{
 "ocl_version": "0.1.0",
 "name": "Chemin Esponn\u00e8res",
 "slug": "chemin-esponneres",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 49.31174861739294,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 506.0,
   "end_distance_m": 508.0,
   "start_elevation_m": 447.08225670287743,
   "end_elevation_m": 448.0684916752253,
   "min_gradient_pct": -25.873977440929252,
   "suppressed_max_gradient_pct": 59.37886313013507,
   "suppressed_location_m": [
    501.0,
    503.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 38.719508054682215,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 308.0,
   "end_distance_m": 311.0,
   "start_elevation_m": 430.8282660127049,
   "end_elevation_m": 431.98985125434535,
   "min_gradient_pct": -26.31299903462339,
   "suppressed_max_gradient_pct": 58.45642967462178,
   "suppressed_location_m": [
    502.0,
    505.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 32.817315562452904,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 525.0,
   "end_distance_m": 530.0,
   "start_elevation_m": 449.99096608851306,
   "end_elevation_m": 451.6318318666357,
   "min_gradient_pct": -21.419070189401737,
   "suppressed_max_gradient_pct": 57.903287138674386,
   "suppressed_location_m": [
    501.0,
    506.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 28.217522240547055,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 520.0,
   "end_distance_m": 530.0,
   "start_elevation_m": 448.810079642581,
   "end_elevation_m": 451.6318318666357,
   "min_gradient_pct": -16.964551927354705,
   "suppressed_max_gradient_pct": 45.108660441192114,
   "suppressed_location_m": [
    500.0,
    510.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.974687916606342,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 300.0,
   "end_distance_m": 320.0,
   "start_elevation_m": 429.3959337843662,
   "end_elevation_m": 433.9908713676875,
   "min_gradient_pct": -12.096650195659322,
   "suppressed_max_gradient_pct": 23.89674846583631,
   "suppressed_location_m": [
    490.0,
    510.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.165814435009224,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 295.0,
   "end_distance_m": 320.0,
   "start_elevation_m": 428.44941775893517,
   "end_elevation_m": 433.9908713676875,
   "min_gradient_pct": -9.643161921260798,
   "suppressed_max_gradient_pct": 24.30449574432714,
   "suppressed_location_m": [
    501.0,
    526.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.590851607494983,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 270.0,
   "end_distance_m": 320.0,
   "start_elevation_m": 424.19544556394,
   "end_elevation_m": 433.9908713676875,
   "min_gradient_pct": -2.8941197766718005,
   "suppressed_max_gradient_pct": 20.12276344759414,
   "suppressed_location_m": [
    501.0,
    551.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.406916946230524,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 236.0,
   "end_distance_m": 336.0,
   "start_elevation_m": 419.98435960491145,
   "end_elevation_m": 436.39127655114197,
   "min_gradient_pct": 3.4884528376819617
  }
 ],
 "shape": {
  "ascent_concentration": 0.409,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 96.0,
  "shape_class": "sustained"
 },
 "length_m": 657.5634404745177,
 "start_elevation_m": 400.44067342871676,
 "end_elevation_m": 458.7231542773478,
 "endpoint_gain_m": 58.28248084863105,
 "overall_gradient_pct": 8.863400435792576,
 "accumulated_ascent_m": 61.6039626797438,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 32.817315562452904,
   "start_distance_m": 525.0,
   "end_distance_m": 530.0,
   "midpoint_distance_m": 527.5,
   "start_elevation_m": 449.99096608851306,
   "end_elevation_m": 451.6318318666357,
   "start_xy": [
    422168.7664575852,
    6229210.448082893
   ],
   "end_xy": [
    422170.06871605746,
    6229205.620648495
   ]
  },
  "max_10m": {
   "gradient_pct": 28.217522240547055,
   "start_distance_m": 520.0,
   "end_distance_m": 530.0,
   "midpoint_distance_m": 525.0,
   "start_elevation_m": 448.810079642581,
   "end_elevation_m": 451.6318318666357,
   "start_xy": [
    422168.2566715791,
    6229215.391295679
   ],
   "end_xy": [
    422170.06871605746,
    6229205.620648495
   ]
  },
  "max_20m": {
   "gradient_pct": 22.974687916606342,
   "start_distance_m": 300.0,
   "end_distance_m": 320.0,
   "midpoint_distance_m": 310.0,
   "start_elevation_m": 429.3959337843662,
   "end_elevation_m": 433.9908713676875,
   "start_xy": [
    422010.8603127632,
    6229154.614806698
   ],
   "end_xy": [
    422029.22559216723,
    6229148.2188378405
   ]
  },
  "max_25m": {
   "gradient_pct": 22.165814435009224,
   "start_distance_m": 295.0,
   "end_distance_m": 320.0,
   "midpoint_distance_m": 307.5,
   "start_elevation_m": 428.44941775893517,
   "end_elevation_m": 433.9908713676875,
   "start_xy": [
    422006.60244987893,
    6229157.235990334
   ],
   "end_xy": [
    422029.22559216723,
    6229148.2188378405
   ]
  },
  "max_50m": {
   "gradient_pct": 19.590851607494983,
   "start_distance_m": 270.0,
   "end_distance_m": 320.0,
   "midpoint_distance_m": 295.0,
   "start_elevation_m": 424.19544556394,
   "end_elevation_m": 433.9908713676875,
   "start_xy": [
    421984.0162485466,
    6229155.066771336
   ],
   "end_xy": [
    422029.22559216723,
    6229148.2188378405
   ]
  },
  "max_100m": {
   "gradient_pct": 16.406916946230524,
   "start_distance_m": 236.0,
   "end_distance_m": 336.0,
   "midpoint_distance_m": 286.0,
   "start_elevation_m": 419.98435960491145,
   "end_elevation_m": 436.39127655114197,
   "start_xy": [
    421960.88926623325,
    6229131.195735439
   ],
   "end_xy": [
    422044.8356024445,
    6229147.006003964
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -21.419070189401737,
   "start_distance_m": 630.0,
   "end_distance_m": 635.0,
   "midpoint_distance_m": 632.5,
   "start_elevation_m": 459.737179839998,
   "end_elevation_m": 458.66622633052793,
   "start_xy": [
    422164.0544844436,
    6229117.957422768
   ],
   "end_xy": [
    422166.09040522954,
    6229113.390692367
   ]
  },
  "min_10m": {
   "gradient_pct": -16.964551927354705,
   "start_distance_m": 630.0,
   "end_distance_m": 640.0,
   "midpoint_distance_m": 635.0,
   "start_elevation_m": 459.737179839998,
   "end_elevation_m": 458.04072464726255,
   "start_xy": [
    422164.0544844436,
    6229117.957422768
   ],
   "end_xy": [
    422167.29085758125,
    6229108.585437828
   ]
  },
  "min_20m": {
   "gradient_pct": -12.096650195659322,
   "start_distance_m": 621.0,
   "end_distance_m": 641.0,
   "midpoint_distance_m": 631.0,
   "start_elevation_m": 460.39528122999945,
   "end_elevation_m": 457.9759511908676,
   "start_xy": [
    422161.3701792113,
    6229126.402297771
   ],
   "end_xy": [
    422167.4272605033,
    6229107.5947843855
   ]
  },
  "min_25m": {
   "gradient_pct": -9.643161921260798,
   "start_distance_m": 621.0,
   "end_distance_m": 646.0,
   "midpoint_distance_m": 633.5,
   "start_elevation_m": 460.39528122999945,
   "end_elevation_m": 457.98449074968426,
   "start_xy": [
    422161.3701792113,
    6229126.402297771
   ],
   "end_xy": [
    422168.1092751133,
    6229102.6415171735
   ]
  },
  "min_50m": {
   "gradient_pct": -2.8941197766718005,
   "start_distance_m": 598.0,
   "end_distance_m": 648.0,
   "midpoint_distance_m": 623.0,
   "start_elevation_m": 459.580524928399,
   "end_elevation_m": 458.1334650400631,
   "start_xy": [
    422160.6487609627,
    6229149.39098098
   ],
   "end_xy": [
    422168.0031508866,
    6229100.682005769
   ]
  },
  "min_100m": {
   "gradient_pct": 3.4884528376819617,
   "start_distance_m": 557.0,
   "end_distance_m": 657.0,
   "midpoint_distance_m": 607.0,
   "start_elevation_m": 455.201412405578,
   "end_elevation_m": 458.68986524326,
   "start_xy": [
    422179.92929243465,
    6229180.6799267195
   ],
   "end_xy": [
    422165.76134700474,
    6229091.965681122
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 49.31174861739294,
   "start_distance_m": 506.0,
   "end_distance_m": 508.0,
   "midpoint_distance_m": 507.0,
   "start_elevation_m": 447.08225670287743,
   "end_elevation_m": 448.0684916752253,
   "start_xy": [
    422167.8835787686,
    6229229.38632343
   ],
   "end_xy": [
    422167.93687774154,
    6229227.387033751
   ]
  },
  "max_3m": {
   "gradient_pct": 38.719508054682215,
   "start_distance_m": 308.0,
   "end_distance_m": 311.0,
   "midpoint_distance_m": 309.5,
   "start_elevation_m": 430.8282660127049,
   "end_elevation_m": 431.98985125434535,
   "start_xy": [
    422017.672893378,
    6229150.420912879
   ],
   "end_xy": [
    422020.4207354518,
    6229149.281768408
   ]
  }
 },
 "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": 0.009,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.138,
   "obstruction_max_height_m": 18.32,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25
   ]
  },
  "excluded_ranges_m": [
   [
    500.0,
    505.0
   ]
  ],
  "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-pyr1",
   "road_pbf": "block-batch-fr-pyr1.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_E421-N6229_0m5@21LHD1FR-2025-03-21.tif",
   "data/cache/fr/ign-lidarhd_dtm_E422-N6229_0m5@21LHD1FR-2025-03-21.tif"
  ],
  "calculated_at": "2026-09-20T06:08:26+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pyr1.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pyr1",
  "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": [
   "E421-N6229",
   "E422-N6229"
  ],
  "elevation_blocks": [
   "21LHD1FR@2025-03-21"
  ],
  "ign_dalles": [
   "LHD_FXX_0421_6230_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0422_6230_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD1FR"
  ],
  "ign_editions": [
   "2025-03-21"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0421_6230_MNT_O_0M50_LAMB93_IGN69": "2025-03-21",
   "LHD_FXX_0422_6230_MNT_O_0M50_LAMB93_IGN69": "2025-03-21"
  },
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 32,
   "stations_resolved": 32,
   "width_median_m": 5.88,
   "width_p10_m": 2.3,
   "width_min_m": 1.0,
   "width_max_m": 12.0,
   "bounded_share": 0.344,
   "unbounded_share": 0.656,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.25,
   "window_m": [
    295.0,
    320.0
   ],
   "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": 32,
    "stations_resolved": 32,
    "width_median_m": 4.62,
    "width_p10_m": 1.5,
    "width_min_m": 1.0,
    "width_max_m": 12.0,
    "bounded_share": 0.781,
    "unbounded_share": 0.219,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.5,
    "window_m": [
     295.0,
     320.0
    ],
    "width_at_max25_m": 2.0,
    "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": "S\u00e9vignacq-Meyracq",
  "county": "Pyr\u00e9n\u00e9es-Atlantiques",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}