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Diagnostic use only: never a headline or ranking value.", "quality_summary": { "structure_suppression": { "masked_fraction": 0.1, "windows_resited": [ 2.0, 3.0, 5.0, 10.0 ], "windows_unresolved": [], "minima_resited": [ 2.0, 50.0, 100.0 ], "minima_unresolved": [] }, "texture_suppression": { "masked_fraction": 0.153, "windows_resited": [ 5.0, 20.0 ], "windows_unresolved": [], "minima_resited": [ 100.0 ], "minima_unresolved": [] }, "texture_windows": { "rounds": 1, "windows_masked": [ { "window_m": 20.0, "start_m": 47.0, "end_m": 67.0, "raw_pct": 21.11, "reason": "hump" } ], "advisory": [], "unresolved": [] }, "excluded_ranges_m": [ [ 45.0, 69.0 ], [ 154.0, 168.0 ], [ 181.0, 186.0 ], [ 188.0, 193.0 ], [ 237.0, 242.0 ], [ 248.0, 253.0 ], [ 329.0, 336.0 ] ], "review": [], "extent": [ "may_start_earlier", "may_continue_beyond_end" ] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "8f4becd2ed8ab26772f5cd961ca7d1d0c2823252", "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": "remeasure-valley-260921-ch", "road_pbf": "batch-switzerland-chunk000.pbf", "region_key": "switzerland", "crs": "EPSG:2056", "elevation_provider_key": "swisstopo", "tile_index": "stac", "authority": "swisstlm3d", "registry_pbf": "switzerland-2026-09-10.osm.pbf", "tile_index_snapshot": "sha256:9f57235e854669b9" }, "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:2056", "elevation_resolution_m": 0.5, "elevation_tiles": [ "data/cache/ch/swissalti3d_2024_2587-1119_0.5_2056_5728.tif", "data/cache/ch/swissalti3d_2024_2587-1120_0.5_2056_5728.tif", "data/cache/ch/swissalti3d_2024_2588-1119_0.5_2056_5728.tif", "data/cache/ch/swissalti3d_2024_2588-1120_0.5_2056_5728.tif" ], "calculated_at": "2026-09-21T23:51:03+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "output/valley-260921/ch/batch-switzerland-chunk000.pbf", "osm_snapshot": "", "run_id": "remeasure-valley-260921-ch", "elevation_provider": "swisstopo swissALTI3D", "elevation_licence": "swisstopo open government data (OGD): free use, attribution '\u00a9 swisstopo' \u2014 https://www.swisstopo.admin.ch/en/terms-and-conditions", "elevation_dataset": "swissALTI3D 0.5 m DTM (Federal Office of Topography swisstopo)", "elevation_tile_ids": [ "2587-1119", "2587-1120", "2588-1119", "2588-1120" ], "route_base_cut_m": 223.0, "climb_origin": "discovered", "canopy_check": "unavailable \u2014 no surface model (DSM or point cloud) registered for this coverage", "structure_own_ways": 1, "structure_own_ways_source": "map-matched to the road network: the entry carried no way list, so the ways the route runs along were found by geometry (ukclimb.batch.own_ways_by_geometry)", "prior_doc": { "slug": "discovered-lane-46-2316-7-2867", "calculated_at": "2026-09-15T21:38:13+00:00", "code_git_sha": null, "analysis_version": "0.1.0", "run_id": "retro-260915-dogleg-all", "path": "/root/uk-climbs/output/valley-260921/ch/priors/discovered-lane-46-2316-7-2867/discovered-lane-46-2316-7-2867.json", "spans": 8, "sources": [ "excluded_ranges_m", "texture" ] }, "carriageway": { "stations": 25, "stations_resolved": 25, "width_median_m": 2.75, "width_p10_m": 0.5, "width_min_m": 0.5, "width_max_m": 7.25, "bounded_share": 0.52, "unbounded_share": 0.48, "confidence_median": 0.533, "width_median_bounded_m": 1.25, "window_m": [ 421.0, 446.0 ], "width_at_max25_m": 3.5, "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": { "status": "unavailable \u2014 no DSM raster (surface model absent or point-cloud only, which cannot serve off-line samples)" } }, "unmapped_bridge_span": { "start_m": 266.0, "end_m": 416.0, "span_m": 150.0, "floor_at_m": 331.0, "depth_m": 9.2, "drop_m": 3.3, "surface": "raw", "window_start_m": 421.0, "window_end_m": 446.0, "gap_m": 5.0, "unstable": false, "perturbation_hits": 3, "note": "The ground falls 3 m below the road between 266 m and 416 m \u2014 9 m below the straight line joining the profile either side of it \u2014 and climbs back to that line, with the steepest 25 m at 421 m. That is a ravine under a deck OSM does not tag as a bridge, so no mask fired. Re-measure with mask_ranges_m over the span before this maximum stands (unmapped-bridge-span, Peter 2026-09-20)." }, "remeasured": { "on": "2026-09-22", "why": "valley-crossing extent re-measure 2026-09-22: low-to-summit (223.0 m -> 694.0 m)", "published_max25_pct": 20.58, "max25_pct": 20.5 }, "license": "ODbL-1.0", "license_url": "https://howsteep.org/licensing" }, "area": { "place": "Conthey", "county": "Valais/Wallis", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }