{
 "ocl_version": "0.1.0",
 "name": "Route de Chemin",
 "slug": "route-de-chemin",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 18.846929792420042,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 303.0,
   "end_distance_m": 305.0,
   "start_elevation_m": 532.9169674701103,
   "end_elevation_m": 533.2939060659587,
   "min_gradient_pct": -2.929435395523683
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 18.50735604897409,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 302.0,
   "end_distance_m": 305.0,
   "start_elevation_m": 532.7386853844895,
   "end_elevation_m": 533.2939060659587,
   "min_gradient_pct": -2.2117955664972064
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 17.915358520326663,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 310.0,
   "end_distance_m": 315.0,
   "start_elevation_m": 534.0206816145281,
   "end_elevation_m": 534.9164495405445,
   "min_gradient_pct": -1.7242676188482164
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 17.385728835120062,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 244.0,
   "end_distance_m": 254.0,
   "start_elevation_m": 523.5450402246079,
   "end_elevation_m": 525.2836131081199,
   "min_gradient_pct": -0.05172399739763023
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 17.145135291694373,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 240.0,
   "end_distance_m": 260.0,
   "start_elevation_m": 522.8752852298835,
   "end_elevation_m": 526.3043122882224,
   "min_gradient_pct": 0.7705149951607382
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 16.975009246678837,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 235.0,
   "end_distance_m": 260.0,
   "start_elevation_m": 522.0605599765527,
   "end_elevation_m": 526.3043122882224,
   "min_gradient_pct": 1.51445028559624
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.49220585947046,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 225.0,
   "end_distance_m": 275.0,
   "start_elevation_m": 520.4553919327176,
   "end_elevation_m": 528.7014948624528,
   "min_gradient_pct": 5.111719746962763
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.059164308423988,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 226.0,
   "end_distance_m": 326.0,
   "start_elevation_m": 520.6135030776428,
   "end_elevation_m": 536.6726673860668,
   "min_gradient_pct": 6.161940430073287
  }
 ],
 "shape": {
  "ascent_concentration": 0.283,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 351.0,
  "shape_class": "sustained"
 },
 "length_m": 2597.8892859972643,
 "start_elevation_m": 494.4324370976538,
 "end_elevation_m": 767.0753153984507,
 "endpoint_gain_m": 272.6428783007969,
 "overall_gradient_pct": 10.494784353219124,
 "accumulated_ascent_m": 272.83322709897334,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 17.915358520326663,
   "start_distance_m": 310.0,
   "end_distance_m": 315.0,
   "midpoint_distance_m": 312.5,
   "start_elevation_m": 534.0206816145281,
   "end_elevation_m": 534.9164495405445,
   "start_xy": [
    2570651.6783143636,
    1103962.658374414
   ],
   "end_xy": [
    2570648.3286247323,
    1103958.946288831
   ]
  },
  "max_10m": {
   "gradient_pct": 17.385728835120062,
   "start_distance_m": 244.0,
   "end_distance_m": 254.0,
   "midpoint_distance_m": 249.0,
   "start_elevation_m": 523.5450402246079,
   "end_elevation_m": 525.2836131081199,
   "start_xy": [
    2570689.2639518003,
    1104016.4871005393
   ],
   "end_xy": [
    2570682.9466683785,
    1104008.751852706
   ]
  },
  "max_20m": {
   "gradient_pct": 17.145135291694373,
   "start_distance_m": 240.0,
   "end_distance_m": 260.0,
   "midpoint_distance_m": 250.0,
   "start_elevation_m": 522.8752852298835,
   "end_elevation_m": 526.3043122882224,
   "start_xy": [
    2570691.9692368763,
    1104019.4335276396
   ],
   "end_xy": [
    2570679.5791225936,
    1104003.787505105
   ]
  },
  "max_25m": {
   "gradient_pct": 16.975009246678837,
   "start_distance_m": 235.0,
   "end_distance_m": 260.0,
   "midpoint_distance_m": 247.5,
   "start_elevation_m": 522.0605599765527,
   "end_elevation_m": 526.3043122882224,
   "start_xy": [
    2570695.1287840395,
    1104023.3062972473
   ],
   "end_xy": [
    2570679.5791225936,
    1104003.787505105
   ]
  },
  "max_50m": {
   "gradient_pct": 16.49220585947046,
   "start_distance_m": 225.0,
   "end_distance_m": 275.0,
