{
 "ocl_version": "0.1.0",
 "name": "Southwest 17th Avenue",
 "slug": "southwest-17th-avenue",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.564168046671966,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 39.0,
   "end_distance_m": 41.0,
   "start_elevation_m": 145.0287851187353,
   "end_elevation_m": 145.58006847966874,
   "min_gradient_pct": -1.3685090911963016
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 26.285909138700465,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 39.0,
   "end_distance_m": 42.0,
   "start_elevation_m": 145.0287851187353,
   "end_elevation_m": 145.8173623928963,
   "min_gradient_pct": -0.6344817596072971
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.93406464053544,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 39.0,
   "end_distance_m": 44.0,
   "start_elevation_m": 145.0287851187353,
   "end_elevation_m": 146.32548835076207,
   "min_gradient_pct": -0.10860246506581461
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.482501021524342,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 34.0,
   "end_distance_m": 44.0,
   "start_elevation_m": 143.97723824860964,
   "end_elevation_m": 146.32548835076207,
   "min_gradient_pct": 1.1941150888537777
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.604298755337595,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 24.0,
   "end_distance_m": 44.0,
   "start_elevation_m": 141.80462859969455,
   "end_elevation_m": 146.32548835076207,
   "min_gradient_pct": 3.440599994581248
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.5022236384674,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 19.0,
   "end_distance_m": 44.0,
   "start_elevation_m": 140.69993244114522,
   "end_elevation_m": 146.32548835076207,
   "min_gradient_pct": 4.308078742802877
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.11200981078025,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 229.0,
   "end_distance_m": 279.0,
   "start_elevation_m": 161.47123069327728,
   "end_elevation_m": 171.5272355986674,
   "min_gradient_pct": 5.495047125888675
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.15068421903868,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 228.0,
   "end_distance_m": 328.0,
   "start_elevation_m": 161.30121443689518,
   "end_elevation_m": 177.45189865593386,
   "min_gradient_pct": 6.119770763501833
  }
 ],
 "shape": {
  "ascent_concentration": 0.345,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 74.0,
  "shape_class": "sustained"
 },
 "length_m": 712.9775058724584,
 "start_elevation_m": 137.03208536216044,
 "end_elevation_m": 215.7733347827145,
 "endpoint_gain_m": 78.74124942055406,
 "overall_gradient_pct": 11.044001917592018,
 "accumulated_ascent_m": 78.77747952877021,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.93406464053544,
   "start_distance_m": 39.0,
   "end_distance_m": 44.0,
   "midpoint_distance_m": 41.5,
   "start_elevation_m": 145.0287851187353,
   "end_elevation_m": 146.32548835076207,
   "start_xy": [
    523836.1093675091,
    5039806.360232222
   ],
   "end_xy": [
    523834.3574915487,
    5039801.677185071
   ]
  },
  "max_10m": {
   "gradient_pct": 23.482501021524342,
   "start_distance_m": 34.0,
   "end_distance_m": 44.0,
   "midpoint_distance_m": 39.0,
   "start_elevation_m": 143.97723824860964,
   "end_elevation_m": 146.32548835076207,
   "start_xy": [
    523837.8612434694,
    5039811.043279373
   ],
   "end_xy": [
    523834.3574915487,
    5039801.677185071
   ]
  },
  "max_20m": {
   "gradient_pct": 22.604298755337595,
   "start_distance_m": 24.0,
   "end_distance_m": 44.0,
   "midpoint_distance_m": 34.0,
   "start_elevation_m": 141.80462859969455,
   "end_elevation_m": 146.32548835076207,
   "start_xy": [
    523841.3649953902,
    5039820.409373675
   ],
   "end_xy": [
    523834.3574915487,
    5039801.677185071
   ]
  },
  "max_25m": {
   "gradient_pct": 22.5022236384674,
   "start_distance_m": 19.0,
   "end_distance_m": 44.0,
   "midpoint_distance_m": 31.5,
   "start_elevation_m": 140.69993244114522,
   "end_elevation_m": 146.32548835076207,
   "start_xy": [
    523843.11687135056,
    5039825.092420826
   ],
   "end_xy": [
    523834.3574915487,
    5039801.677185071
   ]
  },
  "max_50m": {
   "gradient_pct": 20.11200981078025,
   "start_distance_m": 229.0,
   "end_distance_m": 279.0,
   "midpoint_distance_m": 254.0,
   "start_elevation_m": 161.47123069327728,
   "end_elevation_m": 171.5272355986674,
   "start_xy": [
    523770.07426846126,
    5039628.211335147
   ],
   "end_xy": [
    523752.1431565121,
    5039581.537196438
   ]
  },
  "max_100m": {
   "gradient_pct": 16.15068421903868,
   "start_distance_m": 228.0,
   "end_distance_m": 328.0,
   "midpoint_distance_m": 278.0,
   "start_elevation_m": 161.30121443689518,
   "end_elevation_m": 177.45189865593386,
   "start_xy": [
    523770.4328907003,
