{
 "ocl_version": "0.1.0",
 "name": "Chemin de la C\u00f4te",
 "slug": "chemin-de-la-cote",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 29.73583845916039,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 165.0,
   "end_distance_m": 167.0,
   "start_elevation_m": 476.83644182682633,
   "end_elevation_m": 477.43115859600954,
   "min_gradient_pct": -7.752233443699197
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 28.607648395923963,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 164.0,
   "end_distance_m": 167.0,
   "start_elevation_m": 476.5729291441318,
   "end_elevation_m": 477.43115859600954,
   "min_gradient_pct": -7.072198740504139
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.924881114848404,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 162.0,
   "end_distance_m": 167.0,
   "start_elevation_m": 476.1349145402671,
   "end_elevation_m": 477.43115859600954,
   "min_gradient_pct": -6.2185119903006125
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.145725657324988,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 162.0,
   "end_distance_m": 172.0,
   "start_elevation_m": 476.1349145402671,
   "end_elevation_m": 478.5494871059996,
   "min_gradient_pct": -5.893398125076033
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.973769550771124,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 150.0,
   "end_distance_m": 170.0,
   "start_elevation_m": 473.5252743747743,
   "end_elevation_m": 478.12002828492854,
   "min_gradient_pct": -4.948587445682051
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.378504824942866,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 145.0,
   "end_distance_m": 170.0,
   "start_elevation_m": 472.5254020786928,
   "end_elevation_m": 478.12002828492854,
   "min_gradient_pct": -4.72667667945484
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.229315941847176,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 150.0,
   "end_distance_m": 200.0,
   "start_elevation_m": 473.5252743747743,
   "end_elevation_m": 483.6399323456979,
   "min_gradient_pct": -3.536653672385569
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.808583751577714,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 117.0,
   "end_distance_m": 217.0,
   "start_elevation_m": 467.92004020235026,
   "end_elevation_m": 486.728623953928,
   "min_gradient_pct": -1.9133983869865006
  }
 ],
 "shape": {
  "ascent_concentration": 0.582,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 175.0,
  "shape_class": "stepped"
 },
 "length_m": 542.629839733465,
 "start_elevation_m": 455.79771817016695,
 "end_elevation_m": 493.613445864862,
 "endpoint_gain_m": 37.815727694695056,
 "overall_gradient_pct": 6.96897312415952,
 "accumulated_ascent_m": 40.12157396785096,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.924881114848404,
   "start_distance_m": 162.0,
   "end_distance_m": 167.0,
   "midpoint_distance_m": 164.5,
   "start_elevation_m": 476.1349145402671,
   "end_elevation_m": 477.43115859600954,
   "start_xy": [
    793709.383060287,
    6530157.803095614
   ],
   "end_xy": [
    793704.5277954144,
    6530158.997416767
   ]
  },
  "max_10m": {
   "gradient_pct": 24.145725657324988,
   "start_distance_m": 162.0,
   "end_distance_m": 172.0,
   "midpoint_distance_m": 167.0,
   "start_elevation_m": 476.1349145402671,
   "end_elevation_m": 478.5494871059996,
   "start_xy": [
    793709.383060287,
    6530157.803095614
   ],
   "end_xy": [
    793699.672530542,
    6530160.191737921
   ]
  },
  "max_20m": {
   "gradient_pct": 22.973769550771124,
   "start_distance_m": 150.0,
   "end_distance_m": 170.0,
   "midpoint_distance_m": 160.0,
   "start_elevation_m": 473.5252743747743,
   "end_elevation_m": 478.12002828492854,
   "start_xy": [
    793721.0007422995,
    6530154.832112248
   ],
   "end_xy": [
    793701.614636491,
    6530159.714009459
   ]
  },
  "max_25m": {
   "gradient_pct": 22.378504824942866,
   "start_distance_m": 145.0,
   "end_distance_m": 170.0,
   "midpoint_distance_m": 157.5,
   "start_elevation_m": 472.5254020786928,
   "end_elevation_m": 478.12002828492854,
   "start_xy": [
    793725.598753246,
    6530152.86785785
   ],
   "end_xy": [
    793701.614636491,
    6530159.714009459
   ]
  },
  "max_50m": {
   "gradient_pct": 20.229315941847176,
   "start_distance_m": 150.0,
   "end_distance_m": 200.0,
   "midpoint_distance_m": 175.0,
   "start_elevation_m": 473.5252743747743,
   "end_elevation_m": 483.6399323456979,
   "start_xy": [
    793721.0007422995,
    6530154.832112248
   ],
   "end_xy": [
    793674.2262113594,
    6530171.215869007
   ]
  },
  "max_100m": {
   "gradient_pct": 18.808583751577714,
   "start_distance_m": 117.0,
   "end_distance_m": 217.0,
   "midpoint_distance_m": 167.0,
   "start_elevation_m": 467.92004020235026,
   "end_elevation_m": 486.728623953928,
   "start_xy": [
    793751.3476145461,
    6530141.8680332275
   ],
   "end_xy": [
    793661.5772838406,
    6530182.192535902
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -6.2185119903006125,
   "start_distance_m": 280.0,
   "end_distance_m": 285.0,
   "midpoint_distance_m": 282.5,
   "start_elevation_m": 490.4047409345694,
   "end_elevation_m": 490.0938153350544,
   "start_xy": [
    793610.9663072202,
    6530218.1902554855
   ],
   "end_xy": [
    793606.7754300786,
    6530220.917259113
   ]
  },
  "min_10m": {
   "gradient_pct": -5.893398125076033,
   "start_distance_m": 280.0,
   "end_distance_m": 290.0,
   "midpoint_distance_m": 285.0,
   "start_elevation_m": 490.4047409345694,
   "end_elevation_m": 489.8154011220618,
   "start_xy": [
    793610.9663072202,
    6530218.1902554855
   ],
   "end_xy": [
    793602.584552937,
    6530223.64426274
   ]
  },
  "min_20m": {
   "gradient_pct": -4.948587445682051,
   "start_distance_m": 280.0,
   "end_distance_m": 300.0,
   "midpoint_distance_m": 290.0,
   "start_elevation_m": 490.4047409345694,
   "end_elevation_m": 489.415023445433,
   "start_xy": [
    793610.9663072202,
    6530218.1902554855
   ],
   "end_xy": [
    793594.2027986537,
    6530229.098269994
   ]
  },
  "min_25m": {
   "gradient_pct": -4.72667667945484,
   "start_distance_m": 280.0,
   "end_distance_m": 305.0,
   "midpoint_distance_m": 292.5,
   "start_elevation_m": 490.4047409345694,
   "end_elevation_m": 489.2230717647057,
   "start_xy": [
    793610.9663072202,
    6530218.1902554855
   ],
   "end_xy": [
    793590.0119215122,
    6530231.825273622
   ]
  },
  "min_50m": {
   "gradient_pct": -3.536653672385569,
   "start_distance_m": 280.0,
   "end_distance_m": 330.0,
   "midpoint_distance_m": 305.0,
   "start_elevation_m": 490.4047409345694,
   "end_elevation_m": 488.63641409837663,
   "start_xy": [
    793610.9663072202,
    6530218.1902554855
   ],
   "end_xy": [
    793569.0575358042,
    6530245.460291759
   ]
  },
  "min_100m": {
   "gradient_pct": -1.9133983869865006,
   "start_distance_m": 279.0,
   "end_distance_m": 379.0,
   "midpoint_distance_m": 329.0,
   "start_elevation_m": 490.4172453376173,
   "end_elevation_m": 488.5038469506308,
   "start_xy": [
    793611.8315788524,
    6530217.689945762
   ],
   "end_xy": [
    793528.1550572375,
    6530272.4415208
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 29.73583845916039,
   "start_distance_m": 165.0,
   "end_distance_m": 167.0,
   "midpoint_distance_m": 166.0,
   "start_elevation_m": 476.83644182682633,
   "end_elevation_m": 477.43115859600954,
   "start_xy": [
    793706.4699013635,
    6530158.519688305
   ],
   "end_xy": [
    793704.5277954144,
    6530158.997416767
   ]
  },
  "max_3m": {
   "gradient_pct": 28.607648395923963,
   "start_distance_m": 164.0,
   "end_distance_m": 167.0,
   "midpoint_distance_m": 165.5,
   "start_elevation_m": 476.5729291441318,
   "end_elevation_m": 477.43115859600954,
   "start_xy": [
    793707.440954338,
    6530158.2808240745
   ],
   "end_xy": [
    793704.5277954144,
    6530158.997416767
   ]
  }
 },
 "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": 0.09,
   "obstruction_max_height_m": 12.09,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "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_E793-N6530_0m5@22LHD4NL-2025-08-06.tif"
  ],
  "calculated_at": "2026-09-22T15:15:12+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": [
   "E793-N6530"
  ],
  "elevation_blocks": [
   "22LHD4NL@2025-08-06"
  ],
  "ign_dalles": [
   "LHD_FXX_0793_6531_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD4NL"
  ],
  "ign_editions": [
   "2025-08-06"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0793_6531_MNT_O_0M50_LAMB93_IGN69": "2025-08-06"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 27,
   "stations_resolved": 27,
   "width_median_m": 4.25,
   "width_p10_m": 2.65,
   "width_min_m": 1.75,
   "width_max_m": 12.0,
   "bounded_share": 0.111,
   "unbounded_share": 0.889,
   "confidence_median": 0.0,
   "width_median_bounded_m": 2.5,
   "window_m": [
    145.0,
    170.0
   ],
   "width_at_max25_m": 5.75,
   "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": 5.5,
    "width_p10_m": 2.05,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.593,
    "unbounded_share": 0.407,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.62,
    "window_m": [
     145.0,
     170.0
    ],
    "width_at_max25_m": 2.0,
    "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": "Saint-Marcel-de-F\u00e9lines",
  "county": "Loire",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}