{
 "ocl_version": "0.1.0",
 "name": "Chemin de Rullet",
 "slug": "chemin-de-rullet",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.644254847395985,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 430.0,
   "end_distance_m": 432.0,
   "start_elevation_m": 99.0399675818254,
   "end_elevation_m": 99.51285267877331,
   "min_gradient_pct": -7.312200388010126
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.251820191045642,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 429.0,
   "end_distance_m": 432.0,
   "start_elevation_m": 98.81529807304194,
   "end_elevation_m": 99.51285267877331,
   "min_gradient_pct": -6.944141923519946
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.243182796917665,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 427.0,
   "end_distance_m": 432.0,
   "start_elevation_m": 98.35069353892743,
   "end_elevation_m": 99.51285267877331,
   "min_gradient_pct": -6.273469358763464
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.787309787429706,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 422.0,
   "end_distance_m": 432.0,
   "start_elevation_m": 97.23412170003034,
   "end_elevation_m": 99.51285267877331,
   "min_gradient_pct": -5.692793416525319
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.62411595167336,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 415.0,
   "end_distance_m": 435.0,
   "start_elevation_m": 95.64828133896584,
   "end_elevation_m": 100.17310452930052,
   "min_gradient_pct": -5.262688332837726
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.48565853022467,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 415.0,
   "end_distance_m": 440.0,
   "start_elevation_m": 95.64828133896584,
   "end_elevation_m": 101.26969597152201,
   "min_gradient_pct": -5.189659181671004
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.803873441779107,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 405.0,
   "end_distance_m": 455.0,
   "start_elevation_m": 93.4949584725965,
   "end_elevation_m": 104.39689519348605,
   "min_gradient_pct": -4.8032944091249306
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.837206957966302,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 380.0,
   "end_distance_m": 480.0,
   "start_elevation_m": 88.84130719898147,
   "end_elevation_m": 109.67851415694777,
   "min_gradient_pct": -3.695208555912018
  }
 ],
 "shape": {
  "ascent_concentration": 0.596,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 136.0,
  "shape_class": "stepped"
 },
 "length_m": 644.5699128501249,
 "start_elevation_m": 80.80551674738481,
 "end_elevation_m": 120.33982607412645,
 "endpoint_gain_m": 39.534309326741635,
 "overall_gradient_pct": 6.133440071990164,
 "accumulated_ascent_m": 45.49090481902333,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.243182796917665,
   "start_distance_m": 427.0,
   "end_distance_m": 432.0,
   "midpoint_distance_m": 429.5,
   "start_elevation_m": 98.35069353892743,
   "end_elevation_m": 99.51285267877331,
   "start_xy": [
    548009.7047050906,
    6337553.780537392
   ],
   "end_xy": [
    548005.1155345873,
    6337555.765358314
   ]
  },
  "max_10m": {
   "gradient_pct": 22.787309787429706,
   "start_distance_m": 422.0,
   "end_distance_m": 432.0,
   "midpoint_distance_m": 427.0,
   "start_elevation_m": 97.23412170003034,
   "end_elevation_m": 99.51285267877331,
   "start_xy": [
    548014.2938755938,
    6337551.795716469
   ],
   "end_xy": [
    548005.1155345873,
    6337555.765358314
   ]
  },
  "max_20m": {
   "gradient_pct": 22.62411595167336,
   "start_distance_m": 415.0,
   "end_distance_m": 435.0,
   "midpoint_distance_m": 425.0,
   "start_elevation_m": 95.64828133896584,
   "end_elevation_m": 100.17310452930052,
   "start_xy": [
    548020.7187142983,
    6337549.016967178
   ],
   "end_xy": [
    548002.3616058775,
    6337556.95526437
   ]
  },
  "max_25m": {
   "gradient_pct": 22.48565853022467,
   "start_distance_m": 415.0,
   "end_distance_m": 440.0,
   "midpoint_distance_m": 427.5,
   "start_elevation_m": 95.64828133896584,
   "end_elevation_m": 101.26969597152201,
   "start_xy": [
    548020.7187142983,
    6337549.016967178
   ],
   "end_xy": [
    547997.7715789689,
    6337558.938103995
   ]
  },
  "max_50m": {
   "gradient_pct": 21.803873441779107,
   "start_distance_m": 405.0,
   "end_distance_m": 455.0,
   "midpoint_distance_m": 430.0,
   "start_elevation_m": 93.4949584725965,
   "end_elevation_m": 104.39689519348605,
   "start_xy": [
    548030.0774192598,
    6337545.578727802
   ],
   "end_xy": [
    547984.0014982428,
    6337564.886622869
   ]
  },
  "max_100m": {
   "gradient_pct": 20.837206957966302,
   "start_distance_m": 380.0,
   "end_distance_m": 480.0,
   "midpoint_distance_m": 430.0,
   "start_elevation_m": 88.84130719898147,
   "end_elevation_m": 109.67851415694777,
   "start_xy": [
    548054.4158063605,
    6337539.909645641
   ],
   "end_xy": [
    547961.0513636996,
    6337574.800820994
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -6.273469358763464,
   "start_distance_m": 625.0,
   "end_distance_m": 630.0,
   "midpoint_distance_m": 627.5,
   "start_elevation_m": 121.0066937522798,
