{
 "ocl_version": "0.1.0",
 "name": "Chemin de Sormiou",
 "slug": "chemin-de-sormiou-3",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.519757638461726,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 990.0,
   "end_distance_m": 992.0,
   "start_elevation_m": 90.69499173210446,
   "end_elevation_m": 91.20538688487369,
   "min_gradient_pct": -0.1512744940502131,
   "suppressed_max_gradient_pct": 51.58760612231248,
   "suppressed_location_m": [
    1646.0,
    1648.0
   ],
   "suppressed_min_gradient_pct": -24.382094680258604,
   "suppressed_min_location_m": [
    1644.0,
    1646.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.796548166997923,
   "diagnostic": true,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 990.0,
   "end_distance_m": 993.0,
   "start_elevation_m": 90.69499173210446,
   "end_elevation_m": 91.43888817711439,
   "min_gradient_pct": -0.09040790962823546,
   "suppressed_max_gradient_pct": 38.78556233020826,
   "suppressed_location_m": [
    1646.0,
    1649.0
   ],
   "suppressed_min_gradient_pct": -10.748642500552327,
   "suppressed_min_location_m": [
    1643.0,
    1646.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.926179875003015,
   "diagnostic": false,
   "flags": [
    "structure_excluded",
    "structure_excluded_min"
   ],
   "start_distance_m": 990.0,
   "end_distance_m": 995.0,
   "start_elevation_m": 90.69499173210446,
   "end_elevation_m": 91.8913007258546,
   "min_gradient_pct": 0.2732067894942247,
   "suppressed_max_gradient_pct": 27.860971828396828,
   "suppressed_location_m": [
    1646.0,
    1651.0
   ],
   "suppressed_min_gradient_pct": -2.3175360831135094,
   "suppressed_min_location_m": [
    1641.0,
    1646.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.746492042151885,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 940.0,
   "end_distance_m": 950.0,
   "start_elevation_m": 83.79844598167023,
   "end_elevation_m": 86.17309518588542,
   "min_gradient_pct": 0.6193382381279378
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.332535751767324,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1258.0,
   "end_distance_m": 1278.0,
   "start_elevation_m": 125.05292709013142,
   "end_elevation_m": 129.51943424048488,
   "min_gradient_pct": 1.294832208268808
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.05524521571374,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1260.0,
   "end_distance_m": 1285.0,
   "start_elevation_m": 125.47351844946431,
   "end_elevation_m": 130.98732975339274,
   "min_gradient_pct": 1.5929468474922146
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.95736070549799,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1242.0,
   "end_distance_m": 1292.0,
   "start_elevation_m": 122.57788864908198,
   "end_elevation_m": 132.05656900183098,
   "min_gradient_pct": 3.150224487196665
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.327521639694027,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1189.0,
   "end_distance_m": 1289.0,
   "start_elevation_m": 114.36452984445086,
   "end_elevation_m": 131.69205148414488,
   "min_gradient_pct": 4.362917447218409
  }
 ],
 "shape": {
  "ascent_concentration": 0.352,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 206.0,
  "shape_class": "sustained"
 },
 "length_m": 1666.297806174596,
 "start_elevation_m": 5.279931695995101,
 "end_elevation_m": 181.27342159911757,
 "endpoint_gain_m": 175.99348990312248,
 "overall_gradient_pct": 10.56194692515137,
 "accumulated_ascent_m": 176.64257791718677,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.926179875003015,
   "start_distance_m": 990.0,
   "end_distance_m": 995.0,
   "midpoint_distance_m": 992.5,
   "start_elevation_m": 90.69499173210446,
   "end_elevation_m": 91.8913007258546,
   "start_xy": [
    896087.5393838738,
    6238116.99665512
   ],
   "end_xy": [
    896082.9855205017,
    6238118.778626862
   ]
  },
  "max_10m": {
   "gradient_pct": 23.746492042151885,
   "start_distance_m": 940.0,
   "end_distance_m": 950.0,
   "midpoint_distance_m": 945.0,
   "start_elevation_m": 83.79844598167023,
   "end_elevation_m": 86.17309518588542,
   "start_xy": [
    896097.7895862126,
    6238085.621013917
   ],
   "end_xy": [
    896089.9986828744,
    6238080.452257868
   ]
  },
  "max_20m": {
   "gradient_pct": 22.332535751767324,
   "start_distance_m": 1258.0,
   "end_distance_m": 1278.0,
   "midpoint_distance_m": 1268.0,
   "start_elevation_m": 125.05292709013142,
   "end_elevation_m": 129.51943424048488,
   "start_xy": [
    895978.833515664,
    6238092.937818889
   ],
   "end_xy": [
    895977.07942676,
    6238112.572217564
   ]
  },
  "max_25m": {
   "gradient_pct": 22.05524521571374,
   "start_distance_m": 1260.0,
   "end_distance_m": 1285.0,
   "midpoint_distance_m": 1272.5,
   "start_elevation_m": 125.47351844946431,
   "end_elevation_m": 130.98732975339274,
   "start_xy": [
    895979.1245208269,
    6238094.915434711
   ],
   "end_xy": [
    895973.4752038738,
    6238118.468849487
   ]
  },
  "max_50m": {
   "gradient_pct": 18.95736070549799,
   "start_distance_m": 1242.0,
   "end_distance_m": 1292.0,
   "midpoint_distance_m": 1267.0,
   "start_elevation_m": 122.57788864908198,
   "end_elevation_m": 132.05656900183098,
   "start_xy": [
    895972.2085275148,
    6238078.534706078
   ],
   "end_xy": [
    895967.3211819065,
    6238121.388099027
   ]
  },
  "max_100m": {
   "gradient_pct": 17.327521639694027,
   "start_distance_m": 1189.0,
   "end_distance_m": 1289.0,
   "midpoint_distance_m": 1239.0,
   "start_elevation_m": 114.36452984445086,
   "end_elevation_m": 131.69205148414488,
   "start_xy": [
    895980.2702827103,
    6238033.121153731
   ],
   "end_xy": [
    895970.2057157251,
    6238120.7592536155
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.2732067894942247,
   "start_distance_m": 402.0,
   "end_distance_m": 407.0,
   "midpoint_distance_m": 404.5,
   "start_elevation_m": 36.31763962652087,
   "end_elevation_m": 36.33129996599558,
   "start_xy": [
    896385.2996088313,
    6237865.098017282
   ],
   "end_xy": [
    896381.6047226902,
    6237868.455760595
   ]
  },
  "min_10m": {
   "gradient_pct": 0.6193382381279378,
   "start_distance_m": 398.0,
   "end_distance_m": 408.0,
   "midpoint_distance_m": 403.0,
   "start_elevation_m": 36.27986213372323,
   "end_elevation_m": 36.34179595753602,
   "start_xy": [
    896388.6035874289,
    6237862.843305455
   ],
   "end_xy": [
    896380.9142979996,
    6237869.179164872
   ]
  },
  "min_20m": {
   "gradient_pct": 1.294832208268808,
   "start_distance_m": 394.0,
   "end_distance_m": 414.0,
   "midpoint_distance_m": 404.0,
   "start_elevation_m": 36.20894863121027,
   "end_elevation_m": 36.46791507286403,
   "start_xy": [
    896392.0967787473,
    6237860.898447138
   ],
   "end_xy": [
    896376.7717498557,
    6237873.519590528
   ]
  },
  "min_25m": {
   "gradient_pct": 1.5929468474922146,
   "start_distance_m": 387.0,
   "end_distance_m": 412.0,
   "midpoint_distance_m": 399.5,
   "start_elevation_m": 36.01279904516839,
   "end_elevation_m": 36.41103575704145,
   "start_xy": [
    896398.5377167866,
    6237858.1679977095
   ],
   "end_xy": [
    896378.152599237,
    6237872.072781975
   ]
  },
  "min_50m": {
   "gradient_pct": 3.150224487196665,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 5.279931695995101,
   "end_elevation_m": 6.8550439395934335,
   "start_xy": [
    896654.015,
    6237628.414
   ],
   "end_xy": [
    896621.63652922,
    6237666.514323226
   ]
  },
  "min_100m": {
   "gradient_pct": 4.362917447218409,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 5.279931695995101,
