{
 "ocl_version": "0.1.0",
 "name": "Chemin Maisterre",
 "slug": "chemin-maisterre",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.559643143620292,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 530.0,
   "end_distance_m": 532.0,
   "start_elevation_m": 323.87015169829414,
   "end_elevation_m": 324.38134456116654,
   "min_gradient_pct": -5.759039935151122
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.486537087409488,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 529.0,
   "end_distance_m": 532.0,
   "start_elevation_m": 323.64674844854426,
   "end_elevation_m": 324.38134456116654,
   "min_gradient_pct": -5.1258705460384135
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 23.85890665380316,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 534.0,
   "end_distance_m": 539.0,
   "start_elevation_m": 324.7651061172844,
   "end_elevation_m": 325.95805144997456,
   "min_gradient_pct": -4.575088626021397
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.3629084207638,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 534.0,
   "end_distance_m": 544.0,
   "start_elevation_m": 324.7651061172844,
   "end_elevation_m": 327.1013969593608,
   "min_gradient_pct": -4.13292184964007
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.728033572435322,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 526.0,
   "end_distance_m": 546.0,
   "start_elevation_m": 322.9815797198395,
   "end_elevation_m": 327.52718643432655,
   "min_gradient_pct": -3.2695094677987413
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.505650689422737,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 526.0,
   "end_distance_m": 551.0,
   "start_elevation_m": 322.9815797198395,
   "end_elevation_m": 328.6079923921952,
   "min_gradient_pct": -2.927217395631942
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.05408055359885,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 512.0,
   "end_distance_m": 562.0,
   "start_elevation_m": 320.19994997712587,
   "end_elevation_m": 330.7269902539253,
   "min_gradient_pct": -1.7244240022872646
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.3746589990007,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 461.0,
   "end_distance_m": 561.0,
   "start_elevation_m": 311.20296262284677,
   "end_elevation_m": 330.57762162184747,
   "min_gradient_pct": 0.26299832815720947
  }
 ],
 "shape": {
  "ascent_concentration": 0.434,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 279.0,
  "shape_class": "sustained"
 },
 "length_m": 1001.0000000000568,
 "start_elevation_m": 289.67883049072384,
 "end_elevation_m": 388.51175606583615,
 "endpoint_gain_m": 98.83292557511231,
 "overall_gradient_pct": 9.873419138372297,
 "accumulated_ascent_m": 100.14917639484037,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 23.85890665380316,
   "start_distance_m": 534.0,
   "end_distance_m": 539.0,
   "midpoint_distance_m": 536.5,
   "start_elevation_m": 324.7651061172844,
   "end_elevation_m": 325.95805144997456,
   "start_xy": [
    395636.51522513037,
    6236105.996825505
   ],
   "end_xy": [
    395639.6551139153,
    6236109.887981942
   ]
  },
  "max_10m": {
   "gradient_pct": 23.3629084207638,
   "start_distance_m": 534.0,
   "end_distance_m": 544.0,
   "midpoint_distance_m": 539.0,
   "start_elevation_m": 324.7651061172844,
   "end_elevation_m": 327.1013969593608,
   "start_xy": [
    395636.51522513037,
    6236105.996825505
   ],
   "end_xy": [
    395642.78001698846,
    6236113.78769695
   ]
  },
  "max_20m": {
   "gradient_pct": 22.728033572435322,
   "start_distance_m": 526.0,
   "end_distance_m": 546.0,
   "midpoint_distance_m": 536.0,
   "start_elevation_m": 322.9815797198395,
   "end_elevation_m": 327.52718643432655,
   "start_xy": [
    395631.49140307447,
    6236099.770975206
   ],
   "end_xy": [
    395643.48244624736,
    6236115.660286904
   ]
  },
  "max_25m": {
   "gradient_pct": 22.505650689422737,
   "start_distance_m": 526.0,
   "end_distance_m": 551.0,
   "midpoint_distance_m": 538.5,
   "start_elevation_m": 322.9815797198395,
   "end_elevation_m": 328.6079923921952,
   "start_xy": [
    395631.49140307447,
    6236099.770975206
   ],
   "end_xy": [
    395645.2385193946,
    6236120.34176179
   ]
  },
  "max_50m": {
   "gradient_pct": 21.05408055359885,
   "start_distance_m": 512.0,
   "end_distance_m": 562.0,
   "midpoint_distance_m": 537.0,
   "start_elevation_m": 320.19994997712587,
   "end_elevation_m": 330.7269902539253,
   "start_xy": [
    395620.4329577622,
    6236091.34995
   ],
   "end_xy": [
    395649.10188031854,
    6236130.641006538
   ]
  },
  "max_100m": {
   "gradient_pct": 19.3746589990007,
   "start_distance_m": 461.0,
   "end_distance_m": 561.0,
   "midpoint_distance_m": 511.0,
   "start_elevation_m": 311.20296262284677,
   "end_elevation_m": 330.57762162184747,
   "start_xy": [
    395571.3046152631,
    6236079.400475413
   ],
   "end_xy": [
    395648.75066568906,
    6236129.70471156
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -4.575088626021397,
   "start_distance_m": 224.0,
   "end_distance_m": 229.0,
   "midpoint_distance_m": 226.5,
   "start_elevation_m": 296.7443909706174,
   "end_elevation_m": 296.51563653931635,
   "start_xy": [
    395614.19171121303,
    6235988.4627911905
   ],
   "end_xy": [
    395609.6324773965,
    6235990.51544484
   ]
  },
  "min_10m": {
   "gradient_pct": -4.13292184964007,
   "start_distance_m": 222.0,
   "end_distance_m": 232.0,
   "midpoint_distance_m": 227.0,
   "start_elevation_m": 296.81423176354946,
   "end_elevation_m": 296.40093957858545,
   "start_xy": [
    395616.01540473965,
    6235987.64172973
   ],
   "end_xy": [
    395606.8969371066,
    6235991.74703703
   ]
  },
  "min_20m": {
   "gradient_pct": -3.2695094677987413,
   "start_distance_m": 215.0,
   "end_distance_m": 235.0,
   "midpoint_distance_m": 225.0,
   "start_elevation_m": 296.97986282743557,
   "end_elevation_m": 296.3259609338758,
   "start_xy": [
    395622.3983320828,
    6235984.76801462
   ],
   "end_xy": [
    395604.1613968167,
    6235992.97862922
   ]
  },
  "min_25m": {
   "gradient_pct": -2.927217395631942,
   "start_distance_m": 213.0,
   "end_distance_m": 238.0,
   "midpoint_distance_m": 225.5,
   "start_elevation_m": 297.0091085209286,
   "end_elevation_m": 296.2773041720206,
   "start_xy": [
    395624.22202560934,
    6235983.946953161
   ],
   "end_xy": [
    395601.4258565268,
    6235994.21022141
   ]
  },
  "min_50m": {
   "gradient_pct": -1.7244240022872646,
   "start_distance_m": 195.0,
   "end_distance_m": 245.0,
   "midpoint_distance_m": 220.0,
   "start_elevation_m": 297.0676952659463,
   "end_elevation_m": 296.2054832648027,
   "start_xy": [
    395641.60613257147,
    6235979.3705978915
   ],
   "end_xy": [
    395595.0429291837,
    6235997.08393652
   ]
  },
  "min_100m": {
   "gradient_pct": 0.26299832815720947,
   "start_distance_m": 192.0,
   "end_distance_m": 292.0,
   "midpoint_distance_m": 242.0,
   "start_elevation_m": 297.01124558171404,
   "end_elevation_m": 297.27424390987125,
   "start_xy": [
    395644.5190095015,
    6235978.652859785
   ],
   "end_xy": [
    395551.0175492217,
    6236013.190347353
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.559643143620292,
   "start_distance_m": 530.0,
   "end_distance_m": 532.0,
   "midpoint_distance_m": 531.0,
   "start_elevation_m": 323.87015169829414,
   "end_elevation_m": 324.38134456116654,
   "start_xy": [
    395634.0033141024,
    6236102.883900356
   ],
   "end_xy": [
    395635.2592696164,
    6236104.44036293
   ]
  },
  "max_3m": {
   "gradient_pct": 24.486537087409488,
   "start_distance_m": 529.0,
   "end_distance_m": 532.0,
   "midpoint_distance_m": 530.5,
   "start_elevation_m": 323.64674844854426,
   "end_elevation_m": 324.38134456116654,
   "start_xy": [
    395633.3753363454,
    6236102.105669068
   ],
   "end_xy": [
    395635.2592696164,
    6236104.44036293
   ]
  }
 },
 "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": 0.149,
   "obstruction_max_height_m": 27.42,
   "flagged_windows_m": [
    2,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": []
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "06fa4c370391597f015858e97dcf01ca2f5b3640",
   "code_git_dirty": "false",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:0048c2bbb24ab95e",
   "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-pyr1",
   "road_pbf": "block-batch-fr-pyr1.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:c54ac68b3f57b41b"
  },
  "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_E395-N6235_0m5@21LHD1FQ-2025-09-15.tif",
   "data/cache/fr/ign-lidarhd_dtm_E395-N6236_0m5@21LHD1FQ-2025-09-15.tif"
  ],
  "calculated_at": "2026-09-20T06:50:16+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pyr1.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pyr1",
  "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": [
   "E395-N6235",
   "E395-N6236"
  ],
  "elevation_blocks": [
   "21LHD1FQ@2025-09-15"
  ],
  "ign_dalles": [
   "LHD_FXX_0395_6236_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0395_6237_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD1FQ"
  ],
  "ign_editions": [
   "2025-09-15"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0395_6236_MNT_O_0M50_LAMB93_IGN69": "2025-09-15",
   "LHD_FXX_0395_6237_MNT_O_0M50_LAMB93_IGN69": "2025-09-15"
  },
  "route_summit_trim_m": 240.3,
  "route_summit_trim_loss_m": 8.6,
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 47,
   "stations_resolved": 47,
   "width_median_m": 5.25,
   "width_p10_m": 3.9,
   "width_min_m": 1.0,
   "width_max_m": 11.0,
   "bounded_share": 0.255,
   "unbounded_share": 0.745,
   "confidence_median": 0.0,
   "width_median_bounded_m": 5.25,
   "window_m": [
    526.0,
    551.0
   ],
   "width_at_max25_m": 4.5,
   "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": 47,
    "stations_resolved": 47,
    "width_median_m": 5.75,
    "width_p10_m": 0.8,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.957,
    "unbounded_share": 0.043,
    "confidence_median": 1.0,
    "width_median_bounded_m": 5.75,
    "window_m": [
     526.0,
     551.0
    ],
    "width_at_max25_m": 1.5,
    "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": "Esquiule",
  "county": "Pyr\u00e9n\u00e9es-Atlantiques",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}