{
 "ocl_version": "0.1.0",
 "name": "Chemin du Pav\u00e9",
 "slug": "chemin-du-pave",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 31.217806111573054,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 267.0,
   "end_distance_m": 269.0,
   "start_elevation_m": 480.58705059861484,
   "end_elevation_m": 481.2114067208463,
   "min_gradient_pct": -4.927618249294596
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.169645832811664,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 267.0,
   "end_distance_m": 270.0,
   "start_elevation_m": 480.58705059861484,
   "end_elevation_m": 481.3121399735992,
   "min_gradient_pct": -4.491232361309964
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.76763239342563,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 878.0,
   "end_distance_m": 883.0,
   "start_elevation_m": 540.4625015694189,
   "end_elevation_m": 541.5508831890902,
   "min_gradient_pct": -3.8718234108512206
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.142019799360696,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 875.0,
   "end_distance_m": 885.0,
   "start_elevation_m": 539.8400290089503,
   "end_elevation_m": 541.9542309888864,
   "min_gradient_pct": -2.943660254821907
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.82484077382901,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 865.0,
   "end_distance_m": 885.0,
   "start_elevation_m": 537.7892628341206,
   "end_elevation_m": 541.9542309888864,
   "min_gradient_pct": -1.755304134247524
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.75485988857372,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 864.0,
   "end_distance_m": 889.0,
   "start_elevation_m": 537.5922396959413,
   "end_elevation_m": 542.7809546680847,
   "min_gradient_pct": -1.3452549185815315
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.171044266810895,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 855.0,
   "end_distance_m": 905.0,
   "start_elevation_m": 535.9011974414719,
   "end_elevation_m": 545.4867195748774,
   "min_gradient_pct": -0.1753636270766492
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.82858615911948,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 855.0,
   "end_distance_m": 955.0,
   "start_elevation_m": 535.9011974414719,
   "end_elevation_m": 552.7297836005914,
   "min_gradient_pct": 1.2784671609906582
  }
 ],
 "shape": {
  "ascent_concentration": 0.434,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 278.0,
  "shape_class": "sustained"
 },
 "length_m": 1010.9132364542468,
 "start_elevation_m": 471.5196007983667,
 "end_elevation_m": 559.6834796381952,
 "endpoint_gain_m": 88.1638788398285,
 "overall_gradient_pct": 8.721211243514936,
 "accumulated_ascent_m": 89.36508370435496,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.76763239342563,
   "start_distance_m": 878.0,
   "end_distance_m": 883.0,
   "midpoint_distance_m": 880.5,
   "start_elevation_m": 540.4625015694189,
   "end_elevation_m": 541.5508831890902,
   "start_xy": [
    817120.0674789808,
    6527851.106248355
   ],
   "end_xy": [
    817120.3307234237,
    6527856.09208765
   ]
  },
  "max_10m": {
   "gradient_pct": 21.142019799360696,
   "start_distance_m": 875.0,
   "end_distance_m": 885.0,
   "midpoint_distance_m": 880.0,
   "start_elevation_m": 539.8400290089503,
   "end_elevation_m": 541.9542309888864,
   "start_xy": [
    817120.0519362289,
    6527848.1062886175
   ],
   "end_xy": [
    817120.5571226665,
    6527858.07923218
   ]
  },
  "max_20m": {
   "gradient_pct": 20.82484077382901,
   "start_distance_m": 865.0,
   "end_distance_m": 885.0,
   "midpoint_distance_m": 875.0,
   "start_elevation_m": 537.7892628341206,
   "end_elevation_m": 541.9542309888864,
   "start_xy": [
    817120.0001270559,
    6527838.106422828
   ],
   "end_xy": [
    817120.5571226665,
    6527858.07923218
   ]
  },
  "max_25m": {
   "gradient_pct": 20.75485988857372,
   "start_distance_m": 864.0,
   "end_distance_m": 889.0,
   "midpoint_distance_m": 876.5,
   "start_elevation_m": 537.5922396959413,
   "end_elevation_m": 542.7809546680847,
   "start_xy": [
    817119.9949461386,
    6527837.106436249
   ],
   "end_xy": [
    817121.0099211521,
    6527862.053521239
   ]
  },
  "max_50m": {
   "gradient_pct": 19.171044266810895,
   "start_distance_m": 855.0,
   "end_distance_m": 905.0,
   "midpoint_distance_m": 880.0,
   "start_elevation_m": 535.9011974414719,
   "end_elevation_m": 545.4867195748774,
   "start_xy": [
    817119.9483178831,
    6527828.106557039
   ],
   "end_xy": [
    817122.8211150945,
    6527877.950677479
   ]
  },
  "max_100m": {
   "gradient_pct": 16.82858615911948,
   "start_distance_m": 855.0,
   "end_distance_m": 955.0,
   "midpoint_distance_m": 905.0,
   "start_elevation_m": 535.9011974414719,
   "end_elevation_m": 552.7297836005914,
   "start_xy": [
    817119.9483178831,
    6527828.106557039
   ],
   "end_xy": [
    817132.3481381045,
    6527926.894396937
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -3.8718234108512206,
   "start_distance_m": 3.0,
   "end_distance_m": 8.0,
   "midpoint_distance_m": 5.5,
   "start_elevation_m": 471.47020636801,
   "end_elevation_m": 471.27661519746744,
   "start_xy": [
    817402.5774641766,
    6527396.104322787
   ],
   "end_xy": [
    817407.5732378042,
    6527396.309860766
   ]
  },
  "min_10m": {
   "gradient_pct": -2.943660254821907,
   "start_distance_m": 1.0,
   "end_distance_m": 11.0,
   "midpoint_distance_m": 6.0,
   "start_elevation_m": 471.5076262005562,
   "end_elevation_m": 471.213260175074,
   "start_xy": [
    817400.5791547255,
    6527396.022107596
   ],
   "end_xy": [
    817410.5707019808,
    6527396.433183554
   ]
  },
  "min_20m": {
   "gradient_pct": -1.755304134247524,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 471.5196007983667,
   "end_elevation_m": 471.1685399715172,
   "start_xy": [
    817399.58,
    6527395.981
   ],
   "end_xy": [
    817419.5630945107,
    6527396.803151916
   ]
  },
  "min_25m": {
   "gradient_pct": -1.3452549185815315,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 471.5196007983667,
   "end_elevation_m": 471.1832870687213,
   "start_xy": [
    817399.58,
    6527395.981
   ],
   "end_xy": [
    817424.5588681385,
    6527397.008689894
   ]
  },
  "min_50m": {
   "gradient_pct": -0.1753636270766492,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 471.5196007983667,
   "end_elevation_m": 471.43191898482837,
   "start_xy": [
    817399.58,
    6527395.981
   ],
   "end_xy": [
    817448.2985730042,
    6527404.421936282
   ]
  },
  "min_100m": {
   "gradient_pct": 1.2784671609906582,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 471.5196007983667,
   "end_elevation_m": 472.79806795935735,
   "start_xy": [
    817399.58,
    6527395.981
   ],
   "end_xy": [
    817487.8039718666,
    6527434.576592338
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 31.217806111573054,
   "start_distance_m": 267.0,
   "end_distance_m": 269.0,
   "midpoint_distance_m": 268.0,
   "start_elevation_m": 480.58705059861484,
   "end_elevation_m": 481.2114067208463,
   "start_xy": [
    817371.2987460454,
    6527548.210028308
   ],
   "end_xy": [
    817369.7166492285,
    6527549.433535424
   ]
  },
  "max_3m": {
   "gradient_pct": 24.169645832811664,
   "start_distance_m": 267.0,
   "end_distance_m": 270.0,
   "midpoint_distance_m": 268.5,
   "start_elevation_m": 480.58705059861484,
   "end_elevation_m": 481.3121399735992,
   "start_xy": [
    817371.2987460454,
    6527548.210028308
   ],
   "end_xy": [
    817368.9256008201,
    6527550.045288982
   ]
  }
 },
 "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": 0.19,
   "obstruction_max_height_m": 17.66,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "076a8e7f889cfb3c2cf6b3de65a6030c7155b1f0",
   "code_git_dirty": "false",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:8c94015b54267da4",
   "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-mc8",
   "road_pbf": "block-batch-fr-mc8.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:af4eae1f5df9e232"
  },
  "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_E817-N6527_0m5@22LHD4NL-2025-08-06.tif",
   "data/cache/fr/ign-lidarhd_dtm_E817-N6528_0m5@22LHD4NL-2025-08-06.tif"
  ],
  "calculated_at": "2026-09-22T15:19:19+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc8.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc8",
  "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": [
   "E817-N6527",
   "E817-N6528"
  ],
  "elevation_blocks": [
   "22LHD4NL@2025-08-06"
  ],
  "ign_dalles": [
   "LHD_FXX_0817_6528_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0817_6529_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD4NL"
  ],
  "ign_editions": [
   "2025-08-06"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0817_6528_MNT_O_0M50_LAMB93_IGN69": "2025-08-06",
   "LHD_FXX_0817_6529_MNT_O_0M50_LAMB93_IGN69": "2025-08-06"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 6,
  "carriageway": {
   "stations": 47,
   "stations_resolved": 47,
   "width_median_m": 4.0,
   "width_p10_m": 2.75,
   "width_min_m": 2.25,
   "width_max_m": 8.5,
   "bounded_share": 0.426,
   "unbounded_share": 0.574,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.88,
   "window_m": [
    864.0,
    889.0
   ],
   "width_at_max25_m": 3.75,
   "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": 47,
    "stations_resolved": 47,
    "width_median_m": 4.25,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.766,
    "unbounded_share": 0.234,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.12,
    "window_m": [
     864.0,
     889.0
    ],
    "width_at_max25_m": 3.75,
    "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": "Ancy",
  "county": "Rh\u00f4ne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}