{ "ocl_version": "0.1.0", "name": "Discovered lane (44.8834, 2.8411)", "slug": "discovered-lane-44-8834-2-8411", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 38.05457345799823, "diagnostic": true, "flags": [ "structure_excluded", "structure_excluded_min", "texture_excluded", "texture_excluded", "canopy_or_structure" ], "start_distance_m": 3256.0, "end_distance_m": 3258.0, "start_elevation_m": 776.2115535415068, "end_elevation_m": 776.9726450106667, "min_gradient_pct": -51.26576834762773, "suppressed_max_gradient_pct": 337.42446120982663, "suppressed_location_m": [ 1325.0, 1327.0 ], "suppressed_min_gradient_pct": -175.21082494637312, "suppressed_min_location_m": [ 1317.0, 1319.0 ] }, { "window_m": 3.0, "max_gradient_pct": 31.221257915600138, "diagnostic": true, "flags": [ "structure_excluded", "structure_excluded_min", "no_bench_excluded_min", "texture_excluded", "texture_excluded", "canopy_or_structure" ], "start_distance_m": 3255.0, "end_distance_m": 3258.0, "start_elevation_m": 776.0360072731987, "end_elevation_m": 776.9726450106667, "min_gradient_pct": -34.85043756476595, "suppressed_max_gradient_pct": 264.13955024449933, "suppressed_location_m": [ 1324.0, 1327.0 ], "suppressed_min_gradient_pct": -139.37440184636216, "suppressed_min_location_m": [ 7477.0, 7480.0 ] }, { "window_m": 5.0, "max_gradient_pct": 24.99167761868648, "diagnostic": false, "flags": [ "structure_excluded", "structure_excluded_min", "no_bench_excluded_min", "texture_excluded", "texture_excluded", "suppression_unstable", "canopy_or_structure" ], "start_distance_m": 3253.0, "end_distance_m": 3258.0, "start_elevation_m": 775.7230611297324, "end_elevation_m": 776.9726450106667, "min_gradient_pct": -20.37810745529896, "suppressed_max_gradient_pct": 171.935964904726, "suppressed_location_m": [ 1322.0, 1327.0 ], "suppressed_min_gradient_pct": -103.08224536657463, "suppressed_min_location_m": [ 7475.0, 7480.0 ] }, { "window_m": 10.0, "max_gradient_pct": 22.658739511915655, "diagnostic": false, "flags": [ "structure_excluded", "structure_excluded_min", "no_bench_excluded_min", "texture_excluded" ], "start_distance_m": 9524.0, "end_distance_m": 9534.0, "start_elevation_m": 911.1800815454524, "end_elevation_m": 913.4459554966439, "min_gradient_pct": -9.39492660008682, "suppressed_max_gradient_pct": 93.88707472740066, "suppressed_location_m": [ 1320.0, 1330.0 ], "suppressed_min_gradient_pct": -70.83817755837686, "suppressed_min_location_m": [ 1310.0, 1320.0 ] }, { "window_m": 20.0, "max_gradient_pct": 20.594137066806866, "diagnostic": false, "flags": [ "structure_excluded", "structure_excluded_min", "no_bench_excluded_min", "texture_excluded" ], "start_distance_m": 9519.0, "end_distance_m": 9539.0, "start_elevation_m": 910.2429685212413, "end_elevation_m": 914.3617959346027, "min_gradient_pct": -5.886988780853812, "suppressed_max_gradient_pct": 49.252517017964124, "suppressed_location_m": [ 1320.0, 1340.0 ], "suppressed_min_gradient_pct": -39.8072714405572, "suppressed_min_location_m": [ 1112.0, 1132.0 ] }, { "window_m": 25.0, "max_gradient_pct": 20.103693662420028, "diagnostic": false, "flags": [ "structure_excluded", "structure_excluded_min", "no_bench_excluded_min" ], "start_distance_m": 9524.0, "end_distance_m": 9549.0, "start_elevation_m": 911.1800815454524, "end_elevation_m": 916.2060049610574, "min_gradient_pct": -5.683493175258718, "suppressed_max_gradient_pct": 40.56233502596797, "suppressed_location_m": [ 1321.0, 1346.0 ], "suppressed_min_gradient_pct": -35.06172657599063, "suppressed_min_location_m": [ 1104.0, 1129.0 ] }, { "window_m": 50.0, "max_gradient_pct": 18.148685916715067, "diagnostic": false, "flags": [ "structure_excluded", "structure_excluded_min", "no_bench_excluded_min" ], "start_distance_m": 9514.0, "end_distance_m": 9564.0, "start_elevation_m": 909.6742365821306, "end_elevation_m": 918.7485795404881, "min_gradient_pct": -5.408444158796783, "suppressed_max_gradient_pct": 22.726369282084306, "suppressed_location_m": [ 1321.0, 1371.0 ], "suppressed_min_gradient_pct": -25.078631446575173, "suppressed_min_location_m": [ 1095.0, 1145.0 ] }, { "window_m": 100.0, "max_gradient_pct": 14.165285550924409, "diagnostic": false, "flags": [ "structure_excluded", "structure_excluded_min" ], "start_distance_m": 9464.0, "end_distance_m": 9564.0, "start_elevation_m": 904.5832939895637, "end_elevation_m": 918.7485795404881, "min_gradient_pct": -4.931623704153708, "suppressed_max_gradient_pct": 14.297581475252514, "suppressed_location_m": [ 1320.0, 1420.0 ], "suppressed_min_gradient_pct": -11.717363652690665, "suppressed_min_location_m": [ 1078.0, 1178.0 ] } ], "shape": { "ascent_concentration": 0.432, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 74.0, "shape_class": "sustained" }, "length_m": 9564.257136702117, "start_elevation_m": 656.2500569384943, "end_elevation_m": 918.7909897033556, "endpoint_gain_m": 262.5409327648614, "overall_gradient_pct": 2.745021688693211, "accumulated_ascent_m": 382.3431095058967, "window_maxima": { "max_5m": { "gradient_pct": 24.99167761868648, "start_distance_m": 3253.0, "end_distance_m": 3258.0, "midpoint_distance_m": 3255.5, "start_elevation_m": 775.7230611297324, "end_elevation_m": 776.9726450106667, "start_xy": [ 687683.815442614, 6419676.67589678 ], "end_xy": [ 687679.0361401407, 6419675.206792336 ] }, "max_10m": { "gradient_pct": 22.658739511915655, "start_distance_m": 9524.0, "end_distance_m": 9534.0, "midpoint_distance_m": 9529.0, "start_elevation_m": 911.1800815454524, "end_elevation_m": 913.4459554966439, "start_xy": [ 687134.3696998494, 6424634.214543308 ], "end_xy": [ 687136.0190280958, 6424644.0771704735 ] }, "max_20m": { "gradient_pct": 20.594137066806866, "start_distance_m": 9519.0, "end_distance_m": 9539.0, "midpoint_distance_m": 9529.0, "start_elevation_m": 910.2429685212413, "end_elevation_m": 914.3617959346027, "start_xy": [ 687133.0472344987, 6424629.424219325 ], "end_xy": [ 687136.9104824638, 6424648.997059609 ] }, "max_25m": { "gradient_pct": 20.103693662420028, "start_distance_m": 9524.0, "end_distance_m": 9549.0, "midpoint_distance_m": 9536.5, "start_elevation_m": 911.1800815454524, "end_elevation_m": 916.2060049610574, "start_xy": [ 687134.3696998494, 6424634.214543308 ], "end_xy": [ 687139.3505712916, 6424658.693247698 ] }, "max_50m": { "gradient_pct": 18.148685916715067, "start_distance_m": 9514.0, "end_distance_m": 9564.0, "midpoint_distance_m": 9539.0, "start_elevation_m": 909.6742365821306, "end_elevation_m": 918.7485795404881, "start_xy": [ 687131.1901887663, 6424624.781872812 ], "end_xy": [ 687142.0645238116, 6424673.433068982 ] }, "max_100m": { "gradient_pct": 14.165285550924409, "start_distance_m": 9464.0, "end_distance_m": 9564.0, "midpoint_distance_m": 9514.0, "start_elevation_m": 904.5832939895637, "end_elevation_m": 918.7485795404881, "start_xy": [ 687175.7381479495, 6424608.031904005 ], "end_xy": [ 687142.0645238116, 6424673.433068982 ] } }, "window_minima": { "min_5m": { "gradient_pct": -20.37810745529896, "start_distance_m": 4212.0, "end_distance_m": 4217.0, "midpoint_distance_m": 4214.5, "start_elevation_m": 839.3061620125424, "end_elevation_m": 838.2872566397774, "start_xy": [ 687423.1337100184, 6420390.322674916 ], "end_xy": [ 687424.127410388, 6420395.22293609 ] }, "min_10m": { "gradient_pct": -9.39492660008682, "start_distance_m": 519.0, "end_distance_m": 529.0, "midpoint_distance_m": 524.0, "start_elevation_m": 