{
 "ocl_version": "0.1.0",
 "name": "Rue de la Roche",
 "slug": "rue-de-la-roche",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 31.803001805826625,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1737.0,
   "end_distance_m": 1739.0,
   "start_elevation_m": 996.8947964732808,
   "end_elevation_m": 997.5308565093974,
   "min_gradient_pct": -35.23113240050861
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 30.38672815496663,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1737.0,
   "end_distance_m": 1740.0,
   "start_elevation_m": 996.8947964732808,
   "end_elevation_m": 997.8063983179298,
   "min_gradient_pct": -27.70270723502411
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.62126104873505,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1730.0,
   "end_distance_m": 1735.0,
   "start_elevation_m": 995.3656654672068,
   "end_elevation_m": 996.5967285196435,
   "min_gradient_pct": -16.16629389051468
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.40732850723066,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1730.0,
   "end_distance_m": 1740.0,
   "start_elevation_m": 995.3656654672068,
   "end_elevation_m": 997.8063983179298,
   "min_gradient_pct": -8.451554298716246
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.372596165957702,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1728.0,
   "end_distance_m": 1748.0,
   "start_elevation_m": 995.0303901921934,
   "end_elevation_m": 999.304909425385,
   "min_gradient_pct": -5.406021574868305
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.55536222538649,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1730.0,
   "end_distance_m": 1755.0,
   "start_elevation_m": 995.3656654672068,
   "end_elevation_m": 1000.5045060235534,
   "min_gradient_pct": -4.655670108243157
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.223778324090063,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1718.0,
   "end_distance_m": 1768.0,
   "start_elevation_m": 993.2325146659886,
   "end_elevation_m": 1002.8444038280336,
   "min_gradient_pct": -2.6843990918277996
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.772563107213387,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1697.0,
   "end_distance_m": 1797.0,
   "start_elevation_m": 989.6998484394086,
   "end_elevation_m": 1007.472411546622,
   "min_gradient_pct": 0.04052213451927855
  }
 ],
 "shape": {
  "ascent_concentration": 0.308,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 213.0,
  "shape_class": "sustained"
 },
 "length_m": 2322.1028670067985,
 "start_elevation_m": 841.4630364150221,
 "end_elevation_m": 1056.4411276054627,
 "endpoint_gain_m": 214.97809119044064,
 "overall_gradient_pct": 9.257905592595405,
 "accumulated_ascent_m": 218.84282369899222,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.62126104873505,
   "start_distance_m": 1730.0,
   "end_distance_m": 1735.0,
   "midpoint_distance_m": 1732.5,
   "start_elevation_m": 995.3656654672068,
   "end_elevation_m": 996.5967285196435,
   "start_xy": [
    775825.1902926253,
    6419238.968529805
   ],
   "end_xy": [
    775822.9392356857,
    6419243.433139827
   ]
  },
  "max_10m": {
   "gradient_pct": 24.40732850723066,
   "start_distance_m": 1730.0,
   "end_distance_m": 1740.0,
   "midpoint_distance_m": 1735.0,
   "start_elevation_m": 995.3656654672068,
   "end_elevation_m": 997.8063983179298,
   "start_xy": [
    775825.1902926253,
    6419238.968529805
   ],
   "end_xy": [
    775821.0292345698,
    6419248.023082202
   ]
  },
  "max_20m": {
   "gradient_pct": 21.372596165957702,
   "start_distance_m": 1728.0,
   "end_distance_m": 1748.0,
   "midpoint_distance_m": 1738.0,
   "start_elevation_m": 995.0303901921934,
   "end_elevation_m": 999.304909425385,
   "start_xy": [
    775826.0907154012,
    6419237.182685795
   ],
   "end_xy": [
    775819.1483912539,
    6419255.798841227
   ]
  },
  "max_25m": {
   "gradient_pct": 20.55536222538649,
   "start_distance_m": 1730.0,
   "end_distance_m": 1755.0,
   "midpoint_distance_m": 1742.5,
   "start_elevation_m": 995.3656654672068,
   "end_elevation_m": 1000.5045060235534,
   "start_xy": [
    775825.1902926253,
    6419238.968529805
   ],
   "end_xy": [
    775817.5026533525,
    6419262.602630375
   ]
  },
  "max_50m": {
   "gradient_pct": 19.223778324090063,
   "start_distance_m": 1718.0,
   "end_distance_m": 1768.0,
   "midpoint_distance_m": 1743.0,
   "start_elevation_m": 993.2325146659886,
   "end_elevation_m": 1002.8444038280336,
   "start_xy": [
    775830.5928292803,
    6419228.253465749
   ],
   "end_xy": [
    775814.4462829642,
    6419275.238238791
   ]
  },
  "max_100m": {
   "gradient_pct": 17.772563107213387,
   "start_distance_m": 1697.0,
   "end_distance_m": 1797.0,
   "midpoint_distance_m": 1747.0,
   "start_elevation_m": 989.6998484394086,
   "end_elevation_m": 1007.472411546622,
   "start_xy": [
    775840.0472684264,
    6419209.502103655
   ],
   "end_xy": [
    775820.1091531664,
    6419303.619836241
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -16.16629389051468,
   "start_distance_m": 909.0,
   "end_distance_m": 914.0,
   "midpoint_distance_m": 911.5,
   "start_elevation_m": 923.117170799841,
   "end_elevation_m": 922.3088561053153,
   "start_xy": [
    776136.1477802595,
    6418996.046191695
   ],
   "end_xy": [
    776133.2273521367,
    6418999.346419824
   ]
  },
  "min_10m": {
   "gradient_pct": -8.451554298716246,
   "start_distance_m": 904.0,
   "end_distance_m": 914.0,
   "midpoint_distance_m": 909.0,
   "start_elevation_m": 923.1540115351869,
   "end_elevation_m": 922.3088561053153,
   "start_xy": [
    776137.2398847105,
    6418991.166918402
   ],
   "end_xy": [
    776133.2273521367,
    6418999.346419824
   ]
  },
  "min_20m": {
   "gradient_pct": -5.406021574868305,
   "start_distance_m": 876.0,
   "end_distance_m": 896.0,
   "midpoint_distance_m": 886.0,
   "start_elevation_m": 924.2959255596238,
   "end_elevation_m": 923.2147212446501,
   "start_xy": [
    776139.7069888486,
    6418963.537236393
   ],
   "end_xy": [
    776138.6479260823,
    6418983.304237512
   ]
  },
  "min_25m": {
   "gradient_pct": -4.655670108243157,
   "start_distance_m": 876.0,
   "end_distance_m": 901.0,
   "midpoint_distance_m": 888.5,
   "start_elevation_m": 924.2959255596238,
   "end_elevation_m": 923.132008032563,
   "start_xy": [
    776139.7069888486,
    6418963.537236393
   ],
   "end_xy": [
    776137.8951473812,
    6418988.239354426
   ]
  },
  "min_50m": {
   "gradient_pct": -2.6843990918277996,
   "start_distance_m": 864.0,
   "end_distance_m": 914.0,
   "midpoint_distance_m": 889.0,
   "start_elevation_m": 923.6510556512292,
   "end_elevation_m": 922.3088561053153,
   "start_xy": [
    776135.5089451745,
    6418952.3334786445
   ],
   "end_xy": [
    776133.2273521367,
    6418999.346419824
   ]
  },
  "min_100m": {
   "gradient_pct": 0.04052213451927855,
   "start_distance_m": 1511.0,
   "end_distance_m": 1611.0,
   "midpoint_distance_m": 1561.0,
   "start_elevation_m": 979.8137520033689,
   "end_elevation_m": 979.8542741378882,
   "start_xy": [
    775772.0617082808,
    6419064.2557626255
   ],
   "end_xy": [
    775844.175399428,
    6419133.359013771
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 31.803001805826625,
   "start_distance_m": 1737.0,
   "end_distance_m": 1739.0,
   "midpoint_distance_m": 1738.0,
   "start_elevation_m": 996.8947964732808,
   "end_elevation_m": 997.5308565093974,
   "start_xy": [
    775822.03881291,
    6419245.218983836
   ],
   "end_xy": [
    775821.2643399842,
    6419247.051112324
   ]
  },
  "max_3m": {
   "gradient_pct": 30.38672815496663,
   "start_distance_m": 1737.0,
   "end_distance_m": 1740.0,
   "midpoint_distance_m": 1738.5,
   "start_elevation_m": 996.8947964732808,
   "end_elevation_m": 997.8063983179298,
   "start_xy": [
    775822.03881291,
    6419245.218983836
   ],
   "end_xy": [
    775821.0292345698,
    6419248.023082202
   ]
  }
 },
 "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": 0.045,
   "obstruction_max_height_m": 19.21,
   "flagged_windows_m": [
    2,
    3,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "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-mc6",
   "road_pbf": "block-batch-fr-mc6.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_E775-N6418_0m5@21LHD4MN-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E775-N6419_0m5@21LHD4MN-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E776-N6418_0m5@21LHD4MN-2024-12-13.tif",
   "data/cache/fr/ign-lidarhd_dtm_E776-N6419_0m5@21LHD4MN-2024-12-13.tif"
  ],
  "calculated_at": "2026-09-22T15:33:44+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc6.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc6",
  "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": [
   "E775-N6418",
   "E775-N6419",
   "E776-N6418",
   "E776-N6419"
  ],
  "elevation_blocks": [
   "21LHD4MN@2024-12-13"
  ],
  "ign_dalles": [
   "LHD_FXX_0775_6419_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0775_6420_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0776_6419_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0776_6420_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD4MN"
  ],
  "ign_editions": [
   "2024-12-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0775_6419_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0775_6420_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0776_6419_MNT_O_0M50_LAMB93_IGN69": "2024-12-13",
   "LHD_FXX_0776_6420_MNT_O_0M50_LAMB93_IGN69": "2024-12-13"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 7,
  "carriageway": {
   "stations": 98,
   "stations_resolved": 98,
   "width_median_m": 5.25,
   "width_p10_m": 3.75,
   "width_min_m": 1.25,
   "width_max_m": 12.0,
   "bounded_share": 0.337,
   "unbounded_share": 0.663,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.0,
   "window_m": [
    1730.0,
    1755.0
   ],
   "width_at_max25_m": 5.38,
   "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": 98,
    "stations_resolved": 98,
    "width_median_m": 7.38,
    "width_p10_m": 3.85,
    "width_min_m": 1.25,
    "width_max_m": 12.0,
    "bounded_share": 0.673,
    "unbounded_share": 0.327,
    "confidence_median": 1.0,
    "width_median_bounded_m": 6.5,
    "window_m": [
     1730.0,
     1755.0
    ],
    "width_at_max25_m": 7.0,
    "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": "Salettes",
  "county": "Haute-Loire",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}