{
 "ocl_version": "0.1.0",
 "name": "Chemin du Borfignon",
 "slug": "chemin-du-borfignon",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 43.54941514603752,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 212.0,
   "end_distance_m": 214.0,
   "start_elevation_m": 610.5062455194092,
   "end_elevation_m": 611.3772338223299,
   "min_gradient_pct": -0.8790833858256519
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 35.14594362115607,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 212.0,
   "end_distance_m": 215.0,
   "start_elevation_m": 610.5062455194092,
   "end_elevation_m": 611.5606238280438,
   "min_gradient_pct": -0.39148960851586406
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 29.37892229980207,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 209.0,
   "end_distance_m": 214.0,
   "start_elevation_m": 609.9082877073398,
   "end_elevation_m": 611.3772338223299,
   "min_gradient_pct": -0.39692411730584354
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.977140018060027,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 204.0,
   "end_distance_m": 214.0,
   "start_elevation_m": 608.8795198205239,
   "end_elevation_m": 611.3772338223299,
   "min_gradient_pct": 0.7054468818137138
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.691073067612706,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 194.0,
   "end_distance_m": 214.0,
   "start_elevation_m": 606.8390192088074,
   "end_elevation_m": 611.3772338223299,
   "min_gradient_pct": 1.4644136546104392
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.87740543361997,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 189.0,
   "end_distance_m": 214.0,
   "start_elevation_m": 605.9078824639249,
   "end_elevation_m": 611.3772338223299,
   "min_gradient_pct": 1.6285234754441262
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.65468244331828,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 181.0,
   "end_distance_m": 231.0,
   "start_elevation_m": 604.4050566569301,
   "end_elevation_m": 614.7323978785893,
   "min_gradient_pct": 2.511200363278249
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.345438312043825,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 133.0,
   "end_distance_m": 233.0,
   "start_elevation_m": 596.650488213054,
   "end_elevation_m": 614.9959265250978,
   "min_gradient_pct": 3.904765516051384
  }
 ],
 "shape": {
  "ascent_concentration": 0.412,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 269.0,
  "shape_class": "sustained"
 },
 "length_m": 700.6476094729675,
 "start_elevation_m": 581.0507952088988,
 "end_elevation_m": 659.6413801757767,
 "endpoint_gain_m": 78.59058496687794,
 "overall_gradient_pct": 11.216849084234282,
 "accumulated_ascent_m": 78.7102243261985,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 29.37892229980207,
   "start_distance_m": 209.0,
   "end_distance_m": 214.0,
   "midpoint_distance_m": 211.5,
   "start_elevation_m": 609.9082877073398,
   "end_elevation_m": 611.3772338223299,
   "start_xy": [
    817830.7969369579,
    6504655.801000776
   ],
   "end_xy": [
    817835.7292535375,
    6504654.981090318
   ]
  },
  "max_10m": {
   "gradient_pct": 24.977140018060027,
   "start_distance_m": 204.0,
   "end_distance_m": 214.0,
   "midpoint_distance_m": 209.0,
   "start_elevation_m": 608.8795198205239,
   "end_elevation_m": 611.3772338223299,
   "start_xy": [
    817825.9537429254,
    6504656.991931982
   ],
   "end_xy": [
    817835.7292535375,
    6504654.981090318
   ]
  },
  "max_20m": {
   "gradient_pct": 22.691073067612706,
   "start_distance_m": 194.0,
   "end_distance_m": 214.0,
   "midpoint_distance_m": 204.0,
   "start_elevation_m": 606.8390192088074,
   "end_elevation_m": 611.3772338223299,
   "start_xy": [
    817816.4711228576,
    6504660.139850963
   ],
   "end_xy": [
    817835.7292535375,
    6504654.981090318
   ]
  },
  "max_25m": {
   "gradient_pct": 21.87740543361997,
   "start_distance_m": 189.0,
   "end_distance_m": 214.0,
   "midpoint_distance_m": 201.5,
   "start_elevation_m": 605.9078824639249,
   "end_elevation_m": 611.3772338223299,
   "start_xy": [
    817811.9567371616,
    6504662.289344342
   ],
   "end_xy": [
    817835.7292535375,
    6504654.981090318
   ]
  },
  "max_50m": {
   "gradient_pct": 20.65468244331828,
   "start_distance_m": 181.0,
   "end_distance_m": 231.0,
   "midpoint_distance_m": 206.0,
   "start_elevation_m": 604.4050566569301,
   "end_elevation_m": 614.7323978785893,
   "start_xy": [
    817804.7337200481,
    6504665.7285337495
   ],
   "end_xy": [
    817852.5531857731,
    6504653.757728909
   ]
  },
  "max_100m": {
   "gradient_pct": 18.345438312043825,
   "start_distance_m": 133.0,
   "end_distance_m": 233.0,
   "midpoint_distance_m": 183.0,
   "start_elevation_m": 596.650488213054,
   "end_elevation_m": 614.9959265250978,
   "start_xy": [
    817759.30671528,
    6504680.894796949
   ],
   "end_xy": [
    817854.5440451317,
    6504653.948723711
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.39692411730584354,
   "start_distance_m": 554.0,
   "end_distance_m": 559.0,
   "midpoint_distance_m": 556.5,
