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{ "gradient_pct": 28.955135758423012, "start_distance_m": 1174.0, "end_distance_m": 1177.0, "midpoint_distance_m": 1175.5, "start_elevation_m": 164.76853807659995, "end_elevation_m": 165.63719214935264, "start_xy": [ 345548.5766992149, 6254075.7881641 ], "end_xy": [ 345546.2086317015, 6254073.946356223 ] } }, "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": { "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.315, "obstruction_max_height_m": 27.47, "flagged_windows_m": [ 2, 3 ] }, "review": [], "extent": [ "may_start_earlier", "may_continue_beyond_end" ] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "06fa4c370391597f015858e97dcf01ca2f5b3640", "code_git_dirty": "false", "analysis_version": "0.1.0", "analysis_config_digest": "sha256:0048c2bbb24ab95e", "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": "fr-pyr1", "road_pbf": "block-batch-fr-pyr1.osm.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:c54ac68b3f57b41b" }, "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_E345-N6253_0m5@21LHD1EQ-2025-09-26.tif", "data/cache/fr/ign-lidarhd_dtm_E345-N6254_0m5@21LHD1EQ-2025-09-26.tif", "data/cache/fr/ign-lidarhd_dtm_E346-N6254_0m5@21LHD1EQ-2025-09-26.tif" ], "calculated_at": "2026-09-20T06:15:21+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-pyr1.osm.pbf", "osm_snapshot": "", "run_id": "fr-pyr1", "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": [ "E345-N6253", "E345-N6254", "E346-N6254" ], "elevation_blocks": [ "21LHD1EQ@2025-09-26" ], "ign_dalles": [ "LHD_FXX_0345_6254_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0345_6255_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0346_6255_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD1EQ" ], "ign_editions": [ "2025-09-26" ], "ign_dsm_edition": { "LHD_FXX_0345_6254_MNT_O_0M50_LAMB93_IGN69": "2025-09-26", "LHD_FXX_0345_6255_MNT_O_0M50_LAMB93_IGN69": "2025-09-26", "LHD_FXX_0346_6255_MNT_O_0M50_LAMB93_IGN69": "2025-09-26" }, "climb_origin": "discovered", "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked", "carriageway": { "stations": 67, "stations_resolved": 67, "width_median_m": 5.25, "width_p10_m": 3.4, "width_min_m": 0.5, "width_max_m": 10.75, "bounded_share": 0.373, "unbounded_share": 0.627, "confidence_median": 0.0, "width_median_bounded_m": 5.25, "window_m": [ 1410.0, 1435.0 ], "width_at_max25_m": 5.25, "window_stations": 6, "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": 67, "stations_resolved": 67, "width_median_m": 4.75, "width_p10_m": 0.75, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.836, "unbounded_share": 0.164, "confidence_median": 1.0, "width_median_bounded_m": 4.12, "window_m": [ 1410.0, 1435.0 ], "width_at_max25_m": 8.0, "window_stations": 6, "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 } }, "license": "ODbL-1.0", "license_url": "https://howsteep.org/licensing" }, "area": { "place": "Bidarray", "county": "Pyr\u00e9n\u00e9es-Atlantiques", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }