": 717.4736513995591,
   "min_gradient_pct": -11.838188934633536
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.197555252959773,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2800.0,
   "end_distance_m": 2825.0,
   "start_elevation_m": 712.7978781614547,
   "end_elevation_m": 718.8472669746947,
   "min_gradient_pct": -11.147145729056774
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.575256643013972,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2800.0,
   "end_distance_m": 2850.0,
   "start_elevation_m": 712.7978781614547,
   "end_elevation_m": 724.5855064829617,
   "min_gradient_pct": -9.451170688838374
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 21.047220705203927,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2791.0,
   "end_distance_m": 2891.0,
   "start_elevation_m": 711.0014700787309,
   "end_elevation_m": 732.0486907839348,
   "min_gradient_pct": -7.989783799933548
  }
 ],
 "shape": {
  "ascent_concentration": 0.344,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 377.0,
  "shape_class": "sustained"
 },
 "length_m": 4179.458139392288,
 "start_elevation_m": 483.8736676910447,
 "end_elevation_m": 883.7438934863284,
 "endpoint_gain_m": 399.87022579528366,
 "overall_gradient_pct": 9.56751359767002,
 "accumulated_ascent_m": 422.3111087133169,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.693468641466097,
   "start_distance_m": 2806.0,
   "end_distance_m": 2811.0,
   "midpoint_distance_m": 2808.5,
   "start_elevation_m": 714.2720038995877,
   "end_elevation_m": 715.556677331661,
   "start_xy": [
    2713586.6035864633,
    1109912.168988834
   ],
   "end_xy": [
    2713584.389914917,
    1109907.6857245895
   ]
  },
  "max_10m": {
   "gradient_pct": 25.073485165548846,
   "start_distance_m": 2800.0,
   "end_distance_m": 2810.0,
   "midpoint_distance_m": 2805.0,
   "start_elevation_m": 712.7978781614547,
   "end_elevation_m": 715.3052266780096,
   "start_xy": [
    2713588.813469634,
    1109917.738743897
   ],
   "end_xy": [
    2713584.8326492263,
    1109908.5823774384
   ]
  },
  "max_20m": {
   "gradient_pct": 24.51248165427728,
   "start_distance_m": 2799.0,
   "end_distance_m": 2819.0,
   "midpoint_distance_m": 2809.0,
   "start_elevation_m": 712.5711550687037,
   "end_elevation_m": 717.4736513995591,
   "start_xy": [
    2713589.144442826,
    1109918.6820767554
   ],
   "end_xy": [
    2713580.702030067,
    1109900.5877367896
   ]
  },
  "max_25m": {
   "gradient_pct": 24.197555252959773,
   "start_distance_m": 2800.0,
   "end_distance_m": 2825.0,
   "midpoint_distance_m": 2812.5,
   "start_elevation_m": 712.7978781614547,
   "end_elevation_m": 718.8472669746947,
   "start_xy": [
    2713588.813469634,
    1109917.738743897
   ],
   "end_xy": [
    2713577.8627528236,
    1109895.3020481176
   ]
  },
  "max_50m": {
   "gradient_pct": 23.575256643013972,
   "start_distance_m": 2800.0,
   "end_distance_m": 2850.0,
   "midpoint_distance_m": 2825.0,
   "start_elevation_m": 712.7978781614547,
   "end_elevation_m": 724.5855064829617,
   "start_xy": [
    2713588.813469634,
    1109917.738743897
   ],
   "end_xy": [
    2713570.260662401,
    1109871.9201107498
   ]
  },
  "max_100m": {
   "gradient_pct": 21.047220705203927,
   "start_distance_m": 2791.0,
   "end_distance_m": 2891.0,
   "midpoint_distance_m": 2841.0,
   "start_elevation_m": 711.0014700787309,
   "end_elevation_m": 732.0486907839348,
   "start_xy": [
    2713589.627698634,
    1109926.5587020197
   ],
   "end_xy": [
    2713569.4291176577,
    1109830.979277662
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -14.343909659605742,
   "start_distance_m": 1012.0,
   "end_distance_m": 1017.0,
   "midpoint_distance_m": 1014.5,
   "start_elevation_m": 575.5340865266098,
   "end_elevation_m": 574.8168910436295,
   "start_xy": [
    2713618.438157838,
    1110350.8652451367
   ],
   "end_xy": [
    2713617.272046836,
    1110355.7239823425
   ]
  },
  "min_10m": {
   "gradient_pct": -13.35330142842622,
   "start_distance_m": 1007.0,
   "end_distance_m": 1017.0,
   "midpoint_distance_m": 1012.0,
   "start_elevation_m": 576.1522211864722,
   "end_elevation_m": 574.8168910436295,
   "start_xy": [
    2713620.686340559,
    1110346.43889105
   ],
   "end_xy": [
    2713617.272046836,
    1110355.7239823425
   ]
  },
  "min_20m": {
   "gradient_pct": -11.838188934633536,
   "start_distance_m": 1005.0,
   "end_distance_m": 1025.0,
   "midpoint_distance_m": 1015.0,
   "start_elevation_m": 576.3640754998016,
   "end_elevation_m": 573.9964377128749,
   "start_xy": [
    2713622.114271892,
    1110345.0385296294
   ],
   "end_xy": [
    2713614.886005673,
    1110363.3592172738
   ]
  },
  "min_25m": {
   "gradient_pct": -11.147145729056774,
   "start_distance_m": 1005.0,
   "end_distance_m": 1030.0,
   "midpoint_distance_m": 1017.5,
   "start_elevation_m": 576.3640754998016,
   "end_elevation_m": 573.5772890675374,
   "start_xy": [
    2713622.114271892,
    1110345.0385296294
   ],
   "end_xy": [
    2713613.351389334,
    1110368.1165259734
   ]
  },
  "min_50m": {
   "gradient_pct": -9.451170688838374,
   "start_distance_m": 1003.0,
   "end_distance_m": 1053.0,
   "midpoint_distance_m": 1028.0,
   "start_elevation_m": 576.4398984870552,
   "end_elevation_m": 571.714313142636,
   "start_xy": [
    2713623.5422032247,
    1110343.638168209
   ],
   "end_xy": [
    2713602.582303497,
    1110388.2866017441
   ]
  },
  "min_100m": {
   "gradient_pct": -7.989783799933548,
   "start_distance_m": 1005.0,
   "end_distance_m": 1105.0,
   "midpoint_distance_m": 1055.0,
   "start_elevation_m": 576.3640754998016,
   "end_elevation_m": 568.3742916998681,
   "start_xy": [
    2713622.114271892,
    1110345.0385296294
   ],
   "end_xy": [
    2713564.7949434137,
    1110422.3177325355
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.299560419857016,
   "start_distance_m": 2808.0,
   "end_distance_m": 2810.0,
   "midpoint_distance_m": 2809.0,
   "start_elevation_m": 714.7592354696125,
   "end_elevation_m": 715.3052266780096,
   "start_xy": [
    2713585.718117845,
    1109910.375683136
   ],
   "end_xy": [
    2713584.8326492263,
    1109908.5823774384
   ]
  },
  "max_3m": {
   "gradient_pct": 26.581395401619073,
   "start_distance_m": 2808.0,
   "end_distance_m": 2811.0,
   "midpoint_distance_m": 2809.5,
   "start_elevation_m": 714.7592354696125,
   "end_elevation_m": 715.556677331661,
   "start_xy": [
    2713585.718117845,
    1109910.375683136
   ],
   "end_xy": [
    2713584.389914917,
    1109907.6857245895
   ]
  }
 },
 "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": []
 },
 "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_2022_2713-1109_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2022_2713-1110_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2022_2714-1109_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2022_2714-1110_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-11T04:58:28+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-run7-260911",
  "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": [
   "2713-1109",
   "2713-1110",
   "2714-1109",
   "2714-1110"
  ],
  "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": "Monteceneri",
  "county": "Ticino",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}