   "start_elevation_m": 650.7711419882776,
   "end_elevation_m": 650.7512957824123,
   "start_xy": [
    818163.9102407285,
    6504639.263550264
   ],
   "end_xy": [
    818168.8906217301,
    6504638.821051587
   ]
  },
  "min_10m": {
   "gradient_pct": 0.7054468818137138,
   "start_distance_m": 550.0,
   "end_distance_m": 560.0,
   "midpoint_distance_m": 555.0,
   "start_elevation_m": 650.7029864726542,
   "end_elevation_m": 650.7735311608355,
   "start_xy": [
    818159.9259359273,
    6504639.617549205
   ],
   "end_xy": [
    818169.7184456413,
    6504639.05954288
   ]
  },
  "min_20m": {
   "gradient_pct": 1.4644136546104392,
   "start_distance_m": 539.0,
   "end_distance_m": 559.0,
   "midpoint_distance_m": 549.0,
   "start_elevation_m": 650.4584130514902,
   "end_elevation_m": 650.7512957824123,
   "start_xy": [
    818148.9372524648,
    6504639.521440262
   ],
   "end_xy": [
    818168.8906217301,
    6504638.821051587
   ]
  },
  "min_25m": {
   "gradient_pct": 1.6285234754441262,
   "start_distance_m": 534.0,
   "end_distance_m": 559.0,
   "midpoint_distance_m": 546.5,
   "start_elevation_m": 650.3441649135513,
   "end_elevation_m": 650.7512957824123,
   "start_xy": [
    818143.9393675195,
    6504639.376023364
   ],
   "end_xy": [
    818168.8906217301,
    6504638.821051587
   ]
  },
  "min_50m": {
   "gradient_pct": 2.511200363278249,
   "start_distance_m": 524.0,
   "end_distance_m": 574.0,
   "midpoint_distance_m": 549.0,
   "start_elevation_m": 650.0030609033851,
   "end_elevation_m": 651.2586610850242,
   "start_xy": [
    818133.9508545146,
    6504639.382305908
   ],
   "end_xy": [
    818176.8169890108,
    6504651.126468007
   ]
  },
  "min_100m": {
   "gradient_pct": 3.904765516051384,
   "start_distance_m": 518.0,
   "end_distance_m": 618.0,
   "midpoint_distance_m": 568.0,
   "start_elevation_m": 649.6826366342291,
   "end_elevation_m": 653.5874021502805,
   "start_xy": [
    818127.9690629402,
    6504639.849392153
   ],
   "end_xy": [
    818195.4185938953,
    6504690.990416974
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 43.54941514603752,
   "start_distance_m": 212.0,
   "end_distance_m": 214.0,
   "midpoint_distance_m": 213.0,
   "start_elevation_m": 610.5062455194092,
   "end_elevation_m": 611.3772338223299,
   "start_xy": [
    817833.7563269056,
    6504655.309054501
   ],
   "end_xy": [
    817835.7292535375,
    6504654.981090318
   ]
  },
  "max_3m": {
   "gradient_pct": 35.14594362115607,
   "start_distance_m": 212.0,
   "end_distance_m": 215.0,
   "midpoint_distance_m": 213.5,
   "start_elevation_m": 610.5062455194092,
   "end_elevation_m": 611.5606238280438,
   "start_xy": [
    817833.7563269056,
    6504655.309054501
   ],
   "end_xy": [
    817836.7157168534,
    6504654.817108227
   ]
  }
 },
 "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": {
  "structure_suppression": {
   "masked_fraction": 0.03,
   "windows_resited": [],
   "windows_unresolved": [],
   "minima_resited": [],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.182,
   "obstruction_max_height_m": 24.11,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    0.0,
    20.0
   ]
  ],
  "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-mc8",
   "road_pbf": "block-batch-fr-mc8.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_E817-N6504_0m5@22LHD4NL-2025-08-06.tif",
   "data/cache/fr/ign-lidarhd_dtm_E818-N6504_0m5@22LHD4NL-2025-08-06.tif"
  ],
  "calculated_at": "2026-09-22T14:49:57+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc8.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-mc8",
  "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": [
   "E817-N6504",
   "E818-N6504"
  ],
  "elevation_blocks": [
   "22LHD4NL@2025-08-06"
  ],
  "ign_dalles": [
   "LHD_FXX_0817_6505_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0818_6505_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD4NL"
  ],
  "ign_editions": [
   "2025-08-06"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0817_6505_MNT_O_0M50_LAMB93_IGN69": "2025-08-06",
   "LHD_FXX_0818_6505_MNT_O_0M50_LAMB93_IGN69": "2025-08-06"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 2,
  "structure_mask_ranges_m": [
   [
    0.0,
    15.0
   ]
  ],
  "carriageway": {
   "stations": 35,
   "stations_resolved": 35,
   "width_median_m": 3.75,
   "width_p10_m": 2.5,
   "width_min_m": 2.25,
   "width_max_m": 12.0,
   "bounded_share": 0.2,
   "unbounded_share": 0.8,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.0,
   "window_m": [
    189.0,
    214.0
   ],
   "width_at_max25_m": 3.75,
   "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": 35,
    "stations_resolved": 35,
    "width_median_m": 8.0,
    "width_p10_m": 1.7,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.429,
    "unbounded_share": 0.571,
    "confidence_median": 0.0,
    "width_median_bounded_m": 3.0,
    "window_m": [
     189.0,
     214.0
    ],
    "width_at_max25_m": 3.0,
    "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": "Larajasse",
  "county": "Rh\u00f4ne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}