{
 "ocl_version": "0.1.0",
 "name": "Chemin de Morillon",
 "slug": "chemin-de-morillon",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 39.207394307041454,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 383.0,
   "end_distance_m": 385.0,
   "start_elevation_m": 346.9874653974462,
   "end_elevation_m": 347.77161328358704,
   "min_gradient_pct": 3.1788160160374446
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 38.26665600225473,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 383.0,
   "end_distance_m": 386.0,
   "start_elevation_m": 346.9874653974462,
   "end_elevation_m": 348.13546507751386,
   "min_gradient_pct": 3.692913633905922
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 33.19549855371747,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 382.0,
   "end_distance_m": 387.0,
   "start_elevation_m": 346.7480034256686,
   "end_elevation_m": 348.4077783533545,
   "min_gradient_pct": 3.935238435435622
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.98037266869278,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 379.0,
   "end_distance_m": 389.0,
   "start_elevation_m": 346.14601483870206,
   "end_elevation_m": 348.84405210557134,
   "min_gradient_pct": 4.169118990944867
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.019799217390073,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 367.0,
   "end_distance_m": 387.0,
   "start_elevation_m": 343.4038185098765,
   "end_elevation_m": 348.4077783533545,
   "min_gradient_pct": 4.406857607815198
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.170399559190173,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 364.0,
   "end_distance_m": 389.0,
   "start_elevation_m": 342.8014522157738,
   "end_elevation_m": 348.84405210557134,
   "min_gradient_pct": 4.50025689694121
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.269208604296523,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 363.0,
   "end_distance_m": 413.0,
   "start_elevation_m": 342.60778262464845,
   "end_elevation_m": 353.2423869267967,
   "min_gradient_pct": 4.957317533725359
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.981312672766762,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 311.0,
   "end_distance_m": 411.0,
   "start_elevation_m": 335.00698435630335,
   "end_elevation_m": 352.9882970290701,
   "min_gradient_pct": 5.492207049945648
  }
 ],
 "shape": {
  "ascent_concentration": 0.464,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 142.0,
  "shape_class": "stepped"
 },
 "length_m": 415.53948190845296,
 "start_elevation_m": 313.5310341015586,
 "end_elevation_m": 353.60512646485995,
 "endpoint_gain_m": 40.07409236330136,
 "overall_gradient_pct": 9.643871186259513,
 "accumulated_ascent_m": 40.07409236330136,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 33.19549855371747,
   "start_distance_m": 382.0,
   "end_distance_m": 387.0,
   "midpoint_distance_m": 384.5,
   "start_elevation_m": 346.7480034256686,
   "end_elevation_m": 348.4077783533545,
   "start_xy": [
    879711.6118636401,
    6566238.229862664
   ],
   "end_xy": [
    879716.4166176928,
    6566236.846266446
   ]
  },
  "max_10m": {
   "gradient_pct": 26.98037266869278,
   "start_distance_m": 379.0,
   "end_distance_m": 389.0,
   "midpoint_distance_m": 384.0,
   "start_elevation_m": 346.14601483870206,
   "end_elevation_m": 348.84405210557134,
   "start_xy": [
    879708.7290112085,
    6566239.060020394
   ],
   "end_xy": [
    879718.3787077472,
    6566236.498481675
   ]
  },
  "max_20m": {
   "gradient_pct": 25.019799217390073,
   "start_distance_m": 367.0,
   "end_distance_m": 387.0,
   "midpoint_distance_m": 377.0,
   "start_elevation_m": 343.4038185098765,
   "end_elevation_m": 348.4077783533545,
   "start_xy": [
    879699.3866719328,
    6566246.509019302
   ],
   "end_xy": [
    879716.4166176928,
    6566236.846266446
   ]
  },
  "max_25m": {
   "gradient_pct": 24.170399559190173,
   "start_distance_m": 364.0,
   "end_distance_m": 389.0,
   "midpoint_distance_m": 376.5,
   "start_elevation_m": 342.8014522157738,
   "end_elevation_m": 348.84405210557134,
   "start_xy": [
    879697.3958684494,
    6566248.753278977
   ],
   "end_xy": [
    879718.3787077472,
    6566236.498481675
   ]
  },
  "max_50m": {
   "gradient_pct": 21.269208604296523,
   "start_distance_m": 363.0,
   "end_distance_m": 413.0,
   "midpoint_distance_m": 388.0,
   "start_elevation_m": 342.60778262464845,
   "end_elevation_m": 353.2423869267967,
   "start_xy": [
    879696.7322672883,
    6566249.501365536
   ],
   "end_xy": [
    879742.027003034,
    6566238.241946499
   ]
  },
  "max_100m": {
   "gradient_pct": 17.981312672766762,
   "start_distance_m": 311.0,
   "end_distance_m": 411.0,
   "midpoint_distance_m": 361.0,
   "start_elevation_m": 335.00698435630335,
   "end_elevation_m": 352.9882970290701,
   "start_xy": [
    879666.1810703285,
    6566291.0088156555
   ],
