{
 "ocl_version": "0.1.0",
 "name": "Chemin d'Arregia",
 "slug": "chemin-d-arregia",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.598699329604813,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 513.0,
   "end_distance_m": 515.0,
   "start_elevation_m": 213.58510212045937,
   "end_elevation_m": 214.09707610705146,
   "min_gradient_pct": -19.472858507674573,
   "suppressed_max_gradient_pct": 198.67665499460685,
   "suppressed_location_m": [
    121.0,
    123.0
   ],
   "suppressed_min_gradient_pct": -186.9057563479103,
   "suppressed_min_location_m": [
    118.0,
    120.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.737755183454663,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 513.0,
   "end_distance_m": 516.0,
   "start_elevation_m": 213.58510212045937,
   "end_elevation_m": 214.357234775963,
   "min_gradient_pct": -18.78956877587446,
   "suppressed_max_gradient_pct": 133.6648727650669,
   "suppressed_location_m": [
    121.0,
    124.0
   ],
   "suppressed_min_gradient_pct": -125.89503013310643,
   "suppressed_min_location_m": [
    118.0,
    121.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.458911806288143,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 512.0,
   "end_distance_m": 517.0,
   "start_elevation_m": 213.33572998790925,
   "end_elevation_m": 214.60867557822365,
   "min_gradient_pct": -18.410430868236176,
   "suppressed_max_gradient_pct": 81.85563343193621,
   "suppressed_location_m": [
    121.0,
    126.0
   ],
   "suppressed_min_gradient_pct": -73.94770607888177,
   "suppressed_min_location_m": [
    116.0,
    121.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.073364075551297,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 507.0,
   "end_distance_m": 517.0,
   "start_elevation_m": 212.10133917066852,
   "end_elevation_m": 214.60867557822365,
   "min_gradient_pct": -17.928004765940955,
   "suppressed_max_gradient_pct": 42.70572340778983,
   "suppressed_location_m": [
    121.0,
    131.0
   ],
   "suppressed_min_gradient_pct": -35.58021748500096,
   "suppressed_min_location_m": [
    111.0,
    121.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.60469631703566,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 502.0,
   "end_distance_m": 522.0,
   "start_elevation_m": 211.005478578095,
   "end_elevation_m": 215.72641784150213,
   "min_gradient_pct": -15.843324812054078,
   "suppressed_max_gradient_pct": 23.73099400411789,
   "suppressed_location_m": [
    121.0,
    141.0
   ],
   "suppressed_min_gradient_pct": -16.718217083390243,
   "suppressed_min_location_m": [
    101.0,
    121.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.54938603331027,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 500.0,
   "end_distance_m": 525.0,
   "start_elevation_m": 210.63358634774036,
   "end_elevation_m": 216.27093285606793,
   "min_gradient_pct": -14.636215029061873
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.358122504590085,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 491.0,
   "end_distance_m": 541.0,
   "start_elevation_m": 209.17967603799545,
   "end_elevation_m": 219.3587372902905,
   "min_gradient_pct": -10.16500275913836
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.50807931415457,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 472.0,
   "end_distance_m": 572.0,
   "start_elevation_m": 206.40628460382877,
   "end_elevation_m": 223.91436391798334,
   "min_gradient_pct": -8.381639125080568
  }
 ],
 "shape": {
  "ascent_concentration": 0.476,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 154.0,
  "shape_class": "stepped"
 },
 "length_m": 877.6808342295815,
 "start_elevation_m": 199.32220731127896,
 "end_elevation_m": 239.14643730160043,
 "endpoint_gain_m": 39.82422999032147,
 "overall_gradient_pct": 4.537438717717784,
 "accumulated_ascent_m": 59.14841745117269,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.458911806288143,
   "start_distance_m": 512.0,
   "end_distance_m": 517.0,
   "midpoint_distance_m": 514.5,
   "start_elevation_m": 213.33572998790925,
   "end_elevation_m": 214.60867557822365,
   "start_xy": [
    358479.0303030942,
    6245548.245764891
   ],
   "end_xy": [
    358474.2341925818,
    6245549.6590320105
   ]
  },
  "max_10m": {
   "gradient_pct": 25.073364075551297,
   "start_distance_m": 507.0,
   "end_distance_m": 517.0,
   "midpoint_distance_m": 512.0,
   "start_elevation_m": 212.10133917066852,
   "end_elevation_m": 214.60867557822365,
   "start_xy": [
    358483.8264136066,
    6245546.832497771
   ],
   "end_xy": [
    358474.2341925818,
    6245549.6590320105
   ]
  },
  "max_20m": {
   "gradient_pct": 23.60469631703566,
   "start_distance_m": 502.0,
   "end_distance_m": 522.0,
   "midpoint_distance_m": 512.0,
   "start_elevation_m": 211.005478578095,
   "end_elevation_m": 215.72641784150213,
   "start_xy": [
    358488.622524119,
    6245545.41923065
   ],
   "end_xy": [
    358469.59070958104,
    6245551.503686074
   ]
  },
  "max_25m": {
   "gradient_pct": 22.54938603331027,
   "start_distance_m": 500.0,
   "end_distance_m": 525.0,
   "midpoint_distance_m": 512.5,
   "start_elevation_m": 210.63358634774036,
   "end_elevation_m": 216.27093285606793,
   "start_xy": [
    358490.54096832394,
    6245544.853923802
   ],
   "end_xy": [
    358466.8200656496,
    6245552.654134772
   ]
  },
  "max_50m": {
   "gradient_pct": 20.358122504590085,
   "start_distance_m": 491.0,
   "end_distance_m": 541.0,
   "midpoint_distance_m": 516.0,
   "start_elevation_m": 209.17967603799545,
   "end_elevation_m": 219.3587372902905,
   "start_xy": [
    358499.10847397853,
    6245545.938273753
   ],
   "end_xy": [
    358454.6073398036,
    6245562.152401041
   ]
  },
  "max_100m": {
   "gradient_pct": 17.50807931415457,
   "start_distance_m": 472.0,
   "end_distance_m": 572.0,
   "midpoint_distance_m": 522.0,
   "start_elevation_m": 206.40628460382877,
   "end_elevation_m": 223.91436391798334,
   "start_xy": [
    358517.1280010174,
    6245551.9629434785
   ],
   "end_xy": [
    358435.5660857153,
    6245586.615243123
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -18.410430868236176,
   "start_distance_m": 176.0,
   "end_distance_m": 181.0,
   "midpoint_distance_m": 178.5,
   "start_elevation_m": 204.00161147449688,
   "end_elevation_m": 203.08108993108507,
   "start_xy": [
    358686.6313893214,
    6245754.078847698
   ],
   "end_xy": [
    358683.2805120377,
    6245750.367834167
   ]
  },
  "min_10m": {
   "gradient_pct": -17.928004765940955,
   "start_distance_m": 175.0,
   "end_distance_m": 185.0,
   "midpoint_distance_m": 180.0,
   "start_elevation_m": 204.17584136761963,
   "end_elevation_m": 202.38304089102553,
   "start_xy": [
    358687.30156477814,
    6245754.821050405
   ],
   "end_xy": [
    358680.5998102107,
    6245747.399023342
   ]
  },
  "min_20m": {
   "gradient_pct": -15.843324812054078,
   "start_distance_m": 173.0,
   "end_distance_m": 193.0,
   "midpoint_distance_m": 183.0,
   "start_elevation_m": 204.44894309639076,
   "end_elevation_m": 201.28027813397995,
   "start_xy": [
    358688.6419156916,
    6245756.305455817
   ],
   "end_xy": [
    358675.2384065568,
    6245741.461401692
   ]
  },
  "min_25m": {
   "gradient_pct": -14.636215029061873,
   "start_distance_m": 173.0,
   "end_distance_m": 198.0,
   "midpoint_distance_m": 185.5,
   "start_elevation_m": 204.44894309639076,
   "end_elevation_m": 200.7898893391253,
   "start_xy": [
    358688.6419156916,
    6245756.305455817
   ],
   "end_xy": [
    358671.8875292731,
    6245737.75038816
   ]
  },
  "min_50m": {
   "gradient_pct": -10.16500275913836,
   "start_distance_m": 698.0,
   "end_distance_m": 748.0,
   "midpoint_distance_m": 723.0,
   "start_elevation_m": 225.98811506925963,
   "end_elevation_m": 220.90561368969045,
   "start_xy": [
    358346.26113558427,
    6245675.322894716
   ],
   "end_xy": [
    358311.7308602721,
    6245709.896162609
   ]
  },
  "min_100m": {
   "gradient_pct": -8.381639125080568,
   "start_distance_m": 653.0,
   "end_distance_m": 753.0,
   "midpoint_distance_m": 703.0,
   "start_elevation_m": 229.0457951193703,
   "end_elevation_m": 220.66415599428973,
   "start_xy": [
    358378.9776391679,
    6245644.497484987
   ],
   "end_xy": [
    358310.4362410704,
    6245714.725651311
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.598699329604813,
   "start_distance_m": 513.0,
   "end_distance_m": 515.0,
   "midpoint_distance_m": 514.0,
   "start_elevation_m": 213.58510212045937,
   "end_elevation_m": 214.09707610705146,
   "start_xy": [
    358478.0710809917,
    6245548.528418315
   ],
   "end_xy": [
    358476.15263678675,
    6245549.093725163
   ]
  },
  "max_3m": {
   "gradient_pct": 25.737755183454663,
   "start_distance_m": 513.0,
   "end_distance_m": 516.0,
   "midpoint_distance_m": 514.5,
   "start_elevation_m": 213.58510212045937,
   "end_elevation_m": 214.357234775963,
   "start_xy": [
    358478.0710809917,
    6245548.528418315
   ],
   "end_xy": [
    358475.19341468427,
    6245549.3763785865
   ]
  }
 },
 "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": 0.018,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0
   ],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.323,
   "obstruction_max_height_m": 29.79,
   "flagged_windows_m": [
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    113.0,
    128.0
   ]
  ],
  "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-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_E358-N6245_0m5@21LHD1EQ-2025-09-26.tif"
  ],
  "calculated_at": "2026-09-20T06:36:26+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": [
   "E358-N6245"
  ],
  "elevation_blocks": [
   "21LHD1EQ@2025-09-26"
  ],
  "ign_dalles": [
   "LHD_FXX_0358_6246_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD1EQ"
  ],
  "ign_editions": [
   "2025-09-26"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0358_6246_MNT_O_0M50_LAMB93_IGN69": "2025-09-26"
  },
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 40,
   "stations_resolved": 40,
   "width_median_m": 4.75,
   "width_p10_m": 2.98,
   "width_min_m": 2.0,
   "width_max_m": 11.0,
   "bounded_share": 0.175,
   "unbounded_share": 0.825,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.0,
   "window_m": [
    500.0,
    525.0
   ],
   "width_at_max25_m": 4.62,
   "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": 40,
    "stations_resolved": 40,
    "width_median_m": 5.38,
    "width_p10_m": 1.25,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.725,
    "unbounded_share": 0.275,
    "confidence_median": 1.0,
    "width_median_bounded_m": 4.25,
    "window_m": [
     500.0,
     525.0
    ],
    "width_at_max25_m": 7.12,
    "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": "Suhescun",
  "county": "Pyr\u00e9n\u00e9es-Atlantiques",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}