{
 "ocl_version": "0.1.0",
 "name": "Chemin de Darr\u00e9",
 "slug": "chemin-de-darre",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 39.30836501847352,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 394.0,
   "end_distance_m": 396.0,
   "start_elevation_m": 522.6354301843146,
   "end_elevation_m": 523.4215974846841,
   "min_gradient_pct": -25.24079878903649,
   "suppressed_max_gradient_pct": 52.91343318599502,
   "suppressed_location_m": [
    360.0,
    362.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 32.86068683531388,
   "diagnostic": true,
   "flags": [
    "no_bench_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 393.0,
   "end_distance_m": 396.0,
   "start_elevation_m": 522.4357768796247,
   "end_elevation_m": 523.4215974846841,
   "min_gradient_pct": -22.579368130686817,
   "suppressed_max_gradient_pct": 50.52332799018965,
   "suppressed_location_m": [
    134.0,
    137.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.442287203277374,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 392.0,
   "end_distance_m": 397.0,
   "start_elevation_m": 522.295782235296,
   "end_elevation_m": 523.5678965954598,
   "min_gradient_pct": -7.441373102939224,
   "suppressed_max_gradient_pct": 44.336987209826475,
   "suppressed_location_m": [
    133.0,
    138.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.52565050566318,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 545.0,
   "end_distance_m": 555.0,
   "start_elevation_m": 546.5183260446113,
   "end_elevation_m": 548.7708910951776,
   "min_gradient_pct": 0.46892784677311283,
   "suppressed_max_gradient_pct": 31.2948350562624,
   "suppressed_location_m": [
    131.0,
    141.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.220813829596864,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 535.0,
   "end_distance_m": 555.0,
   "start_elevation_m": 544.3267283292582,
   "end_elevation_m": 548.7708910951776,
   "min_gradient_pct": 2.152162546142904,
   "suppressed_max_gradient_pct": 24.36148883884414,
   "suppressed_location_m": [
    359.0,
    379.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.107765088053384,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "texture_excluded"
   ],
   "start_distance_m": 535.0,
   "end_distance_m": 560.0,
   "start_elevation_m": 544.3267283292582,
   "end_elevation_m": 549.8536696012716,
   "min_gradient_pct": 2.5779593527013276,
   "suppressed_max_gradient_pct": 26.124268993450414,
   "suppressed_location_m": [
    113.0,
    138.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.32589673124562,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 529.0,
   "end_distance_m": 579.0,
   "start_elevation_m": 543.1558499362536,
   "end_elevation_m": 553.8187983018764,
   "min_gradient_pct": 4.189391155460271
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.833665058157862,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 485.0,
   "end_distance_m": 585.0,
   "start_elevation_m": 534.9705381328346,
   "end_elevation_m": 554.8042031909924,
   "min_gradient_pct": 5.804046101682161
  }
 ],
 "shape": {
  "ascent_concentration": 0.335,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 201.0,
  "shape_class": "sustained"
 },
 "length_m": 748.1016781645701,
 "start_elevation_m": 477.19205162305377,
 "end_elevation_m": 572.6219875770672,
 "endpoint_gain_m": 95.42993595401344,
 "overall_gradient_pct": 12.756278824042477,
 "accumulated_ascent_m": 99.67355031861746,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.442287203277374,
   "start_distance_m": 392.0,
   "end_distance_m": 397.0,
   "midpoint_distance_m": 394.5,
   "start_elevation_m": 522.295782235296,
   "end_elevation_m": 523.5678965954598,
   "start_xy": [
    479625.07627036556,
    6218605.029055355
   ],
   "end_xy": [
    479620.60225834174,
    6218607.261367253
   ]
  },
  "max_10m": {
   "gradient_pct": 22.52565050566318,
   "start_distance_m": 545.0,
   "end_distance_m": 555.0,
   "midpoint_distance_m": 550.0,
   "start_elevation_m": 546.5183260446113,
   "end_elevation_m": 548.7708910951776,
   "start_xy": [
    479486.3836881043,
    6218665.176977588
   ],
   "end_xy": [
    479476.41963139764,
    6218666.024074954
   ]
  },
  "max_20m": {
   "gradient_pct": 22.220813829596864,
   "start_distance_m": 535.0,
   "end_distance_m": 555.0,
   "midpoint_distance_m": 545.0,
   "start_elevation_m": 544.3267283292582,
   "end_elevation_m": 548.7708910951776,
   "start_xy": [
    479496.3346530333,
    6218664.187961598
   ],
   "end_xy": [
    479476.41963139764,
    6218666.024074954
   ]
  },
  "max_25m": {
   "gradient_pct": 22.107765088053384,
   "start_distance_m": 535.0,
   "end_distance_m": 560.0,
   "midpoint_distance_m": 547.5,
   "start_elevation_m": 544.3267283292582,
   "end_elevation_m": 549.8536696012716,
   "start_xy": [
    479496.3346530333,
    6218664.187961598
   ],
   "end_xy": [
    479471.4376030443,
    6218666.447623637
   ]
  },
  "max_50m": {
   "gradient_pct": 21.32589673124562,
   "start_distance_m": 529.0,
   "end_distance_m": 579.0,
   "midpoint_distance_m": 554.0,
   "start_elevation_m": 543.1558499362536,
   "end_elevation_m": 553.8187983018764,
   "start_xy": [
    479502.2923875407,
    6218663.494903612
   ],
   "end_xy": [
    479452.526632991,
    6218668.21968939
   ]
  },
  "max_100m": {
   "gradient_pct": 19.833665058157862,
   "start_distance_m": 485.0,
   "end_distance_m": 585.0,
   "midpoint_distance_m": 535.0,
   "start_elevation_m": 534.9705381328346,
   "end_elevation_m": 554.8042031909924,
   "start_xy": [
    479544.09751584,
    6218650.598092127
   ],
   "end_xy": [
    479446.612036363,
    6218669.228424601
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -7.441373102939224,
   "start_distance_m": 156.0,
   "end_distance_m": 161.0,
   "midpoint_distance_m": 158.5,
   "start_elevation_m": 493.6325487561727,
   "end_elevation_m": 493.26048010102573,
   "start_xy": [
    479762.75300952594,
    6218703.556354207
   ],
   "end_xy": [
    479759.3421742729,
    6218699.900372413
   ]
  },
  "min_10m": {
   "gradient_pct": 0.46892784677311283,
   "start_distance_m": 730.0,
   "end_distance_m": 740.0,
   "midpoint_distance_m": 735.0,
   "start_elevation_m": 572.1304649404044,
   "end_elevation_m": 572.1773577250817,
   "start_xy": [
    479313.2226488997,
    6218677.137265127
   ],
   "end_xy": [
    479303.43093304965,
    6218675.106920154
   ]
  },
  "min_20m": {
   "gradient_pct": 2.152162546142904,
   "start_distance_m": 719.0,
   "end_distance_m": 739.0,
   "midpoint_distance_m": 729.0,
   "start_elevation_m": 571.6953465338559,
   "end_elevation_m": 572.1257790430844,
   "start_xy": [
    479324.0788927022,
    6218678.8541151155
   ],
   "end_xy": [
    479304.41010463465,
    6218675.309954652
   ]
  },
  "min_25m": {
   "gradient_pct": 2.5779593527013276,
   "start_distance_m": 719.0,
   "end_distance_m": 744.0,
   "midpoint_distance_m": 731.5,
   "start_elevation_m": 571.6953465338559,
   "end_elevation_m": 572.3398363720312,
   "start_xy": [
    479324.0788927022,
    6218678.8541151155
   ],
   "end_xy": [
    479299.5142467096,
    6218674.2947821645
   ]
  },
  "min_50m": {
   "gradient_pct": 4.189391155460271,
   "start_distance_m": 9.0,
   "end_distance_m": 59.0,
   "midpoint_distance_m": 34.0,
   "start_elevation_m": 477.45981443537346,
   "end_elevation_m": 479.5545100131036,
   "start_xy": [
    479876.211054376,
    6218789.147371202
   ],
   "end_xy": [
    479839.35218390875,
    6218757.581149827
   ]
  },
  "min_100m": {
   "gradient_pct": 5.804046101682161,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 477.19205162305377,
   "end_elevation_m": 482.99609772473593,
   "start_xy": [
    479882.744,
    6218795.314
   ],
   "end_xy": [
    479801.13004181976,
    6218743.02233979
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 39.30836501847352,
   "start_distance_m": 394.0,
   "end_distance_m": 396.0,
   "midpoint_distance_m": 395.0,
   "start_elevation_m": 522.6354301843146,
   "end_elevation_m": 523.4215974846841,
   "start_xy": [
    479623.286665556,
    6218605.921980115
   ],
   "end_xy": [
    479621.4970607465,
    6218606.814904873
   ]
  },
  "max_3m": {
   "gradient_pct": 32.86068683531388,
   "start_distance_m": 393.0,
   "end_distance_m": 396.0,
   "midpoint_distance_m": 394.5,
   "start_elevation_m": 522.4357768796247,
   "end_elevation_m": 523.4215974846841,
   "start_xy": [
    479624.1814679608,
    6218605.475517735
   ],
   "end_xy": [
    479621.4970607465,
    6218606.814904873
   ]
  }
 },
 "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": {
  "no_bench_suppression": {
   "masked_fraction": 0.096,
   "windows_resited": [
    3.0,
    5.0,
    10.0,
    25.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.136,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 358.0,
     "end_m": 383.0,
     "raw_pct": 24.77,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 358.0,
     "end_m": 363.0,
     "raw_pct": 37.97,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.408,
   "obstruction_max_height_m": 22.58,
   "flagged_windows_m": [
    2,
    3,
    5
   ]
  },
  "excluded_ranges_m": [
   [
    110.0,
    140.0
   ],
   [
    356.0,
    385.0
   ],
   [
    420.0,
    460.0
   ]
  ],
  "review": [],
  "extent": []
 },
 "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_E479-N6218_0m5@21LHD1GR1-2025-04-03.tif"
  ],
  "calculated_at": "2026-09-20T05:55:10+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": [
   "E479-N6218"
  ],
  "elevation_blocks": [
   "21LHD1GR1@2025-04-03"
  ],
  "ign_dalles": [
   "LHD_FXX_0479_6219_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD1GR1"
  ],
  "ign_editions": [
   "2025-04-03"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0479_6219_MNT_O_0M50_LAMB93_IGN69": "2025-04-03"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 6,
  "carriageway": {
   "stations": 35,
   "stations_resolved": 35,
   "width_median_m": 2.75,
   "width_p10_m": 1.25,
   "width_min_m": 1.0,
   "width_max_m": 8.75,
   "bounded_share": 0.486,
   "unbounded_share": 0.514,
   "confidence_median": 0.0,
   "width_median_bounded_m": 2.25,
   "window_m": [
    535.0,
    560.0
   ],
   "width_at_max25_m": 1.88,
   "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": 35,
    "stations_resolved": 35,
    "width_median_m": 2.5,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 11.0,
    "bounded_share": 0.886,
    "unbounded_share": 0.114,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.5,
    "window_m": [
     535.0,
     560.0
    ],
    "width_at_max25_m": 2.75,
    "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": "Laborde",
  "county": "Hautes-Pyr\u00e9n\u00e9es",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}