{
 "ocl_version": "0.1.0",
 "name": "Route de Cayrac",
 "slug": "route-de-cayrac-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 28.407219833883346,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 163.0,
   "end_distance_m": 165.0,
   "start_elevation_m": 566.7185033526955,
   "end_elevation_m": 567.2866477493732,
   "min_gradient_pct": -2.34670888708024,
   "suppressed_max_gradient_pct": 82.08217472074466,
   "suppressed_location_m": [
    309.0,
    311.0
   ],
   "suppressed_min_gradient_pct": -112.65860435136119,
   "suppressed_min_location_m": [
    322.0,
    324.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.55611719136171,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 162.0,
   "end_distance_m": 165.0,
   "start_elevation_m": 566.5199642336323,
   "end_elevation_m": 567.2866477493732,
   "min_gradient_pct": -1.0121347012083486,
   "suppressed_max_gradient_pct": 81.8215495247235,
   "suppressed_location_m": [
    308.0,
    311.0
   ],
   "suppressed_min_gradient_pct": -93.24534854406845,
   "suppressed_min_location_m": [
    321.0,
    324.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.96421242748829,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 160.0,
   "end_distance_m": 165.0,
   "start_elevation_m": 566.0884371279988,
   "end_elevation_m": 567.2866477493732,
   "min_gradient_pct": -0.6143815409791387,
   "suppressed_max_gradient_pct": 73.74174764406007,
   "suppressed_location_m": [
    307.0,
    312.0
   ],
   "suppressed_min_gradient_pct": -57.06798234722328,
   "suppressed_min_location_m": [
    321.0,
    326.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.541719815909573,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 155.0,
   "end_distance_m": 165.0,
   "start_elevation_m": 565.0324757677822,
   "end_elevation_m": 567.2866477493732,
   "min_gradient_pct": -0.3446298876065157,
   "suppressed_max_gradient_pct": 45.4577556255299,
   "suppressed_location_m": [
    302.0,
    312.0
   ],
   "suppressed_min_gradient_pct": -25.322084223180354,
   "suppressed_min_location_m": [
    317.0,
    327.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.997769050545344,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 131.0,
   "end_distance_m": 151.0,
   "start_elevation_m": 559.887570289174,
   "end_elevation_m": 564.2871240992831,
   "min_gradient_pct": 0.4163336056700473,
   "suppressed_max_gradient_pct": 27.580505646652682,
   "suppressed_location_m": [
    292.0,
    312.0
   ],
   "suppressed_min_gradient_pct": -8.087611627201454,
   "suppressed_min_location_m": [
    312.0,
    332.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.828808272814513,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 140.0,
   "end_distance_m": 165.0,
   "start_elevation_m": 561.8294456811695,
   "end_elevation_m": 567.2866477493732,
   "min_gradient_pct": 0.8477329264114815,
   "suppressed_max_gradient_pct": 24.099878472877663,
   "suppressed_location_m": [
    287.0,
    312.0
   ],
   "suppressed_min_gradient_pct": -4.4557360602025256,
   "suppressed_min_location_m": [
    312.0,
    337.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.04170233337595,
   "diagnostic": false,
   "flags": [
    "structure_excluded_min",
    "canopy_or_structure"
   ],
   "start_distance_m": 193.0,
   "end_distance_m": 243.0,
   "start_elevation_m": 572.549456178055,
   "end_elevation_m": 583.070307344743,
   "min_gradient_pct": 2.616789815498123,
   "suppressed_min_gradient_pct": 2.4613256802379055,
   "suppressed_min_location_m": [
    312.0,
    362.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.697346910151055,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 137.0,
   "end_distance_m": 237.0,
   "start_elevation_m": 561.1549112691025,
   "end_elevation_m": 581.8522581792536,
   "min_gradient_pct": 3.8106600245076834
  }
 ],
 "shape": {
  "ascent_concentration": 0.419,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 191.0,
  "shape_class": "sustained"
 },
 "length_m": 541.6251929792033,
 "start_elevation_m": 543.1581686894485,
 "end_elevation_m": 605.6225557011617,
 "endpoint_gain_m": 62.46438701171314,
 "overall_gradient_pct": 11.53276986030293,
 "accumulated_ascent_m": 65.4787569941459,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.96421242748829,
   "start_distance_m": 160.0,
   "end_distance_m": 165.0,
   "midpoint_distance_m": 162.5,
   "start_elevation_m": 566.0884371279988,
   "end_elevation_m": 567.2866477493732,
   "start_xy": [
    690912.4675330424,
    6382069.528161953
   ],
   "end_xy": [
    690912.5643115056,
    6382074.527225258
   ]
  },
  "max_10m": {
   "gradient_pct": 22.541719815909573,
   "start_distance_m": 155.0,
   "end_distance_m": 165.0,
   "midpoint_distance_m": 160.0,
   "start_elevation_m": 565.0324757677822,
   "end_elevation_m": 567.2866477493732,
   "start_xy": [
    690912.1574944054,
    6382064.545113583
   ],
   "end_xy": [
    690912.5643115056,
    6382074.527225258
   ]
  },
  "max_20m": {
   "gradient_pct": 21.997769050545344,
   "start_distance_m": 131.0,
   "end_distance_m": 151.0,
   "midpoint_distance_m": 141.0,
   "start_elevation_m": 559.887570289174,
   "end_elevation_m": 564.2871240992831,
   "start_xy": [
    690908.6363865244,
    6382040.807557078
   ],
   "end_xy": [
    690911.6367636208,
    6382060.579153491
   ]
  },
  "max_25m": {
   "gradient_pct": 21.828808272814513,
   "start_distance_m": 140.0,
   "end_distance_m": 165.0,
   "midpoint_distance_m": 152.5,
   "start_elevation_m": 561.8294456811695,
   "end_elevation_m": 567.2866477493732,
   "start_xy": [
    690910.0728457753,
    6382049.692093708
   ],
   "end_xy": [
    690912.5643115056,
    6382074.527225258
   ]
  },
  "max_50m": {
   "gradient_pct": 21.04170233337595,
   "start_distance_m": 193.0,
   "end_distance_m": 243.0,
   "midpoint_distance_m": 218.0,
   "start_elevation_m": 572.549456178055,
   "end_elevation_m": 583.070307344743,
   "start_xy": [
    690908.4749185377,
    6382101.699165449
   ],
   "end_xy": [
    690885.6227989009,
    6382145.664974094
   ]
  },
  "max_100m": {
   "gradient_pct": 20.697346910151055,
   "start_distance_m": 137.0,
   "end_distance_m": 237.0,
   "midpoint_distance_m": 187.0,
   "start_elevation_m": 561.1549112691025,
   "end_elevation_m": 581.8522581792536,
   "start_xy": [
    690909.5935138137,
    6382046.730634461
   ],
   "end_xy": [
    690887.1784551559,
    6382139.870154545
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.6143815409791387,
   "start_distance_m": 499.0,
   "end_distance_m": 504.0,
   "midpoint_distance_m": 501.5,
   "start_elevation_m": 603.7382417331347,
   "end_elevation_m": 603.7075226560858,
   "start_xy": [
    690890.7499017488,
    6382312.320937911
   ],
   "end_xy": [
    690895.6138392735,
    6382313.479433382
   ]
  },
  "min_10m": {
   "gradient_pct": -0.3446298876065157,
   "start_distance_m": 495.0,
   "end_distance_m": 505.0,
   "midpoint_distance_m": 500.0,
   "start_elevation_m": 603.7397541191884,
   "end_elevation_m": 603.7052911304278,
   "start_xy": [
    690886.8587517292,
    6382311.394141534
   ],
   "end_xy": [
    690896.4756035759,
    6382313.899573447
   ]
  },
  "min_20m": {
   "gradient_pct": 0.4163336056700473,
   "start_distance_m": 487.0,
   "end_distance_m": 507.0,
   "midpoint_distance_m": 497.0,
   "start_elevation_m": 603.6523111827656,
   "end_elevation_m": 603.7355779038996,
   "start_xy": [
    690879.0515790523,
    6382309.7049836395
   ],
   "end_xy": [
    690897.8238667132,
    6382315.376796015
   ]
  },
  "min_25m": {
   "gradient_pct": 0.8477329264114815,
   "start_distance_m": 483.0,
   "end_distance_m": 508.0,
   "midpoint_distance_m": 495.5,
   "start_elevation_m": 603.5497549106383,
   "end_elevation_m": 603.7616881422412,
   "start_xy": [
    690875.0603997495,
    6382309.439488304
   ],
   "end_xy": [
    690898.4979982818,
    6382316.115407298
   ]
  },
  "min_50m": {
   "gradient_pct": 2.616789815498123,
   "start_distance_m": 476.0,
   "end_distance_m": 526.0,
   "midpoint_distance_m": 501.0,
   "start_elevation_m": 603.2623984319858,
   "end_elevation_m": 604.5707933397349,
   "start_xy": [
    690868.0758359696,
    6382308.974871468
   ],
   "end_xy": [
    690910.7352100435,
    6382329.314659245
   ]
  },
  "min_100m": {
   "gradient_pct": 3.8106600245076834,
   "start_distance_m": 435.0,
   "end_distance_m": 535.0,
   "midpoint_distance_m": 485.0,
   "start_elevation_m": 601.2738440342907,
   "end_elevation_m": 605.0845040587984,
   "start_xy": [
    690832.5009899616,
    6382317.405273804
   ],
   "end_xy": [
    690916.9329765695,
    6382335.840583708
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 28.407219833883346,
   "start_distance_m": 163.0,
   "end_distance_m": 165.0,
   "midpoint_distance_m": 164.0,
   "start_elevation_m": 566.7185033526955,
   "end_elevation_m": 567.2866477493732,
   "start_xy": [
    690912.5256001203,
    6382072.527599936
   ],
   "end_xy": [
    690912.5643115056,
    6382074.527225258
   ]
  },
  "max_3m": {
   "gradient_pct": 25.55611719136171,
   "start_distance_m": 162.0,
   "end_distance_m": 165.0,
   "midpoint_distance_m": 163.5,
   "start_elevation_m": 566.5199642336323,
   "end_elevation_m": 567.2866477493732,
   "start_xy": [
    690912.5062444278,
    6382071.527787275
   ],
   "end_xy": [
    690912.5643115056,
    6382074.527225258
   ]
  }
 },
 "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": 0.03,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0
   ],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.33,
   "obstruction_max_height_m": 24.17,
   "flagged_windows_m": [
    20,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    306.0,
    314.0
   ],
   [
    320.0,
    326.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "1cc9fdcd6556a02163cb21acb2293cad3067d2a1",
   "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-mc4",
   "road_pbf": "block-batch-fr-mc4.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:af4eae1f5df9e232"
  },
  "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_E690-N6381_0m5@21LHD4LO-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E690-N6382_0m5@21LHD4LO-2024-12-13.tif"
  ],
  "calculated_at": "2026-09-22T16:54:07+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc4.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc4",
  "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": [
   "E690-N6381",
   "E690-N6382"
  ],
  "elevation_blocks": [
   "21LHD4LO@2024-12-13"
  ],
  "ign_dalles": [
   "LHD_FXX_0690_6382_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0690_6383_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD4LO"
  ],
  "ign_editions": [
   "2024-12-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0690_6382_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0690_6383_MNT_O_0M50_LAMB93_IGN69": "2024-12-13"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 4,
  "carriageway": {
   "stations": 27,
   "stations_resolved": 27,
   "width_median_m": 5.0,
   "width_p10_m": 3.75,
   "width_min_m": 2.5,
   "width_max_m": 12.0,
   "bounded_share": 0.556,
   "unbounded_share": 0.444,
   "confidence_median": 0.543,
   "width_median_bounded_m": 4.75,
   "window_m": [
    140.0,
    165.0
   ],
   "width_at_max25_m": 4.5,
   "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": 27,
    "stations_resolved": 27,
    "width_median_m": 3.5,
    "width_p10_m": 1.15,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.963,
    "unbounded_share": 0.037,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.5,
    "window_m": [
     140.0,
     165.0
    ],
    "width_at_max25_m": 4.0,
    "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": "Castelnau-de-Mandailles",
  "county": "Aveyron",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}