{
 "ocl_version": "0.1.0",
 "name": "Strada di u Munticellu",
 "slug": "strada-di-u-munticellu",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 34.248234201926664,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1616.0,
   "end_distance_m": 1618.0,
   "start_elevation_m": 133.06628292147713,
   "end_elevation_m": 133.75124760551566,
   "min_gradient_pct": -12.857885101439592
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 30.191647025538753,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1615.0,
   "end_distance_m": 1618.0,
   "start_elevation_m": 132.8454981947495,
   "end_elevation_m": 133.75124760551566,
   "min_gradient_pct": -12.907651283633944
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.297100247760568,
   "diagnostic": false,
   "flags": [
    "suppression_unstable",
    "canopy_or_structure"
   ],
   "start_distance_m": 1614.0,
   "end_distance_m": 1619.0,
   "start_elevation_m": 132.59327052551288,
   "end_elevation_m": 133.8081255379009,
   "min_gradient_pct": -11.910056390654518
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.83453076256569,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1690.0,
   "end_distance_m": 1700.0,
   "start_elevation_m": 143.453515748574,
   "end_elevation_m": 145.63696882483057,
   "min_gradient_pct": -9.96823087054878
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.143241692761734,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1690.0,
   "end_distance_m": 1710.0,
   "start_elevation_m": 143.453515748574,
   "end_elevation_m": 147.68216408712635,
   "min_gradient_pct": -7.3261003206023645
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.99057925143063,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1685.0,
   "end_distance_m": 1710.0,
   "start_elevation_m": 142.4345192742687,
   "end_elevation_m": 147.68216408712635,
   "min_gradient_pct": -6.012708864842921
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.74110342130831,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1677.0,
   "end_distance_m": 1727.0,
   "start_elevation_m": 140.8384740846638,
   "end_elevation_m": 150.70902579531796,
   "min_gradient_pct": -1.0071413383477648
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.897028180020044,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1628.0,
   "end_distance_m": 1728.0,
   "start_elevation_m": 133.97025271432716,
   "end_elevation_m": 150.8672808943472,
   "min_gradient_pct": 2.809129653766781
  }
 ],
 "shape": {
  "ascent_concentration": 0.364,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 63.0,
  "shape_class": "sustained"
 },
 "length_m": 1797.3984518435252,
 "start_elevation_m": 43.4627202285672,
 "end_elevation_m": 153.66072055982465,
 "endpoint_gain_m": 110.19800033125745,
 "overall_gradient_pct": 6.130972251491117,
 "accumulated_ascent_m": 112.35271214057325,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.297100247760568,
   "start_distance_m": 1614.0,
   "end_distance_m": 1619.0,
   "midpoint_distance_m": 1616.5,
   "start_elevation_m": 132.59327052551288,
   "end_elevation_m": 133.8081255379009,
   "start_xy": [
    1188211.150066401,
    6187440.354114219
   ],
   "end_xy": [
    1188216.0433281097,
    6187440.905184463
   ]
  },
  "max_10m": {
   "gradient_pct": 21.83453076256569,
   "start_distance_m": 1690.0,
   "end_distance_m": 1700.0,
   "midpoint_distance_m": 1695.0,
   "start_elevation_m": 143.453515748574,
   "end_elevation_m": 145.63696882483057,
   "start_xy": [
    1188256.4435949533,
    6187423.962305957
   ],
   "end_xy": [
    1188249.8755381817,
    6187416.421707158
   ]
  },
  "max_20m": {
   "gradient_pct": 21.143241692761734,
   "start_distance_m": 1690.0,
   "end_distance_m": 1710.0,
   "midpoint_distance_m": 1700.0,
