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1045118.0529071003, 6314231.63200809 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 39.78019843759455, "start_distance_m": 477.0, "end_distance_m": 479.0, "midpoint_distance_m": 478.0, "start_elevation_m": 352.2527932292548, "end_elevation_m": 353.0483971980067, "start_xy": [ 1045228.5336427251, 6314014.693514611 ], "end_xy": [ 1045228.2212515953, 6314016.668966909 ] }, "max_3m": { "gradient_pct": 32.019365502175866, "start_distance_m": 476.0, "end_distance_m": 479.0, "midpoint_distance_m": 477.5, "start_elevation_m": 352.0878162329414, "end_elevation_m": 353.0483971980067, "start_xy": [ 1045228.68983829, 6314013.705788462 ], "end_xy": [ 1045228.2212515953, 6314016.668966909 ] } }, "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": { "texture_suppression": { "masked_fraction": 0.013, "windows_resited": [ 2.0, 3.0, 5.0, 10.0 ], "windows_unresolved": [] }, "texture_windows": { "rounds": 1, "windows_masked": [ { "window_m": 10.0, "start_m": 563.0, "end_m": 573.0, "raw_pct": 35.28, "reason": "hump" }, { "window_m": 5.0, "start_m": 567.0, "end_m": 572.0, "raw_pct": 38.54, "reason": "hump" } ], "advisory": [], "unresolved": [] }, "excluded_ranges_m": [ [ 561.0, 575.0 ] ], "review": [], "extent": [ "may_continue_beyond_end" ] }, "provenance": { "analysis_version": "0.1.0", "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_E1045-N6313_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E1045-N6314_0m5.tif" ], "calculated_at": "2026-09-17T02:15:55+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-alps4.osm.pbf", "osm_snapshot": "", "run_id": "fr-alps4", "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": [ "E1045-N6313", "E1045-N6314" ], "elevation_blocks": [ "21LHD8SP@2025-06-20" ], "ign_dalles": [ "LHD_FXX_1045_6314_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_1045_6315_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD8SP" ], "ign_editions": [ "2025-06-20" ], "ign_dsm_edition": { "LHD_FXX_1045_6314_MNT_O_0M50_LAMB93_IGN69": "2025-06-20", "LHD_FXX_1045_6315_MNT_O_0M50_LAMB93_IGN69": "2025-06-20" }, "climb_origin": "discovered", "canopy_check": "unavailable \u2014 surface model missing: data/cache/fr/ign-lidarhd_dsm_E1045-N6314_0m5.raw.tif: No such file or directory", "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked", "carriageway": { "stations": 51, "stations_resolved": 51, "width_median_m": 4.75, "width_p10_m": 2.75, "width_min_m": 1.0, "width_max_m": 10.0, "bounded_share": 0.608, "unbounded_share": 0.392, "confidence_median": 0.638, "width_median_bounded_m": 4.75, "window_m": [ 280.0, 305.0 ], "width_at_max25_m": 4.62, "window_stations": 6, "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)" } }, "license": "ODbL-1.0", "license_url": "https://howsteep.org/licensing" }, "area": { "place": "Bendejun", "county": "Alpes-Maritimes", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }