{
 "ocl_version": "0.1.0",
 "name": "Strada di Bellavilla",
 "slug": "strada-di-bellavilla",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.061911965088512,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 124.0,
   "end_distance_m": 126.0,
   "start_elevation_m": 108.85941934967803,
   "end_elevation_m": 109.3606575889798,
   "min_gradient_pct": 0.8534282967190165
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.019867146506652,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 133.0,
   "end_distance_m": 136.0,
   "start_elevation_m": 111.02738646043619,
   "end_elevation_m": 111.77798247483139,
   "min_gradient_pct": 2.2516433623096077
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.609692144794053,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 131.0,
   "end_distance_m": 136.0,
   "start_elevation_m": 110.54749786759169,
   "end_elevation_m": 111.77798247483139,
   "min_gradient_pct": 4.166223474810806
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.18800978040366,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 124.0,
   "end_distance_m": 134.0,
   "start_elevation_m": 108.85941934967803,
   "end_elevation_m": 111.2782203277184,
   "min_gradient_pct": 6.208434843403694
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.380689196796922,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 117.0,
   "end_distance_m": 137.0,
   "start_elevation_m": 107.30034294015003,
   "end_elevation_m": 111.97648077950942,
   "min_gradient_pct": 7.678830563679497
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.495017956803675,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 114.0,
   "end_distance_m": 139.0,
   "start_elevation_m": 106.73683173437756,
   "end_elevation_m": 112.36058622357848,
   "min_gradient_pct": 8.106833409349179
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.252785449166055,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 98.0,
   "end_distance_m": 148.0,
   "start_elevation_m": 104.50643736170885,
   "end_elevation_m": 113.63283008629188,
   "min_gradient_pct": 11.007911673426918
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.101674701658908,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 42.0,
   "end_distance_m": 142.0,
   "start_elevation_m": 97.76548434029758,
   "end_elevation_m": 112.86715904195648,
   "min_gradient_pct": 12.178844692367507
  }
 ],
 "shape": {
  "ascent_concentration": 0.34,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 74.0,
  "shape_class": "sustained"
 },
 "length_m": 215.58516901065948,
 "start_elevation_m": 92.52484188919831,
 "end_elevation_m": 120.77846395111844,
 "endpoint_gain_m": 28.253622061920126,
 "overall_gradient_pct": 13.105549974322743,
 "accumulated_ascent_m": 28.260507349830547,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.609692144794053,
   "start_distance_m": 131.0,
   "end_distance_m": 136.0,
   "midpoint_distance_m": 133.5,
   "start_elevation_m": 110.54749786759169,
   "end_elevation_m": 111.77798247483139,
   "start_xy": [
    1218183.7107184923,
    6065858.454165134
   ],
   "end_xy": [
    1218185.44150716,
    6065853.763283491
   ]
  },
  "max_10m": {
   "gradient_pct": 24.18800978040366,
   "start_distance_m": 124.0,
   "end_distance_m": 134.0,
   "midpoint_distance_m": 129.0,
   "start_elevation_m": 108.85941934967803,
   "end_elevation_m": 111.2782203277184,
   "start_xy": [
    1218180.0718408006,
    6065864.263569876
   ],
   "end_xy": [
    1218184.7491916928,
    6065855.639636148
   ]
  },
  "max_20m": {
   "gradient_pct": 23.380689196796922,
   "start_distance_m": 117.0,
   "end_distance_m": 137.0,
   "midpoint_distance_m": 127.0,
   "start_elevation_m": 107.30034294015003,
   "end_elevation_m": 111.97648077950942,
   "start_xy": [
    1218174.2705883132,
    6065868.019554723
   ],
   "end_xy": [
    1218185.7876648935,
    6065852.825107163
   ]
  },
  "max_25m": {
   "gradient_pct": 22.495017956803675,
   "start_distance_m": 114.0,
   "end_distance_m": 139.0,
   "midpoint_distance_m": 126.5,
   "start_elevation_m": 106.73683173437756,
   "end_elevation_m": 112.36058622357848,
   "start_xy": [
    1218171.425799586,
    6065868.853695566
   ],
   "end_xy": [
    1218186.4799803605,
    6065850.948754505
   ]
  },
  "max_50m": {
   "gradient_pct": 18.252785449166055,
   "start_distance_m": 98.0,
   "end_distance_m": 148.0,
   "midpoint_distance_m": 123.0,
   "start_elevation_m": 104.50643736170885,
   "end_elevation_m": 113.63283008629188,
   "start_xy": [
    1218159.2181811363,
    6065860.036194966
   ],
   "end_xy": [
    1218189.5953999625,
    6065842.505167548
   ]
  },
  "max_100m": {
   "gradient_pct": 15.101674701658908,
   "start_distance_m": 42.0,
   "end_distance_m": 142.0,
   "midpoint_distance_m": 92.0,
   "start_elevation_m": 97.76548434029758,
   "end_elevation_m": 112.86715904195648,
   "start_xy": [
    1218120.4108243505,
    6065822.8626923
   ],
   "end_xy": [
    1218187.5184535612,
    6065848.134225519
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 4.166223474810806,
   "start_distance_m": 209.0,
   "end_distance_m": 214.0,
   "midpoint_distance_m": 211.5,
   "start_elevation_m": 120.42576612527857,
   "end_elevation_m": 120.63407729901911,
   "start_xy": [
    1218219.7083738535,
    6065791.872004853
   ],
   "end_xy": [
    1218221.9183597642,
    6065787.38692266
   ]
  },
  "min_10m": {
   "gradient_pct": 6.208434843403694,
   "start_distance_m": 205.0,
   "end_distance_m": 215.0,
   "midpoint_distance_m": 210.0,
   "start_elevation_m": 120.06371454961365,
   "end_elevation_m": 120.68455803395402,
   "start_xy": [
    1218218.314582011,
    6065795.578097616
   ],
   "end_xy": [
    1218222.3603569462,
    6065786.489906222
   ]
  },
  "min_20m": {
   "gradient_pct": 7.678830563679497,
   "start_distance_m": 195.0,
   "end_distance_m": 215.0,
   "midpoint_distance_m": 205.0,
   "start_elevation_m": 119.14879192121812,
   "end_elevation_m": 120.68455803395402,
   "start_xy": [
    1218216.191690124,
    6065805.284632425
   ],
   "end_xy": [
    1218222.3603569462,
    6065786.489906222
   ]
  },
  "min_25m": {
   "gradient_pct": 8.106833409349179,
   "start_distance_m": 148.0,
   "end_distance_m": 173.0,
   "midpoint_distance_m": 160.5,
   "start_elevation_m": 113.63283008629188,
   "end_elevation_m": 115.65953843862917,
   "start_xy": [
    1218189.5953999625,
    6065842.505167548
   ],
   "end_xy": [
    1218200.3020092696,
    6065820.076955685
   ]
  },
  "min_50m": {
   "gradient_pct": 11.007911673426918,
   "start_distance_m": 165.0,
   "end_distance_m": 215.0,
   "midpoint_distance_m": 190.0,
   "start_elevation_m": 115.18060219724056,
   "end_elevation_m": 120.68455803395402,
   "start_xy": [
    1218196.0225265103,
    6065826.768687273
   ],
   "end_xy": [
    1218222.3603569462,
    6065786.489906222
   ]
  },
  "min_100m": {
   "gradient_pct": 12.178844692367507,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 92.52484188919831,
   "end_elevation_m": 104.70368658156582,
   "start_xy": [
    1218092.131,
    6065850.005
   ],
   "end_xy": [
    1218160.5905048077,
    6065861.491092811
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.061911965088512,
   "start_distance_m": 124.0,
   "end_distance_m": 126.0,
   "midpoint_distance_m": 125.0,
   "start_elevation_m": 108.85941934967803,
   "end_elevation_m": 109.3606575889798,
   "start_xy": [
    1218180.0718408006,
    6065864.263569876
   ],
   "end_xy": [
    1218181.4516021248,
    6065862.815723651
   ]
  },
  "max_3m": {
   "gradient_pct": 25.019867146506652,
   "start_distance_m": 133.0,
   "end_distance_m": 136.0,
   "midpoint_distance_m": 134.5,
   "start_elevation_m": 111.02738646043619,
   "end_elevation_m": 111.77798247483139,
   "start_xy": [
    1218184.4030339592,
    6065856.577812477
   ],
   "end_xy": [
    1218185.44150716,
    6065853.763283491
   ]
  }
 },
 "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": 0.046,
   "obstruction_max_height_m": 4.85,
   "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": "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-co3",
   "road_pbf": "block-batch-fr-co3.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_E1218-N6065_0m5@21LHDCorseVU-2025-04-02.tif"
  ],
  "calculated_at": "2026-09-25T00:48:10+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-co3.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-co3",
  "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": [
   "E1218-N6065"
  ],
  "elevation_blocks": [
   "21LHDCorseVU@2025-04-02"
  ],
  "ign_dalles": [
   "LHD_FXX_1218_6066_MNT_O_0M50_LAMB93_IGN78"
  ],
  "ign_missions": [
   "21LHDCorseVU"
  ],
  "ign_editions": [
   "2025-04-02"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1218_6066_MNT_O_0M50_LAMB93_IGN78": "2025-04-02"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 15,
   "stations_resolved": 15,
   "width_median_m": 7.5,
   "width_p10_m": 5.2,
   "width_min_m": 4.75,
   "width_max_m": 9.5,
   "bounded_share": 0.267,
   "unbounded_share": 0.733,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.62,
   "window_m": [
    114.0,
    139.0
   ],
   "width_at_max25_m": 7.75,
   "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": 15,
    "stations_resolved": 15,
    "width_median_m": 8.25,
    "width_p10_m": 4.35,
    "width_min_m": 1.5,
    "width_max_m": 12.0,
    "bounded_share": 0.6,
    "unbounded_share": 0.4,
    "confidence_median": 1.0,
    "width_median_bounded_m": 7.25,
    "window_m": [
     114.0,
     139.0
    ],
    "width_at_max25_m": 8.25,
    "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": "Sotta",
  "county": "Corse-du-Sud",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}