{
 "ocl_version": "0.1.0",
 "name": "Chemin des Razes",
 "slug": "chemin-des-razes",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 41.5813404659815,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 619.0,
   "end_distance_m": 621.0,
   "start_elevation_m": 499.97207191695884,
   "end_elevation_m": 500.80369872627847,
   "min_gradient_pct": -11.23593566752561
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 39.18513557486752,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 618.0,
   "end_distance_m": 621.0,
   "start_elevation_m": 499.62814465903244,
   "end_elevation_m": 500.80369872627847,
   "min_gradient_pct": -11.152103795878551
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 30.075446305939977,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 618.0,
   "end_distance_m": 623.0,
   "start_elevation_m": 499.62814465903244,
   "end_elevation_m": 501.13191697432944,
   "min_gradient_pct": -9.919867049109143
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.523883060971798,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 618.0,
   "end_distance_m": 628.0,
   "start_elevation_m": 499.62814465903244,
   "end_elevation_m": 502.2805329651296,
   "min_gradient_pct": -3.7562050287726834
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 26.211475439718868,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 618.0,
   "end_distance_m": 638.0,
   "start_elevation_m": 499.62814465903244,
   "end_elevation_m": 504.8704397469762,
   "min_gradient_pct": -1.9904164580739803
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 25.56715612620974,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 618.0,
   "end_distance_m": 643.0,
   "start_elevation_m": 499.62814465903244,
   "end_elevation_m": 506.0199336905849,
   "min_gradient_pct": -1.7912074137907439
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.835816197615486,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 613.0,
   "end_distance_m": 663.0,
   "start_elevation_m": 498.9627279099325,
   "end_elevation_m": 509.8806360087402,
   "min_gradient_pct": -1.6177697681592917
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.073176204541483,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 9.0,
   "end_distance_m": 109.0,
   "start_elevation_m": 440.5090087039925,
   "end_elevation_m": 459.582184908534,
   "min_gradient_pct": 0.21022437873045874
  }
 ],
 "shape": {
  "ascent_concentration": 0.348,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 113.0,
  "shape_class": "sustained"
 },
 "length_m": 976.8943720290985,
 "start_elevation_m": 440.10035327953733,
 "end_elevation_m": 547.5553727807859,
 "endpoint_gain_m": 107.45501950124856,
 "overall_gradient_pct": 10.999655907327494,
 "accumulated_ascent_m": 109.37136192707607,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 30.075446305939977,
   "start_distance_m": 618.0,
   "end_distance_m": 623.0,
   "midpoint_distance_m": 620.5,
   "start_elevation_m": 499.62814465903244,
   "end_elevation_m": 501.13191697432944,
   "start_xy": [
    793216.2373207649,
    6473988.066402509
   ],
   "end_xy": [
    793211.2478229965,
    6473988.390303757
   ]
  },
  "max_10m": {
   "gradient_pct": 26.523883060971798,
   "start_distance_m": 618.0,
   "end_distance_m": 628.0,
   "midpoint_distance_m": 623.0,
   "start_elevation_m": 499.62814465903244,
   "end_elevation_m": 502.2805329651296,
   "start_xy": [
    793216.2373207649,
    6473988.066402509
   ],
   "end_xy": [
    793206.258325228,
    6473988.714205005
   ]
  },
  "max_20m": {
   "gradient_pct": 26.211475439718868,
   "start_distance_m": 618.0,
   "end_distance_m": 638.0,
   "midpoint_distance_m": 628.0,
   "start_elevation_m": 499.62814465903244,
   "end_elevation_m": 504.8704397469762,
   "start_xy": [
    793216.2373207649,
    6473988.066402509
   ],
   "end_xy": [
    793196.2793296911,
    6473989.362007502
   ]
  },
  "max_25m": {
   "gradient_pct": 25.56715612620974,
   "start_distance_m": 618.0,
   "end_distance_m": 643.0,
   "midpoint_distance_m": 630.5,
   "start_elevation_m": 499.62814465903244,
   "end_elevation_m": 506.0199336905849,
   "start_xy": [
    793216.2373207649,
    6473988.066402509
   ],
   "end_xy": [
    793191.2898319226,
    6473989.68590875
   ]
  },
  "max_50m": {
   "gradient_pct": 21.835816197615486,
   "start_distance_m": 613.0,
   "end_distance_m": 663.0,
   "midpoint_distance_m": 638.0,
   "start_elevation_m": 498.9627279099325,
   "end_elevation_m": 509.8806360087402,
   "start_xy": [
    793221.2268185334,
    6473987.742501261
   ],
   "end_xy": [
    793172.1563321103,
    6473995.500503346
   ]
  },
  "max_100m": {
   "gradient_pct": 19.073176204541483,
   "start_distance_m": 9.0,
   "end_distance_m": 109.0,
   "midpoint_distance_m": 59.0,
   "start_elevation_m": 440.5090087039925,
   "end_elevation_m": 459.582184908534,
   "start_xy": [
