{
 "ocl_version": "0.1.0",
 "name": "Impasse de La Palmeraie",
 "slug": "impasse-de-la-palmeraie",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.429393727143434,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 479.0,
   "end_distance_m": 481.0,
   "start_elevation_m": 111.8510310385754,
   "end_elevation_m": 112.35961891311827,
   "min_gradient_pct": -7.357925098684603
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.230655527181984,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 480.0,
   "end_distance_m": 483.0,
   "start_elevation_m": 112.10627607730855,
   "end_elevation_m": 112.86319574312401,
   "min_gradient_pct": -4.232813517516831
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.866391135986134,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 479.0,
   "end_distance_m": 484.0,
   "start_elevation_m": 111.8510310385754,
   "end_elevation_m": 113.0943505953747,
   "min_gradient_pct": -0.8014570350130157
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 22.82415394847888,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 477.0,
   "end_distance_m": 487.0,
   "start_elevation_m": 111.4655040711866,
   "end_elevation_m": 113.74791946603449,
   "min_gradient_pct": 0.6156326460536832
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.13562899259064,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 264.0,
   "end_distance_m": 284.0,
   "start_elevation_m": 86.85655806258958,
   "end_elevation_m": 90.88368386110771,
   "min_gradient_pct": 1.887020289782555
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.06343886958689,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 262.0,
   "end_distance_m": 287.0,
   "start_elevation_m": 86.47723858894295,
   "end_elevation_m": 91.49309830633968,
   "min_gradient_pct": 3.4240637038738555
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.252117778458512,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 247.0,
   "end_distance_m": 297.0,
   "start_elevation_m": 84.00059194395436,
   "end_elevation_m": 93.12665083318362,
   "min_gradient_pct": 4.9105721745507935
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.897211137455542,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 207.0,
   "end_distance_m": 307.0,
   "start_elevation_m": 77.69615917336495,
   "end_elevation_m": 94.59337031082049,
   "min_gradient_pct": 6.3949757288095705
  }
 ],
 "shape": {
  "ascent_concentration": 0.364,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 198.0,
  "shape_class": "sustained"
 },
 "length_m": 530.143814481662,
 "start_elevation_m": 59.5992002907626,
 "end_elevation_m": 117.51887290621997,
 "endpoint_gain_m": 57.919672615457365,
 "overall_gradient_pct": 10.925275563591592,
 "accumulated_ascent_m": 58.62855785589519,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.866391135986134,
   "start_distance_m": 479.0,
   "end_distance_m": 484.0,
   "midpoint_distance_m": 481.5,
   "start_elevation_m": 111.8510310385754,
   "end_elevation_m": 113.0943505953747,
   "start_xy": [
    900135.8014204918,
    6247280.919922376
   ],
   "end_xy": [
    900136.2023288038,
    6247285.868127385
   ]
  },
  "max_10m": {
   "gradient_pct": 22.82415394847888,
   "start_distance_m": 477.0,
   "end_distance_m": 487.0,
   "midpoint_distance_m": 482.0,
   "start_elevation_m": 111.4655040711866,
   "end_elevation_m": 113.74791946603449,
   "start_xy": [
    900135.2554570307,
    6247278.995883942
   ],
   "end_xy": [
    900135.4391779379,
    6247288.70503291
   ]
  },
  "max_20m": {
   "gradient_pct": 20.13562899259064,
   "start_distance_m": 264.0,
   "end_distance_m": 284.0,
   "midpoint_distance_m": 274.0,
   "start_elevation_m": 86.85655806258958,
   "end_elevation_m": 90.88368386110771,
   "start_xy": [
    899975.2815522903,
    6247200.11271139
   ],
   "end_xy": [
    899988.8333991695,
    6247214.791218498
   ]
  },
  "max_25m": {
   "gradient_pct": 20.06343886958689,
   "start_distance_m": 262.0,
   "end_distance_m": 287.0,
   "midpoint_distance_m": 274.5,
   "start_elevation_m": 86.47723858894295,
   "end_elevation_m": 91.49309830633968,
   "start_xy": [
    899973.651186186,
    6247198.954304568
   ],
   "end_xy": [
    899991.2002116678,
    6247216.634511095
   ]
  },
  "max_50m": {
   "gradient_pct": 18.252117778458512,
   "start_distance_m": 247.0,
   "end_distance_m": 297.0,
   "midpoint_distance_m": 272.0,
   "start_elevation_m": 84.00059194395436,
   "end_elevation_m": 93.12665083318362,
   "start_xy": [
    899960.0725337659,
    6247195.699009746
   ],
   "end_xy": [
    899999.8559555397,
    6247221.324198715
   ]
  },
  "max_100m": {
   "gradient_pct": 16.897211137455542,
   "start_distance_m": 207.0,
   "end_distance_m": 307.0,
   "midpoint_distance_m": 257.0,
   "start_elevation_m": 77.69615917336495,
   "end_elevation_m": 94.59337031082049,
   "start_xy": [
    899921.6821028587,
    6247206.922144409
   ],
   "end_xy": [
    900009.7317917917,
    6247221.325332706
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.8014570350130157,
   "start_distance_m": 356.0,
   "end_distance_m": 361.0,
   "midpoint_distance_m": 358.5,
   "start_elevation_m": 100.36038877999076,
   "end_elevation_m": 100.3203159282401,
   "start_xy": [
    900057.24095049,
    6247232.091146939
   ],
   "end_xy": [
    900062.1803288675,
    6247231.350808142
   ]
  },
  "min_10m": {
   "gradient_pct": 0.6156326460536832,
   "start_distance_m": 517.0,
   "end_distance_m": 527.0,
   "midpoint_distance_m": 522.0,
   "start_elevation_m": 117.39931376145324,
   "end_elevation_m": 117.46087702605861,
   "start_xy": [
    900108.9549471235,
    6247280.13544501
   ],
   "end_xy": [
    900100.7614133505,
    6247274.576225908
   ]
  },
  "min_20m": {
   "gradient_pct": 1.887020289782555,
   "start_distance_m": 510.0,
   "end_distance_m": 530.0,
   "midpoint_distance_m": 520.0,
   "start_elevation_m": 117.1362700453689,
   "end_elevation_m": 117.51367410332541,
   "start_xy": [
    900114.7506347853,
    6247283.9983395515
   ],
   "end_xy": [
    900098.0490268209,
    6247273.294446163
   ]
  },
  "min_25m": {
   "gradient_pct": 3.4240637038738555,
   "start_distance_m": 505.0,
   "end_distance_m": 530.0,
   "midpoint_distance_m": 517.5,
   "start_elevation_m": 116.65765817735695,
   "end_elevation_m": 117.51367410332541,
   "start_xy": [
    900119.3135224907,
    6247286.021078571
   ],
   "end_xy": [
    900098.0490268209,
    6247273.294446163
   ]
  },
  "min_50m": {
   "gradient_pct": 4.9105721745507935,
   "start_distance_m": 353.0,
   "end_distance_m": 403.0,
   "midpoint_distance_m": 378.0,
   "start_elevation_m": 100.22823858362968,
   "end_elevation_m": 102.68352467090507,
   "start_xy": [
    900054.2409788655,
    6247232.078098857
   ],
   "end_xy": [
    900103.8996625534,
    6247227.196236315
   ]
  },
  "min_100m": {
   "gradient_pct": 6.3949757288095705,
   "start_distance_m": 334.0,
   "end_distance_m": 434.0,
   "midpoint_distance_m": 384.0,
   "start_elevation_m": 98.05637989418668,
   "end_elevation_m": 104.45135562299625,
   "start_xy": [
    900035.6372996193,
    6247228.7326542055
   ],
   "end_xy": [
    900128.7320540135,
    6247236.748917173
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.429393727143434,
   "start_distance_m": 479.0,
   "end_distance_m": 481.0,
   "midpoint_distance_m": 480.0,
   "start_elevation_m": 111.8510310385754,
   "end_elevation_m": 112.35961891311827,
   "start_xy": [
    900135.8014204918,
    6247280.919922376
   ],
   "end_xy": [
    900136.1487554727,
    6247282.879277842
   ]
  },
  "max_3m": {
   "gradient_pct": 25.230655527181984,
   "start_distance_m": 480.0,
   "end_distance_m": 483.0,
   "midpoint_distance_m": 481.5,
   "start_elevation_m": 112.10627607730855,
   "end_elevation_m": 112.86319574312401,
   "start_xy": [
    900136.0733871437,
    6247281.882122079
   ],
   "end_xy": [
    900136.2994921309,
    6247284.873589368
   ]
  }
 },
 "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": 0.12,
   "obstruction_max_height_m": 10.51,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "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-pr3",
   "road_pbf": "block-batch-fr-pr3.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_E899-N6247_0m5@21LHD7PQ-2025-03-14.tif",
   "data/cache/fr/ign-lidarhd_dtm_E900-N6247_0m5@21LHD7PQ-2025-03-14.tif"
  ],
  "calculated_at": "2026-09-25T09:19:17+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pr3.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pr3",
  "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": [
   "E899-N6247",
   "E900-N6247"
  ],
  "elevation_blocks": [
   "21LHD7PQ@2025-03-14"
  ],
  "ign_dalles": [
   "LHD_FXX_0899_6248_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0900_6248_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD7PQ"
  ],
  "ign_editions": [
   "2025-03-14"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0899_6248_MNT_O_0M50_LAMB93_IGN69": "2025-03-14",
   "LHD_FXX_0900_6248_MNT_O_0M50_LAMB93_IGN69": "2025-03-14"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 3,
  "carriageway": {
   "stations": 28,
   "stations_resolved": 28,
   "width_median_m": 5.0,
   "width_p10_m": 2.85,
   "width_min_m": 1.5,
   "width_max_m": 9.25,
   "bounded_share": 0.464,
   "unbounded_share": 0.536,
   "confidence_median": 0.0,
   "width_median_bounded_m": 3.5,
   "window_m": [
    262.0,
    287.0
   ],
   "width_at_max25_m": 3.5,
   "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": 28,
    "stations_resolved": 28,
    "width_median_m": 3.25,
    "width_p10_m": 0.93,
    "width_min_m": 0.5,
    "width_max_m": 10.0,
    "bounded_share": 0.929,
    "unbounded_share": 0.071,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.0,
    "window_m": [
     262.0,
     287.0
    ],
    "width_at_max25_m": 1.75,
    "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": "Marseille",
  "county": "Bouches-du-Rh\u00f4ne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}