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"diagnostic_window_maxima": { "max_2m": { "gradient_pct": 27.366715940218, "start_distance_m": 1267.0, "end_distance_m": 1269.0, "midpoint_distance_m": 1268.0, "start_elevation_m": 1140.574991675425, "end_elevation_m": 1141.1223259942294, "start_xy": [ 2634474.7160153417, 1205379.5480392003 ], "end_xy": [ 2634473.962804973, 1205381.4007867237 ] }, "max_3m": { "gradient_pct": 26.47909620923201, "start_distance_m": 1259.0, "end_distance_m": 1262.0, "midpoint_distance_m": 1260.5, "start_elevation_m": 1138.574873146872, "end_elevation_m": 1139.369246033149, "start_xy": [ 2634477.6723001893, 1205372.1145365294 ], "end_xy": [ 2634476.586457388, 1205374.9111318076 ] } }, "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": { "structure_suppression": { "masked_fraction": 0.003, "windows_resited": [ 2.0, 3.0, 5.0 ], "windows_unresolved": [], "minima_resited": [], "minima_unresolved": [] }, "excluded_ranges_m": [ [ 0.0, 4.0 ] ], "review": [], "extent": [ "may_start_earlier" ] }, "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:ef977b9383baf01a" }, "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_2025_2634-1204_0.5_2056_5728.tif", "data/cache/ch/swissalti3d_2025_2634-1205_0.5_2056_5728.tif" ], "calculated_at": "2026-09-21T23:51:28+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": [ "2634-1204", "2634-1205" ], "route_base_cut_m": 983.0, "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-46-9986-7-8911", "calculated_at": "2026-09-10T23:41:39+00:00", "code_git_sha": null, "analysis_version": "0.1.0", "run_id": "ch-run6-260910", "path": "/root/uk-climbs/output/valley-260921/ch/priors/discovered-lane-46-9986-7-8911/discovered-lane-46-9986-7-8911.json", "spans": 1, "sources": [ "excluded_ranges_m" ] }, "carriageway": { "stations": 69, "stations_resolved": 69, "width_median_m": 3.75, "width_p10_m": 2.7, "width_min_m": 1.0, "width_max_m": 8.75, "bounded_share": 0.826, "unbounded_share": 0.174, "confidence_median": 0.86, "width_median_bounded_m": 3.5, "window_m": [ 1253.0, 1278.0 ], "width_at_max25_m": 3.0, "window_stations": 7, "single_track": true, "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)" } }, "remeasured": { "on": "2026-09-22", "why": "valley-crossing extent re-measure 2026-09-22: low-to-summit (983.0 m -> 2553.0 m)", "published_max25_pct": 24.0, "max25_pct": 24.02 }, "license": "ODbL-1.0", "license_url": "https://howsteep.org/licensing" }, "area": { "place": "Trub", "county": "Bern/Berne", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }