{
 "ocl_version": "0.1.0",
 "name": "Chemin des Mont\u00e9es",
 "slug": "chemin-des-montees",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.326582652631032,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 230.0,
   "end_distance_m": 232.0,
   "start_elevation_m": 582.9424714475675,
   "end_elevation_m": 583.3690031006201,
   "min_gradient_pct": 3.5535919935512084
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.15639940076335,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 229.0,
   "end_distance_m": 232.0,
   "start_elevation_m": 582.7343111185972,
   "end_elevation_m": 583.3690031006201,
   "min_gradient_pct": 3.8107546173970754
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.02591670898846,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 227.0,
   "end_distance_m": 232.0,
   "start_elevation_m": 582.3177072651707,
   "end_elevation_m": 583.3690031006201,
   "min_gradient_pct": 3.99411765340119
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.949430195521472,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 233.0,
   "end_distance_m": 243.0,
   "start_elevation_m": 583.5640052369974,
   "end_elevation_m": 585.6589482565496,
   "min_gradient_pct": 4.405092456578359
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.900753257406564,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 230.0,
   "end_distance_m": 250.0,
   "start_elevation_m": 582.9424714475675,
   "end_elevation_m": 587.1226220990488,
   "min_gradient_pct": 4.640321351602097
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.868515634638698,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 229.0,
   "end_distance_m": 254.0,
   "start_elevation_m": 582.7343111185972,
   "end_elevation_m": 587.9514400272569,
   "min_gradient_pct": 4.672409698674073
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.433916915095097,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 207.0,
   "end_distance_m": 257.0,
   "start_elevation_m": 578.3493172134869,
   "end_elevation_m": 588.5662756710344,
   "min_gradient_pct": 5.072884644856231
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.111829441454915,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 166.0,
   "end_distance_m": 266.0,
   "start_elevation_m": 571.1315332269071,
   "end_elevation_m": 590.243362668362,
   "min_gradient_pct": 7.449852497435472
  }
 ],
 "shape": {
  "ascent_concentration": 0.36,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 373.0,
  "shape_class": "sustained"
 },
 "length_m": 546.9619287344079,
 "start_elevation_m": 553.9890921679754,
 "end_elevation_m": 624.3337273725626,
 "endpoint_gain_m": 70.34463520458723,
 "overall_gradient_pct": 12.860974687462198,
 "accumulated_ascent_m": 70.34463520458723,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.02591670898846,
   "start_distance_m": 227.0,
   "end_distance_m": 232.0,
   "midpoint_distance_m": 229.5,
   "start_elevation_m": 582.3177072651707,
   "end_elevation_m": 583.3690031006201,
   "start_xy": [
    772320.1866957698,
    6531689.148699722
   ],
   "end_xy": [
    772315.1965678207,
    6531689.462742795
   ]
  },
  "max_10m": {
   "gradient_pct": 20.949430195521472,
   "start_distance_m": 233.0,
   "end_distance_m": 243.0,
   "midpoint_distance_m": 238.0,
   "start_elevation_m": 583.5640052369974,
   "end_elevation_m": 585.6589482565496,
   "start_xy": [
    772314.1985422309,
    6531689.525551409
   ],
   "end_xy": [
    772304.2182863328,
    6531690.153637556
   ]
  },
  "max_20m": {
   "gradient_pct": 20.900753257406564,
   "start_distance_m": 230.0,
   "end_distance_m": 250.0,
   "midpoint_distance_m": 240.0,
   "start_elevation_m": 582.9424714475675,
   "end_elevation_m": 587.1226220990488,
   "start_xy": [
    772317.1926190003,
    6531689.337125566
   ],
   "end_xy": [
    772297.232107204,
    6531690.59329786
   ]
  },
  "max_25m": {
   "gradient_pct": 20.868515634638698,
   "start_distance_m": 229.0,
   "end_distance_m": 254.0,
   "midpoint_distance_m": 241.5,
   "start_elevation_m": 582.7343111185972,
   "end_elevation_m": 587.9514400272569,
   "start_xy": [
    772318.1906445902,
    6531689.274316952
   ],
   "end_xy": [
    772293.2400048448,
    6531690.8445323175
   ]
  },
  "max_50m": {
   "gradient_pct": 20.433916915095097,
   "start_distance_m": 207.0,
   "end_distance_m": 257.0,
   "midpoint_distance_m": 232.0,
   "start_elevation_m": 578.3493172134869,
   "end_elevation_m": 588.5662756710344,
   "start_xy": [
    772340.1466053218,
    6531687.96187721
   ],
   "end_xy": [
    772290.2459280754,
    6531691.032958162
   ]
  },
  "max_100m": {
   "gradient_pct": 19.111829441454915,
   "start_distance_m": 166.0,
   "end_distance_m": 266.0,
   "midpoint_distance_m": 216.0,
   "start_elevation_m": 571.1315332269071,
   "end_elevation_m": 590.243362668362,
   "start_xy": [
    772379.3206464062,
    6531698.629073303
   ],
