{
 "ocl_version": "0.1.0",
 "name": "Chemin du Petit-Cat\u00e9chisme",
 "slug": "chemin-du-petit-catechisme",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.10778994081204,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 32.0,
   "end_distance_m": 34.0,
   "start_elevation_m": 506.823522864425,
   "end_elevation_m": 507.28567866324124,
   "min_gradient_pct": 0.5508584629808411
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.636383827805655,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 30.0,
   "end_distance_m": 33.0,
   "start_elevation_m": 506.36871298732063,
   "end_elevation_m": 507.0478045021548,
   "min_gradient_pct": 1.2147901010242397
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.617404849462446,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 30.0,
   "end_distance_m": 35.0,
   "start_elevation_m": 506.36871298732063,
   "end_elevation_m": 507.49958322979376,
   "min_gradient_pct": 1.573944745590552
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.230382816787255,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 30.0,
   "end_distance_m": 40.0,
   "start_elevation_m": 506.36871298732063,
   "end_elevation_m": 508.59175126899936,
   "min_gradient_pct": 2.0147944490634018
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.65210339071791,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 28.0,
   "end_distance_m": 48.0,
   "start_elevation_m": 505.93922559463954,
   "end_elevation_m": 510.2696462727831,
   "min_gradient_pct": 2.2577862867353815
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.459547639798075,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 26.0,
   "end_distance_m": 51.0,
   "start_elevation_m": 505.5118673652656,
   "end_elevation_m": 510.8767542752151,
   "min_gradient_pct": 4.271499220779788
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.320032139039654,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 26.0,
   "end_distance_m": 76.0,
   "start_elevation_m": 505.5118673652656,
   "end_elevation_m": 515.6718834347854,
   "min_gradient_pct": 12.823406324332723
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.73571282099641,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 24.0,
   "end_distance_m": 124.0,
   "start_elevation_m": 505.12053348808314,
   "end_elevation_m": 523.8562463090796,
   "min_gradient_pct": 14.086828297952138
  }
 ],
 "shape": {
  "ascent_concentration": 0.34,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 205.0,
  "shape_class": "sustained"
 },
 "length_m": 222.15892597029872,
 "start_elevation_m": 504.24433827556663,
 "end_elevation_m": 537.6478742597769,
 "endpoint_gain_m": 33.40353598421029,
 "overall_gradient_pct": 15.035873907977093,
 "accumulated_ascent_m": 33.41596440007896,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.617404849462446,
   "start_distance_m": 30.0,
   "end_distance_m": 35.0,
   "midpoint_distance_m": 32.5,
   "start_elevation_m": 506.36871298732063,
   "end_elevation_m": 507.49958322979376,
   "start_xy": [
    2561291.51790618,
    1205150.5983886262
   ],
   "end_xy": [
    2561286.5867508263,
    1205151.4252508753
   ]
  },
  "max_10m": {
   "gradient_pct": 22.230382816787255,
   "start_distance_m": 30.0,
   "end_distance_m": 40.0,
   "midpoint_distance_m": 35.0,
   "start_elevation_m": 506.36871298732063,
   "end_elevation_m": 508.59175126899936,
   "start_xy": [
    2561291.51790618,
    1205150.5983886262
   ],
   "end_xy": [
    2561281.655618091,
    1205152.2522474795
   ]
  },
  "max_20m": {
   "gradient_pct": 21.65210339071791,
   "start_distance_m": 28.0,
   "end_distance_m": 48.0,
   "midpoint_distance_m": 38.0,
   "start_elevation_m": 505.93922559463954,
   "end_elevation_m": 510.2696462727831,
   "start_xy": [
    2561293.4903147193,
    1205150.2673242968
   ],
   "end_xy": [
    2561273.765772877,
    1205153.5752471627
   ]
  },
  "max_25m": {
   "gradient_pct": 21.459547639798075,
   "start_distance_m": 26.0,
   "end_distance_m": 51.0,
   "midpoint_distance_m": 38.5,
   "start_elevation_m": 505.5118673652656,
   "end_elevation_m": 510.8767542752151,
   "start_xy": [
    2561295.4629081157,
    1205149.937361865
   ],
   "end_xy": [
    2561270.8070795424,
    1205154.0713638905
   ]
  },
  "max_50m": {
   "gradient_pct": 20.320032139039654,
   "start_distance_m": 26.0,
   "end_distance_m": 76.0,
   "midpoint_distance_m": 51.0,
   "start_elevation_m": 505.5118673652656,
   "end_elevation_m": 515.6718834347854,
   "start_xy": [
    2561295.4629081157,
    1205149.937361865
   ],
   "end_xy": [
    2561246.3569528013,
    1205159.195223067
   ]
  },
  "max_100m": {
   "gradient_pct": 18.73571282099641,
   "start_distance_m": 24.0,
   "end_distance_m": 124.0,
   "midpoint_distance_m": 74.0,
   "start_elevation_m": 505.12053348808314,
   "end_elevation_m": 523.8562463090796,
   "start_xy": [
    2561297.4353167135,
    1205149.606297913
   ],
   "end_xy": [
    2561199.910220379,
    1205165.8455137308
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 1.573944745590552,
   "start_distance_m": 15.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 17.5,
   "start_elevation_m": 504.6171982956342,
   "end_elevation_m": 504.6958955329137,
   "start_xy": [
    2561305.793700339,
    1205147.6750570156
   ],
   "end_xy": [
    2561301.3470296618,
    1205148.8082388667
   ]
  },
  "min_10m": {
   "gradient_pct": 2.0147944490634018,
   "start_distance_m": 10.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 15.0,
   "start_elevation_m": 504.49441608800737,
   "end_elevation_m": 504.6958955329137,
   "start_xy": [
    2561310.4011963154,
    1205149.612622529
   ],
   "end_xy": [
    2561301.3470296618,
    1205148.8082388667
   ]
  },
  "min_20m": {
   "gradient_pct": 2.2577862867353815,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 504.24433827556663,
   "end_elevation_m": 504.6958955329137,
   "start_xy": [
    2561319.4827932394,
    1205153.79885849
   ],
   "end_xy": [
    2561301.3470296618,
    1205148.8082388667
   ]
  },
  "min_25m": {
   "gradient_pct": 4.271499220779788,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 504.24433827556663,
   "end_elevation_m": 505.3122130807616,
   "start_xy": [
    2561319.4827932394,
    1205153.79885849
   ],
   "end_xy": [
    2561296.449035442,
    1205149.771371315
   ]
  },
  "min_50m": {
   "gradient_pct": 12.823406324332723,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 504.24433827556663,
   "end_elevation_m": 510.656041437733,
   "start_xy": [
    2561319.4827932394,
    1205153.79885849
   ],
   "end_xy": [
    2561271.7933608214,
    1205153.9062905319
   ]
  },
  "min_100m": {
   "gradient_pct": 14.086828297952138,
   "start_distance_m": 122.0,
   "end_distance_m": 222.0,
   "midpoint_distance_m": 172.0,
   "start_elevation_m": 523.527436212391,
   "end_elevation_m": 537.6142645103431,
   "start_xy": [
    2561201.9042797326,
    1205165.99955019
   ],
   "end_xy": [
    2561105.667432832,
    1205169.6020398473
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.10778994081204,
   "start_distance_m": 32.0,
   "end_distance_m": 34.0,
   "midpoint_distance_m": 33.0,
   "start_elevation_m": 506.823522864425,
   "end_elevation_m": 507.28567866324124,
   "start_xy": [
    2561289.5454673218,
    1205150.9292727099
   ],
   "end_xy": [
    2561287.573058728,
    1205151.2603366869
   ]
  },
  "max_3m": {
   "gradient_pct": 22.636383827805655,
   "start_distance_m": 30.0,
   "end_distance_m": 33.0,
   "midpoint_distance_m": 31.5,
   "start_elevation_m": 506.36871298732063,
   "end_elevation_m": 507.0478045021548,
   "start_xy": [
    2561291.51790618,
    1205150.5983886262
   ],
   "end_xy": [
    2561288.559186025,
    1205151.0943459633
   ]
  }
 },
 "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_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_2561-1205_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-11T00:41:54+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": [
   "2561-1205"
  ],
  "route_base_cut_m": 222.2,
  "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": "Neuch\u00e2tel",
  "county": "Neuch\u00e2tel",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}