{
 "ocl_version": "0.1.0",
 "name": "Chemin du Moulin",
 "slug": "chemin-du-moulin-4",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 34.02832628914325,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 747.0,
   "end_distance_m": 749.0,
   "start_elevation_m": 387.34808965167224,
   "end_elevation_m": 388.0286561774551,
   "min_gradient_pct": -17.071644772201466
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 31.726462804510902,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 747.0,
   "end_distance_m": 750.0,
   "start_elevation_m": 387.34808965167224,
   "end_elevation_m": 388.29988353580757,
   "min_gradient_pct": -16.846506422253544
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 27.860273921403405,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 746.0,
   "end_distance_m": 751.0,
   "start_elevation_m": 387.0829817940927,
   "end_elevation_m": 388.47599549016286,
   "min_gradient_pct": -15.514718983325793
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.638112589617776,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 742.0,
   "end_distance_m": 752.0,
   "start_elevation_m": 386.12294651764694,
   "end_elevation_m": 388.6867577766087,
   "min_gradient_pct": -14.50902295929609
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.595871795771302,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 732.0,
   "end_distance_m": 752.0,
   "start_elevation_m": 384.36758341745445,
   "end_elevation_m": 388.6867577766087,
   "min_gradient_pct": -13.717873904890325
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.376433218715647,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 727.0,
   "end_distance_m": 752.0,
   "start_elevation_m": 383.3426494719298,
   "end_elevation_m": 388.6867577766087,
   "min_gradient_pct": -13.480161007341849
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.974735140223856,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 705.0,
   "end_distance_m": 755.0,
   "start_elevation_m": 379.5706863847786,
   "end_elevation_m": 389.0580539548905,
   "min_gradient_pct": -10.792818618589763
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.41475125031866,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 706.0,
   "end_distance_m": 806.0,
   "start_elevation_m": 379.64213291473413,
   "end_elevation_m": 396.0568841650528,
   "min_gradient_pct": -7.516554075256408
  }
 ],
 "shape": {
  "ascent_concentration": 0.468,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 116.0,
  "shape_class": "stepped"
 },
 "length_m": 1715.499069574924,
 "start_elevation_m": 330.1599317806474,
 "end_elevation_m": 426.00414088793866,
 "endpoint_gain_m": 95.84420910729125,
 "overall_gradient_pct": 5.586957801792341,
 "accumulated_ascent_m": 107.45608594869384,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 27.860273921403405,
   "start_distance_m": 746.0,
   "end_distance_m": 751.0,
   "midpoint_distance_m": 748.5,
   "start_elevation_m": 387.0829817940927,
   "end_elevation_m": 388.47599549016286,
   "start_xy": [
    904944.4439995341,
    6262009.04145797
   ],
   "end_xy": [
    904941.9721693903,
    6262004.695188795
   ]
  },
  "max_10m": {
   "gradient_pct": 25.638112589617776,
   "start_distance_m": 742.0,
   "end_distance_m": 752.0,
   "midpoint_distance_m": 747.0,
   "start_elevation_m": 386.12294651764694,
   "end_elevation_m": 388.6867577766087,
   "start_xy": [
    904946.7011342074,
    6262012.34348492
   ],
   "end_xy": [
    904941.4778033615,
    6262003.82593496
   ]
  },
  "max_20m": {
   "gradient_pct": 21.595871795771302,
   "start_distance_m": 732.0,
   "end_distance_m": 752.0,
   "midpoint_distance_m": 742.0,
   "start_elevation_m": 384.36758341745445,
   "end_elevation_m": 388.6867577766087,
   "start_xy": [
    904952.3565690671,
    6262020.590669686
   ],
   "end_xy": [
    904941.4778033615,
    6262003.82593496
   ]
  },
  "max_25m": {
   "gradient_pct": 21.376433218715647,
   "start_distance_m": 727.0,
   "end_distance_m": 752.0,
   "midpoint_distance_m": 739.5,
   "start_elevation_m": 383.3426494719298,
   "end_elevation_m": 388.6867577766087,
   "start_xy": [
    904955.184286497,
    6262024.714262068
   ],
   "end_xy": [
    904941.4778033615,
    6262003.82593496
   ]
  },
  "max_50m": {
   "gradient_pct": 18.974735140223856,
   "start_distance_m": 705.0,
   "end_distance_m": 755.0,
   "midpoint_distance_m": 730.0,
   "start_elevation_m": 379.5706863847786,
   "end_elevation_m": 389.0580539548905,
   "start_xy": [
    904967.6574683512,
    6262042.836540425
   ],
   "end_xy": [
    904939.9947052752,
    6262001.2181734545
   ]
  },
  "max_100m": {
   "gradient_pct": 16.41475125031866,
   "start_distance_m": 706.0,
   "end_distance_m": 806.0,
   "midpoint_distance_m": 756.0,
   "start_elevation_m": 379.64213291473413,
   "end_elevation_m": 396.0568841650528,
   "start_xy": [
    904967.0877807254,
    6262042.014679118
   ],
   "end_xy": [
    904916.0348374798,
    6261956.218491845
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -15.514718983325793,
   "start_distance_m": 1214.0,
   "end_distance_m": 1219.0,