   "end_xy": [
    879740.1226799847,
    6566237.630756084
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 3.935238435435622,
   "start_distance_m": 237.0,
   "end_distance_m": 242.0,
   "midpoint_distance_m": 239.5,
   "start_elevation_m": 328.30765484534595,
   "end_elevation_m": 328.50441676711773,
   "start_xy": [
    879623.634152386,
    6566351.1426464105
   ],
   "end_xy": [
    879626.454614912,
    6566347.014088413
   ]
  },
  "min_10m": {
   "gradient_pct": 4.169118990944867,
   "start_distance_m": 239.0,
   "end_distance_m": 249.0,
   "midpoint_distance_m": 244.0,
   "start_elevation_m": 328.39322109718717,
   "end_elevation_m": 328.81013299628165,
   "start_xy": [
    879624.7623373964,
    6566349.491223211
   ],
   "end_xy": [
    879630.2344104394,
    6566341.127484962
   ]
  },
  "min_20m": {
   "gradient_pct": 4.406857607815198,
   "start_distance_m": 71.0,
   "end_distance_m": 91.0,
   "midpoint_distance_m": 81.0,
   "start_elevation_m": 318.0175145406787,
   "end_elevation_m": 318.89888606224173,
   "start_xy": [
    879536.4031240414,
    6566491.528901785
   ],
   "end_xy": [
    879548.8082308861,
    6566475.8740731655
   ]
  },
  "min_25m": {
   "gradient_pct": 4.50025689694121,
   "start_distance_m": 71.0,
   "end_distance_m": 96.0,
   "midpoint_distance_m": 83.5,
   "start_elevation_m": 318.0175145406787,
   "end_elevation_m": 319.142578764914,
   "start_xy": [
    879536.4031240414,
    6566491.528901785
   ],
   "end_xy": [
    879552.0222982095,
    6566472.043959429
   ]
  },
  "min_50m": {
   "gradient_pct": 4.957317533725359,
   "start_distance_m": 51.0,
   "end_distance_m": 101.0,
   "midpoint_distance_m": 76.0,
   "start_elevation_m": 316.9125040118138,
   "end_elevation_m": 319.39116277867646,
   "start_xy": [
    879525.9656807468,
    6566508.581657602
   ],
   "end_xy": [
    879555.2363655329,
    6566468.213845691
   ]
  },
  "min_100m": {
   "gradient_pct": 5.492207049945648,
   "start_distance_m": 19.0,
   "end_distance_m": 119.0,
   "midpoint_distance_m": 69.0,
   "start_elevation_m": 315.01436584348494,
   "end_elevation_m": 320.5065728934306,
   "start_xy": [
    879511.8490189004,
    6566537.264423523
   ],
   "end_xy": [
    879566.3097536439,
    6566454.037933048
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 39.207394307041454,
   "start_distance_m": 383.0,
   "end_distance_m": 385.0,
   "midpoint_distance_m": 384.0,
   "start_elevation_m": 346.9874653974462,
   "end_elevation_m": 347.77161328358704,
   "start_xy": [
    879712.5728144506,
    6566237.95314342
   ],
   "end_xy": [
    879714.4947160718,
    6566237.399704933
   ]
  },
  "max_3m": {
   "gradient_pct": 38.26665600225473,
   "start_distance_m": 383.0,
   "end_distance_m": 386.0,
   "midpoint_distance_m": 384.5,
   "start_elevation_m": 346.9874653974462,
   "end_elevation_m": 348.13546507751386,
   "start_xy": [
    879712.5728144506,
    6566237.95314342
   ],
   "end_xy": [
    879715.4556668822,
    6566237.12298569
   ]
  }
 },
 "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": 0.185,
   "obstruction_max_height_m": 19.68,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "c4fd6b4a89a9718922c7ed8acdf14e43dcf75a33",
   "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-ju1",
   "road_pbf": "block-batch-fr-ju1.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": "sha256:78945c7930496bfe"
  },
  "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_E879-N6566_0m5@21LHD5OK-2025-05-22.tif"
  ],
  "calculated_at": "2026-09-24T11:24:02+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-ju1.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-ju1",
  "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": [
   "E879-N6566"
  ],
  "elevation_blocks": [
   "21LHD5OK@2025-05-22"
  ],
  "ign_dalles": [
   "LHD_FXX_0879_6567_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD5OK"
  ],
  "ign_editions": [
   "2025-05-22"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0879_6567_MNT_O_0M50_LAMB93_IGN69": "2025-05-22"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 23,
   "stations_resolved": 23,
   "width_median_m": 6.75,
   "width_p10_m": 3.55,
   "width_min_m": 3.25,
   "width_max_m": 12.0,
   "bounded_share": 0.348,
   "unbounded_share": 0.652,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.0,
   "window_m": [
    364.0,
    389.0
   ],
   "width_at_max25_m": 8.25,
   "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": 23,
    "stations_resolved": 23,
    "width_median_m": 4.25,
    "width_p10_m": 2.5,
    "width_min_m": 1.75,
    "width_max_m": 12.0,
    "bounded_share": 0.783,
    "unbounded_share": 0.217,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.62,
    "window_m": [
     364.0,
     389.0
    ],
    "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": "Ceyz\u00e9riat",
  "county": "Ain",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}