{
 "ocl_version": "0.1.0",
 "name": "Chemin du Mas de la Faye",
 "slug": "chemin-du-mas-de-la-faye",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.25656915928107,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 299.0,
   "end_distance_m": 301.0,
   "start_elevation_m": 839.4971758971298,
   "end_elevation_m": 839.9623072803154,
   "min_gradient_pct": -1.1240711698917494
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.587104075607083,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 302.0,
   "end_distance_m": 305.0,
   "start_elevation_m": 840.1614481273853,
   "end_elevation_m": 840.8390612496535,
   "min_gradient_pct": -0.8287316432150268
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.32897948025311,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 300.0,
   "end_distance_m": 305.0,
   "start_elevation_m": 839.7226122756408,
   "end_elevation_m": 840.8390612496535,
   "min_gradient_pct": 0.6420708802647823
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.728050969620654,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 299.0,
   "end_distance_m": 309.0,
   "start_elevation_m": 839.4971758971298,
   "end_elevation_m": 841.6699809940918,
   "min_gradient_pct": 2.9530725685356174
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.350952195051036,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 295.0,
   "end_distance_m": 315.0,
   "start_elevation_m": 838.7093502376431,
   "end_elevation_m": 842.9795406766533,
   "min_gradient_pct": 4.978890718604134
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.988792171993737,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 294.0,
   "end_distance_m": 319.0,
   "start_elevation_m": 838.5174696544874,
   "end_elevation_m": 843.7646676974858,
   "min_gradient_pct": 6.038857512981849
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.6808621654111,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 291.0,
   "end_distance_m": 341.0,
   "start_elevation_m": 838.0341534458023,
   "end_elevation_m": 847.8745845285079,
   "min_gradient_pct": 8.887482799158079
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.301872176965503,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 287.0,
   "end_distance_m": 387.0,
   "start_elevation_m": 837.3261318784923,
   "end_elevation_m": 856.6280040554578,
   "min_gradient_pct": 10.854271783249146
  }
 ],
 "shape": {
  "ascent_concentration": 0.334,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 289.0,
  "shape_class": "sustained"
 },
 "length_m": 479.7592631441769,
 "start_elevation_m": 802.1603247619803,
 "end_elevation_m": 870.430485327184,
 "endpoint_gain_m": 68.2701605652037,
 "overall_gradient_pct": 14.230087006092303,
 "accumulated_ascent_m": 68.29611606581147,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.32897948025311,
   "start_distance_m": 300.0,
   "end_distance_m": 305.0,
   "midpoint_distance_m": 302.5,
   "start_elevation_m": 839.7226122756408,
   "end_elevation_m": 840.8390612496535,
   "start_xy": [
    773715.7104555293,
    6418224.635754753
   ],
   "end_xy": [
    773714.9882106788,
    6418219.688193498
   ]
  },
  "max_10m": {
   "gradient_pct": 21.728050969620654,
   "start_distance_m": 299.0,
   "end_distance_m": 309.0,
   "midpoint_distance_m": 304.0,
   "start_elevation_m": 839.4971758971298,
   "end_elevation_m": 841.6699809940918,
   "start_xy": [
    773715.8549044994,
    6418225.625267005
   ],
   "end_xy": [
    773714.4104147984,
    6418215.730144493
   ]
  },
  "max_20m": {
   "gradient_pct": 21.350952195051036,
   "start_distance_m": 295.0,
   "end_distance_m": 315.0,
   "midpoint_distance_m": 305.0,
   "start_elevation_m": 838.7093502376431,
   "end_elevation_m": 842.9795406766533,
   "start_xy": [
    773716.394427647,
    6418229.588668486
   ],
   "end_xy": [
    773713.5437209778,
    6418209.793070987
   ]
  },
  "max_25m": {
   "gradient_pct": 20.988792171993737,
   "start_distance_m": 294.0,
   "end_distance_m": 319.0,
   "midpoint_distance_m": 306.5,
   "start_elevation_m": 838.5174696544874,
   "end_elevation_m": 843.7646676974858,
   "start_xy": [
    773716.5269797969,
    6418230.579844519
   ],
   "end_xy": [
    773712.9659250975,
    6418205.835021983
   ]
  },
  "max_50m": {
   "gradient_pct": 19.6808621654111,
   "start_distance_m": 291.0,
   "end_distance_m": 341.0,
   "midpoint_distance_m": 316.0,
   "start_elevation_m": 838.0341534458023,
   "end_elevation_m": 847.8745845285079,
   "start_xy": [
    773716.9246362469,
    6418233.553372617
   ],
   "end_xy": [