   "end_xy": [
    772281.263697767,
    6531691.598235694
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 3.99411765340119,
   "start_distance_m": 4.0,
   "end_distance_m": 9.0,
   "midpoint_distance_m": 6.5,
   "start_elevation_m": 554.1930818990312,
   "end_elevation_m": 554.3927877817013,
   "start_xy": [
    772536.8463781644,
    6531718.461001882
   ],
   "end_xy": [
    772531.8693508698,
    6531717.982254235
   ]
  },
  "min_10m": {
   "gradient_pct": 4.405092456578359,
   "start_distance_m": 4.0,
   "end_distance_m": 14.0,
   "midpoint_distance_m": 9.0,
   "start_elevation_m": 554.1930818990312,
   "end_elevation_m": 554.633591144689,
   "start_xy": [
    772536.8463781644,
    6531718.461001882
   ],
   "end_xy": [
    772526.8923235753,
    6531717.503506588
   ]
  },
  "min_20m": {
   "gradient_pct": 4.640321351602097,
   "start_distance_m": 2.0,
   "end_distance_m": 22.0,
   "midpoint_distance_m": 12.0,
   "start_elevation_m": 554.0987183328671,
   "end_elevation_m": 555.0267826031875,
   "start_xy": [
    772538.8371890822,
    6531718.6525009405
   ],
   "end_xy": [
    772518.9290799041,
    6531716.737510352
   ]
  },
  "min_25m": {
   "gradient_pct": 4.672409698674073,
   "start_distance_m": 2.0,
   "end_distance_m": 27.0,
   "midpoint_distance_m": 14.5,
   "start_elevation_m": 554.0987183328671,
   "end_elevation_m": 555.2668207575356,
   "start_xy": [
    772538.8371890822,
    6531718.6525009405
   ],
   "end_xy": [
    772513.9520526095,
    6531716.258762705
   ]
  },
  "min_50m": {
   "gradient_pct": 5.072884644856231,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 553.9890921679754,
   "end_elevation_m": 556.5255344904035,
   "start_xy": [
    772540.828,
    6531718.844
   ],
   "end_xy": [
    772491.0577270548,
    6531714.056523528
   ]
  },
  "min_100m": {
   "gradient_pct": 7.449852497435472,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 553.9890921679754,
   "end_elevation_m": 561.4389446654109,
   "start_xy": [
    772540.828,
    6531718.844
   ],
   "end_xy": [
    772442.2324362465,
    6531703.518121741
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.326582652631032,
   "start_distance_m": 230.0,
   "end_distance_m": 232.0,
   "midpoint_distance_m": 231.0,
   "start_elevation_m": 582.9424714475675,
   "end_elevation_m": 583.3690031006201,
   "start_xy": [
    772317.1926190003,
    6531689.337125566
   ],
   "end_xy": [
    772315.1965678207,
    6531689.462742795
   ]
  },
  "max_3m": {
   "gradient_pct": 21.15639940076335,
   "start_distance_m": 229.0,
   "end_distance_m": 232.0,
   "midpoint_distance_m": 230.5,
   "start_elevation_m": 582.7343111185972,
   "end_elevation_m": 583.3690031006201,
   "start_xy": [
    772318.1906445902,
    6531689.274316952
   ],
   "end_xy": [
    772315.1965678207,
    6531689.462742795
   ]
  }
 },
 "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": 0.051,
   "obstruction_max_height_m": 14.27,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "1cc9fdcd6556a02163cb21acb2293cad3067d2a1",
   "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-mc6",
   "road_pbf": "block-batch-fr-mc6.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_E771-N6531_0m5@22LHD4ML-2025-09-15.tif",
   "data/cache/fr/ign-lidarhd_dtm_E772-N6531_0m5@22LHD4ML-2025-09-15.tif"
  ],
  "calculated_at": "2026-09-22T17:58:29+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc6.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc6",
  "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": [
   "E771-N6531",
   "E772-N6531"
  ],
  "elevation_blocks": [
   "22LHD4ML@2025-09-15"
  ],
  "ign_dalles": [
   "LHD_FXX_0771_6532_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0772_6532_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD4ML"
  ],
  "ign_editions": [
   "2025-09-15"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0771_6532_MNT_O_0M50_LAMB93_IGN69": "2025-09-15",
   "LHD_FXX_0772_6532_MNT_O_0M50_LAMB93_IGN69": "2025-09-15"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 28,
   "stations_resolved": 28,
   "width_median_m": 5.25,
   "width_p10_m": 3.85,
   "width_min_m": 2.75,
   "width_max_m": 11.25,
   "bounded_share": 0.286,
   "unbounded_share": 0.714,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.62,
   "window_m": [
    229.0,
    254.0
   ],
   "width_at_max25_m": 5.5,
   "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": 28,
    "stations_resolved": 28,
    "width_median_m": 6.88,
    "width_p10_m": 3.15,
    "width_min_m": 1.0,
    "width_max_m": 9.5,
    "bounded_share": 0.893,
    "unbounded_share": 0.107,
    "confidence_median": 1.0,
    "width_median_bounded_m": 6.5,
    "window_m": [
     229.0,
     254.0
    ],
    "width_at_max25_m": 6.75,
    "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": "Lur\u00e9",
  "county": "Loire",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}