659.3243089526152, "end_elevation_m": 658.3848162926065, "start_xy": [ 688989.1332562825, 6419714.734063089 ], "end_xy": [ 688979.3921236204, 6419714.869406018 ] }, "min_20m": { "gradient_pct": -5.886988780853812, "start_distance_m": 642.0, "end_distance_m": 662.0, "midpoint_distance_m": 652.0, "start_elevation_m": 656.5540316844608, "end_elevation_m": 655.3766339282901, "start_xy": [ 688910.6307613428, 6419643.865359363 ], "end_xy": [ 688894.1242643213, 6419653.726578799 ] }, "min_25m": { "gradient_pct": -5.683493175258718, "start_distance_m": 6885.0, "end_distance_m": 6910.0, "midpoint_distance_m": 6897.5, "start_elevation_m": 849.40506839143, "end_elevation_m": 847.9841950976153, "start_xy": [ 687787.7047882164, 6422441.787822618 ], "end_xy": [ 687809.24661766, 6422454.458177014 ] }, "min_50m": { "gradient_pct": -5.408444158796783, "start_distance_m": 6868.0, "end_distance_m": 6918.0, "midpoint_distance_m": 6893.0, "start_elevation_m": 850.3308288552929, "end_elevation_m": 847.6266067758945, "start_xy": [ 687773.8108980505, 6422431.991914489 ], "end_xy": [ 687816.1772587249, 6422458.453951586 ] }, "min_100m": { "gradient_pct": -4.931623704153708, "start_distance_m": 6830.0, "end_distance_m": 6930.0, "midpoint_distance_m": 6880.0, "start_elevation_m": 852.0350316617062, "end_elevation_m": 847.1034079575525, "start_xy": [ 687748.3962240772, 6422403.852379786 ], "end_xy": [ 687826.5732203221, 6422464.447613444 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 38.05457345799823, "start_distance_m": 3256.0, "end_distance_m": 3258.0, "midpoint_distance_m": 3257.0, "start_elevation_m": 776.2115535415068, "end_elevation_m": 776.9726450106667, "start_xy": [ 687680.9478611301, 6419675.794434113 ], "end_xy": [ 687679.0361401407, 6419675.206792336 ] }, "max_3m": { "gradient_pct": 31.221257915600138, "start_distance_m": 3255.0, "end_distance_m": 3258.0, "midpoint_distance_m": 3256.5, "start_elevation_m": 776.0360072731987, "end_elevation_m": 776.9726450106667, "start_xy": [ 687681.9037216248, 6419676.088255002 ], "end_xy": [ 687679.0361401407, 6419675.206792336 ] } }, "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": 0.025, "windows_resited": [ 2.0, 3.0, 5.0, 10.0, 20.0, 25.0, 50.0, 100.0 ], "windows_unresolved": [], "minima_resited": [ 2.0, 3.0, 5.0, 10.0, 20.0, 25.0, 50.0, 100.0 ], "minima_unresolved": [] }, "no_bench_suppression": { "masked_fraction": 0.049, "windows_resited": [], "windows_unresolved": [], "minima_resited": [ 3.0, 5.0, 10.0, 20.0, 25.0, 50.0 ], "minima_unresolved": [] }, "texture_suppression": { "masked_fraction": 0.051, "windows_resited": [ 2.0, 3.0, 5.0 ], "windows_unresolved": [], "minima_resited": [], "minima_unresolved": [] }, "texture_windows": { "rounds": 2, "windows_masked": [ { "window_m": 5.0, "start_m": 3570.0, "end_m": 3575.0, "raw_pct": 36.67, "reason": "short-step" }, { "window_m": 5.0, "start_m": 3377.0, "end_m": 3382.0, "raw_pct": 28.65, "reason": "short-step" } ], "advisory": [], "unresolved": [], "unstable": [ { "window_m": 5.0, "start_m": 3253.0, "end_m": 3258.0, "raw_pct": 24.99, "reason": "mask-edge", "perturbations": [ "phase+0.000/mask+0", "phase+0.333/mask+1", "phase+0.667/mask-1" ], "perturbation_reasons": [ "mask-edge", "", "" ] } ] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.278, "obstruction_max_height_m": 28.49, "flagged_windows_m": [ 2, 3, 5 ] }, "excluded_ranges_m": [ [ 0.0, 39.0 ], [ 530.0, 536.0 ], [ 597.0, 606.0 ], [ 609.0, 616.0 ], [ 636.0, 641.0 ], [ 1058.0, 1104.0 ], [ 1115.0, 1290.0 ], [ 1301.0, 1332.0 ], [ 2680.0, 2710.0 ], [ 3260.0, 3300.0 ], [ 3375.0, 3384.0 ], [ 3568.0, 3577.0 ], [ 4206.0, 4211.0 ], [ 7471.0, 7491.0 ], [ 8164.0, 8200.0 ], [ 8465.0, 8470.0 ] ], "review": [], "extent": [ "may_continue_beyond_end" ] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "1cc9fdcd6556a02163cb21acb2293cad3067d2a1", "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-mc4", "road_pbf": "block-batch-fr-mc4.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:af4eae1f5df9e232" }, "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_E687-N6419_0m5@21LHD4LN-2025-02-10.tif", "data/cache/fr/ign-lidarhd_dtm_E687-N6420_0m5@21LHD4LN-2025-02-10.tif", "data/cache/fr/ign-lidarhd_dtm_E687-N6421_0m5@21LHD4LN-2025-02-10.tif", "data/cache/fr/ign-lidarhd_dtm_E687-N6422_0m5@21LHD4LN-2025-02-10.tif", "data/cache/fr/ign-lidarhd_dtm_E687-N6423_0m5@21LHD4LN-2025-02-10.tif", "data/cache/fr/ign-lidarhd_dtm_E687-N6424_0m5@21LHD4LN-2025-02-10.tif", "data/cache/fr/ign-lidarhd_dtm_E688-N6419_0m5@21LHD4LN-2025-02-10.tif", "data/cache/fr/ign-lidarhd_dtm_E688-N6420_0m5@21LHD4LN-2025-02-10.tif", "data/cache/fr/ign-lidarhd_dtm_E688-N6422_0m5@21LHD4LN-2025-02-10.tif", "data/cache/fr/ign-lidarhd_dtm_E689-N6419_0m5@21LHD4LN-2025-02-10.tif" ], "calculated_at": "2026-09-22T15:59:19+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc4.osm.pbf", "osm_snapshot": "", "run_id": "fr-mc4", "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": [ "E687-N6419", "E687-N6420", "E687-N6421", "E687-N6422", "E687-N6423", "E687-N6424", "E688-N6419", "E688-N6420", "E688-N6422", "E689-N6419" ], "elevation_blocks": [ "21LHD4LN@2025-02-10" ], "ign_dalles": [ "LHD_FXX_0687_6420_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0687_6421_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0687_6422_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0687_6423_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0687_6424_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0687_6425_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0688_6420_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0688_6421_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0688_6423_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0689_6420_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD4LN" ], "ign_editions": [ "2025-02-10" ], "ign_dsm_edition": { "LHD_FXX_0687_6420_MNT_O_0M50_LAMB93_IGN69": "2025-02-10", "LHD_FXX_0687_6421_MNT_O_0M50_LAMB93_IGN69": "2025-02-10", "LHD_FXX_0687_6422_MNT_O_0M50_LAMB93_IGN69": "2025-02-10", "LHD_FXX_0687_6423_MNT_O_0M50_LAMB93_IGN69": "2025-02-10", "LHD_FXX_0687_6424_MNT_O_0M50_LAMB93_IGN69": "2025-02-10", "LHD_FXX_0687_6425_MNT_O_0M50_LAMB93_IGN69": "2025-02-10", "LHD_FXX_0688_6420_MNT_O_0M50_LAMB93_IGN69": "2025-02-10", "LHD_FXX_0688_6421_MNT_O_0M50_LAMB93_IGN69": "2025-02-10", "LHD_FXX_0688_6423_MNT_O_0M50_LAMB93_IGN69": "2025-02-10", "LHD_FXX_0689_6420_MNT_O_0M50_LAMB93_IGN69": "2025-02-10" }, "climb_origin": "discovered", "structure_own_ways": 3, "structure_mask_ranges_m": [ [ 0.0, 15.0 ] ], "mask_basin_extension_m": 19.0, "suppression_unstable": [ 5.0 ], "carriageway": { "stations": 389, "stations_resolved": 389, "width_median_m": 5.75, "width_p10_m": 3.0, "width_min_m": 0.5, "width_max_m": 11.5, "bounded_share": 0.285, "unbounded_share": 0.715, "confidence_median": 0.0, "width_median_bounded_m": 6.0, "window_m": [ 9524.0, 9549.0 ], "width_at_max25_m": 4.0, "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": 389, "stations_resolved": 389, "width_median_m": 5.0, "width_p10_m": 0.75, "width_min_m": 0.0, "width_max_m": 12.0, "bounded_share": 0.848, "unbounded_share": 0.152, "confidence_median": 1.0, "width_median_bounded_m": 4.0, "window_m": [ 9524.0, 9549.0 ], "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": "Sainte-Marie", "county": "Cantal", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }