{
 "ocl_version": "0.1.0",
 "name": "Chemin Rural",
 "slug": "chemin-rural",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.24562096340037,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 181.0,
   "end_distance_m": 183.0,
   "start_elevation_m": 319.14183431378626,
   "end_elevation_m": 319.58674673305427,
   "min_gradient_pct": -4.023918447023789
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 20.87216085926305,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 179.0,
   "end_distance_m": 182.0,
   "start_elevation_m": 318.745445339153,
   "end_elevation_m": 319.37161016493087,
   "min_gradient_pct": -2.44783891194326
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 20.857372856198708,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 178.0,
   "end_distance_m": 183.0,
   "start_elevation_m": 318.54387809024433,
   "end_elevation_m": 319.58674673305427,
   "min_gradient_pct": -0.7562213404150953
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.348628248411842,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 179.0,
   "end_distance_m": 189.0,
   "start_elevation_m": 318.745445339153,
   "end_elevation_m": 320.78030816399416,
   "min_gradient_pct": 0.24376731015138375
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.14564221930158,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 176.0,
   "end_distance_m": 196.0,
   "start_elevation_m": 318.1593754434218,
   "end_elevation_m": 322.18850388728214,
   "min_gradient_pct": 0.4022413478770659
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.02601090380972,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 178.0,
   "end_distance_m": 203.0,
   "start_elevation_m": 318.54387809024433,
   "end_elevation_m": 323.55038081619676,
   "min_gradient_pct": 0.584371143610042
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.14125067790951,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 166.0,
   "end_distance_m": 216.0,
   "start_elevation_m": 316.3458672739109,
   "end_elevation_m": 325.9164926128657,
   "min_gradient_pct": 1.50895567356838
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.052339066676893,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 158.0,
   "end_distance_m": 258.0,
   "start_elevation_m": 315.08990917906004,
   "end_elevation_m": 332.14224824573694,
   "min_gradient_pct": 2.66251656409122
  }
 ],
 "shape": {
  "ascent_concentration": 0.477,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 151.0,
  "shape_class": "stepped"
 },
 "length_m": 662.8669691403985,
 "start_elevation_m": 307.39398659670024,
 "end_elevation_m": 358.55023667430146,
 "endpoint_gain_m": 51.156250077601214,
 "overall_gradient_pct": 7.717423323105133,
 "accumulated_ascent_m": 51.607633005969035,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 20.857372856198708,
   "start_distance_m": 178.0,
   "end_distance_m": 183.0,
   "midpoint_distance_m": 180.5,
   "start_elevation_m": 318.54387809024433,
   "end_elevation_m": 319.58674673305427,
   "start_xy": [
    1023972.4046848427,
    6831083.8326103045
   ],
   "end_xy": [
    1023967.404747045,
    6831083.807669997
   ]
  },
  "max_10m": {
   "gradient_pct": 20.348628248411842,
   "start_distance_m": 179.0,
   "end_distance_m": 189.0,
   "midpoint_distance_m": 184.0,
   "start_elevation_m": 318.745445339153,
   "end_elevation_m": 320.78030816399416,
   "start_xy": [
    1023971.4046972832,
    6831083.827622243
   ],
   "end_xy": [
    1023961.4048216877,
    6831083.777741629
   ]
  },
  "max_20m": {
   "gradient_pct": 20.14564221930158,
   "start_distance_m": 176.0,
   "end_distance_m": 196.0,
   "midpoint_distance_m": 186.0,
   "start_elevation_m": 318.1593754434218,
   "end_elevation_m": 322.18850388728214,
   "start_xy": [
    1023974.4046599618,
    6831083.842586427
   ],
   "end_xy": [
    1023954.445457152,
    6831083.2048044745
   ]
  },
  "max_25m": {
   "gradient_pct": 20.02601090380972,
   "start_distance_m": 178.0,
   "end_distance_m": 203.0,
   "midpoint_distance_m": 190.5,
   "start_elevation_m": 318.54387809024433,
   "end_elevation_m": 323.55038081619676,
   "start_xy": [
    1023972.4046848427,
    6831083.8326103045
   ],
   "end_xy": [
    1023947.5193809678,
    6831082.190177109
   ]
  },
  "max_50m": {
   "gradient_pct": 19.14125067790951,
   "start_distance_m": 166.0,
   "end_distance_m": 216.0,
   "midpoint_distance_m": 191.0,
   "start_elevation_m": 316.3458672739109,
   "end_elevation_m": 325.9164926128657,
   "start_xy": [
    1023984.4045355573,
    6831083.892467042
   ],
   "end_xy": [
    1023934.6566680544,
    6831080.305869143
   ]
  },
  "max_100m": {
   "gradient_pct": 17.052339066676893,
   "start_distance_m": 158.0,
   "end_distance_m": 258.0,
   "midpoint_distance_m": 208.0,
   "start_elevation_m": 315.08990917906004,
   "end_elevation_m": 332.14224824573694,
   "start_xy": [
    1023992.3788878839,
    6831084.398184999
   ],
   "end_xy": [
    1023893.1002109494,
    6831074.21810495
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.7562213404150953,
   "start_distance_m": 407.0,
   "end_distance_m": 412.0,
   "midpoint_distance_m": 409.5,
   "start_elevation_m": 344.3385251828103,
   "end_elevation_m": 344.30071411578956,
   "start_xy": [
    1023764.151362371,
    6831115.651827637
   ],
   "end_xy": [
    1023765.5926729166,
    6831111.071377794
   ]
  },
  "min_10m": {
   "gradient_pct": 0.24376731015138375,
   "start_distance_m": 646.0,
   "end_distance_m": 656.0,
   "midpoint_distance_m": 651.0,
   "start_elevation_m": 358.4590775536781,
   "end_elevation_m": 358.48345428469327,
   "start_xy": [
    1023677.9833857805,
    6830906.604879228
   ],
   "end_xy": [
    1023675.999161454,
    6830896.803713286
   ]
  },
  "min_20m": {
   "gradient_pct": 0.4022413478770659,
   "start_distance_m": 641.0,
   "end_distance_m": 661.0,
   "midpoint_distance_m": 651.0,
   "start_elevation_m": 358.44261194884484,
   "end_elevation_m": 358.52306021842026,
   "start_xy": [
    1023678.9754979437,
    6830911.505462199
   ],
   "end_xy": [
    1023675.007446708,
    6830891.903049972
   ]
  },
  "min_25m": {
   "gradient_pct": 0.584371143610042,
   "start_distance_m": 635.0,
   "end_distance_m": 660.0,
   "midpoint_distance_m": 647.5,
   "start_elevation_m": 358.37791866432394,
   "end_elevation_m": 358.52401145022645,
   "start_xy": [
    1023680.1660325396,
    6830917.386161764
   ],
   "end_xy": [
    1023675.2054717235,
    6830892.88324691
   ]
  },
  "min_50m": {
   "gradient_pct": 1.50895567356838,
   "start_distance_m": 609.0,
   "end_distance_m": 659.0,
   "midpoint_distance_m": 634.0,
   "start_elevation_m": 357.7513004872585,
   "end_elevation_m": 358.5057783240427,
   "start_xy": [
    1023686.7096405347,
    6830942.533784276
   ],
   "end_xy": [
    1023675.4038941561,
    6830893.8633635035
   ]
  },
  "min_100m": {
   "gradient_pct": 2.66251656409122,
   "start_distance_m": 562.0,
   "end_distance_m": 662.0,
   "midpoint_distance_m": 612.0,
   "start_elevation_m": 355.9104831461897,
   "end_elevation_m": 358.5729997102809,
   "start_xy": [
    1023696.8544136687,
    6830986.699975887
   ],
   "end_xy": [
    1023674.809560894,
    6830890.922824893
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.24562096340037,
   "start_distance_m": 181.0,
   "end_distance_m": 183.0,
   "midpoint_distance_m": 182.0,
   "start_elevation_m": 319.14183431378626,
   "end_elevation_m": 319.58674673305427,
   "start_xy": [
    1023969.404722164,
    6831083.81764612
   ],
   "end_xy": [
    1023967.404747045,
    6831083.807669997
   ]
  },
  "max_3m": {
   "gradient_pct": 20.87216085926305,
   "start_distance_m": 179.0,
   "end_distance_m": 182.0,
   "midpoint_distance_m": 180.5,
   "start_elevation_m": 318.745445339153,
   "end_elevation_m": 319.37161016493087,
   "start_xy": [
    1023971.4046972832,
    6831083.827622243
   ],
   "end_xy": [
    1023968.4047346045,
    6831083.8126580585
   ]
  }
 },
 "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": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.006,
   "obstruction_max_height_m": 8.19,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": []
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "686aca469eafb5c6deda431acc2396d659a613ab",
   "code_git_dirty": "false",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:0048c2bbb24ab95e",
   "python": "3.14.4",
   "numpy": "2.5.3",
   "rasterio": "1.5.1",
   "pyproj": "3.8.0",
   "laspy": "2.7.0",
   "shapely": "2.1.2",
   "pyosmium": "4.3.1",
   "libosmium": "2.23.1",
   "gdal": "3.12.4",
   "proj": "9.8.1",
   "run_id": "fr-vosges",
   "road_pbf": "block-batch-fr-vosges.osm.pbf",
   "region_key": "france",
   "crs": "EPSG:2154",
   "elevation_provider_key": "ign-lidarhd",
   "tile_index": "wms-grid",
   "authority": "bdtopo",
   "registry_pbf": "france-vosges-2026-09-16.osm.pbf",
   "tile_index_snapshot": "sha256:3827be8f439ab5f4"
  },
  "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:2154",
  "elevation_resolution_m": 0.5,
  "elevation_tiles": [
   "data/cache/fr/ign-lidarhd_dtm_E1023-N6830_0m5@22LHDVosgesRF-2024-12-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1023-N6831_0m5@22LHDVosgesRF-2024-12-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1024-N6830_0m5@22LHDVosgesRF-2024-12-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1024-N6831_0m5@22LHDVosgesRF-2024-12-20.tif"
  ],
  "calculated_at": "2026-09-19T23:33:46+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-vosges.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-vosges",
  "elevation_provider": "IGN LiDAR HD MNT 0.5 m",
  "elevation_licence": "Licence Ouverte / Open Licence 2.0 (Etalab) \u2014 \u00a9 IGN, LiDAR HD (MNT/MNS), data.geopf.fr; reproduction autoris\u00e9e avec mention de la source et de la date",
  "elevation_dataset": "LiDAR HD \u2014 MNT (sol) et MNS (surface), 0,50 m (Institut national de l'information g\u00e9ographique et foresti\u00e8re), RGF93 / Lambert-93 EPSG:2154, altitudes IGN69",
  "elevation_vertical_datum": "IGN69",
  "elevation_tile_ids": [
   "E1023-N6830",
   "E1023-N6831",
   "E1024-N6830",
   "E1024-N6831"
  ],
  "elevation_blocks": [
   "22LHDVosgesRF@2024-12-20"
  ],
  "ign_dalles": [
   "LHD_FXX_1023_6831_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_1023_6832_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_1024_6831_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_1024_6832_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHDVosgesRF"
  ],
  "ign_editions": [
   "2024-12-20"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1023_6831_MNT_O_0M50_LAMB93_IGN69": "2024-12-20",
   "LHD_FXX_1023_6832_MNT_O_0M50_LAMB93_IGN69": "2024-12-20",
   "LHD_FXX_1024_6831_MNT_O_0M50_LAMB93_IGN69": "2024-12-20",
   "LHD_FXX_1024_6832_MNT_O_0M50_LAMB93_IGN69": "2024-12-20"
  },
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 33,
   "stations_resolved": 33,
   "width_median_m": 6.25,
   "width_p10_m": 3.85,
   "width_min_m": 3.0,
   "width_max_m": 11.25,
   "bounded_share": 0.152,
   "unbounded_share": 0.848,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.25,
   "window_m": [
    178.0,
    203.0
   ],
   "width_at_max25_m": 4.25,
   "window_stations": 7,
   "single_track": false,
   "single_track_rule": "PROVISIONAL (2026-09-15): width_p10_m <= 3.0 m with bounded_share >= 0.6; recorded, not a rule",
   "status": "ok",
   "source": "dtm",
   "station_m": 25.0,
   "window_station_m": 5.0,
   "halfwidth_m": 6.0,
   "step_m": 0.25,
   "level_tol_m": 0.12,
   "break_min_m": 0.3,
   "stations_failed": 0,
   "hedge_to_hedge": {
    "stations": 33,
    "stations_resolved": 33,
    "width_median_m": 9.75,
    "width_p10_m": 7.25,
    "width_min_m": 4.5,
    "width_max_m": 12.0,
    "bounded_share": 0.212,
    "unbounded_share": 0.788,
    "confidence_median": 0.0,
    "width_median_bounded_m": 8.0,
    "window_m": [
     178.0,
     203.0
    ],
    "width_at_max25_m": 12.0,
    "window_stations": 7,
    "status": "ok",
    "source": "dsm",
    "station_m": 25.0,
    "window_station_m": 5.0,
    "halfwidth_m": 6.0,
    "step_m": 0.25,
    "level_tol_m": 0.5,
    "break_min_m": 0.3,
    "stations_failed": 0
   }
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Mollkirch",
  "county": "Bas-Rhin",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}