   "end_elevation_m": 9.64284914321351,
   "start_xy": [
    896654.015,
    6237628.414
   ],
   "end_xy": [
    896590.8697586595,
    6237705.844580778
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.519757638461726,
   "start_distance_m": 990.0,
   "end_distance_m": 992.0,
   "midpoint_distance_m": 991.0,
   "start_elevation_m": 90.69499173210446,
   "end_elevation_m": 91.20538688487369,
   "start_xy": [
    896087.5393838738,
    6238116.99665512
   ],
   "end_xy": [
    896085.8585546757,
    6238118.027615087
   ]
  },
  "max_3m": {
   "gradient_pct": 24.796548166997923,
   "start_distance_m": 990.0,
   "end_distance_m": 993.0,
   "midpoint_distance_m": 991.5,
   "start_elevation_m": 90.69499173210446,
   "end_elevation_m": 91.43888817711439,
   "start_xy": [
    896087.5393838738,
    6238116.99665512
   ],
   "end_xy": [
    896084.9543486063,
    6238118.454711545
   ]
  }
 },
 "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": 0.004,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": [],
   "minima_resited": [
    2.0,
    3.0,
    5.0
   ],
   "minima_unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.006,
   "obstruction_max_height_m": 14.05,
   "flagged_windows_m": []
  },
  "excluded_ranges_m": [
   [
    1643.0,
    1649.0
   ]
  ],
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "41205ec4649bb0a4093af76ff34281a5d9a13832",
   "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-pr2",
   "road_pbf": "block-batch-fr-pr2.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:ba95a0bf562c86eb"
  },
  "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_E895-N6237_0m5@21LHD7PQ-2025-03-14.tif",
   "data/cache/fr/ign-lidarhd_dtm_E895-N6238_0m5@21LHD7PQ-2025-03-14.tif",
   "data/cache/fr/ign-lidarhd_dtm_E896-N6237_0m5@21LHD7PQ-2025-03-14.tif",
   "data/cache/fr/ign-lidarhd_dtm_E896-N6238_0m5@21LHD7PQ-2025-03-14.tif"
  ],
  "calculated_at": "2026-09-25T09:31:27+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pr2.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pr2",
  "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": [
   "E895-N6237",
   "E895-N6238",
   "E896-N6237",
   "E896-N6238"
  ],
  "elevation_blocks": [
   "21LHD7PQ@2025-03-14"
  ],
  "ign_dalles": [
   "LHD_FXX_0895_6238_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0895_6239_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0896_6238_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0896_6239_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD7PQ"
  ],
  "ign_editions": [
   "2025-03-14"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0895_6238_MNT_O_0M50_LAMB93_IGN69": "2025-03-14",
   "LHD_FXX_0895_6239_MNT_O_0M50_LAMB93_IGN69": "2025-03-14",
   "LHD_FXX_0896_6238_MNT_O_0M50_LAMB93_IGN69": "2025-03-14",
   "LHD_FXX_0896_6239_MNT_O_0M50_LAMB93_IGN69": "2025-03-14"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 4,
  "carriageway": {
   "stations": 72,
   "stations_resolved": 72,
   "width_median_m": 4.75,
   "width_p10_m": 3.5,
   "width_min_m": 3.0,
   "width_max_m": 11.0,
   "bounded_share": 0.569,
   "unbounded_share": 0.431,
   "confidence_median": 0.607,
   "width_median_bounded_m": 4.25,
   "window_m": [
    1260.0,
    1285.0
   ],
   "width_at_max25_m": 5.25,
   "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": 72,
    "stations_resolved": 72,
    "width_median_m": 6.12,
    "width_p10_m": 4.53,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.847,
    "unbounded_share": 0.153,
    "confidence_median": 1.0,
    "width_median_bounded_m": 5.75,
    "window_m": [
     1260.0,
     1285.0
    ],
    "width_at_max25_m": 7.62,
    "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": "Marseille",
  "county": "Bouches-du-Rh\u00f4ne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}