   "start_elevation_m": 143.453515748574,
   "end_elevation_m": 147.68216408712635,
   "start_xy": [
    1188256.4435949533,
    6187423.962305957
   ],
   "end_xy": [
    1188243.3074814102,
    6187408.881108359
   ]
  },
  "max_25m": {
   "gradient_pct": 20.99057925143063,
   "start_distance_m": 1685.0,
   "end_distance_m": 1710.0,
   "midpoint_distance_m": 1697.5,
   "start_elevation_m": 142.4345192742687,
   "end_elevation_m": 147.68216408712635,
   "start_xy": [
    1188259.727623339,
    6187427.732605357
   ],
   "end_xy": [
    1188243.3074814102,
    6187408.881108359
   ]
  },
  "max_50m": {
   "gradient_pct": 19.74110342130831,
   "start_distance_m": 1677.0,
   "end_distance_m": 1727.0,
   "midpoint_distance_m": 1702.0,
   "start_elevation_m": 140.8384740846638,
   "end_elevation_m": 150.70902579531796,
   "start_xy": [
    1188264.7899016028,
    6187433.879582156
   ],
   "end_xy": [
    1188232.1417848987,
    6187396.062090402
   ]
  },
  "max_100m": {
   "gradient_pct": 16.897028180020044,
   "start_distance_m": 1628.0,
   "end_distance_m": 1728.0,
   "midpoint_distance_m": 1678.0,
   "start_elevation_m": 133.97025271432716,
   "end_elevation_m": 150.8672808943472,
   "start_xy": [
    1188224.8694481705,
    6187442.66575388
   ],
   "end_xy": [
    1188231.4849792216,
    6187395.3080305215
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -11.910056390654518,
   "start_distance_m": 1735.0,
   "end_distance_m": 1740.0,
   "midpoint_distance_m": 1737.5,
   "start_elevation_m": 150.98679966970687,
   "end_elevation_m": 150.39129685017414,
   "start_xy": [
    1188224.6223953008,
    6187394.809327189
   ],
   "end_xy": [
    1188219.6247703435,
    6187394.655233752
   ]
  },
  "min_10m": {
   "gradient_pct": -9.96823087054878,
   "start_distance_m": 1735.0,
   "end_distance_m": 1745.0,
   "midpoint_distance_m": 1740.0,
   "start_elevation_m": 150.98679966970687,
   "end_elevation_m": 149.989976582652,
   "start_xy": [
    1188224.6223953008,
    6187394.809327189
   ],
   "end_xy": [
    1188214.722674134,
    6187393.699588008
   ]
  },
  "min_20m": {
   "gradient_pct": -7.3261003206023645,
   "start_distance_m": 1735.0,
   "end_distance_m": 1755.0,
   "midpoint_distance_m": 1745.0,
   "start_elevation_m": 150.98679966970687,
   "end_elevation_m": 149.5215796055864,
   "start_xy": [
    1188224.6223953008,
    6187394.809327189
   ],
   "end_xy": [
    1188204.9349582077,
    6187391.650047341
   ]
  },
  "min_25m": {
   "gradient_pct": -6.012708864842921,
   "start_distance_m": 1733.0,
   "end_distance_m": 1758.0,
   "midpoint_distance_m": 1745.5,
   "start_elevation_m": 151.07307040175644,
   "end_elevation_m": 149.5698931855457,
   "start_xy": [
    1188226.6214452838,
    6187394.870964563
   ],
   "end_xy": [
    1188202.102340579,
    6187390.723848841
   ]
  },
  "min_50m": {
   "gradient_pct": -1.0071413383477648,
   "start_distance_m": 1728.0,
   "end_distance_m": 1778.0,
   "midpoint_distance_m": 1753.0,
   "start_elevation_m": 150.8672808943472,
   "end_elevation_m": 150.36371022517332,
   "start_xy": [
    1188231.4849792216,
    6187395.3080305215
   ],
   "end_xy": [
    1188184.550562,
    6187381.325457417
   ]
  },
  "min_100m": {
   "gradient_pct": 2.809129653766781,
   "start_distance_m": 1.0,
   "end_distance_m": 101.0,
   "midpoint_distance_m": 51.0,
   "start_elevation_m": 43.527189338279825,
   "end_elevation_m": 46.33631899204661,
   "start_xy": [
    1187923.386905214,
    6188429.829771044
   ],
   "end_xy": [
    1188001.3484817874,
    6188367.295882002
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 34.248234201926664,
   "start_distance_m": 1616.0,
   "end_distance_m": 1618.0,
   "midpoint_distance_m": 1617.0,
   "start_elevation_m": 133.06628292147713,