   "midpoint_distance_m": 250.0,
   "start_elevation_m": 520.4553919327176,
   "end_elevation_m": 528.7014948624528,
   "start_xy": [
    2570700.6321574072,
    1104031.6315085765
   ],
   "end_xy": [
    2570671.833344015,
    1103990.9445583273
   ]
  },
  "max_100m": {
   "gradient_pct": 16.059164308423988,
   "start_distance_m": 226.0,
   "end_distance_m": 326.0,
   "midpoint_distance_m": 276.0,
   "start_elevation_m": 520.6135030776428,
   "end_elevation_m": 536.6726673860668,
   "start_xy": [
    2570700.153059509,
    1104030.7537471033
   ],
   "end_xy": [
    2570642.3278503623,
    1103949.752336699
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.7242676188482164,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 494.4324370976538,
   "end_elevation_m": 494.3462237167114,
   "start_xy": [
    2570780.232,
    1104193.422
   ],
   "end_xy": [
    2570785.229020435,
    1104193.5945866439
   ]
  },
  "min_10m": {
   "gradient_pct": -0.05172399739763023,
   "start_distance_m": 87.0,
   "end_distance_m": 97.0,
   "midpoint_distance_m": 92.0,
   "start_elevation_m": 503.2051396260101,
   "end_elevation_m": 503.19996722627036,
   "start_xy": [
    2570781.40317652,
    1104142.1316257908
   ],
   "end_xy": [
    2570777.136408007,
    1104133.0993182515
   ]
  },
  "min_20m": {
   "gradient_pct": 0.7705149951607382,
   "start_distance_m": 86.0,
   "end_distance_m": 106.0,
   "midpoint_distance_m": 96.0,
   "start_elevation_m": 503.2011612503167,
   "end_elevation_m": 503.35526424934886,
   "start_xy": [
    2570781.913514066,
    1104142.99159997
   ],
   "end_xy": [
    2570772.8447515983,
    1104125.2032191174
   ]
  },
  "min_25m": {
   "gradient_pct": 1.51445028559624,
   "start_distance_m": 81.0,
   "end_distance_m": 106.0,
   "midpoint_distance_m": 93.5,
   "start_elevation_m": 502.9766516779498,
   "end_elevation_m": 503.35526424934886,
   "start_xy": [
    2570784.764232666,
    1104147.0868750166
   ],
   "end_xy": [
    2570772.8447515983,
    1104125.2032191174
   ]
  },
  "min_50m": {
   "gradient_pct": 5.111719746962763,
   "start_distance_m": 2261.0,
   "end_distance_m": 2311.0,
   "midpoint_distance_m": 2286.0,
   "start_elevation_m": 724.8526786722318,
   "end_elevation_m": 727.4085385457132,
   "start_xy": [
    2571914.2608048185,
    1104516.3368507156
   ],
   "end_xy": [
    2571960.2599435435,
    1104523.7532373755
   ]
  },
  "min_100m": {
   "gradient_pct": 6.161940430073287,
   "start_distance_m": 2235.0,
   "end_distance_m": 2335.0,
   "midpoint_distance_m": 2285.0,
   "start_elevation_m": 723.0394972216185,
   "end_elevation_m": 729.2014376516918,
   "start_xy": [
    2571888.3600832,
    1104517.3989998952
   ],
   "end_xy": [
    2571982.2378933416,
    1104533.0952818077
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 18.846929792420042,
   "start_distance_m": 303.0,
   "end_distance_m": 305.0,
   "midpoint_distance_m": 304.0,
   "start_elevation_m": 532.9169674701103,
   "end_elevation_m": 533.2939060659587,
   "start_xy": [
    2570656.726323643,
    1103967.5056886275
   ],
   "end_xy": [
    2570655.2774473066,
    1103966.1270976297
   ]
  },
  "max_3m": {
   "gradient_pct": 18.50735604897409,
   "start_distance_m": 302.0,
   "end_distance_m": 305.0,
   "midpoint_distance_m": 303.5,
   "start_elevation_m": 532.7386853844895,
   "end_elevation_m": 533.2939060659587,
   "start_xy": [
    2570657.426191869,
    1103968.2199606101
   ],
   "end_xy": [
    2570655.2774473066,
    1103966.1270976297
   ]
  }
 },
 "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": 0.016,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    13.0,
    53.0
   ]
  ],
  "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_2024_2570-1103_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2024_2570-1104_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2024_2571-1103_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2024_2571-1104_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2024_2572-1104_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-10T20:04:55+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": [
   "2570-1103",
   "2570-1104",
   "2571-1103",
   "2571-1104",
   "2572-1104"
  ],
  "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": "Martigny",
  "county": "Valais/Wallis",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}