{
 "ocl_version": "0.1.0",
 "name": "Chemin d'Arrist",
 "slug": "chemin-d-arrist-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 28.410201933451162,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded"
   ],
   "start_distance_m": 255.0,
   "end_distance_m": 257.0,
   "start_elevation_m": 819.6442965687434,
   "end_elevation_m": 820.2125006074124,
   "min_gradient_pct": -8.137305587729315,
   "suppressed_max_gradient_pct": 70.03216894814841,
   "suppressed_location_m": [
    1383.0,
    1385.0
   ],
   "suppressed_min_gradient_pct": -25.092802293141858,
   "suppressed_min_location_m": [
    1380.0,
    1382.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.555259051436526,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded"
   ],
   "start_distance_m": 255.0,
   "end_distance_m": 258.0,
   "start_elevation_m": 819.6442965687434,
   "end_elevation_m": 820.4409543402865,
   "min_gradient_pct": -5.794675723859655,
   "suppressed_max_gradient_pct": 56.99968638524903,
   "suppressed_location_m": [
    1383.0,
    1386.0
   ],
   "suppressed_min_gradient_pct": -15.892087553500764,
   "suppressed_min_location_m": [
    1379.0,
    1382.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.482405876512075,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "texture_excluded"
   ],
   "start_distance_m": 1367.0,
   "end_distance_m": 1372.0,
   "start_elevation_m": 950.4918082213657,
   "end_elevation_m": 951.7659285151913,
   "min_gradient_pct": -4.358546405630932,
   "suppressed_max_gradient_pct": 41.64619064215003,
   "suppressed_location_m": [
    1382.0,
    1387.0
   ],
   "suppressed_min_gradient_pct": -12.007043668388633,
   "suppressed_min_location_m": [
    1377.0,
    1382.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.388840583659203,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 255.0,
   "end_distance_m": 265.0,
   "start_elevation_m": 819.6442965687434,
   "end_elevation_m": 821.9831806271093,
   "min_gradient_pct": -2.8628880411110913,
   "suppressed_max_gradient_pct": 25.328520211897967,
   "suppressed_location_m": [
    1382.0,
    1392.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.79373516991768,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1353.0,
   "end_distance_m": 1373.0,
   "start_elevation_m": 947.4231594731857,
   "end_elevation_m": 951.9819065071692,
   "min_gradient_pct": -1.650265877564152
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.661959399832995,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 1347.0,
   "end_distance_m": 1372.0,
   "start_elevation_m": 946.100438665233,
   "end_elevation_m": 951.7659285151913,
   "min_gradient_pct": -1.3304310057210387,
   "suppressed_max_gradient_pct": 22.814331841547755,
   "suppressed_location_m": [
    1092.0,
    1117.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.989189292638912,
   "diagnostic": false,
   "flags": [
    "texture_excluded"
   ],
   "start_distance_m": 1322.0,
   "end_distance_m": 1372.0,
   "start_elevation_m": 941.2713338688718,
   "end_elevation_m": 951.7659285151913,
   "min_gradient_pct": 0.6347901275753429,
   "suppressed_max_gradient_pct": 21.905230016717496,
   "suppressed_location_m": [
    1071.0,
    1121.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.179093875075523,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1273.0,
   "end_distance_m": 1373.0,
   "start_elevation_m": 931.8028126320937,
   "end_elevation_m": 951.9819065071692,
   "min_gradient_pct": 1.8350950607665482
  }
 ],
 "shape": {
  "ascent_concentration": 0.369,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 162.0,
  "shape_class": "sustained"
 },
 "length_m": 1409.1745020591911,
 "start_elevation_m": 812.2305649755924,
 "end_elevation_m": 956.478585177663,
 "endpoint_gain_m": 144.24802020207062,
 "overall_gradient_pct": 10.2363490108063,
 "accumulated_ascent_m": 146.0737073533985,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.482405876512075,
   "start_distance_m": 1367.0,
   "end_distance_m": 1372.0,
   "midpoint_distance_m": 1369.5,
   "start_elevation_m": 950.4918082213657,
   "end_elevation_m": 951.7659285151913,
   "start_xy": [
    424072.1841776075,
    6214182.643886726
   ],
   "end_xy": [
    424076.878115767,
    6214180.979096129
   ]
  },
  "max_10m": {
   "gradient_pct": 23.388840583659203,
   "start_distance_m": 255.0,
   "end_distance_m": 265.0,
   "midpoint_distance_m": 260.0,
   "start_elevation_m": 819.6442965687434,
   "end_elevation_m": 821.9831806271093,
   "start_xy": [
    423148.6297489065,
    6214665.871284568
   ],
   "end_xy": [
    423156.3532048071,
    6214671.521191597
   ]
  },
  "max_20m": {
   "gradient_pct": 22.79373516991768,
   "start_distance_m": 1353.0,
   "end_distance_m": 1373.0,
   "midpoint_distance_m": 1363.0,
   "start_elevation_m": 947.4231594731857,
   "end_elevation_m": 951.9819065071692,
   "start_xy": [
    424059.32437109825,
    6214188.0352073135
   ],
   "end_xy": [
    424077.76941536576,
    6214180.52568128
   ]
  },
  "max_25m": {
   "gradient_pct": 22.661959399832995,
   "start_distance_m": 1347.0,
   "end_distance_m": 1372.0,
   "midpoint_distance_m": 1359.5,
   "start_elevation_m": 946.100438665233,
   "end_elevation_m": 951.7659285151913,
   "start_xy": [
    424053.99272917095,
    6214190.785196459
   ],
   "end_xy": [
    424076.878115767,
    6214180.979096129
   ]
  },
  "max_50m": {
   "gradient_pct": 20.989189292638912,
   "start_distance_m": 1322.0,
   "end_distance_m": 1372.0,
   "midpoint_distance_m": 1347.0,
   "start_elevation_m": 941.2713338688718,
   "end_elevation_m": 951.7659285151913,
   "start_xy": [
    424031.331441094,
    6214200.942853362
   ],
   "end_xy": [
    424076.878115767,
    6214180.979096129
   ]
  },
  "max_100m": {
   "gradient_pct": 20.179093875075523,
   "start_distance_m": 1273.0,
   "end_distance_m": 1373.0,
   "midpoint_distance_m": 1323.0,
   "start_elevation_m": 931.8028126320937,
   "end_elevation_m": 951.9819065071692,
   "start_xy": [
    423995.4647121693,
    6214233.874243741
   ],
   "end_xy": [
    424077.76941536576,
    6214180.52568128
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -4.358546405630932,
   "start_distance_m": 1175.0,
   "end_distance_m": 1180.0,
   "midpoint_distance_m": 1177.5,
   "start_elevation_m": 922.6108245538604,
   "end_elevation_m": 922.3928972335789,
   "start_xy": [
    423935.167333889,
    6214310.355398296
   ],
   "end_xy": [
    423938.5032573306,
    6214306.69223578
   ]
  },
  "min_10m": {
   "gradient_pct": -2.8628880411110913,
   "start_distance_m": 1173.0,
   "end_distance_m": 1183.0,
   "midpoint_distance_m": 1178.0,
   "start_elevation_m": 922.6206677156124,
   "end_elevation_m": 922.3343789115013,
   "start_xy": [
    423933.45757966454,
    6214311.3930593645
   ],
   "end_xy": [
    423940.2392416002,
    6214304.249588902
   ]
  },
  "min_20m": {
   "gradient_pct": -1.650265877564152,
   "start_distance_m": 535.0,
   "end_distance_m": 555.0,
   "midpoint_distance_m": 545.0,
   "start_elevation_m": 856.0530141630487,
   "end_elevation_m": 855.7229609875359,
   "start_xy": [
    423401.4353431399,
    6214595.903343269
   ],
   "end_xy": [
    423421.40260102594,
    6214595.186841818
   ]
  },
  "min_25m": {
   "gradient_pct": -1.3304310057210387,
   "start_distance_m": 535.0,
   "end_distance_m": 560.0,
   "midpoint_distance_m": 547.5,
   "start_elevation_m": 856.0530141630487,
   "end_elevation_m": 855.7204064116185,
   "start_xy": [
    423401.4353431399,
    6214595.903343269
   ],
   "end_xy": [
    423426.31054761406,
    6214594.347229424
   ]
  },
  "min_50m": {
   "gradient_pct": 0.6347901275753429,
   "start_distance_m": 524.0,
   "end_distance_m": 574.0,
   "midpoint_distance_m": 549.0,
   "start_elevation_m": 855.8068583707022,
   "end_elevation_m": 856.1242534344899,
   "start_xy": [
    423390.45085406856,
    6214596.310384978
   ],
   "end_xy": [
    423439.29186398507,
    6214589.104575012
   ]
  },
  "min_100m": {
   "gradient_pct": 1.8350950607665482,
   "start_distance_m": 529.0,
   "end_distance_m": 629.0,
   "midpoint_distance_m": 579.0,
   "start_elevation_m": 855.9611282815936,
   "end_elevation_m": 857.7962233423601,
   "start_xy": [
    423395.4360107855,
    6214595.992849141
   ],
   "end_xy": [
    423489.80747532,
    6214567.501819261
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 28.410201933451162,
   "start_distance_m": 255.0,
   "end_distance_m": 257.0,
   "midpoint_distance_m": 256.0,
   "start_elevation_m": 819.6442965687434,
   "end_elevation_m": 820.2125006074124,
   "start_xy": [
    423148.6297489065,
    6214665.871284568
   ],
   "end_xy": [
    423149.9396520738,
    6214667.382626253
   ]
  },
  "max_3m": {
   "gradient_pct": 26.555259051436526,
   "start_distance_m": 255.0,
   "end_distance_m": 258.0,
   "midpoint_distance_m": 256.5,
   "start_elevation_m": 819.6442965687434,
   "end_elevation_m": 820.4409543402865,
   "start_xy": [
    423148.6297489065,
    6214665.871284568
   ],
   "end_xy": [
    423150.59460365743,
    6214668.138297097
   ]
  }
 },
 "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": 0.005,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    5.0
   ],
   "minima_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.032,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    25.0,
    50.0
   ],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 25.0,
     "start_m": 1092.0,
     "end_m": 1117.0,
     "raw_pct": 22.81,
     "reason": "hump"
    },
    {
     "window_m": 5.0,
     "start_m": 1404.0,
     "end_m": 1409.0,
     "raw_pct": 27.84,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.222,
   "obstruction_max_height_m": 20.51,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    1090.0,
    1119.0
   ],
   [
    1381.0,
    1387.0
   ],
   [
    1402.0,
    1409.0
   ]
  ],
  "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_E422-N6214_0m5@21LHD1FR-2025-03-21.tif",
   "data/cache/fr/ign-lidarhd_dtm_E423-N6214_0m5@21LHD1FR-2025-03-21.tif",
   "data/cache/fr/ign-lidarhd_dtm_E424-N6214_0m5@21LHD1FR-2025-03-21.tif"
  ],
  "calculated_at": "2026-09-20T06:27:54+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": [
   "E422-N6214",
   "E423-N6214",
   "E424-N6214"
  ],
  "elevation_blocks": [
   "21LHD1FR@2025-03-21"
  ],
  "ign_dalles": [
   "LHD_FXX_0422_6215_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0423_6215_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0424_6215_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD1FR"
  ],
  "ign_editions": [
   "2025-03-21"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0422_6215_MNT_O_0M50_LAMB93_IGN69": "2025-03-21",
   "LHD_FXX_0423_6215_MNT_O_0M50_LAMB93_IGN69": "2025-03-21",
   "LHD_FXX_0424_6215_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": 63,
   "stations_resolved": 63,
   "width_median_m": 4.25,
   "width_p10_m": 2.75,
   "width_min_m": 1.0,
   "width_max_m": 9.0,
   "bounded_share": 0.46,
   "unbounded_share": 0.54,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.0,
   "window_m": [
    1347.0,
    1372.0
   ],
   "width_at_max25_m": 3.75,
   "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": 63,
    "stations_resolved": 63,
    "width_median_m": 3.75,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.905,
    "unbounded_share": 0.095,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.25,
    "window_m": [
     1347.0,
     1372.0
    ],
    "width_at_max25_m": 4.0,
    "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": "Eaux-Bonnes",
  "county": "Pyr\u00e9n\u00e9es-Atlantiques",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}