   "end_elevation_m": 133.75124760551566,
   "start_xy": [
    1188213.1012880895,
    6187440.31832799
   ],
   "end_xy": [
    1188215.062648103,
    6187440.709565639
   ]
  },
  "max_3m": {
   "gradient_pct": 30.191647025538753,
   "start_distance_m": 1615.0,
   "end_distance_m": 1618.0,
   "midpoint_distance_m": 1616.5,
   "start_elevation_m": 132.8454981947495,
   "end_elevation_m": 133.75124760551566,
   "start_xy": [
    1188212.1206080827,
    6187440.122709166
   ],
   "end_xy": [
    1188215.062648103,
    6187440.709565639
   ]
  }
 },
 "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": {
  "texture_windows": {
   "rounds": 0,
   "windows_masked": [],
   "advisory": [],
   "unresolved": [],
   "unstable": [
    {
     "window_m": 5.0,
     "start_m": 1614.0,
     "end_m": 1619.0,
     "raw_pct": 24.3,
     "reason": "short-step",
     "perturbations": [
      "phase+0.000/mask+0",
      "phase+0.333/mask+1",
      "phase+0.667/mask-1"
     ],
     "perturbation_reasons": [
      "short-step",
      "",
      ""
     ]
    }
   ]
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.017,
   "obstruction_max_height_m": 9.5,
   "flagged_windows_m": [
    2,
    3,
    5.0
   ]
  },
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "33abfff569d4360542e616d0d42c1b94d0a711fa",
   "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-co2",
   "road_pbf": "block-batch-fr-co2.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": "sha256:2a717d675f2607cc"
  },
  "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_E1187-N6187_0m5@21LHDCorseUS-2025-04-02.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1187-N6188_0m5@21LHDCorseUS-2025-04-02.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1188-N6187_0m5@21LHDCorseUS-2025-04-02.tif",
   "data/cache/fr/ign-lidarhd_dtm_E1188-N6188_0m5@21LHDCorseUS-2025-04-02.tif"
  ],
  "calculated_at": "2026-09-25T00:41:41+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-co2.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-co2",
  "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": [
   "E1187-N6187",
   "E1187-N6188",
   "E1188-N6187",
   "E1188-N6188"
  ],
  "elevation_blocks": [
   "21LHDCorseUS@2025-04-02"
  ],
  "ign_dalles": [
   "LHD_FXX_1187_6188_MNT_O_0M50_LAMB93_IGN78",
   "LHD_FXX_1187_6189_MNT_O_0M50_LAMB93_IGN78",
   "LHD_FXX_1188_6188_MNT_O_0M50_LAMB93_IGN78",
   "LHD_FXX_1188_6189_MNT_O_0M50_LAMB93_IGN78"
  ],
  "ign_missions": [
   "21LHDCorseUS"
  ],
  "ign_editions": [
   "2025-04-02"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1187_6188_MNT_O_0M50_LAMB93_IGN78": "2025-04-02",
   "LHD_FXX_1187_6189_MNT_O_0M50_LAMB93_IGN78": "2025-04-02",
   "LHD_FXX_1188_6188_MNT_O_0M50_LAMB93_IGN78": "2025-04-02",
   "LHD_FXX_1188_6189_MNT_O_0M50_LAMB93_IGN78": "2025-04-02"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 5,
  "suppression_unstable": [
   5.0
  ],
  "carriageway": {
   "stations": 77,
   "stations_resolved": 77,
   "width_median_m": 7.5,
   "width_p10_m": 5.0,
   "width_min_m": 1.25,
   "width_max_m": 10.75,
   "bounded_share": 0.403,
   "unbounded_share": 0.597,
   "confidence_median": 0.0,
   "width_median_bounded_m": 7.0,
   "window_m": [
    1685.0,
    1710.0
   ],
   "width_at_max25_m": 4.88,
   "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": 77,
    "stations_resolved": 77,
    "width_median_m": 7.5,
    "width_p10_m": 4.65,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.675,
    "unbounded_share": 0.325,
    "confidence_median": 1.0,
    "width_median_bounded_m": 6.75,
    "window_m": [
     1685.0,
     1710.0
    ],
    "width_at_max25_m": 6.0,
    "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": "L'\u00cele-Rousse",
  "county": "Haute-Corse",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}