{
 "ocl_version": "0.1.0",
 "name": "Impasse du Puy de Lagarde",
 "slug": "impasse-du-puy-de-lagarde",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 29.86778852732641,
   "diagnostic": true,
   "flags": [
    "no_bench_excluded",
    "no_bench_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 469.0,
   "end_distance_m": 471.0,
   "start_elevation_m": 129.17211896413443,
   "end_elevation_m": 129.76947473468095,
   "min_gradient_pct": -20.32743252569631,
   "suppressed_max_gradient_pct": 43.02677416128091,
   "suppressed_location_m": [
    443.0,
    445.0
   ],
   "suppressed_min_gradient_pct": -22.027015329578603,
   "suppressed_min_location_m": [
    312.0,
    314.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.802399977538055,
   "diagnostic": true,
   "flags": [
    "no_bench_excluded",
    "no_bench_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 468.0,
   "end_distance_m": 471.0,
   "start_elevation_m": 128.9354027353548,
   "end_elevation_m": 129.76947473468095,
   "min_gradient_pct": -11.597835879967041,
   "suppressed_max_gradient_pct": 41.58427940448538,
   "suppressed_location_m": [
    443.0,
    446.0
   ],
   "suppressed_min_gradient_pct": -13.596120511160356,
   "suppressed_min_location_m": [
    312.0,
    315.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.752603250441098,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 467.0,
   "end_distance_m": 472.0,
   "start_elevation_m": 128.74198484516205,
   "end_elevation_m": 129.9296150076841,
   "min_gradient_pct": -8.55431408017779,
   "suppressed_max_gradient_pct": 28.38749284227987,
   "suppressed_location_m": [
    442.0,
    447.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.959701296600826,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 476.0,
   "end_distance_m": 486.0,
   "start_elevation_m": 130.57137021421605,
   "end_elevation_m": 132.76734034387613,
   "min_gradient_pct": -3.5018263729401156,
   "suppressed_max_gradient_pct": 25.519258072844195,
   "suppressed_location_m": [
    289.0,
    299.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.938689001456936,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 465.0,
   "end_distance_m": 485.0,
   "start_elevation_m": 128.368853287425,
   "end_elevation_m": 132.55659108771638,
   "min_gradient_pct": -1.5241695245721587
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.214527232269575,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 463.0,
   "end_distance_m": 488.0,
   "start_elevation_m": 128.02263132135627,
   "end_elevation_m": 133.07626312942367,
   "min_gradient_pct": -1.0249490694176302
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.749253562986155,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 463.0,
   "end_distance_m": 513.0,
   "start_elevation_m": 128.02263132135627,
   "end_elevation_m": 137.39725810284935,
   "min_gradient_pct": -0.300825836586597
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.54589330989694,
   "diagnostic": false,
   "flags": [
    "no_bench_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 463.0,
   "end_distance_m": 563.0,
   "start_elevation_m": 128.02263132135627,
   "end_elevation_m": 144.5685246312532,
   "min_gradient_pct": 0.9991268906418895,
   "suppressed_max_gradient_pct": 17.096401011747446,
   "suppressed_location_m": [
    443.0,
    543.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.374,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 258.0,
  "shape_class": "sustained"
 },
 "length_m": 755.22766843905,
 "start_elevation_m": 88.71941763360446,
 "end_elevation_m": 168.25842835327006,
 "endpoint_gain_m": 79.5390107196656,
 "overall_gradient_pct": 10.531792470482657,
 "accumulated_ascent_m": 82.035724100927,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.752603250441098,
   "start_distance_m": 467.0,
   "end_distance_m": 472.0,
   "midpoint_distance_m": 469.5,
   "start_elevation_m": 128.74198484516205,
   "end_elevation_m": 129.9296150076841,
   "start_xy": [
    507675.4872385079,
    6445043.398371864
   ],
   "end_xy": [
    507676.75179419725,
    6445038.560924303
   ]
  },
  "max_10m": {
   "gradient_pct": 21.959701296600826,
   "start_distance_m": 476.0,
   "end_distance_m": 486.0,
   "midpoint_distance_m": 481.0,
   "start_elevation_m": 130.57137021421605,
   "end_elevation_m": 132.76734034387613,
   "start_xy": [
    507677.7634387487,
    6445034.690966254
   ],
   "end_xy": [
    507680.2925501275,
    6445025.016071131
   ]
  },
  "max_20m": {
   "gradient_pct": 20.938689001456936,
   "start_distance_m": 465.0,
   "end_distance_m": 485.0,
   "midpoint_distance_m": 475.0,
   "start_elevation_m": 128.368853287425,
   "end_elevation_m": 132.55659108771638,
   "start_xy": [
    507674.9814162321,
    6445045.333350888
   ],
   "end_xy": [
    507680.0396389896,
    6445025.983560643
   ]
  },
  "max_25m": {
   "gradient_pct": 20.214527232269575,
   "start_distance_m": 463.0,
   "end_distance_m": 488.0,
   "midpoint_distance_m": 475.5,
   "start_elevation_m": 128.02263132135627,
   "end_elevation_m": 133.07626312942367,
   "start_xy": [
    507674.47559395636,
    6445047.268329914
   ],
   "end_xy": [
    507680.33515258756,
    6445023.024071301
   ]
  },
  "max_50m": {
   "gradient_pct": 18.749253562986155,
   "start_distance_m": 463.0,
   "end_distance_m": 513.0,
   "midpoint_distance_m": 488.0,
   "start_elevation_m": 128.02263132135627,
   "end_elevation_m": 137.39725810284935,
   "start_xy": [
    507674.47559395636,
    6445047.268329914
   ],
   "end_xy": [
    507680.0669810897,
    6444998.025509661
   ]
  },
  "max_100m": {
   "gradient_pct": 16.54589330989694,
   "start_distance_m": 463.0,
   "end_distance_m": 563.0,
   "midpoint_distance_m": 513.0,
   "start_elevation_m": 128.02263132135627,
   "end_elevation_m": 144.5685246312532,
   "start_xy": [
    507674.47559395636,
    6445047.268329914
   ],
   "end_xy": [
    507666.6891235047,
    6444950.016951431
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -8.55431408017779,
   "start_distance_m": 55.0,
   "end_distance_m": 60.0,
   "midpoint_distance_m": 57.5,
   "start_elevation_m": 91.19832076735314,
   "end_elevation_m": 90.77060506334425,
   "start_xy": [
    507641.5871636116,
    6445395.431951674
   ],
   "end_xy": [
    507645.33885220246,
    6445392.126678203
   ]
  },
  "min_10m": {
   "gradient_pct": -3.5018263729401156,
   "start_distance_m": 55.0,
   "end_distance_m": 65.0,
   "midpoint_distance_m": 60.0,
   "start_elevation_m": 91.19832076735314,
   "end_elevation_m": 90.84813813005913,
   "start_xy": [
    507641.5871636116,
    6445395.431951674
   ],
   "end_xy": [
    507648.7214836804,
    6445388.46273346
   ]
  },
  "min_20m": {
   "gradient_pct": -1.5241695245721587,
   "start_distance_m": 55.0,
   "end_distance_m": 75.0,
   "midpoint_distance_m": 65.0,
   "start_elevation_m": 91.19832076735314,
   "end_elevation_m": 90.8934868624387,
   "start_xy": [
    507641.5871636116,
    6445395.431951674
   ],
   "end_xy": [
    507655.11521171225,
    6445380.773764618
   ]
  },
  "min_25m": {
   "gradient_pct": -1.0249490694176302,
   "start_distance_m": 55.0,
   "end_distance_m": 80.0,
   "midpoint_distance_m": 67.5,
   "start_elevation_m": 91.19832076735314,
   "end_elevation_m": 90.94208349999873,
   "start_xy": [
    507641.5871636116,
    6445395.431951674
   ],
   "end_xy": [
    507658.3120757282,
    6445376.929280196
   ]
  },
  "min_50m": {
   "gradient_pct": -0.300825836586597,
   "start_distance_m": 55.0,
   "end_distance_m": 105.0,
   "midpoint_distance_m": 80.0,
   "start_elevation_m": 91.19832076735314,
   "end_elevation_m": 91.04790784905984,
   "start_xy": [
    507641.5871636116,
    6445395.431951674
   ],
   "end_xy": [
    507676.3887346762,
    6445359.901800368
   ]
  },
  "min_100m": {
   "gradient_pct": 0.9991268906418895,
   "start_distance_m": 55.0,
   "end_distance_m": 155.0,
   "midpoint_distance_m": 105.0,
   "start_elevation_m": 91.19832076735314,
   "end_elevation_m": 92.19744765799503,
   "start_xy": [
    507641.5871636116,
    6445395.431951674
   ],
   "end_xy": [
    507721.48044569,
    6445347.390463627
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 29.86778852732641,
   "start_distance_m": 469.0,
   "end_distance_m": 471.0,
   "midpoint_distance_m": 470.0,
   "start_elevation_m": 129.17211896413443,
   "end_elevation_m": 129.76947473468095,
   "start_xy": [
    507675.9930607836,
    6445041.46339284
   ],
   "end_xy": [
    507676.49888305936,
    6445039.528413815
   ]
  },
  "max_3m": {
   "gradient_pct": 27.802399977538055,
   "start_distance_m": 468.0,
   "end_distance_m": 471.0,
   "midpoint_distance_m": 469.5,
   "start_elevation_m": 128.9354027353548,
   "end_elevation_m": 129.76947473468095,
   "start_xy": [
    507675.7401496458,
    6445042.430882352
   ],
   "end_xy": [
    507676.49888305936,
    6445039.528413815
   ]
  }
 },
 "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": 0.161,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    100.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0
   ],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.686,
   "obstruction_max_height_m": 30.44,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    290.0,
    320.0
   ],
   [
    370.0,
    460.0
   ]
  ],
  "review": [],
  "extent": []
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "16bcc1553fe58b280e0c4a66a3ab0980530490a6",
   "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-so4",
   "road_pbf": "block-batch-fr-so4.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": "sha256:18f786cf9fa98070"
  },
  "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_E507-N6444_0m5@21LHD2HM-2025-06-26.tif",
   "data/cache/fr/ign-lidarhd_dtm_E507-N6445_0m5@21LHD2HM-2025-06-26.tif"
  ],
  "calculated_at": "2026-09-27T04:37:31+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-so4.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-so4",
  "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": [
   "E507-N6444",
   "E507-N6445"
  ],
  "elevation_blocks": [
   "21LHD2HM@2025-06-26"
  ],
  "ign_dalles": [
   "LHD_FXX_0507_6445_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0507_6446_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD2HM"
  ],
  "ign_editions": [
   "2025-06-26"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0507_6445_MNT_O_0M50_LAMB93_IGN69": "2025-06-26",
   "LHD_FXX_0507_6446_MNT_O_0M50_LAMB93_IGN69": "2025-06-26"
  },
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": "none \u2014 the route carried no way list and no mapped way runs along it; own decks unmasked",
  "carriageway": {
   "stations": 37,
   "stations_resolved": 37,
   "width_median_m": 3.75,
   "width_p10_m": 2.0,
   "width_min_m": 1.0,
   "width_max_m": 6.75,
   "bounded_share": 0.297,
   "unbounded_share": 0.703,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.0,
   "window_m": [
    463.0,
    488.0
   ],
   "width_at_max25_m": 3.0,
   "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": 37,
    "stations_resolved": 37,
    "width_median_m": 2.5,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 8.5,
    "bounded_share": 0.973,
    "unbounded_share": 0.027,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.5,
    "window_m": [
     463.0,
     488.0
    ],
    "width_at_max25_m": 2.5,
    "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": "Grignols",
  "county": "Dordogne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}