{
 "ocl_version": "0.1.0",
 "name": "Chemin Bas de la Ramasse",
 "slug": "chemin-bas-de-la-ramasse",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 28.74095710164113,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 88.0,
   "end_distance_m": 90.0,
   "start_elevation_m": 125.40382527715475,
   "end_elevation_m": 125.97864441918757,
   "min_gradient_pct": 5.428331190496749
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 28.08306959417024,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 87.0,
   "end_distance_m": 90.0,
   "start_elevation_m": 125.13615233136247,
   "end_elevation_m": 125.97864441918757,
   "min_gradient_pct": 5.949004945183371
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.549274080970804,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 85.0,
   "end_distance_m": 90.0,
   "start_elevation_m": 124.65118071513903,
   "end_elevation_m": 125.97864441918757,
   "min_gradient_pct": 6.331488599570889
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.424567180294332,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 200.0,
   "end_distance_m": 210.0,
   "start_elevation_m": 137.46549417469495,
   "end_elevation_m": 139.9079508927244,
   "min_gradient_pct": 7.697421518070655
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.73919750633587,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 70.0,
   "end_distance_m": 90.0,
   "start_elevation_m": 121.6308049179204,
   "end_elevation_m": 125.97864441918757,
   "min_gradient_pct": 8.766689898906321
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.702152878175184,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 65.0,
   "end_distance_m": 90.0,
   "start_elevation_m": 120.80310619964378,
   "end_elevation_m": 125.97864441918757,
   "min_gradient_pct": 8.851812386569634
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 15.69500362058102,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 40.0,
   "end_distance_m": 90.0,
   "start_elevation_m": 118.13114260889706,
   "end_elevation_m": 125.97864441918757,
   "min_gradient_pct": 9.71404503845585
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.015179939197608,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "start_elevation_m": 112.77203298310397,
   "end_elevation_m": 126.78721292230158,
   "min_gradient_pct": 10.03379221918577
  }
 ],
 "shape": {
  "ascent_concentration": 0.294,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 52.0,
  "shape_class": "sustained"
 },
 "length_m": 218.60930079264338,
 "start_elevation_m": 112.77203298310397,
 "end_elevation_m": 141.5579238180054,
 "endpoint_gain_m": 28.785890834901437,
 "overall_gradient_pct": 13.167733820349028,
 "accumulated_ascent_m": 28.785890834901437,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.549274080970804,
   "start_distance_m": 85.0,
   "end_distance_m": 90.0,
   "midpoint_distance_m": 87.5,
   "start_elevation_m": 124.65118071513903,
   "end_elevation_m": 125.97864441918757,
   "start_xy": [
    735159.0057792132,
    6280298.124066214
   ],
   "end_xy": [
    735155.019467959,
    6280301.142231648
   ]
  },
  "max_10m": {
   "gradient_pct": 24.424567180294332,
   "start_distance_m": 200.0,
   "end_distance_m": 210.0,
   "midpoint_distance_m": 205.0,
   "start_elevation_m": 137.46549417469495,
   "end_elevation_m": 139.9079508927244,
   "start_xy": [
    735047.8279359274,
    6280284.296340776
   ],
   "end_xy": [
    735038.612906017,
    6280280.473453009
   ]
  },
  "max_20m": {
   "gradient_pct": 21.73919750633587,
   "start_distance_m": 70.0,
   "end_distance_m": 90.0,
   "midpoint_distance_m": 80.0,
   "start_elevation_m": 121.6308049179204,
   "end_elevation_m": 125.97864441918757,
   "start_xy": [
    735170.972216918,
    6280289.079492107
   ],
   "end_xy": [
    735155.019467959,
    6280301.142231648
   ]
  },
  "max_25m": {
   "gradient_pct": 20.702152878175184,
   "start_distance_m": 65.0,
   "end_distance_m": 90.0,
   "midpoint_distance_m": 77.5,
   "start_elevation_m": 120.80310619964378,
   "end_elevation_m": 125.97864441918757,
   "start_xy": [
    735175.0370707924,
    6280286.238915343
   ],
   "end_xy": [
    735155.019467959,
    6280301.142231648
   ]
  },
  "max_50m": {
   "gradient_pct": 15.69500362058102,
   "start_distance_m": 40.0,
   "end_distance_m": 90.0,
   "midpoint_distance_m": 65.0,
   "start_elevation_m": 118.13114260889706,
   "end_elevation_m": 125.97864441918757,
   "start_xy": [
    735199.8694630468,
    6280284.933618865
   ],
   "end_xy": [
    735155.019467959,
    6280301.142231648
   ]
  },
  "max_100m": {
   "gradient_pct": 14.015179939197608,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 112.77203298310397,
   "end_elevation_m": 126.78721292230158,
   "start_xy": [
    735239.859,
    6280285.713
   ],
   "end_xy": [
    735145.2164052519,
    6280299.217918808
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 6.331488599570889,
   "start_distance_m": 92.0,
   "end_distance_m": 97.0,
   "midpoint_distance_m": 94.5,
   "start_elevation_m": 126.20790312757113,
   "end_elevation_m": 126.52447755754967,
   "start_xy": [
    735153.0631785637,
    6280300.7761705825
   ],
   "end_xy": [
    735148.1589452438,
    6280299.802263223
   ]
  },
  "min_10m": {
   "gradient_pct": 7.697421518070655,
   "start_distance_m": 91.0,
   "end_distance_m": 101.0,
   "midpoint_distance_m": 96.0,
   "start_elevation_m": 126.10650865012083,
   "end_elevation_m": 126.8762508019279,
   "start_xy": [
    735154.0440252277,
    6280300.970952054
   ],
   "end_xy": [
    735144.2355585879,
    6280299.023137336
   ]
  },
  "min_20m": {
   "gradient_pct": 8.766689898906321,
   "start_distance_m": 91.0,
   "end_distance_m": 111.0,
   "midpoint_distance_m": 101.0,
   "start_elevation_m": 126.10650865012083,
   "end_elevation_m": 127.8598466299021,
   "start_xy": [
    735154.0440252277,
    6280300.970952054
   ],
   "end_xy": [
    735134.3297863513,
    6280297.752675937
   ]
  },
  "min_25m": {
   "gradient_pct": 8.851812386569634,
   "start_distance_m": 91.0,
   "end_distance_m": 116.0,
   "midpoint_distance_m": 103.5,
   "start_elevation_m": 126.10650865012083,
   "end_elevation_m": 128.31946174676324,
   "start_xy": [
    735154.0440252277,
    6280300.970952054
   ],
   "end_xy": [
    735129.3497201499,
    6280297.306648326
   ]
  },
  "min_50m": {
   "gradient_pct": 9.71404503845585,
   "start_distance_m": 91.0,
   "end_distance_m": 141.0,
   "midpoint_distance_m": 116.0,
   "start_elevation_m": 126.10650865012083,
   "end_elevation_m": 130.96353116934876,
   "start_xy": [
    735154.0440252277,
    6280300.970952054
   ],
   "end_xy": [
    735104.4980190147,
    6280298.0969247
   ]
  },
  "min_100m": {
   "gradient_pct": 10.03379221918577,
   "start_distance_m": 91.0,
   "end_distance_m": 191.0,
   "midpoint_distance_m": 141.0,
   "start_elevation_m": 126.10650865012083,
   "end_elevation_m": 136.1403008693066,
   "start_xy": [
    735154.0440252277,
    6280300.970952054
   ],
   "end_xy": [
    735056.3530783848,
    6280287.181117288
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 28.74095710164113,
   "start_distance_m": 88.0,
   "end_distance_m": 90.0,
   "midpoint_distance_m": 89.0,
   "start_elevation_m": 125.40382527715475,
   "end_elevation_m": 125.97864441918757,
   "start_xy": [
    735156.6139924607,
    6280299.9349654745
   ],
   "end_xy": [
    735155.019467959,
    6280301.142231648
   ]
  },
  "max_3m": {
   "gradient_pct": 28.08306959417024,
   "start_distance_m": 87.0,
   "end_distance_m": 90.0,
   "midpoint_distance_m": 88.5,
   "start_elevation_m": 125.13615233136247,
   "end_elevation_m": 125.97864441918757,
   "start_xy": [
    735157.4112547114,
    6280299.331332387
   ],
   "end_xy": [
    735155.019467959,
    6280301.142231648
   ]
  }
 },
 "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": 0.145,
   "obstruction_max_height_m": 14.8,
   "flagged_windows_m": []
  },
  "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_E735-N6280_0m5@21LHD3LQ-2025-05-19.tif"
  ],
  "calculated_at": "2026-09-22T17:58:05+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": [
   "E735-N6280"
  ],
  "elevation_blocks": [
   "21LHD3LQ@2025-05-19"
  ],
  "ign_dalles": [
   "LHD_FXX_0735_6281_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD3LQ"
  ],
  "ign_editions": [
   "2025-05-19"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0735_6281_MNT_O_0M50_LAMB93_IGN69": "2025-05-19"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 2,
  "carriageway": {
   "stations": 14,
   "stations_resolved": 14,
   "width_median_m": 5.62,
   "width_p10_m": 3.58,
   "width_min_m": 3.25,
   "width_max_m": 12.0,
   "bounded_share": 0.286,
   "unbounded_share": 0.714,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.75,
   "window_m": [
    65.0,
    90.0
   ],
   "width_at_max25_m": 6.25,
   "window_stations": 6,
   "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": 14,
    "stations_resolved": 14,
    "width_median_m": 6.25,
    "width_p10_m": 1.45,
    "width_min_m": 1.0,
    "width_max_m": 12.0,
    "bounded_share": 0.643,
    "unbounded_share": 0.357,
    "confidence_median": 1.0,
    "width_median_bounded_m": 4.0,
    "window_m": [
     65.0,
     90.0
    ],
    "width_at_max25_m": 7.38,
    "window_stations": 6,
    "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": "Clermont-l'H\u00e9rault",
  "county": "H\u00e9rault",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}