{ "ocl_version": "0.1.0", "name": "Discovered lane (42.4364, 9.3071)", "slug": "discovered-lane-42-4364-9-3071", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 32.49185718918284, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 312.0, "end_distance_m": 314.0, "start_elevation_m": 826.6606892241906, "end_elevation_m": 827.3105263679743, "min_gradient_pct": -16.166673688798028 }, { "window_m": 3.0, "max_gradient_pct": 27.59512518751232, "diagnostic": true, "flags": [], "start_distance_m": 57.0, "end_distance_m": 60.0, "start_elevation_m": 803.73613172221, "end_elevation_m": 804.5639854778353, "min_gradient_pct": -12.864275518901044 }, { "window_m": 5.0, "max_gradient_pct": 26.284303236627693, "diagnostic": false, "flags": [], "start_distance_m": 57.0, "end_distance_m": 62.0, "start_elevation_m": 803.73613172221, "end_elevation_m": 805.0503468840413, "min_gradient_pct": -7.767401208636784 }, { "window_m": 10.0, "max_gradient_pct": 24.62269825480803, "diagnostic": false, "flags": [], "start_distance_m": 54.0, "end_distance_m": 64.0, "start_elevation_m": 803.0585769054458, "end_elevation_m": 805.5208467309266, "min_gradient_pct": -2.3844454247944213 }, { "window_m": 20.0, "max_gradient_pct": 23.320057736643207, "diagnostic": false, "flags": [], "start_distance_m": 40.0, "end_distance_m": 60.0, "start_elevation_m": 799.8999739305067, "end_elevation_m": 804.5639854778353, "min_gradient_pct": 0.34250986756489965 }, { "window_m": 25.0, "max_gradient_pct": 23.44056678335619, "diagnostic": false, "flags": [], "start_distance_m": 38.0, "end_distance_m": 63.0, "start_elevation_m": 799.4300245340503, "end_elevation_m": 805.2901662298893, "min_gradient_pct": 1.0067879949792768 }, { "window_m": 50.0, "max_gradient_pct": 22.480079667202745, "diagnostic": false, "flags": [], "start_distance_m": 14.0, "end_distance_m": 64.0, "start_elevation_m": 794.2808068973252, "end_elevation_m": 805.5208467309266, "min_gradient_pct": 2.5708974800854776 }, { "window_m": 100.0, "max_gradient_pct": 18.065210806118557, "diagnostic": false, "flags": [], "start_distance_m": 0.0, "end_distance_m": 100.0, "start_elevation_m": 792.4199403339312, "end_elevation_m": 810.4851511400498, "min_gradient_pct": 3.366769078261882 } ], "shape": { "ascent_concentration": 0.457, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 98.0, "shape_class": "stepped" }, "length_m": 338.8310125175134, "start_elevation_m": 792.4199403339312, "end_elevation_m": 828.1065690058438, "endpoint_gain_m": 35.68662867191256, "overall_gradient_pct": 10.532279323182673, "accumulated_ascent_m": 36.266392382284494, "window_maxima": { "max_5m": { "gradient_pct": 26.284303236627693, "start_distance_m": 57.0, "end_distance_m": 62.0, "midpoint_distance_m": 59.5, "start_elevation_m": 803.73613172221, "end_elevation_m": 805.0503468840413, "start_xy": [ 1219185.083924049, 6169189.814987105 ], "end_xy": [ 1219187.7862785454, 6169194.0218006475 ] }, "max_10m": { "gradient_pct": 24.62269825480803, "start_distance_m": 54.0, "end_distance_m": 64.0, "midpoint_distance_m": 59.0, "start_elevation_m": 803.0585769054458, "end_elevation_m": 805.5208467309266, "start_xy": [ 1219183.4589570428, 6169187.294421841 ], "end_xy": [ 1219188.867220344, 6169195.704526064 ] }, "max_20m": { "gradient_pct": 23.320057736643207, "start_distance_m": 40.0, "end_distance_m": 60.0, "midpoint_distance_m": 50.0, "start_elevation_m": 799.8999739305067, "end_elevation_m": 804.5639854778353, "start_xy": [ 1219172.3226308364, 6169178.981316797 ], "end_xy": [ 1219186.705336747, 6169192.33907523 ] }, "max_25m": { "gradient_pct": 23.44056678335619, "start_distance_m": 38.0, "end_distance_m": 63.0, "midpoint_distance_m": 50.5, "start_elevation_m": 799.4300245340503, "end_elevation_m": 805.2901662298893, "start_xy": [ 1219171.0495419314, 6169177.438836768 ], "end_xy": [ 1219188.3267494447, 6169194.863163356 ] }, "max_50m": { "gradient_pct": 22.480079667202745, "start_distance_m": 14.0, "end_distance_m": 64.0, "midpoint_distance_m": 39.0, "start_elevation_m": 794.2808068973252, "end_elevation_m": 805.5208467309266, "start_xy": [ 1219158.6902796596, 6169157.632974391 ], "end_xy": [ 1219188.867220344, 6169195.704526064 ] }, "max_100m": { "gradient_pct": 18.065210806118557, "start_distance_m": 0.0, "end_distance_m": 100.0, "midpoint_distance_m": 50.0, "start_elevation_m": 792.4199403339312, "end_elevation_m": 810.4851511400498, "start_xy": [ 1219156.653, 6169143.782 ], "end_xy": [ 1219200.4757213625, 6169229.393314526 ] } }, "window_minima": { "min_5m": { "gradient_pct": -7.767401208636784, "start_distance_m": 305.0, "end_distance_m": 310.0, "midpoint_distance_m": 307.5, "start_elevation_m": 827.0242437735183, "end_elevation_m": 826.6358737130864, "start_xy": [ 1219246.5955095137, 6169421.201265151 ], "end_xy": [ 1219248.6799520042, 6169425.74605332 ] }, "min_10m": { "gradient_pct": -2.3844454247944213, "start_distance_m": 301.0, "end_distance_m": 311.0, "midpoint_distance_m": 306.0, "start_elevation_m": 826.8504604090112, "end_elevation_m": 826.6120158665318, "start_xy": [ 1219244.9279555215, 6169417.565434615 ], "end_xy": [ 1219249.0968405022, 6169426.6550109545 ] }, "min_20m": { "gradient_pct": 0.34250986756489965, "start_distance_m": 291.0, "end_distance_m": 311.0, "midpoint_distance_m": 301.0, "start_elevation_m": 826.5435138930188, "end_elevation_m": 826.6120158665318, "start_xy": [ 1219240.7771622778, 6169408.469402903 ], "end_xy": [ 1219249.0968405022, 6169426.6550109545 ] }, "min_25m": { "gradient_pct": 1.0067879949792768, "start_distance_m": 216.0, "end_distance_m": 241.0, "midpoint_distance_m": 228.5, "start_elevation_m": 823.9122008291147, "end_elevation_m": 824.1638978278595, "start_xy": [ 1219230.2545129282, 6169335.381852683 ], "end_xy": [ 1219230.0101201984, 6169359.756520653 ] }, "min_50m": { "gradient_pct": 2.5708974800854776, "start_distance_m": 216.0, "end_distance_m": 266.0, "midpoint_distance_m": 241.0, "start_elevation_m": 823.9122008291147, "end_elevation_m": 825.1976495691574, "start_xy": [ 1219230.2545129282, 6169335.381852683 ], "end_xy": [ 1219234.4739044665, 6169384.277155524 ] }, "min_100m": { "gradient_pct": 3.366769078261882, "start_distance_m": 212.0, "end_distance_m": 312.0, "midpoint_distance_m": 262.0, "start_elevation_m": 823.2939201459287, "end_elevation_m": 826.6606892241906, "start_xy": [ 1219227.5101427282, 6169332.560865117 ], "end_xy": [ 1219249.5137290002, 6169427.563968588 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 32.49185718918284, "start_distance_m": 312.0, "end_distance_m": 314.0, "midpoint_distance_m": 313.0, "start_elevation_m": 826.6606892241906, "end_elevation_m": 827.3105263679743, "start_xy": [ 1219249.5137290002, 6169427.563968588 ], "end_xy": [ 1219250.3475059965, 6169429.381883856 ] }, "max_3m": { "gradient_pct": 27.59512518751232, "start_distance_m": 57.0, "end_distance_m": 60.0, "midpoint_distance_m": 58.5, "start_elevation_m": 803.73613172221, "end_elevation_m": 804.5639854778353, "start_xy": [ 1219185.083924049, 6169189.814987105 ], "end_xy": [ 1219186.705336747, 6169192.33907523 ] } }, "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": 0.062, "windows_resited": [], "windows_unresolved": [], "minima_resited": [], "minima_unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.1, "obstruction_max_height_m": 15.23, "flagged_windows_m": [ 2 ] }, "excluded_ranges_m": [ [ 318.0, 338.0 ] ], "review": [], "extent": [ "may_start_earlier" ] }, "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-co3", "road_pbf": "block-batch-fr-co3.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_E1219-N6169_0m5@21LHDCorseVS-2025-04-02.tif" ], "calculated_at": "2026-09-25T00:50:17+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-co3.osm.pbf", "osm_snapshot": "", "run_id": "fr-co3", "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": [ "E1219-N6169" ], "elevation_blocks": [ "21LHDCorseVS@2025-04-02" ], "ign_dalles": [ "LHD_FXX_1219_6170_MNT_O_0M50_LAMB93_IGN78" ], "ign_missions": [ "21LHDCorseVS" ], "ign_editions": [ "2025-04-02" ], "ign_dsm_edition": { "LHD_FXX_1219_6170_MNT_O_0M50_LAMB93_IGN78": "2025-04-02" }, "climb_origin": "discovered", "structure_own_ways": 2, "structure_mask_ranges_m": [ [ 323.8, 353.8 ] ], "carriageway": { "stations": 20, "stations_resolved": 20, "width_median_m": 4.5, "width_p10_m": 3.45, "width_min_m": 1.0, "width_max_m": 7.25, "bounded_share": 0.4, "unbounded_share": 0.6, "confidence_median": 0.0, "width_median_bounded_m": 4.25, "window_m": [ 38.0, 63.0 ], "width_at_max25_m": 4.25, "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": 20, "stations_resolved": 20, "width_median_m": 4.5, "width_p10_m": 2.23, "width_min_m": 1.25, "width_max_m": 9.25, "bounded_share": 0.95, "unbounded_share": 0.05, "confidence_median": 1.0, "width_median_bounded_m": 4.5, "window_m": [ 38.0, 63.0 ], "width_at_max25_m": 4.0, "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": "Morosaglia", "county": "Haute-Corse", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }