{
 "ocl_version": "0.1.0",
 "name": "Chemin de Nissoulogres",
 "slug": "chemin-de-nissoulogres",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.62501470885354,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 67.0,
   "end_distance_m": 69.0,
   "start_elevation_m": 550.2315224480615,
   "end_elevation_m": 550.6840227422385,
   "min_gradient_pct": -6.674060282040273
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.98930048867093,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 194.0,
   "end_distance_m": 197.0,
   "start_elevation_m": 574.5562504186993,
   "end_elevation_m": 575.2159294333594,
   "min_gradient_pct": -4.829016160749688
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.72496438791768,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 188.0,
   "end_distance_m": 193.0,
   "start_elevation_m": 573.2694283101243,
   "end_elevation_m": 574.3556765295202,
   "min_gradient_pct": -4.30062751636342
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.392239921256078,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 188.0,
   "end_distance_m": 198.0,
   "start_elevation_m": 573.2694283101243,
   "end_elevation_m": 575.40865230225,
   "min_gradient_pct": -4.1497188553273645
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.018963904456882,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 185.0,
   "end_distance_m": 205.0,
   "start_elevation_m": 572.6554511991649,
   "end_elevation_m": 576.8592439800562,
   "min_gradient_pct": -3.339571437541622
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.908778596844968,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 182.0,
   "end_distance_m": 207.0,
   "start_elevation_m": 572.0371599699104,
   "end_elevation_m": 577.2643546191216,
   "min_gradient_pct": -2.357689387677965
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.20601327731356,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 157.0,
   "end_distance_m": 207.0,
   "start_elevation_m": 567.1613479804648,
   "end_elevation_m": 577.2643546191216,
   "min_gradient_pct": -0.7918697583602352
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.39639559113914,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 112.0,
   "end_distance_m": 212.0,
   "start_elevation_m": 558.6711169850645,
   "end_elevation_m": 578.0675125762036,
   "min_gradient_pct": 2.6238104242344207
  }
 ],
 "shape": {
  "ascent_concentration": 0.368,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 240.0,
  "shape_class": "sustained"
 },
 "length_m": 345.54810291097573,
 "start_elevation_m": 538.7591533476588,
 "end_elevation_m": 584.322274700684,
 "endpoint_gain_m": 45.56312135302528,
 "overall_gradient_pct": 13.185753580815867,
 "accumulated_ascent_m": 46.50306506591994,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.72496438791768,
   "start_distance_m": 188.0,
   "end_distance_m": 193.0,
   "midpoint_distance_m": 190.5,
   "start_elevation_m": 573.2694283101243,
   "end_elevation_m": 574.3556765295202,
   "start_xy": [
    736727.2793672936,
    6361729.34889484
   ],
   "end_xy": [
    736729.5576601687,
    6361733.799667983
   ]
  },
  "max_10m": {
   "gradient_pct": 21.392239921256078,
   "start_distance_m": 188.0,
   "end_distance_m": 198.0,
   "midpoint_distance_m": 193.0,
   "start_elevation_m": 573.2694283101243,
   "end_elevation_m": 575.40865230225,
   "start_xy": [
    736727.2793672936,
    6361729.34889484
   ],
   "end_xy": [
    736731.853647588,
    6361738.241228236
   ]
  },
  "max_20m": {
   "gradient_pct": 21.018963904456882,
   "start_distance_m": 185.0,
   "end_distance_m": 205.0,
   "midpoint_distance_m": 195.0,
   "start_elevation_m": 572.6554511991649,
   "end_elevation_m": 576.8592439800562,
   "start_xy": [
    736725.9123915685,
    6361726.678430954
   ],
   "end_xy": [
    736734.7757582588,
    6361744.542061297
   ]
  },
  "max_25m": {
   "gradient_pct": 20.908778596844968,
   "start_distance_m": 182.0,
   "end_distance_m": 207.0,
   "midpoint_distance_m": 194.5,
   "start_elevation_m": 572.0371599699104,
   "end_elevation_m": 577.2643546191216,
   "start_xy": [
    736724.5454158435,
    6361724.007967068
   ],
   "end_xy": [
    736735.0542387712,
    6361746.522578553
   ]
  },
  "max_50m": {
   "gradient_pct": 20.20601327731356,
   "start_distance_m": 157.0,
   "end_distance_m": 207.0,
   "midpoint_distance_m": 182.0,
   "start_elevation_m": 567.1613479804648,
   "end_elevation_m": 577.2643546191216,
   "start_xy": [
    736712.9670667535,
    6361701.852645786
   ],
   "end_xy": [
    736735.0542387712,
    6361746.522578553
   ]
  },
  "max_100m": {
   "gradient_pct": 19.39639559113914,
   "start_distance_m": 112.0,
   "end_distance_m": 212.0,
   "midpoint_distance_m": 162.0,
   "start_elevation_m": 558.6711169850645,
   "end_elevation_m": 578.0675125762036,
   "start_xy": [
    736691.7856076361,
    6361662.304114971
   ],
   "end_xy": [
    736735.7504400524,
    6361751.473871696
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -4.30062751636342,
   "start_distance_m": 259.0,
   "end_distance_m": 264.0,
   "midpoint_distance_m": 261.5,
   "start_elevation_m": 581.5777350014927,
   "end_elevation_m": 581.3627036256745,
   "start_xy": [
    736747.2905811517,
    6361724.4752808735
   ],
   "end_xy": [
    736747.4255873336,
    6361719.477103872
   ]
  },
  "min_10m": {
   "gradient_pct": -4.1497188553273645,
   "start_distance_m": 254.0,
   "end_distance_m": 264.0,
   "midpoint_distance_m": 259.0,
   "start_elevation_m": 581.7776755112072,
   "end_elevation_m": 581.3627036256745,
   "start_xy": [
    736747.1555749698,
    6361729.473457874
   ],
   "end_xy": [
    736747.4255873336,
    6361719.477103872
   ]
  },
  "min_20m": {
   "gradient_pct": -3.339571437541622,
   "start_distance_m": 250.0,
   "end_distance_m": 270.0,
   "midpoint_distance_m": 260.0,
   "start_elevation_m": 581.846638773839,
   "end_elevation_m": 581.1787244863307,
   "start_xy": [
    736747.0475700243,
    6361733.471999475
   ],
   "end_xy": [
    736747.587594752,
    6361713.479291472
   ]
  },
  "min_25m": {
   "gradient_pct": -2.357689387677965,
   "start_distance_m": 249.0,
   "end_distance_m": 274.0,
   "midpoint_distance_m": 261.5,
   "start_elevation_m": 581.8828768297145,
   "end_elevation_m": 581.293454482795,
   "start_xy": [
    736747.0205687878,
    6361734.471634875
   ],
   "end_xy": [
    736747.9061734815,
    6361709.498850915
   ]
  },
  "min_50m": {
   "gradient_pct": -0.7918697583602352,
   "start_distance_m": 247.0,
   "end_distance_m": 297.0,
   "midpoint_distance_m": 272.0,
   "start_elevation_m": 581.8475434987793,
   "end_elevation_m": 581.4516086195991,
   "start_xy": [
    736746.966566315,
    6361736.470905675
   ],
   "end_xy": [
    736753.2637630709,
    6361687.408314911
   ]
  },
  "min_100m": {
   "gradient_pct": 2.6238104242344207,
   "start_distance_m": 245.0,
   "end_distance_m": 345.0,
   "midpoint_distance_m": 295.0,
   "start_elevation_m": 581.6732499924013,
   "end_elevation_m": 584.2970604166358,
   "start_xy": [
    736746.9125638424,
    6361738.470176475
   ],
   "end_xy": [
    736775.7818700009,
    6361645.018046449
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.62501470885354,
   "start_distance_m": 67.0,
   "end_distance_m": 69.0,
   "midpoint_distance_m": 68.0,
   "start_elevation_m": 550.2315224480615,
   "end_elevation_m": 550.6840227422385,
   "start_xy": [
    736664.440592506,
    6361627.790972852
   ],
   "end_xy": [
    736665.9228824927,
    6361629.133662837
   ]
  },
  "max_3m": {
   "gradient_pct": 21.98930048867093,
   "start_distance_m": 194.0,
   "end_distance_m": 197.0,
   "midpoint_distance_m": 195.5,
   "start_elevation_m": 574.5562504186993,
   "end_elevation_m": 575.2159294333594,
   "start_xy": [
    736730.0133187437,
    6361734.689822612
   ],
   "end_xy": [
    736731.3856974764,
    6361737.357473353
   ]
  }
 },
 "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": 0.179,
   "obstruction_max_height_m": 13.54,
   "flagged_windows_m": [
    2
   ]
  },
  "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-mc5",
   "road_pbf": "block-batch-fr-mc5.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_E736-N6361_0m5@21LHD4MO-2024-12-13.tif"
  ],
  "calculated_at": "2026-09-22T16:12:43+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc5.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc5",
  "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": [
   "E736-N6361"
  ],
  "elevation_blocks": [
   "21LHD4MO@2024-12-13"
  ],
  "ign_dalles": [
   "LHD_FXX_0736_6362_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD4MO"
  ],
  "ign_editions": [
   "2024-12-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0736_6362_MNT_O_0M50_LAMB93_IGN69": "2024-12-13"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 3,
  "carriageway": {
   "stations": 20,
   "stations_resolved": 20,
   "width_median_m": 3.62,
   "width_p10_m": 2.75,
   "width_min_m": 2.0,
   "width_max_m": 11.5,
   "bounded_share": 0.75,
   "unbounded_share": 0.25,
   "confidence_median": 0.661,
   "width_median_bounded_m": 3.5,
   "window_m": [
    182.0,
    207.0
   ],
   "width_at_max25_m": 3.25,
   "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": 20,
    "stations_resolved": 20,
    "width_median_m": 3.12,
    "width_p10_m": 1.0,
    "width_min_m": 1.0,
    "width_max_m": 12.0,
    "bounded_share": 0.95,
    "unbounded_share": 0.05,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.0,
    "window_m": [
     182.0,
     207.0
    ],
    "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": "Gorges du Tarn Causses",
  "county": "Loz\u00e8re",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}