{ "ocl_version": "0.1.0", "name": "Discovered lane (41.9923, 8.8418)", "slug": "discovered-lane-41-9923-8-8418", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 25.321754421515408, "diagnostic": true, "flags": [ "structure_excluded" ], "start_distance_m": 76.0, "end_distance_m": 78.0, "start_elevation_m": 76.90017083723599, "end_elevation_m": 77.4066059256663, "min_gradient_pct": -9.279091901257175, "suppressed_max_gradient_pct": 71.63443005340255, "suppressed_location_m": [ 0.0, 2.0 ] }, { "window_m": 3.0, "max_gradient_pct": 24.994668603212727, "diagnostic": true, "flags": [ "structure_excluded" ], "start_distance_m": 75.0, "end_distance_m": 78.0, "start_elevation_m": 76.65676586756992, "end_elevation_m": 77.4066059256663, "min_gradient_pct": -8.954827363484222, "suppressed_max_gradient_pct": 49.213226013170676, "suppressed_location_m": [ 0.0, 3.0 ] }, { "window_m": 5.0, "max_gradient_pct": 24.910220654092825, "diagnostic": false, "flags": [ "structure_excluded" ], "start_distance_m": 73.0, "end_distance_m": 78.0, "start_elevation_m": 76.16109489296166, "end_elevation_m": 77.4066059256663, "min_gradient_pct": -8.698953873687856, "suppressed_max_gradient_pct": 31.473542893224078, "suppressed_location_m": [ 0.0, 5.0 ] }, { "window_m": 10.0, "max_gradient_pct": 24.57514467832013, "diagnostic": false, "flags": [], "start_distance_m": 77.0, "end_distance_m": 87.0, "start_elevation_m": 77.14055040421059, "end_elevation_m": 79.5980648720426, "min_gradient_pct": -7.730543051790875 }, { "window_m": 20.0, "max_gradient_pct": 24.264748305390782, "diagnostic": false, "flags": [], "start_distance_m": 72.0, "end_distance_m": 92.0, "start_elevation_m": 75.93726466248508, "end_elevation_m": 80.79021432356323, "min_gradient_pct": -7.221074981959177 }, { "window_m": 25.0, "max_gradient_pct": 23.854769553415334, "diagnostic": false, "flags": [], "start_distance_m": 67.0, "end_distance_m": 92.0, "start_elevation_m": 74.8265219352094, "end_elevation_m": 80.79021432356323, "min_gradient_pct": -7.136691288268139 }, { "window_m": 50.0, "max_gradient_pct": 21.536206401957656, "diagnostic": false, "flags": [], "start_distance_m": 62.0, "end_distance_m": 112.0, "start_elevation_m": 73.80507832588731, "end_elevation_m": 84.57318152686614, "min_gradient_pct": -6.75852246750037 }, { "window_m": 100.0, "max_gradient_pct": 19.223604649945088, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 56.0, "end_distance_m": 156.0, "start_elevation_m": 72.78944564796765, "end_elevation_m": 92.01305029791274, "min_gradient_pct": -5.840273230276523 } ], "shape": { "ascent_concentration": 0.649, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 130.0, "shape_class": "stepped" }, "length_m": 1578.6515050394364, "start_elevation_m": 66.8281428736759, "end_elevation_m": 125.10769983457766, "endpoint_gain_m": 58.27955696090176, "overall_gradient_pct": 3.6917303644825568, "accumulated_ascent_m": 71.12423599100502, "window_maxima": { "max_5m": { "gradient_pct": 24.910220654092825, "start_distance_m": 73.0, "end_distance_m": 78.0, "midpoint_distance_m": 75.5, "start_elevation_m": 76.16109489296166, "end_elevation_m": 77.4066059256663, "start_xy": [ 1184093.7829099335, 6116874.688430493 ], "end_xy": [ 1184098.676262676, 6116875.715610582 ] }, "max_10m": { "gradient_pct": 24.57514467832013, "start_distance_m": 77.0, "end_distance_m": 87.0, "midpoint_distance_m": 82.0, "start_elevation_m": 77.14055040421059, "end_elevation_m": 79.5980648720426, "start_xy": [ 1184097.6975921276, 6116875.510174564 ], "end_xy": [ 1184107.4842976127, 6116877.564534743 ] }, "max_20m": { "gradient_pct": 24.264748305390782, "start_distance_m": 72.0, "end_distance_m": 92.0, "midpoint_distance_m": 82.0, "start_elevation_m": 75.93726466248508, "end_elevation_m": 80.79021432356323, "start_xy": [ 1184092.8042393848, 6116874.4829944745 ], "end_xy": [ 1184112.4035756742, 6116878.396797132 ] }, "max_25m": { "gradient_pct": 23.854769553415334, "start_distance_m": 67.0, "end_distance_m": 92.0, "midpoint_distance_m": 79.5, "start_elevation_m": 74.8265219352094, "end_elevation_m": 80.79021432356323, "start_xy": [ 1184087.9108866423, 6116873.455814385 ], "end_xy": [ 1184112.4035756742, 6116878.396797132 ] }, "max_50m": { "gradient_pct": 21.536206401957656, "start_distance_m": 62.0, "end_distance_m": 112.0, "midpoint_distance_m": 87.0, "start_elevation_m": 73.80507832588731, "end_elevation_m": 84.57318152686614, "start_xy": [ 1184083.0175338998, 6116872.428634295 ], "end_xy": [ 1184132.3361155617, 6116877.830850547 ] }, "max_100m": { "gradient_pct": 19.223604649945088, "start_distance_m": 56.0, "end_distance_m": 156.0, "midpoint_distance_m": 106.0, "start_elevation_m": 72.78944564796765, "end_elevation_m": 92.01305029791274, "start_xy": [ 1184077.1314776358, 6116873.408956354 ], "end_xy": [ 1184174.202617816, 6116864.390764771 ] } }, "window_minima": { "min_5m": { "gradient_pct": -8.698953873687856, "start_distance_m": 886.0, "end_distance_m": 891.0, "midpoint_distance_m": 888.5, "start_elevation_m": 111.15387973942819, "end_elevation_m": 110.7189320457438, "start_xy": [ 1184837.828617129, 6117091.191810578 ], "end_xy": [ 1184841.8250848216, 6117094.196514554 ] }, "min_10m": { "gradient_pct": -7.730543051790875, "start_distance_m": 883.0, "end_distance_m": 893.0, "midpoint_distance_m": 888.0, "start_elevation_m": 111.36963132831687, "end_elevation_m": 110.59657702313778, "start_xy": [ 1184835.3110069712, 6117089.605048855 ], "end_xy": [ 1184843.4236718984, 6117095.398396145 ] }, "min_20m": { "gradient_pct": -7.221074981959177, "start_distance_m": 658.0, "end_distance_m": 678.0, "midpoint_distance_m": 668.0, "start_elevation_m": 112.787666746156, "end_elevation_m": 111.34345174976417, "start_xy": [ 1184625.5401926227, 6117011.640185956 ], "end_xy": [ 1184642.7641929036, 6117021.805510068 ] }, "min_25m": { "gradient_pct": -7.136691288268139, "start_distance_m": 658.0, "end_distance_m": 683.0, "midpoint_distance_m": 670.5, "start_elevation_m": 112.787666746156, "end_elevation_m": 111.00349392408897, "start_xy": [ 1184625.5401926227, 6117011.640185956 ], "end_xy": [ 1184647.099847907, 6117024.293822957 ] }, "min_50m": { "gradient_pct": -6.75852246750037, "start_distance_m": 638.0, "end_distance_m": 688.0, "midpoint_distance_m": 663.0, "start_elevation_m": 114.07031341014908, "end_elevation_m": 110.6910521763989, "start_xy": [ 1184609.9298133238, 6116999.144002047 ], "end_xy": [ 1184651.5190326427, 6117026.632798432 ] }, "min_100m": { "gradient_pct": -5.840273230276523, "start_distance_m": 614.0, "end_distance_m": 714.0, "midpoint_distance_m": 664.0, "start_elevation_m": 115.34133398794341, "end_elevation_m": 109.50106075766689, "start_xy": [ 1184590.5121548304, 6116985.073306887 ], "end_xy": [ 1184674.6580365575, 6117038.451131307 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 25.321754421515408, "start_distance_m": 76.0, "end_distance_m": 78.0, "midpoint_distance_m": 77.0, "start_elevation_m": 76.90017083723599, "end_elevation_m": 77.4066059256663, "start_xy": [ 1184096.718921579, 6116875.304738547 ], "end_xy": [ 1184098.676262676, 6116875.715610582 ] }, "max_3m": { "gradient_pct": 24.994668603212727, "start_distance_m": 75.0, "end_distance_m": 78.0, "midpoint_distance_m": 76.5, "start_elevation_m": 76.65676586756992, "end_elevation_m": 77.4066059256663, "start_xy": [ 1184095.7402510305, 6116875.099302528 ], "end_xy": [ 1184098.676262676, 6116875.715610582 ] } }, "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": 0.013, "windows_resited": [ 2.0, 3.0, 5.0 ], "windows_unresolved": [], "minima_resited": [], "minima_unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.089, "obstruction_max_height_m": 12.45, "flagged_windows_m": [ 100 ] }, "excluded_ranges_m": [ [ 0.0, 20.0 ] ], "review": [], "extent": [ "may_start_earlier", "may_continue_beyond_end" ] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "33abfff569d4360542e616d0d42c1b94d0a711fa", "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": "fr-co1", "road_pbf": "block-batch-fr-co1.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": "sha256:2a717d675f2607cc" }, "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_E1184-N6116_0m5@21LHDCorseUT-2025-04-02.tif", "data/cache/fr/ign-lidarhd_dtm_E1184-N6117_0m5@21LHDCorseUT-2025-04-02.tif", "data/cache/fr/ign-lidarhd_dtm_E1185-N6116_0m5@21LHDCorseUT-2025-04-02.tif", "data/cache/fr/ign-lidarhd_dtm_E1185-N6117_0m5@21LHDCorseUT-2025-04-02.tif" ], "calculated_at": "2026-09-25T00:23:43+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-co1.osm.pbf", "osm_snapshot": "", "run_id": "fr-co1", "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": [ "E1184-N6116", "E1184-N6117", "E1185-N6116", "E1185-N6117" ], "elevation_blocks": [ "21LHDCorseUT@2025-04-02" ], "ign_dalles": [ "LHD_FXX_1184_6117_MNT_O_0M50_LAMB93_IGN78", "LHD_FXX_1184_6118_MNT_O_0M50_LAMB93_IGN78", "LHD_FXX_1185_6117_MNT_O_0M50_LAMB93_IGN78", "LHD_FXX_1185_6118_MNT_O_0M50_LAMB93_IGN78" ], "ign_missions": [ "21LHDCorseUT" ], "ign_editions": [ "2025-04-02" ], "ign_dsm_edition": { "LHD_FXX_1184_6117_MNT_O_0M50_LAMB93_IGN78": "2025-04-02", "LHD_FXX_1184_6118_MNT_O_0M50_LAMB93_IGN78": "2025-04-02", "LHD_FXX_1185_6117_MNT_O_0M50_LAMB93_IGN78": "2025-04-02", "LHD_FXX_1185_6118_MNT_O_0M50_LAMB93_IGN78": "2025-04-02" }, "climb_origin": "discovered", "structure_own_ways": 4, "structure_mask_ranges_m": [ [ 0.0, 15.0 ] ], "carriageway": { "stations": 70, "stations_resolved": 70, "width_median_m": 5.38, "width_p10_m": 3.98, "width_min_m": 3.0, "width_max_m": 12.0, "bounded_share": 0.414, "unbounded_share": 0.586, "confidence_median": 0.0, "width_median_bounded_m": 4.5, "window_m": [ 67.0, 92.0 ], "width_at_max25_m": 7.5, "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": { "stations": 70, "stations_resolved": 70, "width_median_m": 6.0, "width_p10_m": 2.9, "width_min_m": 0.0, "width_max_m": 12.0, "bounded_share": 0.671, "unbounded_share": 0.329, "confidence_median": 1.0, "width_median_bounded_m": 4.75, "window_m": [ 67.0, 92.0 ], "width_at_max25_m": 3.75, "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 } }, "license": "ODbL-1.0", "license_url": "https://howsteep.org/licensing" }, "area": { "place": "Sarrola-Carcopino", "county": "Corse-du-Sud", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }