{
 "ocl_version": "0.1.0",
 "name": "Route de la Martini\u00e8re",
 "slug": "route-de-la-martiniere",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.78343732525343,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 64.0,
   "end_distance_m": 66.0,
   "start_elevation_m": 85.68386084098445,
   "end_elevation_m": 86.13952958748952,
   "min_gradient_pct": -9.613531952407328
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 22.05565309290307,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 74.0,
   "end_distance_m": 77.0,
   "start_elevation_m": 87.76518898062132,
   "end_elevation_m": 88.42685857340841,
   "min_gradient_pct": -4.442964258424335
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.783659616803277,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 72.0,
   "end_distance_m": 77.0,
   "start_elevation_m": 87.33767559256825,
   "end_elevation_m": 88.42685857340841,
   "min_gradient_pct": -1.23822815117137
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.34759155938397,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 72.0,
   "end_distance_m": 82.0,
   "start_elevation_m": 87.33767559256825,
   "end_elevation_m": 89.47243474850664,
   "min_gradient_pct": 1.1233878330533287
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.95035854952343,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 65.0,
   "end_distance_m": 85.0,
   "start_elevation_m": 85.89897390801752,
   "end_elevation_m": 90.08904561792221,
   "min_gradient_pct": 1.3354932554776155
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.961850129507237,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 71.0,
   "end_distance_m": 96.0,
   "start_elevation_m": 87.12243067393777,
   "end_elevation_m": 92.36289320631458,
   "min_gradient_pct": 1.4219691225132465
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.727506062131425,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 54.0,
   "end_distance_m": 104.0,
   "start_elevation_m": 83.66751118293793,
   "end_elevation_m": 94.03126421400364,
   "min_gradient_pct": 2.003808711307613
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.17447211220309,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 23.0,
   "end_distance_m": 123.0,
   "start_elevation_m": 78.31539522808886,
   "end_elevation_m": 97.48986734029195,
   "min_gradient_pct": 2.797829997424955
  }
 ],
 "shape": {
  "ascent_concentration": 0.473,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 154.0,
  "shape_class": "stepped"
 },
 "length_m": 499.40000000024344,
 "start_elevation_m": 75.21674137744013,
 "end_elevation_m": 122.83862955847232,
 "endpoint_gain_m": 47.62188818103219,
 "overall_gradient_pct": 9.535820620946932,
 "accumulated_ascent_m": 48.055953020468976,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.783659616803277,
   "start_distance_m": 72.0,
   "end_distance_m": 77.0,
   "midpoint_distance_m": 74.5,
   "start_elevation_m": 87.33767559256825,
   "end_elevation_m": 88.42685857340841,
   "start_xy": [
    517906.23095075076,
    6747981.048112879
   ],
   "end_xy": [
    517910.0831103749,
    6747984.235724246
   ]
  },
  "max_10m": {
   "gradient_pct": 21.34759155938397,
   "start_distance_m": 72.0,
   "end_distance_m": 82.0,
   "midpoint_distance_m": 77.0,
   "start_elevation_m": 87.33767559256825,
   "end_elevation_m": 89.47243474850664,
   "start_xy": [
    517906.23095075076,
    6747981.048112879
   ],
   "end_xy": [
    517913.93526999914,
    6747987.423335614
   ]
  },
  "max_20m": {
   "gradient_pct": 20.95035854952343,
   "start_distance_m": 65.0,
   "end_distance_m": 85.0,
   "midpoint_distance_m": 75.0,
   "start_elevation_m": 85.89897390801752,
   "end_elevation_m": 90.08904561792221,
   "start_xy": [
    517900.8379272769,
    6747976.585456965
   ],
   "end_xy": [
    517916.2465657736,
    6747989.335902434
   ]
  },
  "max_25m": {
   "gradient_pct": 20.961850129507237,
   "start_distance_m": 71.0,
   "end_distance_m": 96.0,
   "midpoint_distance_m": 83.5,
   "start_elevation_m": 87.12243067393777,
   "end_elevation_m": 92.36289320631458,
   "start_xy": [
    517905.4605188259,
    6747980.410590605
   ],
   "end_xy": [
    517924.7213169468,
    6747996.348647443
   ]
  },
  "max_50m": {
   "gradient_pct": 20.727506062131425,
   "start_distance_m": 54.0,
   "end_distance_m": 104.0,
   "midpoint_distance_m": 79.0,
   "start_elevation_m": 83.66751118293793,
   "end_elevation_m": 94.03126421400364,
   "start_xy": [
    517892.36317610374,
    6747969.572711956
   ],
   "end_xy": [
    517930.8847723455,
    6748001.44882563
   ]
  },
  "max_100m": {
   "gradient_pct": 19.17447211220309,
   "start_distance_m": 23.0,
   "end_distance_m": 123.0,
   "midpoint_distance_m": 73.0,
   "start_elevation_m": 78.31539522808886,
   "end_elevation_m": 97.48986734029195,
   "start_xy": [
    517865.0778643985,
    6747956.79382805
   ],
   "end_xy": [
    517945.52297891735,
    6748013.561748827
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.23822815117137,
   "start_distance_m": 324.0,
   "end_distance_m": 329.0,
   "midpoint_distance_m": 326.5,
   "start_elevation_m": 116.54235072541135,
   "end_elevation_m": 116.48043931785278,
   "start_xy": [
    518085.3007277054,
    6748157.851913331
   ],
   "end_xy": [
    518088.60664536303,
    6748161.603034289
   ]
  },
  "min_10m": {
   "gradient_pct": 1.1233878330533287,
   "start_distance_m": 439.0,
   "end_distance_m": 449.0,
   "midpoint_distance_m": 444.0,
   "start_elevation_m": 121.39414782604275,
   "end_elevation_m": 121.50648660934809,
   "start_xy": [
    518160.8617790033,
    6748244.534058957
   ],
   "end_xy": [
    518167.24565811286,
    6748252.231206968
   ]
  },
  "min_20m": {
   "gradient_pct": 1.3354932554776155,
   "start_distance_m": 443.0,
   "end_distance_m": 463.0,
   "midpoint_distance_m": 453.0,
   "start_elevation_m": 121.46494012150895,
   "end_elevation_m": 121.73203877260447,
   "start_xy": [
    518163.41533064714,
    6748247.612918162
   ],
   "end_xy": [
    518176.18308886624,
    6748263.007214185
   ]
  },
  "min_25m": {
   "gradient_pct": 1.4219691225132465,
   "start_distance_m": 436.0,
   "end_distance_m": 461.0,
   "midpoint_distance_m": 448.5,
   "start_elevation_m": 121.33785078095964,
   "end_elevation_m": 121.69334306158795,
   "start_xy": [
    518158.9466152704,
    6748242.224914554
   ],
   "end_xy": [
    518174.9063130443,
    6748261.467784583
   ]
  },
  "min_50m": {
   "gradient_pct": 2.003808711307613,
   "start_distance_m": 427.0,
   "end_distance_m": 477.0,
   "midpoint_distance_m": 452.0,
   "start_elevation_m": 121.10032568245644,
   "end_elevation_m": 122.10223003811025,
   "start_xy": [
    518153.20112407184,
    6748235.297481343
   ],
   "end_xy": [
    518185.1205196196,
    6748273.783221401
   ]
  },
  "min_100m": {
   "gradient_pct": 2.797829997424955,
   "start_distance_m": 399.0,
   "end_distance_m": 499.0,
   "midpoint_distance_m": 449.0,
   "start_elevation_m": 120.02616602932453,
   "end_elevation_m": 122.82399602674948,
   "start_xy": [
    518134.8841336463,
    6748214.123450051
   ],
   "end_xy": [
    518199.1650536607,
    6748290.7169470275
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.78343732525343,
   "start_distance_m": 64.0,
   "end_distance_m": 66.0,
   "midpoint_distance_m": 65.0,
   "start_elevation_m": 85.68386084098445,
   "end_elevation_m": 86.13952958748952,
   "start_xy": [
    517900.0674953521,
    6747975.947934691
   ],
   "end_xy": [
    517901.60835920175,
    6747977.222979238
   ]
  },
  "max_3m": {
   "gradient_pct": 22.05565309290307,
   "start_distance_m": 74.0,
   "end_distance_m": 77.0,
   "midpoint_distance_m": 75.5,
   "start_elevation_m": 87.76518898062132,
   "end_elevation_m": 88.42685857340841,
   "start_xy": [
    517907.77181460045,
    6747982.323157426
   ],
   "end_xy": [
    517910.0831103749,
    6747984.235724246
   ]
  }
 },
 "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": 0.547,
   "obstruction_max_height_m": 22.94,
   "flagged_windows_m": [
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "11607044e533e467c5c753c7fffd2d09371a473e",
   "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-no6",
   "road_pbf": "block-batch-fr-no6.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": "sha256:396cc16291f947a7"
  },
  "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_E517-N6747_0m5@23LHD2HG-2024-12-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E517-N6748_0m5@23LHD2HG-2024-12-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E518-N6747_0m5@23LHD2HG-2024-12-20.tif",
   "data/cache/fr/ign-lidarhd_dtm_E518-N6748_0m5@23LHD2HG-2024-12-20.tif"
  ],
  "calculated_at": "2026-09-26T01:03:58+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-no6.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-no6",
  "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": [
   "E517-N6747",
   "E517-N6748",
   "E518-N6747",
   "E518-N6748"
  ],
  "elevation_blocks": [
   "23LHD2HG@2024-12-20"
  ],
  "ign_dalles": [
   "LHD_FXX_0517_6748_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0517_6749_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0518_6748_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0518_6749_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "23LHD2HG"
  ],
  "ign_editions": [
   "2024-12-20"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0517_6748_MNT_O_0M50_LAMB93_IGN69": "2024-12-20",
   "LHD_FXX_0517_6749_MNT_O_0M50_LAMB93_IGN69": "2024-12-20",
   "LHD_FXX_0518_6748_MNT_O_0M50_LAMB93_IGN69": "2024-12-20",
   "LHD_FXX_0518_6749_MNT_O_0M50_LAMB93_IGN69": "2024-12-20"
  },
  "route_cut_m": 499.4,
  "climb_origin": "discovered",
  "structure_own_ways": 1,
  "carriageway": {
   "stations": 26,
   "stations_resolved": 26,
   "width_median_m": 3.62,
   "width_p10_m": 2.25,
   "width_min_m": 1.25,
   "width_max_m": 10.5,
   "bounded_share": 0.154,
   "unbounded_share": 0.846,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.0,
   "window_m": [
    71.0,
    96.0
   ],
   "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": 26,
    "stations_resolved": 26,
    "width_median_m": 2.62,
    "width_p10_m": 0.5,
    "width_min_m": 0.5,
    "width_max_m": 11.25,
    "bounded_share": 0.962,
    "unbounded_share": 0.038,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.5,
    "window_m": [
     71.0,
     96.0
    ],
    "width_at_max25_m": 5.25,
    "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": "Courdemanche",
  "county": "Sarthe",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}