{
 "ocl_version": "0.1.0",
 "name": "Chemin de Lohiola",
 "slug": "chemin-de-lohiola-2-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.61915170894622,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1034.0,
   "end_distance_m": 1036.0,
   "start_elevation_m": 255.4790618535842,
   "end_elevation_m": 255.99144488776312,
   "min_gradient_pct": -11.69421117723033
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.056578041541872,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1012.0,
   "end_distance_m": 1015.0,
   "start_elevation_m": 250.27957398230035,
   "end_elevation_m": 251.0312713235466,
   "min_gradient_pct": -10.263877570244517
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.873328660471543,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1032.0,
   "end_distance_m": 1037.0,
   "start_elevation_m": 254.9748381316931,
   "end_elevation_m": 256.2185045647167,
   "min_gradient_pct": -10.009264555059758
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.3305171310638,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1026.0,
   "end_distance_m": 1036.0,
   "start_elevation_m": 253.55839317465674,
   "end_elevation_m": 255.99144488776312,
   "min_gradient_pct": -9.22825762793451
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.969799122865822,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1021.0,
   "end_distance_m": 1041.0,
   "start_elevation_m": 252.37078700333296,
   "end_elevation_m": 257.16474682790613,
   "min_gradient_pct": -8.548226370839984
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.856544365411082,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1021.0,
   "end_distance_m": 1046.0,
   "start_elevation_m": 252.37078700333296,
   "end_elevation_m": 258.33492309468573,
   "min_gradient_pct": -8.337995752638676
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.544308257031442,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 997.0,
   "end_distance_m": 1047.0,
   "start_elevation_m": 246.79777462422103,
   "end_elevation_m": 258.56992875273676,
   "min_gradient_pct": -6.883128812108168
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 21.90041892784913,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 990.0,
   "end_distance_m": 1090.0,
   "start_elevation_m": 245.3658093422956,
   "end_elevation_m": 267.2662282701447,
   "min_gradient_pct": -4.0915832134063805
  }
 ],
 "shape": {
  "ascent_concentration": 0.388,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 324.0,
  "shape_class": "sustained"
 },
 "length_m": 1148.9556458050238,
 "start_elevation_m": 144.98271685271902,
 "end_elevation_m": 277.94169878907445,
 "endpoint_gain_m": 132.95898193635543,
 "overall_gradient_pct": 11.572159675772062,
 "accumulated_ascent_m": 138.88803164076933,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.873328660471543,
   "start_distance_m": 1032.0,
   "end_distance_m": 1037.0,
   "midpoint_distance_m": 1034.5,
   "start_elevation_m": 254.9748381316931,
   "end_elevation_m": 256.2185045647167,
   "start_xy": [
    361442.32886161265,
    6249890.831710156
   ],
   "end_xy": [
    361438.5135049668,
    6249887.600138764
   ]
  },
  "max_10m": {
   "gradient_pct": 24.3305171310638,
   "start_distance_m": 1026.0,
   "end_distance_m": 1036.0,
   "midpoint_distance_m": 1031.0,
   "start_elevation_m": 253.55839317465674,
   "end_elevation_m": 255.99144488776312,
   "start_xy": [
    361446.2269610806,
    6249895.37860834
   ],
   "end_xy": [
    361439.27657629596,
    6249888.246453042
   ]
  },
  "max_20m": {
   "gradient_pct": 23.969799122865822,
   "start_distance_m": 1021.0,
   "end_distance_m": 1041.0,
   "midpoint_distance_m": 1031.0,
   "start_elevation_m": 252.37078700333296,
   "end_elevation_m": 257.16474682790613,
   "start_xy": [
    361449.33804824075,
    6249899.285847597
   ],
   "end_xy": [
    361435.46121965017,
    6249885.014881649
   ]
  },
  "max_25m": {
   "gradient_pct": 23.856544365411082,
   "start_distance_m": 1021.0,
   "end_distance_m": 1046.0,
   "midpoint_distance_m": 1033.5,
   "start_elevation_m": 252.37078700333296,
   "end_elevation_m": 258.33492309468573,
   "start_xy": [
    361449.33804824075,
    6249899.285847597
   ],
   "end_xy": [
    361431.4951511029,
    6249881.98810541
   ]
  },
  "max_50m": {
   "gradient_pct": 23.544308257031442,
   "start_distance_m": 997.0,
   "end_distance_m": 1047.0,
   "midpoint_distance_m": 1022.0,
   "start_elevation_m": 246.79777462422103,
   "end_elevation_m": 258.56992875273676,
   "start_xy": [
    361460.577043922,
    6249920.477938176
   ],
   "end_xy": [
    361430.6511558858,
    6249881.45175471
   ]
  },
  "max_100m": {
   "gradient_pct": 21.90041892784913,
   "start_distance_m": 990.0,
   "end_distance_m": 1090.0,
   "midpoint_distance_m": 1040.0,
   "start_elevation_m": 245.3658093422956,
   "end_elevation_m": 267.2662282701447,
   "start_xy": [
    361463.5888952798,
    6249926.796858289
   ],
   "end_xy": [
    361394.35936155106,
    6249858.388674604
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -10.009264555059758,
   "start_distance_m": 341.0,
   "end_distance_m": 346.0,
   "midpoint_distance_m": 343.5,
   "start_elevation_m": 186.0297199705012,
   "end_elevation_m": 185.5292567427482,
   "start_xy": [
    361164.7787612049,
