{
 "ocl_version": "0.1.0",
 "name": "Chemin de Chartel",
 "slug": "chemin-de-chartel",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.78760883202409,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 167.0,
   "end_distance_m": 169.0,
   "start_elevation_m": 251.41588839583375,
   "end_elevation_m": 251.97164057247423,
   "min_gradient_pct": 2.429868120447054
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.181780184550536,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 166.0,
   "end_distance_m": 169.0,
   "start_elevation_m": 251.1561871669377,
   "end_elevation_m": 251.97164057247423,
   "min_gradient_pct": 3.1973421678420286
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.808177036410598,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 164.0,
   "end_distance_m": 169.0,
   "start_elevation_m": 250.6812317206537,
   "end_elevation_m": 251.97164057247423,
   "min_gradient_pct": 3.4610632467428104
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.641021990382512,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 161.0,
   "end_distance_m": 171.0,
   "start_elevation_m": 249.94971438040983,
   "end_elevation_m": 252.41381657944808,
   "min_gradient_pct": 4.091569689371113
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.13763640916312,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 153.0,
   "end_distance_m": 173.0,
   "start_elevation_m": 248.40802542214794,
   "end_elevation_m": 252.83555270398057,
   "min_gradient_pct": 5.38561085937161
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.21300825200842,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 154.0,
   "end_distance_m": 179.0,
   "start_elevation_m": 248.5959368696383,
   "end_elevation_m": 253.8991889326404,
   "min_gradient_pct": 5.515007418434607
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.558566641942832,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 133.0,
   "end_distance_m": 183.0,
   "start_elevation_m": 244.86000139662303,
   "end_elevation_m": 254.63928471759445,
   "min_gradient_pct": 6.299258952988453
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.990991108421525,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 87.0,
   "end_distance_m": 187.0,
   "start_elevation_m": 237.31475055820357,
   "end_elevation_m": 255.3057416666251,
   "min_gradient_pct": 8.246798078068423
  }
 ],
 "shape": {
  "ascent_concentration": 0.362,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 225.0,
  "shape_class": "sustained"
 },
 "length_m": 679.599091400806,
 "start_elevation_m": 228.41303771387663,
 "end_elevation_m": 303.10062676725636,
 "endpoint_gain_m": 74.68758905337972,
 "overall_gradient_pct": 10.989948338428745,
 "accumulated_ascent_m": 74.68797594908256,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.808177036410598,
   "start_distance_m": 164.0,
   "end_distance_m": 169.0,
   "midpoint_distance_m": 166.5,
   "start_elevation_m": 250.6812317206537,
   "end_elevation_m": 251.97164057247423,
   "start_xy": [
    870606.8001772076,
    6845244.189063466
   ],
   "end_xy": [
    870601.9656785739,
    6845243.443436955
   ]
  },
  "max_10m": {
   "gradient_pct": 24.641021990382512,
   "start_distance_m": 161.0,
   "end_distance_m": 171.0,
   "midpoint_distance_m": 166.0,
   "start_elevation_m": 249.94971438040983,
   "end_elevation_m": 252.41381657944808,
   "start_xy": [
    870609.4787908243,
    6845245.539999842
   ],
   "end_xy": [
    870599.9659008405,
    6845243.413620574
   ]
  },
  "max_20m": {
   "gradient_pct": 22.13763640916312,
   "start_distance_m": 153.0,
   "end_distance_m": 173.0,
   "midpoint_distance_m": 163.0,
   "start_elevation_m": 248.40802542214794,
   "end_elevation_m": 252.83555270398057,
   "start_xy": [
    870614.6875445666,
    6845251.1404077355
   ],
   "end_xy": [
    870597.966123107,
    6845243.383804194
   ]
  },
  "max_25m": {
   "gradient_pct": 21.21300825200842,
   "start_distance_m": 154.0,
   "end_distance_m": 179.0,
   "midpoint_distance_m": 166.5,
   "start_elevation_m": 248.5959368696383,
   "end_elevation_m": 253.8991889326404,
   "start_xy": [
    870614.2092566161,
    6845250.262204912
   ],
   "end_xy": [
    870591.99795334,
    6845243.668821312
   ]
  },
  "max_50m": {
   "gradient_pct": 19.558566641942832,
   "start_distance_m": 133.0,
   "end_distance_m": 183.0,
   "midpoint_distance_m": 158.0,
   "start_elevation_m": 244.86000139662303,
   "end_elevation_m": 254.63928471759445,
   "start_xy": [
    870614.4847394802,
    6845270.705945778
   ],
   "end_xy": [
    870588.063273589,
    6845244.38874857
   ]
  },
  "max_100m": {
   "gradient_pct": 17.990991108421525,
   "start_distance_m": 87.0,
   "end_distance_m": 187.0,
   "midpoint_distance_m": 137.0,
   "start_elevation_m": 237.31475055820357,
   "end_elevation_m": 255.3057416666251,
   "start_xy": [
    870607.009141965,
    6845316.094440375
   ],
   "end_xy": [
    870584.1285938382,
    6845245.108675829
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 3.4610632467428104,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 228.41303771387663,
   "end_elevation_m": 228.58609087621377,
   "start_xy": [
    870647.534,
    6845382.941
   ],
   "end_xy": [
    870643.2676544322,
    6845380.333645882
   ]
  },
  "min_10m": {
   "gradient_pct": 4.091569689371113,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 228.41303771387663,
   "end_elevation_m": 228.82219468281374,
   "start_xy": [
    870647.534,
    6845382.941
   ],
   "end_xy": [
    870639.0013088643,
    6845377.726291764
   ]
  },
  "min_20m": {
   "gradient_pct": 5.38561085937161,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 228.41303771387663,
   "end_elevation_m": 229.49015988575096,
   "start_xy": [
    870647.534,
    6845382.941
   ],
   "end_xy": [
    870630.4686177287,
    6845372.5115835285
   ]
  },
  "min_25m": {
   "gradient_pct": 5.515007418434607,
   "start_distance_m": 369.0,
   "end_distance_m": 394.0,
   "midpoint_distance_m": 381.5,
   "start_elevation_m": 275.03838810410025,
   "end_elevation_m": 276.4171399587089,
   "start_xy": [
    870413.9510743535,
    6845206.465910423
   ],
   "end_xy": [
    870392.2966366992,
    6845193.972498964
   ]
  },
  "min_50m": {
   "gradient_pct": 6.299258952988453,
   "start_distance_m": 357.0,
   "end_distance_m": 407.0,
   "midpoint_distance_m": 382.0,
   "start_elevation_m": 274.2288657292934,
   "end_elevation_m": 277.3784952057876,
   "start_xy": [
    870424.3452044275,
    6845212.462747922
   ],
   "end_xy": [
    870382.2154994415,
    6845185.91156537
   ]
  },
  "min_100m": {
   "gradient_pct": 8.246798078068423,
   "start_distance_m": 579.0,
   "end_distance_m": 679.0,
   "midpoint_distance_m": 629.0,
   "start_elevation_m": 294.8299795509414,
   "end_elevation_m": 303.0767776290098,
   "start_xy": [
    870282.7977510797,
    6845045.998142295
   ],
   "end_xy": [
    870220.0169447055,
    6844968.170198152
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.78760883202409,
   "start_distance_m": 167.0,
   "end_distance_m": 169.0,
   "midpoint_distance_m": 168.0,
   "start_elevation_m": 251.41588839583375,
   "end_elevation_m": 251.97164057247423,
   "start_xy": [
    870603.9654563075,
    6845243.473253336
   ],
   "end_xy": [
    870601.9656785739,
    6845243.443436955
   ]
  },
  "max_3m": {
   "gradient_pct": 27.181780184550536,
   "start_distance_m": 166.0,
   "end_distance_m": 169.0,
   "midpoint_distance_m": 167.5,
   "start_elevation_m": 251.1561871669377,
   "end_elevation_m": 251.97164057247423,
   "start_xy": [
    870604.9653451742,
    6845243.488161527
   ],
   "end_xy": [
    870601.9656785739,
    6845243.443436955
   ]
  }
 },
 "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": 0.1,
   "obstruction_max_height_m": 22.26,
   "flagged_windows_m": [
    2,
    3,
    5,
    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": "16bcc1553fe58b280e0c4a66a3ab0980530490a6",
   "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-ne5",
   "road_pbf": "block-batch-fr-ne5.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": "sha256:18f786cf9fa98070"
  },
  "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_E870-N6844_0m5@21LHDOE-2025-07-31.tif",
   "data/cache/fr/ign-lidarhd_dtm_E870-N6845_0m5@21LHDOE-2025-07-31.tif"
  ],
  "calculated_at": "2026-09-26T19:13:45+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-ne5.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-ne5",
  "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": [
   "E870-N6844",
   "E870-N6845"
  ],
  "elevation_blocks": [
   "21LHDOE@2025-07-31"
  ],
  "ign_dalles": [
   "LHD_FXX_0870_6845_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0870_6846_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHDOE"
  ],
  "ign_editions": [
   "2025-07-31"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0870_6845_MNT_O_0M50_LAMB93_IGN69": "2025-07-31",
   "LHD_FXX_0870_6846_MNT_O_0M50_LAMB93_IGN69": "2025-07-31"
  },
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": 2,
  "carriageway": {
   "stations": 34,
   "stations_resolved": 34,
   "width_median_m": 4.5,
   "width_p10_m": 3.08,
   "width_min_m": 2.5,
   "width_max_m": 10.25,
   "bounded_share": 0.412,
   "unbounded_share": 0.588,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.38,
   "window_m": [
    154.0,
    179.0
   ],
   "width_at_max25_m": 3.25,
   "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": 34,
    "stations_resolved": 34,
    "width_median_m": 4.5,
    "width_p10_m": 0.5,
    "width_min_m": 0.0,
    "width_max_m": 12.0,
    "bounded_share": 0.971,
    "unbounded_share": 0.029,
    "confidence_median": 1.0,
    "width_median_bounded_m": 4.5,
    "window_m": [
     154.0,
     179.0
    ],
    "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": "Ligny-en-Barrois",
  "county": "Meuse",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}