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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": { "texture_suppression": { "masked_fraction": 0.008, "windows_resited": [ 2.0, 3.0, 5.0, 10.0 ], "windows_unresolved": [], "minima_resited": [], "minima_unresolved": [] }, "texture_windows": { "rounds": 1, "windows_masked": [], "advisory": [], "unresolved": [], "carried": [ { "window_m": 5.0, "start_m": 1040.0, "end_m": 1045.0, "raw_pct": 31.94, "reason": "short-step", "perturbations": [ "phase+0.000/mask+0", "phase+0.333/mask+1", "phase+0.667/mask-1" ], "perturbation_reasons": [ "short-step", "short-step", "" ], "carried": { "decision": "carry", "perturbation_hits": 2, "perturbations": 3, "prior": { "start_m": 1423.0, "end_m": 1428.0, "reason": "short-step", "source": "texture", "window_m": 5.0, "needs": [], "gap_m": 0.36, "window_over": 1.0, "span_under": 1.0 }, "published_reason": "short-step", "published_span_m": [ 1423.0, 1428.0 ], "published_pct": 31.3479572692097 } } ] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.253, "obstruction_max_height_m": 18.07, "flagged_windows_m": [ 2, 3, 5.0, 10, 20, 25, 50, 100 ] }, "excluded_ranges_m": [ [ 1038.0, 1047.0 ] ], "review": [], "extent": [ "descends_at_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-fr", "road_pbf": "batch-france-chunk000.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:c8a0bc944d6f7ea2" }, "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_E858-N6350_0m5@22LHD6OO-2025-03-14.tif", "data/cache/fr/ign-lidarhd_dtm_E858-N6351_0m5@22LHD6OO-2025-03-14.tif", "data/cache/fr/ign-lidarhd_dtm_E859-N6350_0m5@22LHD6OO-2025-03-14.tif", "data/cache/fr/ign-lidarhd_dtm_E859-N6351_0m5@22LHD6OO-2025-03-14.tif" ], "calculated_at": "2026-09-22T00:13:05+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "output/valley-260921/fr/batch-france-chunk000.pbf", "osm_snapshot": "", "run_id": "remeasure-valley-260921-fr", "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": [ "E858-N6350", "E858-N6351", "E859-N6350", "E859-N6351" ], "elevation_blocks": [ "22LHD6OO@2025-03-14" ], "ign_dalles": [ "LHD_FXX_0858_6351_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0858_6352_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0859_6351_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0859_6352_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "22LHD6OO" ], "ign_editions": [ "2025-03-14" ], "ign_dsm_edition": { "LHD_FXX_0858_6351_MNT_O_0M50_LAMB93_IGN69": "2025-03-14", "LHD_FXX_0858_6352_MNT_O_0M50_LAMB93_IGN69": "2025-03-14", "LHD_FXX_0859_6351_MNT_O_0M50_LAMB93_IGN69": "2025-03-14", "LHD_FXX_0859_6352_MNT_O_0M50_LAMB93_IGN69": "2025-03-14" }, "route_base_cut_m": 382.0, "climb_origin": "discovered", "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": "chemin-vieux-de-roaix", "calculated_at": "2026-09-17T04:07:34+00:00", "code_git_sha": null, "analysis_version": "0.1.0", "run_id": "fr-alps1", "path": "/root/uk-climbs/output/valley-260921/fr/priors/chemin-vieux-de-roaix/chemin-vieux-de-roaix.json", "spans": 2, "sources": [ "excluded_ranges_m", "texture" ] }, "suppression_carried": [ { "window_m": 5.0, "start_m": 1040.0, "end_m": 1045.0, "raw_pct": 31.94, "reason": "short-step", "published_reason": "short-step", "published_span_m": [ 1423.0, 1428.0 ], "published_pct": 31.3479572692097, "perturbation_hits": 2, "perturbations": 3, "gap_m": 0.36 } ], "carriageway": { "stations": 59, "stations_resolved": 59, "width_median_m": 4.25, "width_p10_m": 2.95, "width_min_m": 1.0, "width_max_m": 10.75, "bounded_share": 0.458, "unbounded_share": 0.542, "confidence_median": 0.0, "width_median_bounded_m": 3.5, "window_m": [ 1183.0, 1208.0 ], "width_at_max25_m": 6.25, "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": { "stations": 59, "stations_resolved": 59, "width_median_m": 5.25, "width_p10_m": 1.65, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.763, "unbounded_share": 0.237, "confidence_median": 1.0, "width_median_bounded_m": 4.25, "window_m": [ 1183.0, 1208.0 ], "width_at_max25_m": 3.5, "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 } }, "unmapped_bridge_span": { "start_m": 904.0, "end_m": 1066.0, "span_m": 162.0, "floor_at_m": 980.0, "depth_m": 8.3, "drop_m": 2.0, "surface": "raw", "window_start_m": 1183.0, "window_end_m": 1208.0, "gap_m": 117.0, "unstable": false, "perturbation_hits": 3, "note": "The ground falls 2 m below the road between 904 m and 1066 m \u2014 8 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 1183 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 (382.0 m -> 1653.0 m)", "published_max25_pct": 21.19, "max25_pct": 21.21 }, "license": "ODbL-1.0", "license_url": "https://howsteep.org/licensing" }, "area": { "place": "Rasteau", "county": "Vaucluse", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }