{
 "ocl_version": "0.1.0",
 "name": "Roy Street",
 "slug": "roy-street",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.573683916599066,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 272.0,
   "end_distance_m": 274.0,
   "start_elevation_m": 231.59236298127092,
   "end_elevation_m": 232.1038366596029,
   "min_gradient_pct": -8.573971686855941
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.237599163466484,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 271.0,
   "end_distance_m": 274.0,
   "start_elevation_m": 231.3467086846989,
   "end_elevation_m": 232.1038366596029,
   "min_gradient_pct": -8.317595828609115
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.852906342138112,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 271.0,
   "end_distance_m": 276.0,
   "start_elevation_m": 231.3467086846989,
   "end_elevation_m": 232.58935400180582,
   "min_gradient_pct": -8.011763348195018
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.465840228391187,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 264.0,
   "end_distance_m": 274.0,
   "start_elevation_m": 229.6572526367638,
   "end_elevation_m": 232.1038366596029,
   "min_gradient_pct": -7.1868335403908645
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 24.407106560540797,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 254.0,
   "end_distance_m": 274.0,
   "start_elevation_m": 227.22241534749475,
   "end_elevation_m": 232.1038366596029,
   "min_gradient_pct": -5.593415721145902
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 24.396573916105467,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 250.0,
   "end_distance_m": 275.0,
   "start_elevation_m": 226.24538878761177,
   "end_elevation_m": 232.34453226663814,
   "min_gradient_pct": -4.8572690890335934
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.07070344975739,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 232.0,
   "end_distance_m": 282.0,
   "start_elevation_m": 222.36914549379418,
   "end_elevation_m": 233.90449721867287,
   "min_gradient_pct": -0.19496536174722223
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.986393615132812,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 190.0,
   "end_distance_m": 290.0,
   "start_elevation_m": 214.13591443270073,
   "end_elevation_m": 235.12230804783354,
   "min_gradient_pct": 6.105566600307753
  }
 ],
 "shape": {
  "ascent_concentration": 0.448,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 111.0,
  "shape_class": "sustained"
 },
 "length_m": 385.97585173988926,
 "start_elevation_m": 197.27664342040748,
 "end_elevation_m": 241.53900038529207,
 "endpoint_gain_m": 44.26235696488459,
 "overall_gradient_pct": 11.467649275300563,
 "accumulated_ascent_m": 45.809912822531146,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.852906342138112,
   "start_distance_m": 271.0,
   "end_distance_m": 276.0,
   "midpoint_distance_m": 273.5,
   "start_elevation_m": 231.3467086846989,
   "end_elevation_m": 232.58935400180582,
   "start_xy": [
    390988.6352181276,
    3776471.8124963134
   ],
   "end_xy": [
    390993.48962243675,
    3776473.0103104906
   ]
  },
  "max_10m": {
   "gradient_pct": 24.465840228391187,
   "start_distance_m": 264.0,
   "end_distance_m": 274.0,
   "midpoint_distance_m": 269.0,
   "start_elevation_m": 229.6572526367638,
   "end_elevation_m": 232.1038366596029,
   "start_xy": [
    390981.8390520947,
    3776470.1355564655
   ],
   "end_xy": [
    390991.54786071304,
    3776472.53118482
   ]
  },
  "max_20m": {
   "gradient_pct": 24.407106560540797,
   "start_distance_m": 254.0,
   "end_distance_m": 274.0,
   "midpoint_distance_m": 264.0,
   "start_elevation_m": 227.22241534749475,
   "end_elevation_m": 232.1038366596029,
   "start_xy": [
    390972.13024347636,
    3776467.739928111
   ],
   "end_xy": [
    390991.54786071304,
    3776472.53118482
   ]
  },
  "max_25m": {
   "gradient_pct": 24.396573916105467,
   "start_distance_m": 250.0,
   "end_distance_m": 275.0,
   "midpoint_distance_m": 262.5,
   "start_elevation_m": 226.24538878761177,
   "end_elevation_m": 232.34453226663814,
   "start_xy": [
    390968.24672002904,
    3776466.7816767693
   ],
   "end_xy": [
    390992.5187415749,
    3776472.770747655
   ]
  },
  "max_50m": {
   "gradient_pct": 23.07070344975739,
   "start_distance_m": 232.0,
   "end_distance_m": 282.0,
   "midpoint_distance_m": 257.0,
   "start_elevation_m": 222.36914549379418,
   "end_elevation_m": 233.90449721867287,
   "start_xy": [
    390950.77086451603,
    3776462.4695457313
   ],
   "end_xy": [
    390999.31490760774,
    3776474.4476875034
   ]
  },
  "max_100m": {
   "gradient_pct": 20.986393615132812,
   "start_distance_m": 190.0,
   "end_distance_m": 290.0,
   "midpoint_distance_m": 240.0,
   "start_elevation_m": 214.13591443270073,
   "end_elevation_m": 235.12230804783354,
   "start_xy": [
    390909.99386831897,
    3776452.407906643
   ],
   "end_xy": [
    391007.0819545024,
    3776476.364190187
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -8.011763348195018,
   "start_distance_m": 318.0,
   "end_distance_m": 323.0,
   "midpoint_distance_m": 320.5,
   "start_elevation_m": 235.33294101654013,
   "end_elevation_m": 234.93235284913038,
   "start_xy": [
    391034.26661863376,
    3776483.0719495793
   ],
   "end_xy": [
    391039.12102294294,
    3776484.2697637565
   ]
  },
  "min_10m": {
   "gradient_pct": -7.1868335403908645,
   "start_distance_m": 315.0,
   "end_distance_m": 325.0,
   "midpoint_distance_m": 320.0,
   "start_elevation_m": 235.5143199252121,
   "end_elevation_m": 234.79563657117302,
   "start_xy": [
    391031.35397604824,
    3776482.353261073
   ],
   "end_xy": [
    391041.0627846666,
    3776484.748889427
   ]
  },
  "min_20m": {
   "gradient_pct": -5.593415721145902,
   "start_distance_m": 311.0,
   "end_distance_m": 331.0,
   "midpoint_distance_m": 321.0,
   "start_elevation_m": 235.68674248106774,
   "end_elevation_m": 234.56805933683856,
   "start_xy": [
    391027.4704526009,
    3776481.395009731
   ],
   "end_xy": [
    391046.8880698376,
    3776486.18626644
   ]
  },
  "min_25m": {
   "gradient_pct": -4.8572690890335934,
   "start_distance_m": 306.0,
   "end_distance_m": 331.0,
   "midpoint_distance_m": 318.5,
   "start_elevation_m": 235.78237660909696,
   "end_elevation_m": 234.56805933683856,
   "start_xy": [
    391022.61604829173,
    3776480.197195554
   ],
   "end_xy": [
    391046.8880698376,
    3776486.18626644
   ]
  },
  "min_50m": {
   "gradient_pct": -0.19496536174722223,
   "start_distance_m": 290.0,
   "end_distance_m": 340.0,
   "midpoint_distance_m": 315.0,
   "start_elevation_m": 235.12230804783354,
   "end_elevation_m": 235.02482536695993,
   "start_xy": [
    391007.0819545024,
    3776476.364190187
   ],
   "end_xy": [
    391048.18619325815,
    3776477.8159610764
   ]
  },
  "min_100m": {
   "gradient_pct": 6.105566600307753,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 197.27664342040748,
   "end_elevation_m": 203.38221002071523,
   "start_xy": [
    390726.19,
    3776404.292
   ],
   "end_xy": [
    390822.8242576812,
    3776430.017866824
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.573683916599066,
   "start_distance_m": 272.0,
   "end_distance_m": 274.0,
   "midpoint_distance_m": 273.0,
   "start_elevation_m": 231.59236298127092,
   "end_elevation_m": 232.1038366596029,
   "start_xy": [
    390989.6060989894,
    3776472.052059149
   ],
   "end_xy": [
    390991.54786071304,
    3776472.53118482
   ]
  },
  "max_3m": {
   "gradient_pct": 25.237599163466484,
   "start_distance_m": 271.0,
   "end_distance_m": 274.0,
   "midpoint_distance_m": 272.5,
   "start_elevation_m": 231.3467086846989,
   "end_elevation_m": 232.1038366596029,
   "start_xy": [
    390988.6352181276,
    3776471.8124963134
   ],
   "end_xy": [
    390991.54786071304,
    3776472.53118482
   ]
  }
 },
 "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": 0.08,
   "obstruction_max_height_m": 17.05,
   "flagged_windows_m": [
    100
   ]
  },
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "c9b5ca88920e832685f553c95e97ad4f79ca9700",
   "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": "us-west-la-hills",
   "road_pbf": "us-west-la-hills-block-batch-us-west-la-hills.osm.pbf",
   "region_key": "usa-ca-east",
   "crs": "EPSG:26911",
   "elevation_provider_key": "usa3dep",
   "authority": "usa-inventory",
   "registry_pbf": "california-2026-09-29.osm.pbf",
   "tile_index_snapshot": "sha256:c98325348ae2ec01"
  },
  "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:26911",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/ca-east/USGS_1M_11_x39y378_CA_LosAngeles_B23.tif"
  ],
  "calculated_at": "2026-09-29T09:11:41+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/us-west-la-hills-block-batch-us-west-la-hills.osm.pbf",
  "osm_snapshot": "",
  "run_id": "us-west-la-hills",
  "elevation_provider": "USGS 3DEP (The National Map)",
  "elevation_licence": "Public domain \u2014 USGS 3DEP 1 m DEM, courtesy of the U.S. Geological Survey",
  "elevation_dataset": "USGS 3DEP 1 m DEM, CA_LosAngeles_B23 (collected 2023-24)",
  "elevation_tile_ids": [
   "x39y378"
  ],
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/CA_LosAngeles_1_B23",
   "ept_crs": "EPSG:3857",
   "station_coverage": 1.0,
   "cell_ground_m": 1.0,
   "nodes_failed": 0,
   "window_coverage": {
    "5": 1.0,
    "10": 1.0,
    "20": 1.0,
    "25": 1.0
   }
  },
  "structure_own_ways": 2,
  "carriageway": {
   "stations": 20,
   "stations_resolved": 20,
   "width_median_m": 9.88,
   "width_p10_m": 7.0,
   "width_min_m": 4.25,
   "width_max_m": 12.0,
   "bounded_share": 0.05,
   "unbounded_share": 0.95,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.75,
   "window_m": [
    250.0,
    275.0
   ],
   "width_at_max25_m": 9.0,
   "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": {
    "status": "unavailable \u2014 no DSM raster (surface model absent or point-cloud only, which cannot serve off-line samples)"
   }
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Los Angeles",
  "county": "California"
 }
}