   "end_elevation_m": 120.69302028434163,
   "start_xy": [
    547836.5217529244,
    6337581.863684585
   ],
   "end_xy": [
    547833.3922671116,
    6337577.964156595
   ]
  },
  "min_10m": {
   "gradient_pct": -5.692793416525319,
   "start_distance_m": 624.0,
   "end_distance_m": 634.0,
   "midpoint_distance_m": 629.0,
   "start_elevation_m": 121.06712244113803,
   "end_elevation_m": 120.4978430994855,
   "start_xy": [
    547837.1476500869,
    6337582.643590184
   ],
   "end_xy": [
    547830.8886784614,
    6337574.8445342025
   ]
  },
  "min_20m": {
   "gradient_pct": -5.262688332837726,
   "start_distance_m": 120.0,
   "end_distance_m": 140.0,
   "midpoint_distance_m": 130.0,
   "start_elevation_m": 85.40432755631745,
   "end_elevation_m": 84.35178988974991,
   "start_xy": [
    548232.4001706732,
    6337354.567149853
   ],
   "end_xy": [
    548219.8610954209,
    6337370.148279203
   ]
  },
  "min_25m": {
   "gradient_pct": -5.189659181671004,
   "start_distance_m": 116.0,
   "end_distance_m": 141.0,
   "midpoint_distance_m": 128.5,
   "start_elevation_m": 85.60248348682316,
   "end_elevation_m": 84.30506869140541,
   "start_xy": [
    548234.9079857236,
    6337351.450923984
   ],
   "end_xy": [
    548219.2341416583,
    6337370.927335671
   ]
  },
  "min_50m": {
   "gradient_pct": -4.8032944091249306,
   "start_distance_m": 101.0,
   "end_distance_m": 151.0,
   "midpoint_distance_m": 126.0,
   "start_elevation_m": 86.25287444862806,
   "end_elevation_m": 83.8512272440656,
   "start_xy": [
    548244.3647661736,
    6337339.808486143
   ],
   "end_xy": [
    548212.9646040321,
    6337378.717900346
   ]
  },
  "min_100m": {
   "gradient_pct": -3.695208555912018,
   "start_distance_m": 78.0,
   "end_distance_m": 178.0,
   "midpoint_distance_m": 128.0,
   "start_elevation_m": 86.88467252852372,
   "end_elevation_m": 83.1894639726117,
   "start_xy": [
    548259.2632176424,
    6337322.286039286
   ],
   "end_xy": [
    548194.0700389133,
    6337397.8530282695
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.644254847395985,
   "start_distance_m": 430.0,
   "end_distance_m": 432.0,
   "midpoint_distance_m": 431.0,
   "start_elevation_m": 99.0399675818254,
   "end_elevation_m": 99.51285267877331,
   "start_xy": [
    548006.9512027886,
    6337554.971429945
   ],
   "end_xy": [
    548005.1155345873,
    6337555.765358314
   ]
  },
  "max_3m": {
   "gradient_pct": 23.251820191045642,
   "start_distance_m": 429.0,
   "end_distance_m": 432.0,
   "midpoint_distance_m": 430.5,
   "start_elevation_m": 98.81529807304194,
   "end_elevation_m": 99.51285267877331,
   "start_xy": [
    548007.8690368893,
    6337554.57446576
   ],
   "end_xy": [
    548005.1155345873,
    6337555.765358314
   ]
  }
 },
 "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": 0.17,
   "obstruction_max_height_m": 17.23,
   "flagged_windows_m": [
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier",
   "descends_at_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "16bcc1553fe58b280e0c4a66a3ab0980530490a6",
   "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-so7",
   "road_pbf": "block-batch-fr-so7.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": "sha256:18f786cf9fa98070"
  },
  "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_E547-N6337_0m5@21LHD2IO-2025-04-02.tif",
   "data/cache/fr/ign-lidarhd_dtm_E548-N6337_0m5@21LHD2IO-2025-04-02.tif"
  ],
  "calculated_at": "2026-09-27T04:01:05+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-so7.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-so7",
  "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": [
   "E547-N6337",
   "E548-N6337"
  ],
  "elevation_blocks": [
   "21LHD2IO@2025-04-02"
  ],
  "ign_dalles": [
   "LHD_FXX_0547_6338_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0548_6338_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD2IO"
  ],
  "ign_editions": [
   "2025-04-02"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0547_6338_MNT_O_0M50_LAMB93_IGN69": "2025-04-02",
   "LHD_FXX_0548_6338_MNT_O_0M50_LAMB93_IGN69": "2025-04-02"
  },
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": "none \u2014 the route carried no way list and no mapped way runs along it; own decks unmasked",
  "carriageway": {
   "stations": 31,
   "stations_resolved": 31,
   "width_median_m": 5.5,
   "width_p10_m": 4.75,
   "width_min_m": 3.5,
   "width_max_m": 10.25,
   "bounded_share": 0.161,
   "unbounded_share": 0.839,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.5,
   "window_m": [
    415.0,
    440.0
   ],
   "width_at_max25_m": 6.88,
   "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": 31,
    "stations_resolved": 31,
    "width_median_m": 6.75,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 11.0,
    "bounded_share": 0.677,
    "unbounded_share": 0.323,
    "confidence_median": 1.0,
    "width_median_bounded_m": 5.0,
    "window_m": [
     415.0,
     440.0
    ],
    "width_at_max25_m": 8.12,
    "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": "Moissac",
  "county": "Tarn-et-Garonne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}