    793437.843258286,
    6474196.576491694
   ],
   "end_xy": [
    793381.9418237908,
    6474129.515998483
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -9.919867049109143,
   "start_distance_m": 756.0,
   "end_distance_m": 761.0,
   "midpoint_distance_m": 758.5,
   "start_elevation_m": 522.0084408767806,
   "end_elevation_m": 521.5124475243251,
   "start_xy": [
    793082.3383242523,
    6474019.485388683
   ],
   "end_xy": [
    793077.8090847299,
    6474020.475146473
   ]
  },
  "min_10m": {
   "gradient_pct": -3.7562050287726834,
   "start_distance_m": 751.0,
   "end_distance_m": 761.0,
   "midpoint_distance_m": 756.0,
   "start_elevation_m": 521.8880680272024,
   "end_elevation_m": 521.5124475243251,
   "start_xy": [
    793087.195335611,
    6474018.298190022
   ],
   "end_xy": [
    793077.8090847299,
    6474020.475146473
   ]
  },
  "min_20m": {
   "gradient_pct": -1.9904164580739803,
   "start_distance_m": 425.0,
   "end_distance_m": 445.0,
   "midpoint_distance_m": 435.0,
   "start_elevation_m": 484.1139914649977,
   "end_elevation_m": 483.7159081733829,
   "start_xy": [
    793242.3659060097,
    6474085.836323791
   ],
   "end_xy": [
    793257.4585412003,
    6474072.797213156
   ]
  },
  "min_25m": {
   "gradient_pct": -1.7912074137907439,
   "start_distance_m": 420.0,
   "end_distance_m": 445.0,
   "midpoint_distance_m": 432.5,
   "start_elevation_m": 484.1637100268306,
   "end_elevation_m": 483.7159081733829,
   "start_xy": [
    793238.8106450331,
    6474089.352019937
   ],
   "end_xy": [
    793257.4585412003,
    6474072.797213156
   ]
  },
  "min_50m": {
   "gradient_pct": -1.6177697681592917,
   "start_distance_m": 397.0,
   "end_distance_m": 447.0,
   "midpoint_distance_m": 422.0,
   "start_elevation_m": 484.50872954606035,
   "end_elevation_m": 483.6998446619807,
   "start_xy": [
    793222.4564445411,
    6474105.524222206
   ],
   "end_xy": [
    793259.0735944476,
    6474071.617550912
   ]
  },
  "min_100m": {
   "gradient_pct": 0.21022437873045874,
   "start_distance_m": 386.0,
   "end_distance_m": 486.0,
   "midpoint_distance_m": 436.0,
   "start_elevation_m": 484.4119503817851,
   "end_elevation_m": 484.6221747605156,
   "start_xy": [
    793214.6348703927,
    6474113.258753727
   ],
   "end_xy": [
    793290.567132772,
    6474048.61413717
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 41.5813404659815,
   "start_distance_m": 619.0,
   "end_distance_m": 621.0,
   "midpoint_distance_m": 620.0,
   "start_elevation_m": 499.97207191695884,
   "end_elevation_m": 500.80369872627847,
   "start_xy": [
    793215.2394212112,
    6473988.131182758
   ],
   "end_xy": [
    793213.2436221038,
    6473988.260743258
   ]
  },
  "max_3m": {
   "gradient_pct": 39.18513557486752,
   "start_distance_m": 618.0,
   "end_distance_m": 621.0,
   "midpoint_distance_m": 619.5,
   "start_elevation_m": 499.62814465903244,
   "end_elevation_m": 500.80369872627847,
   "start_xy": [
    793216.2373207649,
    6473988.066402509
   ],
   "end_xy": [
    793213.2436221038,
    6473988.260743258
   ]
  }
 },
 "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": 0.08,
   "obstruction_max_height_m": 15.54,
   "flagged_windows_m": [
    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_E793-N6473_0m5@22LHD5NM-2025-02-27.tif",
   "data/cache/fr/ign-lidarhd_dtm_E793-N6474_0m5@22LHD5NM-2025-02-27.tif"
  ],
  "calculated_at": "2026-09-22T14:11:29+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-N6473",
   "E793-N6474"
  ],
  "elevation_blocks": [
   "22LHD5NM@2025-02-27"
  ],
  "ign_dalles": [
   "LHD_FXX_0793_6474_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0793_6475_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD5NM"
  ],
  "ign_editions": [
   "2025-02-27"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0793_6474_MNT_O_0M50_LAMB93_IGN69": "2025-02-27",
   "LHD_FXX_0793_6475_MNT_O_0M50_LAMB93_IGN69": "2025-02-27"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 4,
  "carriageway": {
   "stations": 46,
   "stations_resolved": 46,
   "width_median_m": 5.12,
   "width_p10_m": 2.25,
   "width_min_m": 1.25,
   "width_max_m": 12.0,
   "bounded_share": 0.283,
   "unbounded_share": 0.717,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.75,
   "window_m": [
    618.0,
    643.0
   ],
   "width_at_max25_m": 2.25,
   "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": 46,
    "stations_resolved": 46,
    "width_median_m": 5.75,
    "width_p10_m": 2.88,
    "width_min_m": 0.75,
    "width_max_m": 12.0,
    "bounded_share": 0.717,
    "unbounded_share": 0.283,
    "confidence_median": 1.0,
    "width_median_bounded_m": 4.75,
    "window_m": [
     618.0,
     643.0
    ],
    "width_at_max25_m": 4.25,
    "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": "Aurec-sur-Loire",
  "county": "Haute-Loire",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}