    5039629.144817921
   ],
   "end_xy": [
    523734.6622008488,
    5039535.761528323
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.10860246506581461,
   "start_distance_m": 669.0,
   "end_distance_m": 674.0,
   "midpoint_distance_m": 671.5,
   "start_elevation_m": 211.0297552397576,
   "end_elevation_m": 211.02432511650431,
   "start_xy": [
    523856.9917933115,
    5039352.787444382
   ],
   "end_xy": [
    523855.8304060546,
    5039347.924196533
   ]
  },
  "min_10m": {
   "gradient_pct": 1.1941150888537777,
   "start_distance_m": 537.0,
   "end_distance_m": 547.0,
   "midpoint_distance_m": 542.0,
   "start_elevation_m": 202.32845730973742,
   "end_elevation_m": 202.4478688186228,
   "start_xy": [
    523770.5067287811,
    5039388.883180005
   ],
   "end_xy": [
    523780.24951548286,
    5039388.423776648
   ]
  },
  "min_20m": {
   "gradient_pct": 3.440599994581248,
   "start_distance_m": 531.0,
   "end_distance_m": 551.0,
   "midpoint_distance_m": 541.0,
   "start_elevation_m": 201.98509288376857,
   "end_elevation_m": 202.67321288268482,
   "start_xy": [
    523764.8543398345,
    5039390.882623791
   ],
   "end_xy": [
    523783.76357104816,
    5039390.258300329
   ]
  },
  "min_25m": {
   "gradient_pct": 4.308078742802877,
   "start_distance_m": 527.0,
   "end_distance_m": 552.0,
   "midpoint_distance_m": 539.5,
   "start_elevation_m": 201.68400831508754,
   "end_elevation_m": 202.76102800078826,
   "start_xy": [
    523761.12991257943,
    5039392.341610296
   ],
   "end_xy": [
    523784.6073585496,
    5039390.794977748
   ]
  },
  "min_50m": {
   "gradient_pct": 5.495047125888675,
   "start_distance_m": 53.0,
   "end_distance_m": 103.0,
   "midpoint_distance_m": 78.0,
   "start_elevation_m": 147.22439828553752,
   "end_elevation_m": 149.97192184848186,
   "start_xy": [
    523831.20411482,
    5039793.247700199
   ],
   "end_xy": [
    523814.2214622609,
    5039746.220424658
   ]
  },
  "min_100m": {
   "gradient_pct": 6.119770763501833,
   "start_distance_m": 48.0,
   "end_distance_m": 148.0,
   "midpoint_distance_m": 98.0,
   "start_elevation_m": 146.87797427471395,
   "end_elevation_m": 152.99774503821578,
   "start_xy": [
    523832.9559907804,
    5039797.93074735
   ],
   "end_xy": [
    523798.7896770926,
    5039703.9503518855
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.564168046671966,
   "start_distance_m": 39.0,
   "end_distance_m": 41.0,
   "midpoint_distance_m": 40.0,
   "start_elevation_m": 145.0287851187353,
   "end_elevation_m": 145.58006847966874,
   "start_xy": [
    523836.1093675091,
    5039806.360232222
   ],
   "end_xy": [
    523835.4086171249,
    5039804.487013361
   ]
  },
  "max_3m": {
   "gradient_pct": 26.285909138700465,
   "start_distance_m": 39.0,
   "end_distance_m": 42.0,
   "midpoint_distance_m": 40.5,
   "start_elevation_m": 145.0287851187353,
   "end_elevation_m": 145.8173623928963,
   "start_xy": [
    523836.1093675091,
    5039806.360232222
   ],
   "end_xy": [
    523835.0582419328,
    5039803.550403931
   ]
  }
 },
 "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": {
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "22e265d449471caeb15f5f24ffa102fe71905e96",
   "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-portland",
   "road_pbf": "us-west-portland-block-batch-us-west-portland.osm.pbf",
   "region_key": "usa-or",
   "crs": "EPSG:26910",
   "elevation_provider_key": "usa3dep",
   "authority": "usa-inventory",
   "registry_pbf": "oregon-2026-09-29.osm.pbf",
   "tile_index_snapshot": "sha256:36a1332ab8b279cb"
  },
  "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:26910",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/or/USGS_1M_10_x52y504_OR_PortlandMetro_B24.tif"
  ],
  "calculated_at": "2026-09-29T09:52:41+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/us-west-portland-block-batch-us-west-portland.osm.pbf",
  "osm_snapshot": "",
  "run_id": "us-west-portland",
  "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, OR_PortlandMetro_B24 (collected 2024)",
  "elevation_tile_ids": [
   "x52y504"
  ],
  "climb_origin": "discovered",
  "seam_filled_samples": {
   "count": 0,
   "distances_m": []
  },
  "seam_filled_in_maximum": false,
  "canopy_check": "unavailable \u2014 no surface model (DSM or point cloud) registered for this coverage",
  "structure_own_ways": 5,
  "carriageway": {
   "stations": 35,
   "stations_resolved": 35,
   "width_median_m": 8.25,
   "width_p10_m": 6.1,
   "width_min_m": 4.5,
   "width_max_m": 12.0,
   "bounded_share": 0.057,
   "unbounded_share": 0.943,
   "confidence_median": 0.0,
   "width_median_bounded_m": 6.38,
   "window_m": [
    19.0,
    44.0
   ],
   "width_at_max25_m": 8.25,
   "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": {
    "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": "Portland West",
  "county": "Oregon"
 }
}