{ "ocl_version": "0.1.0", "name": "Discovered lane (42.7181, 9.4428)", "slug": "discovered-lane-42-7181-9-4428", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 28.894084959497945, "diagnostic": true, "flags": [], "start_distance_m": 3156.0, "end_distance_m": 3158.0, "start_elevation_m": 394.75245333717294, "end_elevation_m": 395.3303350363629, "min_gradient_pct": -7.872042714933514 }, { "window_m": 3.0, "max_gradient_pct": 28.551062930860855, "diagnostic": true, "flags": [], "start_distance_m": 3155.0, "end_distance_m": 3158.0, "start_elevation_m": 394.47380314843707, "end_elevation_m": 395.3303350363629, "min_gradient_pct": -7.63037985056106 }, { "window_m": 5.0, "max_gradient_pct": 27.604547461384072, "diagnostic": false, "flags": [], "start_distance_m": 3154.0, "end_distance_m": 3159.0, "start_elevation_m": 394.2226743852504, "end_elevation_m": 395.6029017583196, "min_gradient_pct": -7.491246945132843 }, { "window_m": 10.0, "max_gradient_pct": 26.409201112790583, "diagnostic": false, "flags": [], "start_distance_m": 3152.0, "end_distance_m": 3162.0, "start_elevation_m": 393.707920531617, "end_elevation_m": 396.34884064289605, "min_gradient_pct": -6.949284131875402 }, { "window_m": 20.0, "max_gradient_pct": 26.09086743182843, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 3153.0, "end_distance_m": 3173.0, "start_elevation_m": 393.9692798537597, "end_elevation_m": 399.1874533401254, "min_gradient_pct": -6.296940727945071 }, { "window_m": 25.0, "max_gradient_pct": 25.637778283134367, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 3148.0, "end_distance_m": 3173.0, "start_elevation_m": 392.7780087693418, "end_elevation_m": 399.1874533401254, "min_gradient_pct": -5.9880566324843585 }, { "window_m": 50.0, "max_gradient_pct": 23.54694219811506, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 3135.0, "end_distance_m": 3185.0, "start_elevation_m": 389.9238560359969, "end_elevation_m": 401.6973271350544, "min_gradient_pct": -4.641438820937651 }, { "window_m": 100.0, "max_gradient_pct": 19.193934708708298, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 3135.0, "end_distance_m": 3235.0, "start_elevation_m": 389.9238560359969, "end_elevation_m": 409.1177907447052, "min_gradient_pct": -3.900819862316837 } ], "shape": { "ascent_concentration": 0.438, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 80.0, "shape_class": "sustained" }, "length_m": 3366.88340710983, "start_elevation_m": 324.8977277832154, "end_elevation_m": 425.88057446290077, "endpoint_gain_m": 100.9828466796854, "overall_gradient_pct": 2.999297405619703, "accumulated_ascent_m": 110.4842138440448, "window_maxima": { "max_5m": { "gradient_pct": 27.604547461384072, "start_distance_m": 3154.0, "end_distance_m": 3159.0, "midpoint_distance_m": 3156.5, "start_elevation_m": 394.2226743852504, "end_elevation_m": 395.6029017583196, "start_xy": [ 1227061.2638592843, 6202751.806984191 ], "end_xy": [ 1227060.7359868824, 6202746.861495981 ] }, "max_10m": { "gradient_pct": 26.409201112790583, "start_distance_m": 3152.0, "end_distance_m": 3162.0, "midpoint_distance_m": 3157.0, "start_elevation_m": 393.707920531617, "end_elevation_m": 396.34884064289605, "start_xy": [ 1227061.2685979058, 6202753.806978578 ], "end_xy": [ 1227060.1162663214, 6202743.926202738 ] }, "max_20m": { "gradient_pct": 26.09086743182843, "start_distance_m": 3153.0, "end_distance_m": 3173.0, "midpoint_distance_m": 3163.0, "start_elevation_m": 393.9692798537597, "end_elevation_m": 399.1874533401254, "start_xy": [ 1227061.266228595, 6202752.806981384 ], "end_xy": [ 1227054.5960556536, 6202734.685653507 ] }, "max_25m": { "gradient_pct": 25.637778283134367, "start_distance_m": 3148.0, "end_distance_m": 3173.0, "midpoint_distance_m": 3160.5, "start_elevation_m": 392.7780087693418, "end_elevation_m": 399.1874533401254, "start_xy": [ 1227061.046541688, 6202757.791865686 ], "end_xy": [ 1227054.5960556536, 6202734.685653507 ] }, "max_50m": { "gradient_pct": 23.54694219811506, "start_distance_m": 3135.0, "end_distance_m": 3185.0, "midpoint_distance_m": 3160.0, "start_elevation_m": 389.9238560359969, "end_elevation_m": 401.6973271350544, "start_xy": [ 1227060.0457264802, 6202770.63457999 ], "end_xy": [ 1227055.6028279923, 6202723.068726383 ] }, "max_100m": { "gradient_pct": 19.193934708708298, "start_distance_m": 3135.0, "end_distance_m": 3235.0, "midpoint_distance_m": 3185.0, "start_elevation_m": 389.9238560359969, "end_elevation_m": 409.1177907447052, "start_xy": [ 1227060.0457264802, 6202770.63457999 ], "end_xy": [ 1227040.1893561406, 6202699.732691023 ] } }, "window_minima": { "min_5m": { "gradient_pct": -7.491246945132843, "start_distance_m": 465.0, "end_distance_m": 470.0, "midpoint_distance_m": 467.5, "start_elevation_m": 336.7369067297001, "end_elevation_m": 336.36234438244344, "start_xy": [ 1227682.153468313, 6201298.390567128 ], "end_xy": [ 1227687.0625944033, 6201297.441630338 ] }, "min_10m": { "gradient_pct": -6.949284131875402, "start_distance_m": 460.0, "end_distance_m": 470.0, "midpoint_distance_m": 465.0, "start_elevation_m": 337.057272795631, "end_elevation_m": 336.36234438244344, "start_xy": [ 1227677.2443422226, 6201299.339503916 ], "end_xy": [ 1227687.0625944033, 6201297.441630338 ] }, "min_20m": { "gradient_pct": -6.296940727945071, "start_distance_m": 455.0, "end_distance_m": 475.0, "midpoint_distance_m": 465.0, "start_elevation_m": 337.3420683221996, "end_elevation_m": 336.0826801766106, "start_xy": [ 1227672.3352161322, 6201300.288440704 ], "end_xy": [ 1227691.9167649497, 6201296.244296609 ] }, "min_25m": { "gradient_pct": -5.9880566324843585, "start_distance_m": 455.0, "end_distance_m": 480.0, "midpoint_distance_m": 467.5, "start_elevation_m": 337.3420683221996, "end_elevation_m": 335.84505416407853, "start_xy": [ 1227672.3352161322, 6201300.288440704 ], "end_xy": [ 1227696.7680313217, 6201295.0338361235 ] }, "min_50m": { "gradient_pct": -4.641438820937651, "start_distance_m": 453.0, "end_distance_m": 503.0, "midpoint_distance_m": 478.0, "start_elevation_m": 337.418147941442, "end_elevation_m": 335.09742853097316, "start_xy": [ 1227670.3688734313, 6201300.424790058 ], "end_xy": [ 1227719.1570292164, 6201289.987828523 ] }, "min_100m": { "gradient_pct": -3.900819862316837, "start_distance_m": 454.0, "end_distance_m": 554.0, "midpoint_distance_m": 504.0, "start_elevation_m": 337.37853309112353, "end_elevation_m": 333.4777132288067, "start_xy": [ 1227671.3533909142, 6201300.478228062 ], "end_xy": [ 1227768.1471428112, 6201301.785429926 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 28.894084959497945, "start_distance_m": 3156.0, "end_distance_m": 3158.0, "midpoint_distance_m": 3157.0, "start_elevation_m": 394.75245333717294, "end_elevation_m": 395.3303350363629, "start_xy": [ 1227061.259120663, 6202749.806989805 ], "end_xy": [ 1227060.9425604027, 6202747.839927062 ] }, "max_3m": { "gradient_pct": 28.551062930860855, "start_distance_m": 3155.0, "end_distance_m": 3158.0, "midpoint_distance_m": 3156.5, "start_elevation_m": 394.47380314843707, "end_elevation_m": 395.3303350363629, "start_xy": [ 1227061.2614899736, 6202750.806986998 ], "end_xy": [ 1227060.9425604027, 6202747.839927062 ] } }, "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": 0.063, "obstruction_max_height_m": 23.92, "flagged_windows_m": [ 20, 25, 50, 100 ] }, "review": [], "extent": [] }, "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-co4", "road_pbf": "block-batch-fr-co4.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_E1226-N6202_0m5@21LHDCorseVS-2025-04-02.tif", "data/cache/fr/ign-lidarhd_dtm_E1227-N6201_0m5@21LHDCorseVS-2025-04-02.tif", "data/cache/fr/ign-lidarhd_dtm_E1227-N6202_0m5@21LHDCorseVS-2025-04-02.tif" ], "calculated_at": "2026-09-25T00:16:46+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-co4.osm.pbf", "osm_snapshot": "", "run_id": "fr-co4", "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": [ "E1226-N6202", "E1227-N6201", "E1227-N6202" ], "elevation_blocks": [ "21LHDCorseVS@2025-04-02" ], "ign_dalles": [ "LHD_FXX_1226_6203_MNT_O_0M50_LAMB93_IGN78", "LHD_FXX_1227_6202_MNT_O_0M50_LAMB93_IGN78", "LHD_FXX_1227_6203_MNT_O_0M50_LAMB93_IGN78" ], "ign_missions": [ "21LHDCorseVS" ], "ign_editions": [ "2025-04-02" ], "ign_dsm_edition": { "LHD_FXX_1226_6203_MNT_O_0M50_LAMB93_IGN78": "2025-04-02", "LHD_FXX_1227_6202_MNT_O_0M50_LAMB93_IGN78": "2025-04-02", "LHD_FXX_1227_6203_MNT_O_0M50_LAMB93_IGN78": "2025-04-02" }, "climb_origin": "discovered", "structure_own_ways": 3, "carriageway": { "stations": 141, "stations_resolved": 141, "width_median_m": 6.5, "width_p10_m": 5.25, "width_min_m": 3.5, "width_max_m": 11.25, "bounded_share": 0.603, "unbounded_share": 0.397, "confidence_median": 0.66, "width_median_bounded_m": 6.25, "window_m": [ 3148.0, 3173.0 ], "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": 141, "stations_resolved": 141, "width_median_m": 6.5, "width_p10_m": 1.5, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.78, "unbounded_share": 0.22, "confidence_median": 1.0, "width_median_bounded_m": 5.62, "window_m": [ 3148.0, 3173.0 ], "width_at_max25_m": 2.25, "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": "Ville-di-Pietrabugno", "county": "Haute-Corse", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }