{
 "ocl_version": "0.1.0",
 "name": "Chemin du Seyran",
 "slug": "chemin-du-seyran",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 42.45002025233191,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1907.0,
   "end_distance_m": 1909.0,
   "start_elevation_m": 342.4891447597781,
   "end_elevation_m": 343.33814516482477,
   "min_gradient_pct": -40.436766822261916,
   "suppressed_max_gradient_pct": 102.1399884118452,
   "suppressed_location_m": [
    603.0,
    605.0
   ],
   "suppressed_min_gradient_pct": -68.30770812574087,
   "suppressed_min_location_m": [
    1227.0,
    1229.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 36.32777540392832,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1906.0,
   "end_distance_m": 1909.0,
   "start_elevation_m": 342.2483119027069,
   "end_elevation_m": 343.33814516482477,
   "min_gradient_pct": -34.44313257964874,
   "suppressed_max_gradient_pct": 77.52717822648758,
   "suppressed_location_m": [
    602.0,
    605.0
   ],
   "suppressed_min_gradient_pct": -54.89817890920108,
   "suppressed_min_location_m": [
    1226.0,
    1229.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 29.66167932396729,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1595.0,
   "end_distance_m": 1600.0,
   "start_elevation_m": 319.51809894553355,
   "end_elevation_m": 321.0011829117319,
   "min_gradient_pct": -24.0997588505644,
   "suppressed_max_gradient_pct": 58.643948608037135,
   "suppressed_location_m": [
    602.0,
    607.0
   ],
   "suppressed_min_gradient_pct": -38.932495312600395,
   "suppressed_min_location_m": [
    1226.0,
    1231.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 27.561588148731744,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1594.0,
   "end_distance_m": 1604.0,
   "start_elevation_m": 319.32214981749894,
   "end_elevation_m": 322.0783086323721,
   "min_gradient_pct": -17.588442074529098,
   "suppressed_max_gradient_pct": 35.03769190647034,
   "suppressed_location_m": [
    597.0,
    607.0
   ],
   "suppressed_min_gradient_pct": -19.48736186772635,
   "suppressed_min_location_m": [
    1225.0,
    1235.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.002729986196186,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1590.0,
   "end_distance_m": 1610.0,
   "start_elevation_m": 318.5716225819638,
   "end_elevation_m": 323.17216857920306,
   "min_gradient_pct": -10.3619918049597,
   "suppressed_max_gradient_pct": 25.296111695058983,
   "suppressed_location_m": [
    1084.0,
    1104.0
   ],
   "suppressed_min_gradient_pct": -18.026955955711514,
   "suppressed_min_location_m": [
    1210.0,
    1230.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.38199325841083,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1593.0,
   "end_distance_m": 1618.0,
   "start_elevation_m": 319.08654830294967,
   "end_elevation_m": 324.4320466175524,
   "min_gradient_pct": -8.680181867938472,
   "suppressed_max_gradient_pct": 23.79096653868328,
   "suppressed_location_m": [
    1084.0,
    1109.0
   ],
   "suppressed_min_gradient_pct": -15.356619301143155,
   "suppressed_min_location_m": [
    1206.0,
    1231.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.52114356355105,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min",
    "no_bench_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1589.0,
   "end_distance_m": 1639.0,
   "start_elevation_m": 318.3957916413291,
   "end_elevation_m": 327.1563634231046,
   "min_gradient_pct": -6.3980120264556035,
   "suppressed_max_gradient_pct": 18.99851911681492,
   "suppressed_location_m": [
    1060.0,
    1110.0
   ],
   "suppressed_min_gradient_pct": -10.161129242242737,
   "suppressed_min_location_m": [
    1181.0,
    1231.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.397950677674089,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 1574.0,
   "end_distance_m": 1674.0,
   "start_elevation_m": 316.95332701217205,
   "end_elevation_m": 331.35127768984614,
   "min_gradient_pct": -3.4898633984983576,
   "suppressed_min_gradient_pct": -4.2673640184962665,
   "suppressed_min_location_m": [
    1131.0,
    1231.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.435,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 154.0,
  "shape_class": "sustained"
 },
 "length_m": 3187.7496891234073,
 "start_elevation_m": 185.02602888183836,
 "end_elevation_m": 359.96046005251617,
 "endpoint_gain_m": 174.9344311706778,
 "overall_gradient_pct": 5.4877091437747945,
 "accumulated_ascent_m": 216.0143355991169,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 29.66167932396729,
   "start_distance_m": 1595.0,
   "end_distance_m": 1600.0,
   "midpoint_distance_m": 1597.5,
   "start_elevation_m": 319.51809894553355,
   "end_elevation_m": 321.0011829117319,
   "start_xy": [
    976854.3072738989,
    6277880.02852551
   ],
   "end_xy": [
    976851.1164818845,
    6277883.878050976
   ]
  },
  "max_10m": {
   "gradient_pct": 27.561588148731744,
   "start_distance_m": 1594.0,
   "end_distance_m": 1604.0,
   "midpoint_distance_m": 1599.0,
   "start_elevation_m": 319.32214981749894,
   "end_elevation_m": 322.0783086323721,
   "start_xy": [
    976854.9454323016,
    6277879.258620417
   ],
   "end_xy": [
    976848.5638482731,
    6277886.957671351
   ]
  },
  "max_20m": {
   "gradient_pct": 23.002729986196186,
   "start_distance_m": 1590.0,
   "end_distance_m": 1610.0,
   "midpoint_distance_m": 1600.0,
   "start_elevation_m": 318.5716225819638,
   "end_elevation_m": 323.17216857920306,
   "start_xy": [
    976857.4980659131,
    6277876.179000042
   ],
   "end_xy": [
    976844.734897856,
    6277891.577101911
   ]
  },
  "max_25m": {
   "gradient_pct": 21.38199325841083,
   "start_distance_m": 1593.0,
   "end_distance_m": 1618.0,
   "midpoint_distance_m": 1605.5,
   "start_elevation_m": 319.08654830294967,
   "end_elevation_m": 324.4320466175524,
   "start_xy": [
    976855.5835907045,
    6277878.488715323
   ],
   "end_xy": [
    976839.4633645783,
    6277897.593235554
   ]
  },
  "max_50m": {
   "gradient_pct": 17.52114356355105,
   "start_distance_m": 1589.0,
   "end_distance_m": 1639.0,
   "midpoint_distance_m": 1614.0,
   "start_elevation_m": 318.3957916413291,
   "end_elevation_m": 327.1563634231046,
   "start_xy": [
    976858.136224316,
    6277875.409094949
   ],
   "end_xy": [
    976825.4707516853,
    6277913.2523154905
   ]
  },
  "max_100m": {
   "gradient_pct": 14.397950677674089,
   "start_distance_m": 1574.0,
   "end_distance_m": 1674.0,
   "midpoint_distance_m": 1624.0,
   "start_elevation_m": 316.95332701217205,
   "end_elevation_m": 331.35127768984614,
   "start_xy": [
    976867.7086003587,
    6277863.860518548
   ],
   "end_xy": [
    976802.1497301972,
    6277939.35078205
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -24.0997588505644,
   "start_distance_m": 649.0,
   "end_distance_m": 654.0,
   "midpoint_distance_m": 651.5,
   "start_elevation_m": 240.0053332134311,
   "end_elevation_m": 238.80034527090288,
   "start_xy": [
    977325.6801846423,
    6277360.360419332
   ],
   "end_xy": [
    977323.8316610068,
    6277365.006165813
   ]
  },
  "min_10m": {
   "gradient_pct": -17.588442074529098,
   "start_distance_m": 649.0,
   "end_distance_m": 659.0,
   "midpoint_distance_m": 654.0,
   "start_elevation_m": 240.0053332134311,
   "end_elevation_m": 238.2464890059782,
   "start_xy": [
    977325.6801846423,
    6277360.360419332
   ],
   "end_xy": [
    977321.9831373713,
    6277369.651912294
   ]
  },
  "min_20m": {
   "gradient_pct": -10.3619918049597,
   "start_distance_m": 2525.0,
   "end_distance_m": 2545.0,
   "midpoint_distance_m": 2535.0,
   "start_elevation_m": 354.8674652488102,
   "end_elevation_m": 352.7950668878183,
   "start_xy": [
    976195.5629250726,
    6278529.206812135
   ],
   "end_xy": [
    976177.7600349901,
    6278538.320379203
   ]
  },
  "min_25m": {
   "gradient_pct": -8.680181867938472,
   "start_distance_m": 2525.0,
   "end_distance_m": 2550.0,
   "midpoint_distance_m": 2537.5,
   "start_elevation_m": 354.8674652488102,
   "end_elevation_m": 352.6974197818256,
   "start_xy": [
    976195.5629250726,
    6278529.206812135
   ],
   "end_xy": [
    976173.3093124694,
    6278540.5987709705
   ]
  },
  "min_50m": {
   "gradient_pct": -6.3980120264556035,
   "start_distance_m": 2821.0,
   "end_distance_m": 2871.0,
   "midpoint_distance_m": 2846.0,
   "start_elevation_m": 363.702080882656,
   "end_elevation_m": 360.5030748694282,
   "start_xy": [
    975928.4308404329,
    6278644.288564908
   ],
   "end_xy": [
    975896.0025078229,
    6278681.788628882
   ]
  },
  "min_100m": {
   "gradient_pct": -3.4898633984983576,
   "start_distance_m": 2775.0,
   "end_distance_m": 2875.0,
   "midpoint_distance_m": 2825.0,
   "start_elevation_m": 363.9115175254273,
   "end_elevation_m": 360.42165412692896,
   "start_xy": [
    975963.9857258494,
    6278615.102093332
   ],
   "end_xy": [
    975893.6993521526,
    6278685.05902243
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 42.45002025233191,
   "start_distance_m": 1907.0,
   "end_distance_m": 1909.0,
   "midpoint_distance_m": 1908.0,
   "start_elevation_m": 342.4891447597781,
   "end_elevation_m": 343.33814516482477,
   "start_xy": [
    976646.8983585754,
    6278113.092002287
   ],
   "end_xy": [
    976645.5657287762,
    6278114.583343233
   ]
  },
  "max_3m": {
   "gradient_pct": 36.32777540392832,
   "start_distance_m": 1906.0,
   "end_distance_m": 1909.0,
   "midpoint_distance_m": 1907.5,
   "start_elevation_m": 342.2483119027069,
   "end_elevation_m": 343.33814516482477,
   "start_xy": [
    976647.5646734751,
    6278112.346331813
   ],
   "end_xy": [
    976645.5657287762,
    6278114.583343233
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.014,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "minima_unresolved": []
  },
  "no_bench_suppression": {
   "masked_fraction": 0.039,
   "windows_resited": [
    50.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.051,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 2,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 1084.0,
     "end_m": 1109.0,
     "raw_pct": 23.79,
     "reason": "hump+mask-edge"
    },
    {
     "window_m": 20.0,
     "start_m": 1084.0,
     "end_m": 1104.0,
     "raw_pct": 25.3,
     "reason": "hump"
    },
    {
     "window_m": 10.0,
     "start_m": 1097.0,
     "end_m": 1107.0,
     "raw_pct": 28.68,
     "reason": "hump+mask-edge"
    },
    {
     "window_m": 5.0,
     "start_m": 1097.0,
     "end_m": 1102.0,
     "raw_pct": 40.99,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 1250.0,
     "end_m": 1255.0,
     "raw_pct": 30.49,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.468,
   "obstruction_max_height_m": 24.96,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    329.0,
    335.0
   ],
   [
    601.0,
    607.0
   ],
   [
    839.0,
    844.0
   ],
   [
    900.0,
    930.0
   ],
   [
    1082.0,
    1140.0
   ],
   [
    1200.0,
    1230.0
   ],
   [
    1248.0,
    1257.0
   ],
   [
    1880.0,
    1885.0
   ],
   [
    2876.0,
    2881.0
   ]
  ],
  "review": [],
  "extent": []
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "41205ec4649bb0a4093af76ff34281a5d9a13832",
   "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-pr7",
   "road_pbf": "block-batch-fr-pr7.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:ba95a0bf562c86eb"
  },
  "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_E975-N6278_0m5@22LHD6QQ-2025-03-24.tif",
   "data/cache/fr/ign-lidarhd_dtm_E976-N6277_0m5@22LHD6QQ-2025-03-24.tif",
   "data/cache/fr/ign-lidarhd_dtm_E976-N6278_0m5@22LHD6QQ-2025-03-24.tif",
   "data/cache/fr/ign-lidarhd_dtm_E977-N6277_0m5@22LHD6QQ-2025-03-24.tif",
   "data/cache/fr/ign-lidarhd_dtm_E977-N6278_0m5@22LHD6QQ-2025-03-24.tif"
  ],
  "calculated_at": "2026-09-25T09:03:26+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pr7.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pr7",
  "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": [
   "E975-N6278",
   "E976-N6277",
   "E976-N6278",
   "E977-N6277",
   "E977-N6278"
  ],
  "elevation_blocks": [
   "22LHD6QQ@2025-03-24"
  ],
  "ign_dalles": [
   "LHD_FXX_0975_6279_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0976_6278_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0976_6279_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0977_6278_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0977_6279_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD6QQ"
  ],
  "ign_editions": [
   "2025-03-24"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0975_6279_MNT_O_0M50_LAMB93_IGN69": "2025-03-24",
   "LHD_FXX_0976_6278_MNT_O_0M50_LAMB93_IGN69": "2025-03-24",
   "LHD_FXX_0976_6279_MNT_O_0M50_LAMB93_IGN69": "2025-03-24",
   "LHD_FXX_0977_6278_MNT_O_0M50_LAMB93_IGN69": "2025-03-24",
   "LHD_FXX_0977_6279_MNT_O_0M50_LAMB93_IGN69": "2025-03-24"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 134,
   "stations_resolved": 134,
   "width_median_m": 4.25,
   "width_p10_m": 2.0,
   "width_min_m": 1.0,
   "width_max_m": 12.0,
   "bounded_share": 0.328,
   "unbounded_share": 0.672,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.75,
   "window_m": [
    1593.0,
    1618.0
   ],
   "width_at_max25_m": 2.25,
   "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": 134,
    "stations_resolved": 134,
    "width_median_m": 3.0,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 10.5,
    "bounded_share": 0.94,
    "unbounded_share": 0.06,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.88,
    "window_m": [
     1593.0,
     1618.0
    ],
    "width_at_max25_m": 2.25,
    "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": "Draguignan",
  "county": "Var",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}