    773713.1515834501,
    6418184.346113663
   ]
  },
  "max_100m": {
   "gradient_pct": 19.301872176965503,
   "start_distance_m": 287.0,
   "end_distance_m": 387.0,
   "midpoint_distance_m": 337.0,
   "start_elevation_m": 837.3261318784923,
   "end_elevation_m": 856.6280040554578,
   "start_xy": [
    773717.4548448467,
    6418237.518076747
   ],
   "end_xy": [
    773735.5821199097,
    6418145.392521723
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.6420708802647823,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 802.1603247619803,
   "end_elevation_m": 802.1924283059935,
   "start_xy": [
    773856.163,
    6418465.475
   ],
   "end_xy": [
    773857.0628504034,
    6418460.556639576
   ]
  },
  "min_10m": {
   "gradient_pct": 2.9530725685356174,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 802.1603247619803,
   "end_elevation_m": 802.4556320188339,
   "start_xy": [
    773856.163,
    6418465.475
   ],
   "end_xy": [
    773855.4758355891,
    6418456.024578973
   ]
  },
  "min_20m": {
   "gradient_pct": 4.978890718604134,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 802.1603247619803,
   "end_elevation_m": 803.1561029057011,
   "start_xy": [
    773856.163,
    6418465.475
   ],
   "end_xy": [
    773848.6580529471,
    6418448.732562896
   ]
  },
  "min_25m": {
   "gradient_pct": 6.038857512981849,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 802.1603247619803,
   "end_elevation_m": 803.6700391402258,
   "start_xy": [
    773856.163,
    6418465.475
   ],
   "end_xy": [
    773844.660943064,
    6418445.728713268
   ]
  },
  "min_50m": {
   "gradient_pct": 8.887482799158079,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 802.1603247619803,
   "end_elevation_m": 806.6040661615593,
   "start_xy": [
    773856.163,
    6418465.475
   ],
   "end_xy": [
    773824.3492855417,
    6418431.163157011
   ]
  },
  "min_100m": {
   "gradient_pct": 10.854271783249146,
   "start_distance_m": 119.0,
   "end_distance_m": 219.0,
   "midpoint_distance_m": 169.0,
   "start_elevation_m": 816.3146945505537,
   "end_elevation_m": 827.1689663338028,
   "start_xy": [
    773774.4504175067,
    6418384.372388491
   ],
   "end_xy": [
    773722.2489750105,
    6418305.273430085
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.25656915928107,
   "start_distance_m": 299.0,
   "end_distance_m": 301.0,
   "midpoint_distance_m": 300.0,
   "start_elevation_m": 839.4971758971298,
   "end_elevation_m": 839.9623072803154,
   "start_xy": [
    773715.8549044994,
    6418225.625267005
   ],
   "end_xy": [
    773715.5660065592,
    6418223.646242502
   ]
  },
  "max_3m": {
   "gradient_pct": 22.587104075607083,
   "start_distance_m": 302.0,
   "end_distance_m": 305.0,
   "midpoint_distance_m": 303.5,
   "start_elevation_m": 840.1614481273853,
   "end_elevation_m": 840.8390612496535,
   "start_xy": [
    773715.4215575891,
    6418222.656730251
   ],
   "end_xy": [
    773714.9882106788,
    6418219.688193498
   ]
  }
 },
 "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": 0.129,
   "obstruction_max_height_m": 15.54,
   "flagged_windows_m": [
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier",
   "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_E773-N6418_0m5@21LHD4MN-2024-12-13.tif"
  ],
  "calculated_at": "2026-09-22T17:30:55+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": [
   "E773-N6418"
  ],
  "elevation_blocks": [
   "21LHD4MN@2024-12-13"
  ],
  "ign_dalles": [
   "LHD_FXX_0773_6419_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD4MN"
  ],
  "ign_editions": [
   "2024-12-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0773_6419_MNT_O_0M50_LAMB93_IGN69": "2024-12-13"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 26,
   "stations_resolved": 26,
   "width_median_m": 4.5,
   "width_p10_m": 3.12,
   "width_min_m": 2.75,
   "width_max_m": 11.5,
   "bounded_share": 0.346,
   "unbounded_share": 0.654,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.75,
   "window_m": [
    294.0,
    319.0
   ],
   "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": 26,
    "stations_resolved": 26,
    "width_median_m": 4.5,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 10.5,
    "bounded_share": 0.962,
    "unbounded_share": 0.038,
    "confidence_median": 1.0,
    "width_median_bounded_m": 4.5,
    "window_m": [
     294.0,
     319.0
    ],
    "width_at_max25_m": 4.0,
    "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": "Vielprat",
  "county": "Haute-Loire",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}