{
 "ocl_version": "0.1.0",
 "name": "Chemin de Giret",
 "slug": "chemin-de-giret",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 23.8888583802634,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 756.0,
   "end_distance_m": 758.0,
   "start_elevation_m": 677.1829631121899,
   "end_elevation_m": 677.6607402797952,
   "min_gradient_pct": -16.106592974335854
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 23.83173734808679,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 766.0,
   "end_distance_m": 769.0,
   "start_elevation_m": 679.346877592091,
   "end_elevation_m": 680.0618297125336,
   "min_gradient_pct": -16.006279354242753
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.377719755546877,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 764.0,
   "end_distance_m": 769.0,
   "start_elevation_m": 678.8929437247563,
   "end_elevation_m": 680.0618297125336,
   "min_gradient_pct": -15.744440536595903
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.568207341471407,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 761.0,
   "end_distance_m": 771.0,
   "start_elevation_m": 678.2326140978012,
   "end_elevation_m": 680.4894348319483,
   "min_gradient_pct": -14.994203903331709
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.950550316780436,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 752.0,
   "end_distance_m": 772.0,
   "start_elevation_m": 676.5096902562942,
   "end_elevation_m": 680.6998003196503,
   "min_gradient_pct": -12.999691231580641
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.062753511138,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 749.0,
   "end_distance_m": 774.0,
   "start_elevation_m": 676.032327538974,
   "end_elevation_m": 681.0480159167585,
   "min_gradient_pct": -12.105836581788026
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.77097901014031,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 724.0,
   "end_distance_m": 774.0,
   "start_elevation_m": 671.6625264116883,
   "end_elevation_m": 681.0480159167585,
   "min_gradient_pct": -9.45344751702055
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 13.996595982824374,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 710.0,
   "end_distance_m": 810.0,
   "start_elevation_m": 669.6518494274562,
   "end_elevation_m": 683.6484454102806,
   "min_gradient_pct": -6.583398343324802
  }
 ],
 "shape": {
  "ascent_concentration": 0.358,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 114.0,
  "shape_class": "sustained"
 },
 "length_m": 1853.3012842131857,
 "start_elevation_m": 627.1537182690474,
 "end_elevation_m": 764.7705783300667,
 "endpoint_gain_m": 137.61686006101922,
 "overall_gradient_pct": 7.4254985540272855,
 "accumulated_ascent_m": 147.70750882145933,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.377719755546877,
   "start_distance_m": 764.0,
   "end_distance_m": 769.0,
   "midpoint_distance_m": 766.5,
   "start_elevation_m": 678.8929437247563,
   "end_elevation_m": 680.0618297125336,
   "start_xy": [
    804076.365731446,
    6558837.990975788
   ],
   "end_xy": [
    804076.2810041514,
    6558842.962722921
   ]
  },
  "max_10m": {
   "gradient_pct": 22.568207341471407,
   "start_distance_m": 761.0,
   "end_distance_m": 771.0,
   "midpoint_distance_m": 766.0,
   "start_elevation_m": 678.2326140978012,
   "end_elevation_m": 680.4894348319483,
   "start_xy": [
    804076.1167658529,
    6558835.001324281
   ],
   "end_xy": [
    804076.0274333325,
    6558844.946583258
   ]
  },
  "max_20m": {
   "gradient_pct": 20.950550316780436,
   "start_distance_m": 752.0,
   "end_distance_m": 772.0,
   "midpoint_distance_m": 762.0,
   "start_elevation_m": 676.5096902562942,
   "end_elevation_m": 680.6998003196503,
   "start_xy": [
    804073.7728704144,
    6558826.34612973
   ],
   "end_xy": [
    804075.900647923,
    6558845.938513427
   ]
  },
  "max_25m": {
   "gradient_pct": 20.062753511138,
   "start_distance_m": 749.0,
   "end_distance_m": 774.0,
   "midpoint_distance_m": 761.5,
   "start_elevation_m": 676.032327538974,
   "end_elevation_m": 681.0480159167585,
   "start_xy": [
    804072.2181832691,
    6558823.800016562
   ],
   "end_xy": [
    804075.6470771041,
    6558847.922373765
   ]
  },
  "max_50m": {
   "gradient_pct": 18.77097901014031,
   "start_distance_m": 724.0,
   "end_distance_m": 774.0,
   "midpoint_distance_m": 749.0,
   "start_elevation_m": 671.6625264116883,
   "end_elevation_m": 681.0480159167585,
   "start_xy": [
    804055.5038058452,
    6558805.363895954
   ],
   "end_xy": [
    804075.6470771041,
    6558847.922373765
   ]
  },
  "max_100m": {
   "gradient_pct": 13.996595982824374,
   "start_distance_m": 710.0,
   "end_distance_m": 810.0,
   "midpoint_distance_m": 760.0,
   "start_elevation_m": 669.6518494274562,
   "end_elevation_m": 683.6484454102806,
   "start_xy": [
    804051.1693914791,
    6558792.457683939
   ],
   "end_xy": [
    804097.7802241275,
    6558874.519483228
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -15.744440536595903,
   "start_distance_m": 891.0,
   "end_distance_m": 896.0,
   "midpoint_distance_m": 893.5,
   "start_elevation_m": 684.8189162474343,
   "end_elevation_m": 684.0316942206045,
   "start_xy": [
    804170.9000928162,
    6558862.157883581
   ],
   "end_xy": [
    804174.7792439575,
    6558859.003174969
   ]
  },
  "min_10m": {
   "gradient_pct": -14.994203903331709,
   "start_distance_m": 890.0,
   "end_distance_m": 900.0,
   "midpoint_distance_m": 895.0,
   "start_elevation_m": 684.9631552678443,
   "end_elevation_m": 683.4637348775111,
   "start_xy": [
    804170.124262588,
    6558862.788825303
   ],
   "end_xy": [
    804177.8825648704,
    6558856.47940808
   ]
  },
  "min_20m": {
   "gradient_pct": -12.999691231580641,
   "start_distance_m": 885.0,
   "end_distance_m": 905.0,
   "midpoint_distance_m": 895.0,
   "start_elevation_m": 685.546764420064,
   "end_elevation_m": 682.9468261737479,
   "start_xy": [
    804166.2673453803,
    6558865.968788866
   ],
   "end_xy": [
    804181.7617160116,
    6558853.324699468
   ]
  },
  "min_25m": {
   "gradient_pct": -12.105836581788026,
   "start_distance_m": 883.0,
   "end_distance_m": 908.0,
   "midpoint_distance_m": 895.5,
   "start_elevation_m": 685.7207933641682,
   "end_elevation_m": 682.6943342187212,
   "start_xy": [
    804164.8190113631,
    6558867.348038145
   ],
   "end_xy": [
    804184.0892066963,
    6558851.431874301
   ]
  },
  "min_50m": {
   "gradient_pct": -9.45344751702055,
   "start_distance_m": 881.0,
   "end_distance_m": 931.0,
   "midpoint_distance_m": 906.0,
   "start_elevation_m": 685.832552495953,
   "end_elevation_m": 681.1058287374427,
   "start_xy": [
    804163.3706773459,
    6558868.727287425
   ],
   "end_xy": [
    804201.9333019457,
    6558836.920214688
   ]
  },
  "min_100m": {
   "gradient_pct": -6.583398343324802,
   "start_distance_m": 873.0,
   "end_distance_m": 973.0,
   "midpoint_distance_m": 923.0,
   "start_elevation_m": 686.1144162704849,
   "end_elevation_m": 679.5310179271601,
   "start_xy": [
    804157.5773412772,
    6558874.244284542
   ],
   "end_xy": [
    804233.6472181233,
    6558809.40392391
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 23.8888583802634,
   "start_distance_m": 756.0,
   "end_distance_m": 758.0,
   "midpoint_distance_m": 757.0,
   "start_elevation_m": 677.1829631121899,
   "end_elevation_m": 677.6607402797952,
   "start_xy": [
    804074.9737040992,
    6558830.161624255
   ],
   "end_xy": [
    804075.5741209417,
    6558832.069371517
   ]
  },
  "max_3m": {
   "gradient_pct": 23.83173734808679,
   "start_distance_m": 766.0,
   "end_distance_m": 769.0,
   "midpoint_distance_m": 767.5,
   "start_elevation_m": 679.346877592091,
   "end_elevation_m": 680.0618297125336,
   "start_xy": [
    804076.5317085079,
    6558839.984076792
   ],
   "end_xy": [
    804076.2810041514,
    6558842.962722921
   ]
  }
 },
 "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": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.226,
   "obstruction_max_height_m": 32.96,
   "flagged_windows_m": [
    2,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "076a8e7f889cfb3c2cf6b3de65a6030c7155b1f0",
   "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-mc7",
   "road_pbf": "block-batch-fr-mc7.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_E803-N6558_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E803-N6559_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E804-N6558_0m5@21LHD5NK-2025-02-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E804-N6559_0m5@21LHD5NK-2025-02-20.tif"
  ],
  "calculated_at": "2026-09-22T14:47:36+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc7.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc7",
  "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": [
   "E803-N6558",
   "E803-N6559",
   "E804-N6558",
   "E804-N6559"
  ],
  "elevation_blocks": [
   "21LHD5NK@2025-02-20"
  ],
  "ign_dalles": [
   "LHD_FXX_0803_6559_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0803_6560_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0804_6559_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0804_6560_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD5NK"
  ],
  "ign_editions": [
   "2025-02-20"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0803_6559_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0803_6560_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0804_6559_MNT_O_0M50_LAMB93_IGN69": "2025-02-20",
   "LHD_FXX_0804_6560_MNT_O_0M50_LAMB93_IGN69": "2025-02-20"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 7,
  "carriageway": {
   "stations": 81,
   "stations_resolved": 81,
   "width_median_m": 4.25,
   "width_p10_m": 2.75,
   "width_min_m": 2.0,
   "width_max_m": 12.0,
   "bounded_share": 0.407,
   "unbounded_share": 0.593,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.75,
   "window_m": [
    749.0,
    774.0
   ],
   "width_at_max25_m": 3.25,
   "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": 81,
    "stations_resolved": 81,
    "width_median_m": 4.5,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.79,
    "unbounded_share": 0.21,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.38,
    "window_m": [
     749.0,
     774.0
    ],
    "width_at_max25_m": 4.5,
    "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": "Cours",
  "county": "Rh\u00f4ne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}