{
 "ocl_version": "0.1.0",
 "name": "Chemin de Granval le Haut",
 "slug": "chemin-de-granval-le-haut",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 38.53961366529575,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 17.0,
   "end_distance_m": 19.0,
   "start_elevation_m": 635.5754281937859,
   "end_elevation_m": 636.3462204670918,
   "min_gradient_pct": -14.528845698782789
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 37.04184499378016,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 17.0,
   "end_distance_m": 20.0,
   "start_elevation_m": 635.5754281937859,
   "end_elevation_m": 636.6866835435993,
   "min_gradient_pct": -12.603305220401731
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 34.72427261302073,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 17.0,
   "end_distance_m": 22.0,
   "start_elevation_m": 635.5754281937859,
   "end_elevation_m": 637.311641824437,
   "min_gradient_pct": -10.522172255377882
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 29.717837087143835,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 14.0,
   "end_distance_m": 24.0,
   "start_elevation_m": 634.8995331866183,
   "end_elevation_m": 637.8713168953327,
   "min_gradient_pct": -5.472435742392463
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 25.738784537005017,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 3.0,
   "end_distance_m": 23.0,
   "start_elevation_m": 632.4913082068538,
   "end_elevation_m": 637.6390651142548,
   "min_gradient_pct": 0.6845821106105632
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.33675690520522,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "start_elevation_m": 632.186280266118,
   "end_elevation_m": 638.0204694924194,
   "min_gradient_pct": 1.0768425657374792
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 16.6118362762204,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 143.0,
   "end_distance_m": 193.0,
   "start_elevation_m": 645.2105376917068,
   "end_elevation_m": 653.516455829817,
   "min_gradient_pct": 2.2579188127165253
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.474077435335971,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 114.0,
   "end_distance_m": 214.0,
   "start_elevation_m": 641.9077414274454,
   "end_elevation_m": 656.3818188627814,
   "min_gradient_pct": 4.78505011252571
  }
 ],
 "shape": {
  "ascent_concentration": 0.369,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 96.0,
  "shape_class": "sustained"
 },
 "length_m": 223.74674136573827,
 "start_elevation_m": 632.186280266118,
 "end_elevation_m": 655.7655645654139,
 "endpoint_gain_m": 23.579284299295864,
 "overall_gradient_pct": 10.538381097918638,
 "accumulated_ascent_m": 25.09205760522343,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 34.72427261302073,
   "start_distance_m": 17.0,
   "end_distance_m": 22.0,
   "midpoint_distance_m": 19.5,
   "start_elevation_m": 635.5754281937859,
   "end_elevation_m": 637.311641824437,
   "start_xy": [
    816613.4576666235,
    6523534.242714597
   ],
   "end_xy": [
    816609.9743332774,
    6523537.8296894785
   ]
  },
  "max_10m": {
   "gradient_pct": 29.717837087143835,
   "start_distance_m": 14.0,
   "end_distance_m": 24.0,
   "midpoint_distance_m": 19.0,
   "start_elevation_m": 634.8995331866183,
   "end_elevation_m": 637.8713168953327,
   "start_xy": [
    816615.5476666312,
    6523532.090529668
   ],
   "end_xy": [
    816608.5809999391,
    6523539.264479431
   ]
  },
  "max_20m": {
   "gradient_pct": 25.738784537005017,
   "start_distance_m": 3.0,
   "end_distance_m": 23.0,
   "midpoint_distance_m": 13.0,
   "start_elevation_m": 632.4913082068538,
   "end_elevation_m": 637.6390651142548,
   "start_xy": [
    816623.2109999923,
    6523524.199184929
   ],
   "end_xy": [
    816609.2776666083,
    6523538.547084455
   ]
  },
  "max_25m": {
   "gradient_pct": 23.33675690520522,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 632.186280266118,
   "end_elevation_m": 638.0204694924194,
   "start_xy": [
    816625.301,
    6523522.047
   ],
   "end_xy": [
    816607.8843332699,
    6523539.981874408
   ]
  },
  "max_50m": {
   "gradient_pct": 16.6118362762204,
   "start_distance_m": 143.0,
   "end_distance_m": 193.0,
   "midpoint_distance_m": 168.0,
   "start_elevation_m": 645.2105376917068,
   "end_elevation_m": 653.516455829817,
   "start_xy": [
    816496.8478112138,
    6523527.467362199
   ],
   "end_xy": [
    816453.1028612205,
    6523518.921271212
   ]
  },
  "max_100m": {
   "gradient_pct": 14.474077435335971,
   "start_distance_m": 114.0,
   "end_distance_m": 214.0,
   "midpoint_distance_m": 164.0,
   "start_elevation_m": 641.9077414274454,
   "end_elevation_m": 656.3818188627814,
   "start_xy": [
    816523.0139689945,
    6523539.970636284
   ],
   "end_xy": [
    816441.0157555583,
    6523502.4037903445
