{
 "ocl_version": "0.1.0",
 "name": "Ruelle aux Boeufs",
 "slug": "ruelle-aux-boeufs",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 28.867185530535266,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 550.0,
   "end_distance_m": 552.0,
   "start_elevation_m": 147.53416930298005,
   "end_elevation_m": 148.11151301359075,
   "min_gradient_pct": -2.6812565306272518
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.73385236123526,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 549.0,
   "end_distance_m": 552.0,
   "start_elevation_m": 147.2794974427537,
   "end_elevation_m": 148.11151301359075,
   "min_gradient_pct": -2.3316927350876426
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.000102880213376,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 547.0,
   "end_distance_m": 552.0,
   "start_elevation_m": 146.81150786958008,
   "end_elevation_m": 148.11151301359075,
   "min_gradient_pct": 0.1870107582075775
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.78685112823314,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 547.0,
   "end_distance_m": 557.0,
   "start_elevation_m": 146.81150786958008,
   "end_elevation_m": 149.2901929824034,
   "min_gradient_pct": 3.502719979238975
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.25093006974248,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 537.0,
   "end_distance_m": 557.0,
   "start_elevation_m": 144.8400069684549,
   "end_elevation_m": 149.2901929824034,
   "min_gradient_pct": 4.992583432320998
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.543482015151767,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 535.0,
   "end_distance_m": 560.0,
   "start_elevation_m": 144.43557751062326,
   "end_elevation_m": 149.8214480144112,
   "min_gradient_pct": 5.33721509743043
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.857189477743702,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 510.0,
   "end_distance_m": 560.0,
   "start_elevation_m": 140.39285327553935,
   "end_elevation_m": 149.8214480144112,
   "min_gradient_pct": 5.788489957445961
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.82145711100347,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 461.0,
   "end_distance_m": 561.0,
   "start_elevation_m": 133.1555629583873,
   "end_elevation_m": 149.97702006939076,
   "min_gradient_pct": 6.1840123183892635
  }
 ],
 "shape": {
  "ascent_concentration": 0.368,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 295.0,
  "shape_class": "sustained"
 },
 "length_m": 597.0751100601175,
 "start_elevation_m": 88.98565231826879,
 "end_elevation_m": 153.9393371282936,
 "endpoint_gain_m": 64.95368481002481,
 "overall_gradient_pct": 10.878645536486161,
 "accumulated_ascent_m": 65.02363559207744,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.000102880213376,
   "start_distance_m": 547.0,
   "end_distance_m": 552.0,
   "midpoint_distance_m": 549.5,
   "start_elevation_m": 146.81150786958008,
   "end_elevation_m": 148.11151301359075,
   "start_xy": [
    628399.9042046109,
    6845678.47294616
   ],
   "end_xy": [
    628394.9067316937,
    6845678.631894083
   ]
  },
  "max_10m": {
   "gradient_pct": 24.78685112823314,
   "start_distance_m": 547.0,
   "end_distance_m": 557.0,
   "midpoint_distance_m": 552.0,
   "start_elevation_m": 146.81150786958008,
   "end_elevation_m": 149.2901929824034,
   "start_xy": [
    628399.9042046109,
    6845678.47294616
   ],
   "end_xy": [
    628389.9092587766,
    6845678.790842007
   ]
  },
  "max_20m": {
   "gradient_pct": 22.25093006974248,
   "start_distance_m": 537.0,
   "end_distance_m": 557.0,
   "midpoint_distance_m": 547.0,
   "start_elevation_m": 144.8400069684549,
   "end_elevation_m": 149.2901929824034,
   "start_xy": [
    628409.8814041584,
    6845678.713859937
   ],
   "end_xy": [
    628389.9092587766,
    6845678.790842007
   ]
  },
  "max_25m": {
   "gradient_pct": 21.543482015151767,
   "start_distance_m": 535.0,
   "end_distance_m": 560.0,
   "midpoint_distance_m": 547.5,
   "start_elevation_m": 144.43557751062326,
   "end_elevation_m": 149.8214480144112,
   "start_xy": [
    628411.872331184,
    6845678.904148085
   ],
   "end_xy": [
    628386.9107750263,
    6845678.886210761
   ]
  },
  "max_50m": {
   "gradient_pct": 18.857189477743702,
   "start_distance_m": 510.0,
   "end_distance_m": 560.0,
   "midpoint_distance_m": 535.0,
   "start_elevation_m": 140.39285327553935,
   "end_elevation_m": 149.8214480144112,
   "start_xy": [
    628436.0198366188,
    6845684.678862794
   ],
   "end_xy": [
    628386.9107750263,
    6845678.886210761
   ]
  },
  "max_100m": {
   "gradient_pct": 16.82145711100347,
   "start_distance_m": 461.0,
   "end_distance_m": 561.0,
   "midpoint_distance_m": 511.0,
   "start_elevation_m": 133.1555629583873,
   "end_elevation_m": 149.97702006939076,
   "start_xy": [
    628482.1430654319,
    6845701.088174073
   ],
   "end_xy": [
    628385.9112804428,
    6845678.918000346
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.1870107582075775,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 88.98565231826879,
   "end_elevation_m": 88.99500285617917,
   "start_xy": [
    628802.139,
    6845509.517
   ],
   "end_xy": [
    628799.9645748336,
    6845514.019429921
   ]
  },
  "min_10m": {
   "gradient_pct": 3.502719979238975,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 88.98565231826879,
   "end_elevation_m": 89.33592431619269,
   "start_xy": [
    628802.139,
    6845509.517
   ],
   "end_xy": [
    628797.7901496674,
    6845518.521859842
   ]
  },
  "min_20m": {
   "gradient_pct": 4.992583432320998,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 88.98565231826879,
   "end_elevation_m": 89.98416900473299,
   "start_xy": [
    628802.139,
    6845509.517
   ],
   "end_xy": [
    628793.4412993349,
    6845527.526719686
   ]
  },
  "min_25m": {
   "gradient_pct": 5.33721509743043,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 88.98565231826879,
   "end_elevation_m": 90.3199560926264,
   "start_xy": [
    628802.139,
    6845509.517
   ],
   "end_xy": [
    628791.2671980908,
    6845532.029306023
   ]
  },
  "min_50m": {
   "gradient_pct": 5.788489957445961,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 88.98565231826879,
   "end_elevation_m": 91.87989729699177,
   "start_xy": [
    628802.139,
    6845509.517
   ],
   "end_xy": [
    628780.9738826806,
    6845554.765374935
   ]
  },
  "min_100m": {
   "gradient_pct": 6.1840123183892635,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 88.98565231826879,
   "end_elevation_m": 95.16966463665806,
   "start_xy": [
    628802.139,
    6845509.517
   ],
   "end_xy": [
    628767.3956677446,
    6845602.883629383
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 28.867185530535266,
   "start_distance_m": 550.0,
   "end_distance_m": 552.0,
   "midpoint_distance_m": 551.0,
   "start_elevation_m": 147.53416930298005,
   "end_elevation_m": 148.11151301359075,
   "start_xy": [
    628396.9057208606,
    6845678.568314914
   ],
   "end_xy": [
    628394.9067316937,
    6845678.631894083
   ]
  },
  "max_3m": {
   "gradient_pct": 27.73385236123526,
   "start_distance_m": 549.0,
   "end_distance_m": 552.0,
   "midpoint_distance_m": 550.5,
   "start_elevation_m": 147.2794974427537,
   "end_elevation_m": 148.11151301359075,
   "start_xy": [
    628397.905215444,
    6845678.536525329
   ],
   "end_xy": [
    628394.9067316937,
    6845678.631894083
   ]
  }
 },
 "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": 0.467,
   "obstruction_max_height_m": 24.85,
   "flagged_windows_m": [
    2,
    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-ce3",
   "road_pbf": "block-batch-fr-ce3.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_E628-N6845_0m5@21LHDJE-2025-06-05.tif"
  ],
  "calculated_at": "2026-09-26T20:23:27+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-ce3.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-ce3",
  "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": [
   "E628-N6845"
  ],
  "elevation_blocks": [
   "21LHDJE@2025-06-05"
  ],
  "ign_dalles": [
   "LHD_FXX_0628_6846_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHDJE"
  ],
  "ign_editions": [
   "2025-06-05"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0628_6846_MNT_O_0M50_LAMB93_IGN69": "2025-06-05"
  },
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "structure_own_ways": "none \u2014 the route carried no way list and no mapped way runs along it; own decks unmasked",
  "carriageway": {
   "stations": 29,
   "stations_resolved": 29,
   "width_median_m": 3.0,
   "width_p10_m": 1.5,
   "width_min_m": 1.0,
   "width_max_m": 12.0,
   "bounded_share": 0.552,
   "unbounded_share": 0.448,
   "confidence_median": 0.649,
   "width_median_bounded_m": 3.0,
   "window_m": [
    535.0,
    560.0
   ],
   "width_at_max25_m": 2.12,
   "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": 29,
    "stations_resolved": 29,
    "width_median_m": 2.25,
    "width_p10_m": 0.95,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.931,
    "unbounded_share": 0.069,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.25,
    "window_m": [
     535.0,
     560.0
    ],
    "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": "Chevreuse",
  "county": "Yvelines",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}