{
 "ocl_version": "0.1.0",
 "name": "Chemin des Vignettes",
 "slug": "chemin-des-vignettes",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 26.70680556106788,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 261.0,
   "end_distance_m": 263.0,
   "start_elevation_m": 500.9401458805518,
   "end_elevation_m": 501.4742819917732,
   "min_gradient_pct": 3.107479911761857
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.325544258248556,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 261.0,
   "end_distance_m": 264.0,
   "start_elevation_m": 500.9401458805518,
   "end_elevation_m": 501.6999122082993,
   "min_gradient_pct": 3.0858366992314736
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.942373067801554,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 261.0,
   "end_distance_m": 266.0,
   "start_elevation_m": 500.9401458805518,
   "end_elevation_m": 502.1372645339419,
   "min_gradient_pct": 3.583931955256503
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.461516275186227,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 261.0,
   "end_distance_m": 271.0,
   "start_elevation_m": 500.9401458805518,
   "end_elevation_m": 503.28629750807045,
   "min_gradient_pct": 4.349478760582883
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.748603107391432,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 261.0,
   "end_distance_m": 281.0,
   "start_elevation_m": 500.9401458805518,
   "end_elevation_m": 505.4898665020301,
   "min_gradient_pct": 5.224798015354395
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.338970252247236,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 257.0,
   "end_distance_m": 282.0,
   "start_elevation_m": 500.11452139986704,
   "end_elevation_m": 505.69926396292885,
   "min_gradient_pct": 5.166272508815837
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.719860064448312,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 232.0,
   "end_distance_m": 282.0,
   "start_elevation_m": 497.3393339307047,
   "end_elevation_m": 505.69926396292885,
   "min_gradient_pct": 6.471173437210041
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 11.733976034243597,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 182.0,
   "end_distance_m": 282.0,
   "start_elevation_m": 493.96528792868526,
   "end_elevation_m": 505.69926396292885,
   "min_gradient_pct": 6.589489064903091
  }
 ],
 "shape": {
  "ascent_concentration": 0.404,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 44.0,
  "shape_class": "sustained"
 },
 "length_m": 282.28761014656146,
 "start_elevation_m": 481.2424638056659,
 "end_elevation_m": 505.7610278198421,
 "endpoint_gain_m": 24.518564014176206,
 "overall_gradient_pct": 8.685667784514655,
 "accumulated_ascent_m": 24.518564014176206,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.942373067801554,
   "start_distance_m": 261.0,
   "end_distance_m": 266.0,
   "midpoint_distance_m": 263.5,
   "start_elevation_m": 500.9401458805518,
   "end_elevation_m": 502.1372645339419,
   "start_xy": [
    703939.741383784,
    6519937.689557603
   ],
   "end_xy": [
    703940.7214430905,
    6519942.592565225
   ]
  },
  "max_10m": {
   "gradient_pct": 23.461516275186227,
   "start_distance_m": 261.0,
   "end_distance_m": 271.0,
   "midpoint_distance_m": 266.0,
   "start_elevation_m": 500.9401458805518,
   "end_elevation_m": 503.28629750807045,
   "start_xy": [
    703939.741383784,
    6519937.689557603
   ],
   "end_xy": [
    703941.701502397,
    6519947.495572849
   ]
  },
  "max_20m": {
   "gradient_pct": 22.748603107391432,
   "start_distance_m": 261.0,
   "end_distance_m": 281.0,
   "midpoint_distance_m": 271.0,
   "start_elevation_m": 500.9401458805518,
   "end_elevation_m": 505.4898665020301,
   "start_xy": [
    703939.741383784,
    6519937.689557603
   ],
   "end_xy": [
    703945.0814902809,
    6519956.882616003
   ]
  },
  "max_25m": {
   "gradient_pct": 22.338970252247236,
   "start_distance_m": 257.0,
   "end_distance_m": 282.0,
   "midpoint_distance_m": 269.5,
   "start_elevation_m": 500.11452139986704,
   "end_elevation_m": 505.69926396292885,
   "start_xy": [
    703938.9573363387,
    6519933.767151504
   ],
   "end_xy": [
    703945.4492333593,
    6519957.812543435
   ]
  },
  "max_50m": {
   "gradient_pct": 16.719860064448312,
   "start_distance_m": 232.0,
   "end_distance_m": 282.0,
   "midpoint_distance_m": 257.0,
   "start_elevation_m": 497.3393339307047,
   "end_elevation_m": 505.69926396292885,
   "start_xy": [
    703928.7512417558,
    6519911.291101248
   ],
   "end_xy": [
    703945.4492333593,
    6519957.812543435
   ]
  },
  "max_100m": {
   "gradient_pct": 11.733976034243597,
   "start_distance_m": 182.0,
   "end_distance_m": 282.0,
   "midpoint_distance_m": 232.0,
   "start_elevation_m": 493.96528792868526,
   "end_elevation_m": 505.69926396292885,
   "start_xy": [
    703931.902819608,
    6519863.860753253
   ],
   "end_xy": [
    703945.4492333593,
    6519957.812543435
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 3.583931955256503,
   "start_distance_m": 228.0,
   "end_distance_m": 233.0,
   "midpoint_distance_m": 230.5,
   "start_elevation_m": 497.2063668021247,
   "end_elevation_m": 497.38556339988753,
   "start_xy": [
    703925.9378930695,
    6519908.4476756435
   ],
   "end_xy": [
    703929.4545789274,
    6519912.001957649
   ]
  },
  "min_10m": {
   "gradient_pct": 4.349478760582883,
   "start_distance_m": 17.0,
   "end_distance_m": 27.0,
   "midpoint_distance_m": 22.0,
   "start_elevation_m": 482.1964051132632,
   "end_elevation_m": 482.6313529893215,
   "start_xy": [
    703977.1247583973,
    6519707.177241714
   ],
   "end_xy": [
    703973.5965700691,
    6519715.831165123
   ]
  },
  "min_20m": {
   "gradient_pct": 5.224798015354395,
   "start_distance_m": 6.0,
   "end_distance_m": 26.0,
   "midpoint_distance_m": 16.0,
   "start_elevation_m": 481.5434229389435,
   "end_elevation_m": 482.58838254201436,
   "start_xy": [
    703971.7267620679,
    6519697.757256535
   ],
   "end_xy": [
    703974.0683264224,
    6519714.949436171
   ]
  },
  "min_25m": {
   "gradient_pct": 5.166272508815837,
   "start_distance_m": 2.0,
   "end_distance_m": 27.0,
   "midpoint_distance_m": 14.5,
   "start_elevation_m": 481.33978486211754,
   "end_elevation_m": 482.6313529893215,
   "start_xy": [
    703970.1191285066,
    6519694.094537344
   ],
   "end_xy": [
    703973.5965700691,
    6519715.831165123
   ]
  },
  "min_50m": {
   "gradient_pct": 6.471173437210041,
   "start_distance_m": 161.0,
   "end_distance_m": 211.0,
   "midpoint_distance_m": 186.0,
   "start_elevation_m": 492.5819532230752,
   "end_elevation_m": 495.8175399416802,
   "start_xy": [
    703935.6297097282,
    6519843.1941064615
   ],
   "end_xy": [
    703926.7551838082,
    6519892.400231974
   ]
  },
  "min_100m": {
   "gradient_pct": 6.589489064903091,
   "start_distance_m": 110.0,
   "end_distance_m": 210.0,
   "midpoint_distance_m": 160.0,
   "start_elevation_m": 489.1645170368546,
   "end_elevation_m": 495.7540061017577,
   "start_xy": [
    703945.0622647646,
    6519793.077905183
   ],
   "end_xy": [
    703926.9326884908,
    6519891.416112019
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 26.70680556106788,
   "start_distance_m": 261.0,
   "end_distance_m": 263.0,
   "midpoint_distance_m": 262.0,
   "start_elevation_m": 500.9401458805518,
   "end_elevation_m": 501.4742819917732,
   "start_xy": [
    703939.741383784,
    6519937.689557603
   ],
   "end_xy": [
    703940.1334075065,
    6519939.650760652
   ]
  },
  "max_3m": {
   "gradient_pct": 25.325544258248556,
   "start_distance_m": 261.0,
   "end_distance_m": 264.0,
   "midpoint_distance_m": 262.5,
   "start_elevation_m": 500.9401458805518,
   "end_elevation_m": 501.6999122082993,
   "start_xy": [
    703939.741383784,
    6519937.689557603
   ],
   "end_xy": [
    703940.3294193678,
    6519940.6313621765
   ]
  }
 },
 "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": 0.102,
   "obstruction_max_height_m": 10.16,
   "flagged_windows_m": [
    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": "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-mc4",
   "road_pbf": "block-batch-fr-mc4.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_E703-N6519_0m5@22LHD4LL-2025-07-24.tif"
  ],
  "calculated_at": "2026-09-22T16:20:17+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc4.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc4",
  "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": [
   "E703-N6519"
  ],
  "elevation_blocks": [
   "22LHD4LL@2025-07-24"
  ],
  "ign_dalles": [
   "LHD_FXX_0703_6520_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD4LL"
  ],
  "ign_editions": [
   "2025-07-24"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0703_6520_MNT_O_0M50_LAMB93_IGN69": "2025-07-24"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 2,
  "carriageway": {
   "stations": 18,
   "stations_resolved": 18,
   "width_median_m": 6.5,
   "width_p10_m": 4.67,
   "width_min_m": 3.75,
   "width_max_m": 12.0,
   "bounded_share": 0.389,
   "unbounded_share": 0.611,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.75,
   "window_m": [
    257.0,
    282.0
   ],
   "width_at_max25_m": 5.75,
   "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": 18,
    "stations_resolved": 18,
    "width_median_m": 3.62,
    "width_p10_m": 1.78,
    "width_min_m": 1.0,
    "width_max_m": 12.0,
    "bounded_share": 0.611,
    "unbounded_share": 0.389,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.5,
    "window_m": [
     257.0,
     282.0
    ],
    "width_at_max25_m": 2.5,
    "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": "Chamali\u00e8res",
  "county": "Puy-de-D\u00f4me",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}