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -10.522172255377882,
   "start_distance_m": 217.0,
   "end_distance_m": 222.0,
   "midpoint_distance_m": 219.5,
   "start_elevation_m": 656.1868745184497,
   "end_elevation_m": 655.6607659056808,
   "start_xy": [
    816440.209099633,
    6523499.5142737385
   ],
   "end_xy": [
    816438.8646730909,
    6523494.698412728
   ]
  },
  "min_10m": {
   "gradient_pct": -5.472435742392463,
   "start_distance_m": 213.0,
   "end_distance_m": 223.0,
   "midpoint_distance_m": 218.0,
   "start_elevation_m": 656.2769307801024,
   "end_elevation_m": 655.7296872058631,
   "start_xy": [
    816441.2846408667,
    6523503.3669625465
   ],
   "end_xy": [
    816438.5957877825,
    6523493.735240526
   ]
  },
  "min_20m": {
   "gradient_pct": 0.6845821106105632,
   "start_distance_m": 82.0,
   "end_distance_m": 102.0,
   "midpoint_distance_m": 92.0,
   "start_elevation_m": 641.3188081951496,
   "end_elevation_m": 641.4557246172717,
   "start_xy": [
    816552.7441188566,
    6523550.145862144
   ],
   "end_xy": [
    816533.841450789,
    6523545.144188061
   ]
  },
  "min_25m": {
   "gradient_pct": 1.0768425657374792,
   "start_distance_m": 85.0,
   "end_distance_m": 110.0,
   "midpoint_distance_m": 97.5,
   "start_elevation_m": 641.4075539816065,
   "end_elevation_m": 641.6767646230409,
   "start_xy": [
    816549.7446599759,
    6523550.088884758
   ],
   "end_xy": [
    816526.6231295926,
    6523541.695153543
   ]
  },
  "min_50m": {
   "gradient_pct": 2.2579188127165253,
   "start_distance_m": 61.0,
   "end_distance_m": 111.0,
   "midpoint_distance_m": 86.0,
   "start_elevation_m": 640.5846297160069,
   "end_elevation_m": 641.7135891223652,
   "start_xy": [
    816573.740331022,
    6523550.544703854
   ],
   "end_xy": [
    816525.7208394432,
    6523541.264024229
   ]
  },
  "min_100m": {
   "gradient_pct": 4.78505011252571,
   "start_distance_m": 25.0,
   "end_distance_m": 125.0,
   "midpoint_distance_m": 75.0,
   "start_elevation_m": 638.0204694924194,
   "end_elevation_m": 642.8055196049451,
   "start_xy": [
    816607.8843332699,
    6523539.981874408
   ],
   "end_xy": [
    816513.0887773496,
    6523535.228213822
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 38.53961366529575,
   "start_distance_m": 17.0,
   "end_distance_m": 19.0,
   "midpoint_distance_m": 18.0,
   "start_elevation_m": 635.5754281937859,
   "end_elevation_m": 636.3462204670918,
   "start_xy": [
    816613.4576666235,
    6523534.242714597
   ],
   "end_xy": [
    816612.0643332851,
    6523535.67750455
   ]
  },
  "max_3m": {
   "gradient_pct": 37.04184499378016,
   "start_distance_m": 17.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 18.5,
   "start_elevation_m": 635.5754281937859,
   "end_elevation_m": 636.6866835435993,
   "start_xy": [
    816613.4576666235,
    6523534.242714597
   ],
   "end_xy": [
    816611.3676666159,
    6523536.394899527
   ]
  }
 },
 "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": 0.467,
   "obstruction_max_height_m": 29.66,
   "flagged_windows_m": [
    2,
    10,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "076a8e7f889cfb3c2cf6b3de65a6030c7155b1f0",
   "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-mc8",
   "road_pbf": "block-batch-fr-mc8.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_E816-N6523_0m5@22LHD4NL-2025-08-06.tif"
  ],
  "calculated_at": "2026-09-22T12:01:50+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc8.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc8",
  "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": [
   "E816-N6523"
  ],
  "elevation_blocks": [
   "22LHD4NL@2025-08-06"
  ],
  "ign_dalles": [
   "LHD_FXX_0816_6524_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD4NL"
  ],
  "ign_editions": [
   "2025-08-06"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0816_6524_MNT_O_0M50_LAMB93_IGN69": "2025-08-06"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 13,
   "stations_resolved": 13,
   "width_median_m": 3.0,
   "width_p10_m": 2.05,
   "width_min_m": 2.0,
   "width_max_m": 11.25,
   "bounded_share": 0.231,
   "unbounded_share": 0.769,
   "confidence_median": 0.0,
   "width_median_bounded_m": 2.75,
   "window_m": [
    0.0,
    25.0
   ],
   "width_at_max25_m": 3.12,
   "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": 13,
    "stations_resolved": 13,
    "width_median_m": 2.75,
    "width_p10_m": 0.8,
    "width_min_m": 0.5,
    "width_max_m": 11.75,
    "bounded_share": 0.923,
    "unbounded_share": 0.077,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.5,
    "window_m": [
     0.0,
     25.0
    ],
    "width_at_max25_m": 3.5,
    "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": "Saint-Julien-sur-Bibost",
  "county": "Rh\u00f4ne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}