{
 "ocl_version": "0.1.0",
 "name": "Chemin du Tuco",
 "slug": "chemin-du-tuco-4",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 38.10497566117874,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 161.0,
   "end_distance_m": 163.0,
   "start_elevation_m": 492.50323068789976,
   "end_elevation_m": 493.26533020112333,
   "min_gradient_pct": 0.525558486498312
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 32.25163021973382,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 160.0,
   "end_distance_m": 163.0,
   "start_elevation_m": 492.2977812945313,
   "end_elevation_m": 493.26533020112333,
   "min_gradient_pct": 0.8373123823218975
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 34.1968736169099,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 158.0,
   "end_distance_m": 163.0,
   "start_elevation_m": 491.55548652027784,
   "end_elevation_m": 493.26533020112333,
   "min_gradient_pct": 2.436143842119236
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 28.042215032249942,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 158.0,
   "end_distance_m": 168.0,
   "start_elevation_m": 491.55548652027784,
   "end_elevation_m": 494.35970802350283,
   "min_gradient_pct": 3.2121558683752482
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.44915138644012,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 148.0,
   "end_distance_m": 168.0,
   "start_elevation_m": 489.6698777462148,
   "end_elevation_m": 494.35970802350283,
   "min_gradient_pct": 3.324316386956241
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.93899256798568,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 143.0,
   "end_distance_m": 168.0,
   "start_elevation_m": 488.8749598815064,
   "end_elevation_m": 494.35970802350283,
   "min_gradient_pct": 3.4893299578930055
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.557015240219698,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 129.0,
   "end_distance_m": 179.0,
   "start_elevation_m": 486.7680568158315,
   "end_elevation_m": 496.0465644359414,
   "min_gradient_pct": 4.433717411503949
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 15.710590113220121,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 78.0,
   "end_distance_m": 178.0,
   "start_elevation_m": 480.19312138158693,
   "end_elevation_m": 495.90371149480706,
   "min_gradient_pct": 7.471052885065774
  }
 ],
 "shape": {
  "ascent_concentration": 0.415,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 123.0,
  "shape_class": "sustained"
 },
 "length_m": 205.9863891486527,
 "start_elevation_m": 475.8088186633288,
 "end_elevation_m": 498.93932417381797,
 "endpoint_gain_m": 23.130505510489172,
 "overall_gradient_pct": 11.229142666216044,
 "accumulated_ascent_m": 23.130505510489172,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 34.1968736169099,
   "start_distance_m": 158.0,
   "end_distance_m": 163.0,
   "midpoint_distance_m": 160.5,
   "start_elevation_m": 491.55548652027784,
   "end_elevation_m": 493.26533020112333,
   "start_xy": [
    466554.04934613145,
    6227260.47490114
   ],
   "end_xy": [
    466558.9880398482,
    6227261.25548065
   ]
  },
  "max_10m": {
   "gradient_pct": 28.042215032249942,
   "start_distance_m": 158.0,
   "end_distance_m": 168.0,
   "midpoint_distance_m": 163.0,
   "start_elevation_m": 491.55548652027784,
   "end_elevation_m": 494.35970802350283,
   "start_xy": [
    466554.04934613145,
    6227260.47490114
   ],
   "end_xy": [
    466563.926733565,
    6227262.036060161
   ]
  },
  "max_20m": {
   "gradient_pct": 23.44915138644012,
   "start_distance_m": 148.0,
   "end_distance_m": 168.0,
   "midpoint_distance_m": 158.0,
   "start_elevation_m": 489.6698777462148,
   "end_elevation_m": 494.35970802350283,
   "start_xy": [
    466544.290025918,
    6227258.376659178
   ],
   "end_xy": [
    466563.926733565,
    6227262.036060161
   ]
  },
  "max_25m": {
   "gradient_pct": 21.93899256798568,
   "start_distance_m": 143.0,
   "end_distance_m": 168.0,
   "midpoint_distance_m": 155.5,
   "start_elevation_m": 488.8749598815064,
   "end_elevation_m": 494.35970802350283,
   "start_xy": [
    466539.4792875563,
    6227257.014016005
   ],
   "end_xy": [
    466563.926733565,
    6227262.036060161
   ]
  },
  "max_50m": {
   "gradient_pct": 18.557015240219698,
   "start_distance_m": 129.0,
   "end_distance_m": 179.0,
   "midpoint_distance_m": 154.0,
   "start_elevation_m": 486.7680568158315,
   "end_elevation_m": 496.0465644359414,
   "start_xy": [
    466526.0092201436,
    6227253.198615123
   ],
   "end_xy": [
    466574.79185974185,
    6227263.753335084
   ]
  },
  "max_100m": {
   "gradient_pct": 15.710590113220121,
   "start_distance_m": 78.0,
   "end_distance_m": 178.0,
   "midpoint_distance_m": 128.0,
   "start_elevation_m": 480.19312138158693,
   "end_elevation_m": 495.90371149480706,