   "midpoint_distance_m": 1216.5,
   "start_elevation_m": 410.1431916533142,
   "end_elevation_m": 409.3674557041479,
   "start_xy": [
    904748.6341818313,
    6261589.133268513
   ],
   "end_xy": [
    904746.2507549259,
    6261584.737898654
   ]
  },
  "min_10m": {
   "gradient_pct": -14.50902295929609,
   "start_distance_m": 1212.0,
   "end_distance_m": 1222.0,
   "midpoint_distance_m": 1217.0,
   "start_elevation_m": 410.395639658708,
   "end_elevation_m": 408.94473736277837,
   "start_xy": [
    904749.5875525934,
    6261590.891416456
   ],
   "end_xy": [
    904744.8206987827,
    6261582.1006767405
   ]
  },
  "min_20m": {
   "gradient_pct": -13.717873904890325,
   "start_distance_m": 1207.0,
   "end_distance_m": 1227.0,
   "midpoint_distance_m": 1217.0,
   "start_elevation_m": 411.0568268023345,
   "end_elevation_m": 408.31325202135645,
   "start_xy": [
    904751.9709794988,
    6261595.286786313
   ],
   "end_xy": [
    904742.4369231042,
    6261577.705498429
   ]
  },
  "min_25m": {
   "gradient_pct": -13.480161007341849,
   "start_distance_m": 1202.0,
   "end_distance_m": 1227.0,
   "midpoint_distance_m": 1214.5,
   "start_elevation_m": 411.6832922731919,
   "end_elevation_m": 408.31325202135645,
   "start_xy": [
    904754.3544064042,
    6261599.682156171
   ],
   "end_xy": [
    904742.4369231042,
    6261577.705498429
   ]
  },
  "min_50m": {
   "gradient_pct": -10.792818618589763,
   "start_distance_m": 1177.0,
   "end_distance_m": 1227.0,
   "midpoint_distance_m": 1202.0,
   "start_elevation_m": 413.70966133065133,
   "end_elevation_m": 408.31325202135645,
   "start_xy": [
    904762.433928252,
    6261623.332984195
   ],
   "end_xy": [
    904742.4369231042,
    6261577.705498429
   ]
  },
  "min_100m": {
   "gradient_pct": -7.516554075256408,
   "start_distance_m": 1173.0,
   "end_distance_m": 1273.0,
   "midpoint_distance_m": 1223.0,
   "start_elevation_m": 414.025735060687,
   "end_elevation_m": 406.5091809854306,
   "start_xy": [
    904763.7140536512,
    6261627.122612008
   ],
   "end_xy": [
    904715.6550419049,
    6261542.520718405
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 34.02832628914325,
   "start_distance_m": 747.0,
   "end_distance_m": 749.0,
   "midpoint_distance_m": 748.0,
   "start_elevation_m": 387.34808965167224,
   "end_elevation_m": 388.0286561774551,
   "start_xy": [
    904943.9496335053,
    6262008.172204135
   ],
   "end_xy": [
    904942.9609014478,
    6262006.433696465
   ]
  },
  "max_3m": {
   "gradient_pct": 31.726462804510902,
   "start_distance_m": 747.0,
   "end_distance_m": 750.0,
   "midpoint_distance_m": 748.5,
   "start_elevation_m": 387.34808965167224,
   "end_elevation_m": 388.29988353580757,
   "start_xy": [
    904943.9496335053,
    6262008.172204135
   ],
   "end_xy": [
    904942.466535419,
    6262005.56444263
   ]
  }
 },
 "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": 0.386,
   "obstruction_max_height_m": 18.67,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "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_E904-N6261_0m5@21LHD7PQ-2025-03-14.tif",
   "data/cache/fr/ign-lidarhd_dtm_E904-N6262_0m5@21LHD7PQ-2025-03-14.tif",
   "data/cache/fr/ign-lidarhd_dtm_E905-N6261_0m5@21LHD7PQ-2025-03-14.tif",
   "data/cache/fr/ign-lidarhd_dtm_E905-N6262_0m5@21LHD7PQ-2025-03-14.tif"
  ],
  "calculated_at": "2026-09-25T09:20:08+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": [
   "E904-N6261",
   "E904-N6262",
   "E905-N6261",
   "E905-N6262"
  ],
  "elevation_blocks": [
   "21LHD7PQ@2025-03-14"
  ],
  "ign_dalles": [
   "LHD_FXX_0904_6262_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0904_6263_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0905_6262_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0905_6263_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD7PQ"
  ],
  "ign_editions": [
   "2025-03-14"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0904_6262_MNT_O_0M50_LAMB93_IGN69": "2025-03-14",
   "LHD_FXX_0904_6263_MNT_O_0M50_LAMB93_IGN69": "2025-03-14",
   "LHD_FXX_0905_6262_MNT_O_0M50_LAMB93_IGN69": "2025-03-14",
   "LHD_FXX_0905_6263_MNT_O_0M50_LAMB93_IGN69": "2025-03-14"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 3,
  "carriageway": {
   "stations": 75,
   "stations_resolved": 75,
   "width_median_m": 6.25,
   "width_p10_m": 3.75,
   "width_min_m": 2.0,
   "width_max_m": 12.0,
   "bounded_share": 0.24,
   "unbounded_share": 0.76,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.5,
   "window_m": [
    727.0,
    752.0
   ],
   "width_at_max25_m": 4.25,
   "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": 75,
    "stations_resolved": 75,
    "width_median_m": 2.5,
    "width_p10_m": 0.6,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.88,
    "unbounded_share": 0.12,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.25,
    "window_m": [
     727.0,
     752.0
    ],
    "width_at_max25_m": 2.25,
    "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": "Gr\u00e9asque",
  "county": "Bouches-du-Rh\u00f4ne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}