{
 "ocl_version": "0.1.0",
 "name": "Chemin de l'Enclos",
 "slug": "chemin-de-l-enclos",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 34.34338482379644,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 910.0,
   "end_distance_m": 912.0,
   "start_elevation_m": 850.0835684643755,
   "end_elevation_m": 850.7704361608514,
   "min_gradient_pct": -6.097070100088331,
   "suppressed_max_gradient_pct": 58.484340058186035,
   "suppressed_location_m": [
    946.0,
    948.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 33.7270851851334,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 909.0,
   "end_distance_m": 912.0,
   "start_elevation_m": 849.7586236052974,
   "end_elevation_m": 850.7704361608514,
   "min_gradient_pct": -2.5855592459114027,
   "suppressed_max_gradient_pct": 54.818587790733396,
   "suppressed_location_m": [
    946.0,
    949.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 32.1443508623679,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 906.0,
   "end_distance_m": 911.0,
   "start_elevation_m": 848.8197953508378,
   "end_elevation_m": 850.4270128939562,
   "min_gradient_pct": -2.394190252491626,
   "suppressed_max_gradient_pct": 43.36735425601091,
   "suppressed_location_m": [
    945.0,
    950.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 31.407074568419375,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 902.0,
   "end_distance_m": 912.0,
   "start_elevation_m": 847.6297287040095,
   "end_elevation_m": 850.7704361608514,
   "min_gradient_pct": -1.5277944634681262,
   "suppressed_max_gradient_pct": 34.550136708896844,
   "suppressed_location_m": [
    941.0,
    951.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.546751537869227,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 893.0,
   "end_distance_m": 913.0,
   "start_elevation_m": 846.13158211136,
   "end_elevation_m": 851.0409324189338,
   "min_gradient_pct": -1.0180920044410868,
   "suppressed_max_gradient_pct": 26.866331892288713,
   "suppressed_location_m": [
    940.0,
    960.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.867996108808256,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 888.0,
   "end_distance_m": 913.0,
   "start_elevation_m": 845.3239333917318,
   "end_elevation_m": 851.0409324189338,
   "min_gradient_pct": -0.7022063597905799,
   "suppressed_max_gradient_pct": 25.164360406936794,
   "suppressed_location_m": [
    935.0,
    960.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.317754026436887,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 894.0,
   "end_distance_m": 944.0,
   "start_elevation_m": 846.3174990464987,
   "end_elevation_m": 855.4763760597172,
   "min_gradient_pct": 0.606595241623836,
   "suppressed_max_gradient_pct": 21.518759262420645,
   "suppressed_location_m": [
    901.0,
    951.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.00408238635623,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 704.0,
   "end_distance_m": 804.0,
   "start_elevation_m": 818.1065624627456,
   "end_elevation_m": 834.1106448491018,
   "min_gradient_pct": 3.5973083009909033,
   "suppressed_max_gradient_pct": 18.792624820790024,
   "suppressed_location_m": [
    886.0,
    986.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.416,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 225.0,
  "shape_class": "sustained"
 },
 "length_m": 1035.54690987629,
 "start_elevation_m": 766.030467558595,
 "end_elevation_m": 867.0393977109899,
 "endpoint_gain_m": 101.0089301523949,
 "overall_gradient_pct": 9.754162673756785,
 "accumulated_ascent_m": 102.25917377960809,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 32.1443508623679,
   "start_distance_m": 906.0,
   "end_distance_m": 911.0,
   "midpoint_distance_m": 908.5,
   "start_elevation_m": 848.8197953508378,
   "end_elevation_m": 850.4270128939562,
   "start_xy": [
    775657.6927606981,
    6431969.407480584
   ],
   "end_xy": [
    775653.9121491343,
    6431972.679632201
   ]
  },
  "max_10m": {
   "gradient_pct": 31.407074568419375,
   "start_distance_m": 902.0,
   "end_distance_m": 912.0,
   "midpoint_distance_m": 907.0,
   "start_elevation_m": 847.6297287040095,
   "end_elevation_m": 850.7704361608514,
   "start_xy": [
    775660.7172499492,
    6431966.78975929
   ],
   "end_xy": [
    775653.1560268216,
    6431973.334062524
   ]
  },
  "max_20m": {
   "gradient_pct": 24.546751537869227,
   "start_distance_m": 893.0,
   "end_distance_m": 913.0,
   "midpoint_distance_m": 903.0,
   "start_elevation_m": 846.13158211136,
   "end_elevation_m": 851.0409324189338,
   "start_xy": [
    775669.1100935263,
    6431963.6445166
   ],
   "end_xy": [
    775652.3999045088,
    6431973.988492847
   ]
  },
  "max_25m": {
   "gradient_pct": 22.867996108808256,
   "start_distance_m": 888.0,
   "end_distance_m": 913.0,
   "midpoint_distance_m": 900.5,
   "start_elevation_m": 845.3239333917318,
   "end_elevation_m": 851.0409324189338,
   "start_xy": [
    775673.831358389,
    6431961.998412686
   ],
   "end_xy": [
    775652.3999045088,
    6431973.988492847
   ]
  },
  "max_50m": {
   "gradient_pct": 18.317754026436887,
   "start_distance_m": 894.0,
   "end_distance_m": 944.0,
   "midpoint_distance_m": 919.0,
   "start_elevation_m": 846.3174990464987,
   "end_elevation_m": 855.4763760597172,
   "start_xy": [
    775668.1658405538,
    6431963.973737383
   ],
   "end_xy": [
    775636.3918956373,
    6431999.977330371
   ]
  },
  "max_100m": {
   "gradient_pct": 16.00408238635623,
   "start_distance_m": 704.0,
   "end_distance_m": 804.0,
   "midpoint_distance_m": 754.0,
   "start_elevation_m": 818.1065624627456,
   "end_elevation_m": 834.1106448491018,
   "start_xy": [
    775669.3260814163,
    6431866.141863633
   ],
   "end_xy": [
    775743.9484722348,
    6431920.183507701
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.394190252491626,
   "start_distance_m": 271.0,
   "end_distance_m": 276.0,
   "midpoint_distance_m": 273.5,
   "start_elevation_m": 783.630890925248,
   "end_elevation_m": 783.5111814126234,
   "start_xy": [
    775635.1427299139,
    6431574.863554081
   ],
   "end_xy": [
    775631.9761143099,
    6431578.732991459
   ]
  },
  "min_10m": {
   "gradient_pct": -1.5277944634681262,
   "start_distance_m": 270.0,
   "end_distance_m": 280.0,
   "midpoint_distance_m": 275.0,
   "start_elevation_m": 783.6393988358573,
   "end_elevation_m": 783.4866193895105,
   "start_xy": [
    775635.7760530348,
    6431574.089666606
   ],
   "end_xy": [
    775628.822276024,
    6431581.153357212
   ]
  },
  "min_20m": {
   "gradient_pct": -1.0180920044410868,
   "start_distance_m": 267.0,
   "end_distance_m": 287.0,
   "midpoint_distance_m": 277.0,
   "start_elevation_m": 783.6668903799759,
   "end_elevation_m": 783.4632719790877,
   "start_xy": [
    775637.6760223972,
    6431571.76800418
   ],
   "end_xy": [
    775623.0510746624,
    6431585.114825985
   ]
  },
  "min_25m": {
   "gradient_pct": -0.7022063597905799,
   "start_distance_m": 263.0,
   "end_distance_m": 288.0,
   "midpoint_distance_m": 275.5,
   "start_elevation_m": 783.6495607644964,
   "end_elevation_m": 783.4740091745488,
   "start_xy": [
    775639.8268730546,
    6431568.479232585
   ],
   "end_xy": [
    775622.226617325,
    6431585.680750096
   ]
  },
  "min_50m": {
   "gradient_pct": 0.606595241623836,
   "start_distance_m": 255.0,
   "end_distance_m": 305.0,
   "midpoint_distance_m": 280.0,
   "start_elevation_m": 783.511773575008,
   "end_elevation_m": 783.8150711958199,
   "start_xy": [
    775641.6117533897,
    6431560.692940825
   ],
   "end_xy": [
    775607.7908817095,
    6431594.645898592
   ]
  },
  "min_100m": {
   "gradient_pct": 3.5973083009909033,
   "start_distance_m": 209.0,
   "end_distance_m": 309.0,
   "midpoint_distance_m": 259.0,
   "start_elevation_m": 780.4296090684292,
   "end_elevation_m": 784.0269173694201,
   "start_xy": [
    775646.448764447,
    6431514.947959417
   ],
   "end_xy": [
    775604.355821116,
    6431596.695376261
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 34.34338482379644,
   "start_distance_m": 910.0,
   "end_distance_m": 912.0,
   "midpoint_distance_m": 911.0,
   "start_elevation_m": 850.0835684643755,
   "end_elevation_m": 850.7704361608514,
   "start_xy": [
    775654.6682714471,
    6431972.025201878
   ],
   "end_xy": [
    775653.1560268216,
    6431973.334062524
   ]
  },
  "max_3m": {
   "gradient_pct": 33.7270851851334,
   "start_distance_m": 909.0,
   "end_distance_m": 912.0,
   "midpoint_distance_m": 910.5,
   "start_elevation_m": 849.7586236052974,
   "end_elevation_m": 850.7704361608514,
   "start_xy": [
    775655.4243937599,
    6431971.370771554
   ],
   "end_xy": [
    775653.1560268216,
    6431973.334062524
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.006,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.406,
   "obstruction_max_height_m": 21.89,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    945.0,
    950.0
   ]
  ],
  "review": [],
  "extent": []
 },
 "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_E775-N6431_0m5@21LHD4MN-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E775-N6432_0m5@21LHD4MN-2024-12-13.tif"
  ],
  "calculated_at": "2026-09-22T17:33:02+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": [
   "E775-N6431",
   "E775-N6432"
  ],
  "elevation_blocks": [
   "21LHD4MN@2024-12-13"
  ],
  "ign_dalles": [
   "LHD_FXX_0775_6432_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0775_6433_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD4MN"
  ],
  "ign_editions": [
   "2024-12-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0775_6432_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0775_6433_MNT_O_0M50_LAMB93_IGN69": "2024-12-13"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 3,
  "carriageway": {
   "stations": 48,
   "stations_resolved": 48,
   "width_median_m": 4.88,
   "width_p10_m": 1.6,
   "width_min_m": 1.0,
   "width_max_m": 12.0,
   "bounded_share": 0.271,
   "unbounded_share": 0.729,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.0,
   "window_m": [
    888.0,
    913.0
   ],
   "width_at_max25_m": 2.25,
   "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": 48,
    "stations_resolved": 48,
    "width_median_m": 2.75,
    "width_p10_m": 0.93,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.917,
    "unbounded_share": 0.083,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.5,
    "window_m": [
     888.0,
     913.0
    ],
    "width_at_max25_m": 2.25,
    "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": "Arsac-en-Velay",
  "county": "Haute-Loire",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}