{
 "ocl_version": "0.1.0",
 "name": "Chemin de Saint-Sauveur",
 "slug": "chemin-de-saint-sauveur",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 30.274769348980612,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 510.0,
   "end_distance_m": 512.0,
   "start_elevation_m": 314.62861057721346,
   "end_elevation_m": 315.2341059641931,
   "min_gradient_pct": -6.106622989867105
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.64221887005836,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 200.0,
   "end_distance_m": 203.0,
   "start_elevation_m": 280.3976655946273,
   "end_elevation_m": 281.22693216072906,
   "min_gradient_pct": -2.91355662635245
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.357083020816162,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 200.0,
   "end_distance_m": 205.0,
   "start_elevation_m": 280.3976655946273,
   "end_elevation_m": 281.6655197456681,
   "min_gradient_pct": -1.6023253785783709
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.362353099755637,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 223.0,
   "end_distance_m": 233.0,
   "start_elevation_m": 283.9611834384534,
   "end_elevation_m": 286.297418748429,
   "min_gradient_pct": -0.9280575240325106
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.335759325235415,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 224.0,
   "end_distance_m": 244.0,
   "start_elevation_m": 284.14164004187927,
   "end_elevation_m": 288.40879190692635,
   "min_gradient_pct": -0.44446417844739017
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.044511847882177,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 224.0,
   "end_distance_m": 249.0,
   "start_elevation_m": 284.14164004187927,
   "end_elevation_m": 289.4027680038498,
   "min_gradient_pct": -0.44822267716403985
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.43186157749176,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 200.0,
   "end_distance_m": 250.0,
   "start_elevation_m": 280.3976655946273,
   "end_elevation_m": 289.6135963833732,
   "min_gradient_pct": 0.8877747515776946
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.591620410389964,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 159.0,
   "end_distance_m": 259.0,
   "start_elevation_m": 274.61718922994555,
   "end_elevation_m": 291.2088096403355,
   "min_gradient_pct": 3.192465819948552
  }
 ],
 "shape": {
  "ascent_concentration": 0.366,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 147.0,
  "shape_class": "sustained"
 },
 "length_m": 536.2079812706797,
 "start_elevation_m": 265.2688427817735,
 "end_elevation_m": 319.0973835857781,
 "endpoint_gain_m": 53.828540804004604,
 "overall_gradient_pct": 10.038742928899405,
 "accumulated_ascent_m": 54.65519792024509,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.357083020816162,
   "start_distance_m": 200.0,
   "end_distance_m": 205.0,
   "midpoint_distance_m": 202.5,
   "start_elevation_m": 280.3976655946273,
   "end_elevation_m": 281.6655197456681,
   "start_xy": [
    950672.041943714,
    6259038.469315241
   ],
   "end_xy": [
    950667.2419738551,
    6259039.869418577
   ]
  },
  "max_10m": {
   "gradient_pct": 23.362353099755637,
   "start_distance_m": 223.0,
   "end_distance_m": 233.0,
   "midpoint_distance_m": 228.0,
   "start_elevation_m": 283.9611834384534,
   "end_elevation_m": 286.297418748429,
   "start_xy": [
    950653.4573884679,
    6259046.890329168
   ],
   "end_xy": [
    950655.9889480589,
    6259056.564583974
   ]
  },
  "max_20m": {
   "gradient_pct": 21.335759325235415,
   "start_distance_m": 224.0,
   "end_distance_m": 244.0,
   "midpoint_distance_m": 234.0,
   "start_elevation_m": 284.14164004187927,
   "end_elevation_m": 288.40879190692635,
   "start_xy": [
    950653.7105444269,
    6259047.857754649
   ],
   "end_xy": [
    950658.773663609,
    6259067.206264259
   ]
  },
  "max_25m": {
   "gradient_pct": 21.044511847882177,
   "start_distance_m": 224.0,
   "end_distance_m": 249.0,
   "midpoint_distance_m": 236.5,
   "start_elevation_m": 284.14164004187927,
   "end_elevation_m": 289.4027680038498,
   "start_xy": [
    950653.7105444269,
    6259047.857754649
   ],
   "end_xy": [
    950660.0394434045,
    6259072.043391662
   ]
  },
  "max_50m": {
   "gradient_pct": 18.43186157749176,
   "start_distance_m": 200.0,
   "end_distance_m": 250.0,
   "midpoint_distance_m": 225.0,
   "start_elevation_m": 280.3976655946273,
   "end_elevation_m": 289.6135963833732,
   "start_xy": [
    950672.041943714,
    6259038.469315241
   ],
   "end_xy": [
    950660.2925993637,
    6259073.010817143
   ]
  },
  "max_100m": {
   "gradient_pct": 16.591620410389964,
   "start_distance_m": 159.0,
   "end_distance_m": 259.0,
   "midpoint_distance_m": 209.0,
   "start_elevation_m": 274.61718922994555,
   "end_elevation_m": 291.2088096403355,
   "start_xy": [
    950682.3568723382,
    6259007.17422691
   ],
   "end_xy": [
    950667.2842265015,
    6259078.231412603
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.6023253785783709,
   "start_distance_m": 3.0,
   "end_distance_m": 8.0,
   "midpoint_distance_m": 5.5,
   "start_elevation_m": 265.38856949522403,
   "end_elevation_m": 265.3084532262951,
   "start_xy": [
    950646.052194884,
    6258934.045987535
   ],
   "end_xy": [
    950651.010853024,
    6258934.687633428
   ]
  },
  "min_10m": {
   "gradient_pct": -0.9280575240325106,
   "start_distance_m": 349.0,
   "end_distance_m": 359.0,
   "midpoint_distance_m": 354.0,
   "start_elevation_m": 295.9539865922778,
   "end_elevation_m": 295.8611808398745,
   "start_xy": [
    950633.1577854689,
    6259105.959137356
   ],
   "end_xy": [
    950623.309998473,
    6259107.697266029
   ]
  },
  "min_20m": {
   "gradient_pct": -0.44446417844739017,
   "start_distance_m": 335.0,
   "end_distance_m": 355.0,
   "midpoint_distance_m": 345.0,
   "start_elevation_m": 295.97310229499095,
   "end_elevation_m": 295.8842094593015,
   "start_xy": [
    950646.944687263,
    6259103.525757213
   ],
   "end_xy": [
    950627.2491132714,
    6259107.00201456
   ]
  },
  "min_25m": {
   "gradient_pct": -0.44822267716403985,
   "start_distance_m": 335.0,
   "end_distance_m": 360.0,
   "midpoint_distance_m": 347.5,
   "start_elevation_m": 295.97310229499095,
   "end_elevation_m": 295.86104662569994,
   "start_xy": [
    950646.944687263,
    6259103.525757213
   ],
   "end_xy": [
    950622.3252197735,
    6259107.871078896
   ]
  },
  "min_50m": {
   "gradient_pct": 0.8877747515776946,
   "start_distance_m": 316.0,
   "end_distance_m": 366.0,
   "midpoint_distance_m": 341.0,
   "start_elevation_m": 295.5521152892638,
   "end_elevation_m": 295.99600266505263,
   "start_xy": [
    950665.1701132155,
    6259098.326693329
   ],
   "end_xy": [
    950617.6338940511,
    6259111.130211122
   ]
  },
  "min_100m": {
   "gradient_pct": 3.192465819948552,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 265.2688427817735,
   "end_elevation_m": 268.46130860172207,
   "start_xy": [
    950643.077,
    6258933.661
   ],
   "end_xy": [
    950716.1140806082,
    6258973.323781889
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 30.274769348980612,
   "start_distance_m": 510.0,
   "end_distance_m": 512.0,
   "midpoint_distance_m": 511.0,
   "start_elevation_m": 314.62861057721346,
   "end_elevation_m": 315.2341059641931,
   "start_xy": [
    950516.1397061069,
    6259211.057076192
   ],
   "end_xy": [
    950514.6952583387,
    6259212.440394899
   ]
  },
  "max_3m": {
   "gradient_pct": 27.64221887005836,
   "start_distance_m": 200.0,
   "end_distance_m": 203.0,
   "midpoint_distance_m": 201.5,
   "start_elevation_m": 280.3976655946273,
   "end_elevation_m": 281.22693216072906,
   "start_xy": [
    950672.041943714,
    6259038.469315241
   ],
   "end_xy": [
    950669.1619617987,
    6259039.309377243
   ]
  }
 },
 "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": 0.283,
   "obstruction_max_height_m": 11.18,
   "flagged_windows_m": [
    2,
    5
   ]
  },
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "41205ec4649bb0a4093af76ff34281a5d9a13832",
   "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-pr6",
   "road_pbf": "block-batch-fr-pr6.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:ba95a0bf562c86eb"
  },
  "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_E950-N6258_0m5@22LHD6QQ-2025-03-24.tif",
   "data/cache/fr/ign-lidarhd_dtm_E950-N6259_0m5@22LHD6QQ-2025-03-24.tif"
  ],
  "calculated_at": "2026-09-25T09:15:40+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pr6.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pr6",
  "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": [
   "E950-N6258",
   "E950-N6259"
  ],
  "elevation_blocks": [
   "22LHD6QQ@2025-03-24"
  ],
  "ign_dalles": [
   "LHD_FXX_0950_6259_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0950_6260_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD6QQ"
  ],
  "ign_editions": [
   "2025-03-24"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0950_6259_MNT_O_0M50_LAMB93_IGN69": "2025-03-24",
   "LHD_FXX_0950_6260_MNT_O_0M50_LAMB93_IGN69": "2025-03-24"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 8,
  "carriageway": {
   "stations": 28,
   "stations_resolved": 28,
   "width_median_m": 4.75,
   "width_p10_m": 2.17,
   "width_min_m": 1.5,
   "width_max_m": 9.75,
   "bounded_share": 0.179,
   "unbounded_share": 0.821,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.0,
   "window_m": [
    224.0,
    249.0
   ],
   "width_at_max25_m": 5.0,
   "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": 28,
    "stations_resolved": 28,
    "width_median_m": 3.12,
    "width_p10_m": 1.18,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.857,
    "unbounded_share": 0.143,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.0,
    "window_m": [
     224.0,
     249.0
    ],
    "width_at_max25_m": 4.75,
    "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": "Camps-la-Source",
  "county": "Var",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}