   "start_xy": [
    466476.5587474899,
    6227242.297196624
   ],
   "end_xy": [
    466573.8041209985,
    6227263.597219181
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 2.436143842119236,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 475.8088186633288,
   "end_elevation_m": 475.93062585543476,
   "start_xy": [
    466415.501,
    6227200.29
   ],
   "end_xy": [
    466419.50744568085,
    6227203.281386469
   ]
  },
  "min_10m": {
   "gradient_pct": 3.2121558683752482,
   "start_distance_m": 35.0,
   "end_distance_m": 45.0,
   "midpoint_distance_m": 40.0,
   "start_elevation_m": 477.5469258361651,
   "end_elevation_m": 477.8681414230026,
   "start_xy": [
    466439.1977497651,
    6227225.80082421
   ],
   "end_xy": [
    466446.19415007706,
    6227232.945779261
   ]
  },
  "min_20m": {
   "gradient_pct": 3.324316386956241,
   "start_distance_m": 31.0,
   "end_distance_m": 51.0,
   "midpoint_distance_m": 41.0,
   "start_elevation_m": 477.3913357047117,
   "end_elevation_m": 478.05619898210296,
   "start_xy": [
    466436.50825228,
    6227222.849949157
   ],
   "end_xy": [
    466451.3139517031,
    6227236.055823128
   ]
  },
  "min_25m": {
   "gradient_pct": 3.4893299578930055,
   "start_distance_m": 30.0,
   "end_distance_m": 55.0,
   "midpoint_distance_m": 42.5,
   "start_elevation_m": 477.35319245788196,
   "end_elevation_m": 478.2255249473552,
   "start_xy": [
    466435.9141787886,
    6227222.045538386
   ],
   "end_xy": [
    466454.7588472016,
    6227238.088726225
   ]
  },
  "min_50m": {
   "gradient_pct": 4.433717411503949,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 475.8088186633288,
   "end_elevation_m": 478.02567736908077,
   "start_xy": [
    466415.501,
    6227200.29
   ],
   "end_xy": [
    466450.45272782847,
    6227235.547597353
   ]
  },
  "min_100m": {
   "gradient_pct": 7.471052885065774,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 475.8088186633288,
   "end_elevation_m": 483.27987154839457,
   "start_xy": [
    466415.501,
    6227200.29
   ],
   "end_xy": [
    466498.1069376458,
    6227245.295284722
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 38.10497566117874,
   "start_distance_m": 161.0,
   "end_distance_m": 163.0,
   "midpoint_distance_m": 162.0,
   "start_elevation_m": 492.50323068789976,
   "end_elevation_m": 493.26533020112333,
   "start_xy": [
    466557.0125623615,
    6227260.943248847
   ],
   "end_xy": [
    466558.9880398482,
    6227261.25548065
   ]
  },
  "max_3m": {
   "gradient_pct": 32.25163021973382,
   "start_distance_m": 160.0,
   "end_distance_m": 163.0,
   "midpoint_distance_m": 161.5,
   "start_elevation_m": 492.2977812945313,
   "end_elevation_m": 493.26533020112333,
   "start_xy": [
    466556.0248236181,
    6227260.787132944
   ],
   "end_xy": [
    466558.9880398482,
    6227261.25548065
   ]
  }
 },
 "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": 0.372,
   "obstruction_max_height_m": 23.24,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "06fa4c370391597f015858e97dcf01ca2f5b3640",
   "code_git_dirty": "false",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:0048c2bbb24ab95e",
   "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-pyr2",
   "road_pbf": "block-batch-fr-pyr2.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:c54ac68b3f57b41b"
  },
  "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_E466-N6227_0m5@21LHD1GR1-2025-04-03.tif"
  ],
  "calculated_at": "2026-09-20T06:22:04+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pyr2.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pyr2",
  "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": [
   "E466-N6227"
  ],
  "elevation_blocks": [
   "21LHD1GR1@2025-04-03"
  ],
  "ign_dalles": [
   "LHD_FXX_0466_6228_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD1GR1"
  ],
  "ign_editions": [
   "2025-04-03"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0466_6228_MNT_O_0M50_LAMB93_IGN69": "2025-04-03"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 3,
  "carriageway": {
   "stations": 15,
   "stations_resolved": 15,
   "width_median_m": 4.25,
   "width_p10_m": 2.6,
   "width_min_m": 1.75,
   "width_max_m": 12.0,
   "bounded_share": 0.2,
   "unbounded_share": 0.8,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.75,
   "window_m": [
    143.0,
    168.0
   ],
   "width_at_max25_m": 3.0,
   "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": 3.25,
    "width_p10_m": 1.95,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.867,
    "unbounded_share": 0.133,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.25,
    "window_m": [
     143.0,
     168.0
    ],
    "width_at_max25_m": 2.75,
    "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": "Ordizan",
  "county": "Hautes-Pyr\u00e9n\u00e9es",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}