    6250120.927348206
   ],
   "end_xy": [
    361167.9324704498,
    6250117.04861447
   ]
  },
  "min_10m": {
   "gradient_pct": -9.22825762793451,
   "start_distance_m": 341.0,
   "end_distance_m": 351.0,
   "midpoint_distance_m": 346.0,
   "start_elevation_m": 186.0297199705012,
   "end_elevation_m": 185.10689420770774,
   "start_xy": [
    361164.7787612049,
    6250120.927348206
   ],
   "end_xy": [
    361171.2681494669,
    6250113.32393388
   ]
  },
  "min_20m": {
   "gradient_pct": -8.548226370839984,
   "start_distance_m": 337.0,
   "end_distance_m": 357.0,
   "midpoint_distance_m": 347.0,
   "start_elevation_m": 186.35295928471132,
   "end_elevation_m": 184.64331401054332,
   "start_xy": [
    361162.2802315562,
    6250124.05102386
   ],
   "end_xy": [
    361175.27096428734,
    6250108.854317172
   ]
  },
  "min_25m": {
   "gradient_pct": -8.337995752638676,
   "start_distance_m": 334.0,
   "end_distance_m": 359.0,
   "midpoint_distance_m": 346.5,
   "start_elevation_m": 186.57439810513,
   "end_elevation_m": 184.48989916697033,
   "start_xy": [
    361160.4063343196,
    6250126.393780601
   ],
   "end_xy": [
    361176.60523589415,
    6250107.364444937
   ]
  },
  "min_50m": {
   "gradient_pct": -6.883128812108168,
   "start_distance_m": 330.0,
   "end_distance_m": 380.0,
   "midpoint_distance_m": 355.0,
   "start_elevation_m": 186.76721428524579,
   "end_elevation_m": 183.3256498791917,
   "start_xy": [
    361157.90780467086,
    6250129.517456255
   ],
   "end_xy": [
    361192.4810552222,
    6250094.148393717
   ]
  },
  "min_100m": {
   "gradient_pct": -4.0915832134063805,
   "start_distance_m": 329.0,
   "end_distance_m": 429.0,
   "midpoint_distance_m": 379.0,
   "start_elevation_m": 186.8084624711295,
   "end_elevation_m": 182.71687925772312,
   "start_xy": [
    361157.2831722587,
    6250130.298375169
   ],
   "end_xy": [
    361236.75079275045,
    6250073.462574026
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.61915170894622,
   "start_distance_m": 1034.0,
   "end_distance_m": 1036.0,
   "midpoint_distance_m": 1035.0,
   "start_elevation_m": 255.4790618535842,
   "end_elevation_m": 255.99144488776312,
   "start_xy": [
    361440.8027189543,
    6249889.539081599
   ],
   "end_xy": [
    361439.27657629596,
    6249888.246453042
   ]
  },
  "max_3m": {
   "gradient_pct": 25.056578041541872,
   "start_distance_m": 1012.0,
   "end_distance_m": 1015.0,
   "midpoint_distance_m": 1013.5,
   "start_elevation_m": 250.27957398230035,
   "end_elevation_m": 251.0312713235466,
   "start_xy": [
    361453.74065508955,
    6249907.1355006425
   ],
   "end_xy": [
    361452.2731194733,
    6249904.518949627
   ]
  }
 },
 "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": 0.076,
   "obstruction_max_height_m": 25.87,
   "flagged_windows_m": [
    3,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "06fa4c370391597f015858e97dcf01ca2f5b3640",
   "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-pyr1",
   "road_pbf": "block-batch-fr-pyr1.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:c54ac68b3f57b41b"
  },
  "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_E360-N6249_0m5@21LHD1EQ-2025-09-26.tif",
   "data/cache/fr/ign-lidarhd_dtm_E360-N6250_0m5@21LHD1EQ-2025-09-26.tif",
   "data/cache/fr/ign-lidarhd_dtm_E361-N6249_0m5@21LHD1EQ-2025-09-26.tif",
   "data/cache/fr/ign-lidarhd_dtm_E361-N6250_0m5@21LHD1EQ-2025-09-26.tif"
  ],
  "calculated_at": "2026-09-20T06:17:54+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pyr1.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pyr1",
  "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": [
   "E360-N6249",
   "E360-N6250",
   "E361-N6249",
   "E361-N6250"
  ],
  "elevation_blocks": [
   "21LHD1EQ@2025-09-26"
  ],
  "ign_dalles": [
   "LHD_FXX_0360_6250_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0360_6251_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0361_6250_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0361_6251_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD1EQ"
  ],
  "ign_editions": [
   "2025-09-26"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0360_6250_MNT_O_0M50_LAMB93_IGN69": "2025-09-26",
   "LHD_FXX_0360_6251_MNT_O_0M50_LAMB93_IGN69": "2025-09-26",
   "LHD_FXX_0361_6250_MNT_O_0M50_LAMB93_IGN69": "2025-09-26",
   "LHD_FXX_0361_6251_MNT_O_0M50_LAMB93_IGN69": "2025-09-26"
  },
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 52,
   "stations_resolved": 52,
   "width_median_m": 6.0,
   "width_p10_m": 4.53,
   "width_min_m": 3.75,
   "width_max_m": 10.75,
   "bounded_share": 0.25,
   "unbounded_share": 0.75,
   "confidence_median": 0.0,
   "width_median_bounded_m": 6.25,
   "window_m": [
    1021.0,
    1046.0
   ],
   "width_at_max25_m": 6.25,
   "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": 52,
    "stations_resolved": 52,
    "width_median_m": 8.25,
    "width_p10_m": 2.28,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.577,
    "unbounded_share": 0.423,
    "confidence_median": 0.931,
    "width_median_bounded_m": 6.75,
    "window_m": [
     1021.0,
     1046.0
    ],
    "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": "Iholdy",
  "county": "Pyr\u00e9n\u00e9es-Atlantiques",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}