{
 "ocl_version": "0.1.0",
 "name": "Chemin des Chevreuils",
 "slug": "chemin-des-chevreuils-3",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 43.54866353305766,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 42.0,
   "end_distance_m": 44.0,
   "start_elevation_m": 156.81283002665123,
   "end_elevation_m": 157.68380329731238,
   "min_gradient_pct": -11.72552163418601,
   "suppressed_max_gradient_pct": 57.14563800250261,
   "suppressed_location_m": [
    88.0,
    90.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 43.08920903543291,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 46.0,
   "end_distance_m": 49.0,
   "start_elevation_m": 158.1265663053586,
   "end_elevation_m": 159.4192425764216,
   "min_gradient_pct": -5.11036628247723,
   "suppressed_max_gradient_pct": 45.430953876743274,
   "suppressed_location_m": [
    87.0,
    90.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 38.68672652124019,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 45.0,
   "end_distance_m": 50.0,
   "start_elevation_m": 157.84092974079056,
   "end_elevation_m": 159.77526606685257,
   "min_gradient_pct": -0.4617313105137555
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 35.24007536013045,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 40.0,
   "end_distance_m": 50.0,
   "start_elevation_m": 156.25125853083952,
   "end_elevation_m": 159.77526606685257,
   "min_gradient_pct": 2.0936156418773066
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 31.794576221369937,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 30.0,
   "end_distance_m": 50.0,
   "start_elevation_m": 153.41635082257858,
   "end_elevation_m": 159.77526606685257,
   "min_gradient_pct": 4.086983237844066
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 30.46121958991671,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 34.0,
   "end_distance_m": 59.0,
   "start_elevation_m": 154.47690882396444,
   "end_elevation_m": 162.0922137214436,
   "min_gradient_pct": 5.136735439155473
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 26.949066111185743,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 11.0,
   "end_distance_m": 61.0,
   "start_elevation_m": 148.98413322332905,
   "end_elevation_m": 162.45866627892192,
   "min_gradient_pct": 7.224214394757894
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 10.93726258716899,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 119.0,
   "end_distance_m": 219.0,
   "start_elevation_m": 170.93229279777592,
   "end_elevation_m": 181.8695553849449,
   "min_gradient_pct": 8.859379512879286,
   "suppressed_max_gradient_pct": 21.760370032998882,
   "suppressed_location_m": [
    6.0,
    106.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.411,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 100.0,
  "shape_class": "sustained"
 },
 "length_m": 219.20537648147484,
 "start_elevation_m": 148.19965744228176,
 "end_elevation_m": 181.9083521008209,
 "endpoint_gain_m": 33.708694658539144,
 "overall_gradient_pct": 15.377676952822315,
 "accumulated_ascent_m": 34.460333581222386,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 38.68672652124019,
   "start_distance_m": 45.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 47.5,
   "start_elevation_m": 157.84092974079056,
   "end_elevation_m": 159.77526606685257,
   "start_xy": [
    610032.6655838939,
    6420195.38293425
   ],
   "end_xy": [
    610030.3163477498,
    6420199.796672976
   ]
  },
  "max_10m": {
   "gradient_pct": 35.24007536013045,
   "start_distance_m": 40.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 45.0,
   "start_elevation_m": 156.25125853083952,
   "end_elevation_m": 159.77526606685257,
   "start_xy": [
    610035.014820038,
    6420190.969195524
   ],
   "end_xy": [
    610030.3163477498,
    6420199.796672976
   ]
  },
  "max_20m": {
   "gradient_pct": 31.794576221369937,
   "start_distance_m": 30.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 40.0,
   "start_elevation_m": 153.41635082257858,
   "end_elevation_m": 159.77526606685257,
   "start_xy": [
    610039.7132923262,
    6420182.141718073
   ],
   "end_xy": [
    610030.3163477498,
    6420199.796672976
   ]
  },
  "max_25m": {
   "gradient_pct": 30.46121958991671,
   "start_distance_m": 34.0,
   "end_distance_m": 59.0,
   "midpoint_distance_m": 46.5,
   "start_elevation_m": 154.47690882396444,
   "end_elevation_m": 162.0922137214436,
   "start_xy": [
    610037.8339034109,
    6420185.672709053
   ],
   "end_xy": [
    610025.1744427157,
    6420207.166534729
   ]
  },
  "max_50m": {
   "gradient_pct": 26.949066111185743,
   "start_distance_m": 11.0,
   "end_distance_m": 61.0,
   "midpoint_distance_m": 36.0,
   "start_elevation_m": 148.98413322332905,
   "end_elevation_m": 162.45866627892192,
   "start_xy": [
    610048.6403896738,
    6420165.369510914
   ],
   "end_xy": [
    610023.9889344615,
    6420208.777301683
   ]
  },
  "max_100m": {
   "gradient_pct": 10.93726258716899,
   "start_distance_m": 119.0,
   "end_distance_m": 219.0,
   "midpoint_distance_m": 169.0,
   "start_elevation_m": 170.93229279777592,
   "end_elevation_m": 181.8695553849449,
   "start_xy": [
    610022.4202891932,
    6420252.741703904
   ],
   "end_xy": [
    610064.1772698466,
    6420330.779659943
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.4617313105137555,
   "start_distance_m": 103.0,
   "end_distance_m": 108.0,
   "midpoint_distance_m": 105.5,
   "start_elevation_m": 169.9577310080977,
   "end_elevation_m": 169.93464444257202,
   "start_xy": [
    610010.9250067497,
    6420241.612531358
   ],
   "end_xy": [
    610014.5172825133,
    6420245.090397779
   ]
  },
  "min_10m": {
   "gradient_pct": 2.0936156418773066,
   "start_distance_m": 98.0,
   "end_distance_m": 108.0,
   "midpoint_distance_m": 103.0,
   "start_elevation_m": 169.7252828783843,
   "end_elevation_m": 169.93464444257202,
   "start_xy": [
    610007.3327309862,
    6420238.134664938
   ],
   "end_xy": [
    610014.5172825133,
    6420245.090397779
   ]
  },
  "min_20m": {
   "gradient_pct": 4.086983237844066,
   "start_distance_m": 153.0,
   "end_distance_m": 173.0,
   "midpoint_distance_m": 163.0,
   "start_elevation_m": 174.5856360759095,
   "end_elevation_m": 175.4030327234783,
   "start_xy": [
    610048.6731553103,
    6420274.284469098
   ],
   "end_xy": [
    610062.2210333713,
    6420288.795678268
   ]
  },
  "min_25m": {
   "gradient_pct": 5.136735439155473,
   "start_distance_m": 153.0,
   "end_distance_m": 178.0,
   "midpoint_distance_m": 165.5,
   "start_elevation_m": 174.5856360759095,
   "end_elevation_m": 175.86981993569836,
   "start_xy": [
    610048.6731553103,
    6420274.284469098
   ],
   "end_xy": [
    610065.2840837996,
    6420292.747604643
   ]
  },
  "min_50m": {
   "gradient_pct": 7.224214394757894,
   "start_distance_m": 96.0,
   "end_distance_m": 146.0,
   "midpoint_distance_m": 121.0,
   "start_elevation_m": 169.6230994276373,
   "end_elevation_m": 173.23520662501625,
   "start_xy": [
    610005.8958206808,
    6420236.74351837
   ],
   "end_xy": [
    610043.1377464741,
    6420269.999699674
   ]
  },
  "min_100m": {
   "gradient_pct": 8.859379512879286,
   "start_distance_m": 95.0,
   "end_distance_m": 195.0,
   "midpoint_distance_m": 145.0,
   "start_elevation_m": 169.50019214399018,
   "end_elevation_m": 178.35957165686946,
   "start_xy": [
    610005.1773655281,
    6420236.047945086
   ],
   "end_xy": [
    610069.8933044969,
    6420308.796923835
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 43.54866353305766,
   "start_distance_m": 42.0,
   "end_distance_m": 44.0,
   "midpoint_distance_m": 43.0,
   "start_elevation_m": 156.81283002665123,
   "end_elevation_m": 157.68380329731238,
   "start_xy": [
    610034.0751255803,
    6420192.7346910145
   ],
   "end_xy": [
    610033.1354311227,
    6420194.500186505
   ]
  },
  "max_3m": {
   "gradient_pct": 43.08920903543291,
   "start_distance_m": 46.0,
   "end_distance_m": 49.0,
   "midpoint_distance_m": 47.5,
   "start_elevation_m": 158.1265663053586,
   "end_elevation_m": 159.4192425764216,
   "start_xy": [
    610032.195736665,
    6420196.265681995
   ],
   "end_xy": [
    610030.7861949786,
    6420198.9139252305
   ]
  }
 },
 "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": 0.027,
   "windows_resited": [
    2.0,
    3.0,
    100.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.71,
   "obstruction_max_height_m": 19.73,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    87.0,
    92.0
   ]
  ],
  "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-mc2",
   "road_pbf": "block-batch-fr-mc2.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_E609-N6420_0m5@22LHD3JN-2025-05-16.tif",
   "data/cache/fr/ign-lidarhd_dtm_E610-N6420_0m5@22LHD3JN-2025-05-16.tif"
  ],
  "calculated_at": "2026-09-22T16:53:42+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc2.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc2",
  "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": [
   "E609-N6420",
   "E610-N6420"
  ],
  "elevation_blocks": [
   "22LHD3JN@2025-05-16"
  ],
  "ign_dalles": [
   "LHD_FXX_0609_6421_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0610_6421_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD3JN"
  ],
  "ign_editions": [
   "2025-05-16"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0609_6421_MNT_O_0M50_LAMB93_IGN69": "2025-05-16",
   "LHD_FXX_0610_6421_MNT_O_0M50_LAMB93_IGN69": "2025-05-16"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 15,
   "stations_resolved": 15,
   "width_median_m": 2.5,
   "width_p10_m": 1.5,
   "width_min_m": 1.0,
   "width_max_m": 12.0,
   "bounded_share": 0.6,
   "unbounded_share": 0.4,
   "confidence_median": 0.519,
   "width_median_bounded_m": 2.5,
   "window_m": [
    34.0,
    59.0
   ],
   "width_at_max25_m": 2.25,
   "window_stations": 7,
   "single_track": true,
   "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": 15,
    "stations_resolved": 15,
    "width_median_m": 2.75,
    "width_p10_m": 1.5,
    "width_min_m": 1.5,
    "width_max_m": 12.0,
    "bounded_share": 0.933,
    "unbounded_share": 0.067,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.75,
    "window_m": [
     34.0,
     59.0
    ],
    "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": "Saint-Jean-Lespinasse",
  "county": "Lot",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}