{ "ocl_version": "0.1.0", "name": "Lane near Roumillac", "slug": "discovered-lane-44-3689-0-7131", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 35.712716547082834, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 1679.0, "end_distance_m": 1681.0, "start_elevation_m": 154.11260726255946, "end_elevation_m": 154.82686159350112, "min_gradient_pct": -10.112009726317694 }, { "window_m": 3.0, "max_gradient_pct": 33.31015884718246, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 1678.0, "end_distance_m": 1681.0, "start_elevation_m": 153.82755682808565, "end_elevation_m": 154.82686159350112, "min_gradient_pct": -10.032191128322173 }, { "window_m": 5.0, "max_gradient_pct": 28.02641484019432, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1676.0, "end_distance_m": 1681.0, "start_elevation_m": 153.4255408514914, "end_elevation_m": 154.82686159350112, "min_gradient_pct": -9.259824123343492 }, { "window_m": 10.0, "max_gradient_pct": 23.476310445681463, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1762.0, "end_distance_m": 1772.0, "start_elevation_m": 169.66976529039286, "end_elevation_m": 172.017396334961, "min_gradient_pct": -3.152237962696063 }, { "window_m": 20.0, "max_gradient_pct": 23.08310783656026, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1762.0, "end_distance_m": 1782.0, "start_elevation_m": 169.66976529039286, "end_elevation_m": 174.2863868577049, "min_gradient_pct": -1.1035907602408201 }, { "window_m": 25.0, "max_gradient_pct": 22.76493779665134, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1755.0, "end_distance_m": 1780.0, "start_elevation_m": 168.17326539481337, "end_elevation_m": 173.8644998439762, "min_gradient_pct": -1.1262009761076115 }, { "window_m": 50.0, "max_gradient_pct": 21.61168918262956, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1734.0, "end_distance_m": 1784.0, "start_elevation_m": 163.87328374978836, "end_elevation_m": 174.67912834110314, "min_gradient_pct": -0.49701752060730087 }, { "window_m": 100.0, "max_gradient_pct": 20.057079847883415, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1612.0, "end_distance_m": 1712.0, "start_elevation_m": 140.13642505279063, "end_elevation_m": 160.19350490067404, "min_gradient_pct": 2.1410033397071544 } ], "shape": { "ascent_concentration": 0.499, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 200.0, "shape_class": "stepped" }, "length_m": 2176.992377342957, "start_elevation_m": 91.79516438293436, "end_elevation_m": 190.24349046153225, "endpoint_gain_m": 98.44832607859789, "overall_gradient_pct": 4.52221730784171, "accumulated_ascent_m": 101.26387743266848, "window_maxima": { "max_5m": { "gradient_pct": 28.02641484019432, "start_distance_m": 1676.0, "end_distance_m": 1681.0, "midpoint_distance_m": 1678.5, "start_elevation_m": 153.4255408514914, "end_elevation_m": 154.82686159350112, "start_xy": [ 517902.3610225444, 6365305.1624306245 ], "end_xy": [ 517898.5093978869, 6365301.974172872 ] }, "max_10m": { "gradient_pct": 23.476310445681463, "start_distance_m": 1762.0, "end_distance_m": 1772.0, "midpoint_distance_m": 1767.0, "start_elevation_m": 169.66976529039286, "end_elevation_m": 172.017396334961, "start_xy": [ 517830.4371999961, 6365258.626669301 ], "end_xy": [ 517821.20863055927, 6365254.775240196 ] }, "max_20m": { "gradient_pct": 23.08310783656026, "start_distance_m": 1762.0, "end_distance_m": 1782.0, "midpoint_distance_m": 1772.0, "start_elevation_m": 169.66976529039286, "end_elevation_m": 174.2863868577049, "start_xy": [ 517830.4371999961, 6365258.626669301 ], "end_xy": [ 517812.01420257177, 6365250.848841539 ] }, "max_25m": { "gradient_pct": 22.76493779665134, "start_distance_m": 1755.0, "end_distance_m": 1780.0, "midpoint_distance_m": 1767.5, "start_elevation_m": 168.17326539481337, "end_elevation_m": 173.8644998439762, "start_xy": [ 517836.8971986019, 6365261.322669675 ], "end_xy": [ 517813.8257750098, 6365251.694096913 ] }, "max_50m": { "gradient_pct": 21.61168918262956, "start_distance_m": 1734.0, "end_distance_m": 1784.0, "midpoint_distance_m": 1759.0, "start_elevation_m": 163.87328374978836, "end_elevation_m": 174.67912834110314, "start_xy": [ 517855.2429189958, 6365271.406399983 ], "end_xy": [ 517810.22149001894, 6365249.962172659 ] }, "max_100m": { "gradient_pct": 20.057079847883415, "start_distance_m": 1612.0, "end_distance_m": 1712.0, "midpoint_distance_m": 1662.0, "start_elevation_m": 140.13642505279063, "end_elevation_m": 160.19350490067404, "start_xy": [ 517951.5538859761, 6365346.093258276 ], "end_xy": [ 517873.39637224446, 6365283.8342773225 ] } }, "window_minima": { "min_5m": { "gradient_pct": -9.259824123343492, "start_distance_m": 1594.0, "end_distance_m": 1599.0, "midpoint_distance_m": 1596.5, "start_elevation_m": 139.4375535447766, "end_elevation_m": 138.97456233860942, "start_xy": [ 517964.1022763753, 6365358.383414138 ], "end_xy": [ 517960.9385401607, 6365355.089272162 ] }, "min_10m": { "gradient_pct": -3.152237962696063, "start_distance_m": 1593.0, "end_distance_m": 1603.0, "midpoint_distance_m": 1598.0, "start_elevation_m": 139.34128999684492, "end_elevation_m": 139.02606620057531, "start_xy": [ 517963.10361774615, 6365358.435191957 ], "end_xy": [ 517958.0509542578, 6365352.321267889 ] }, "min_20m": { "gradient_pct": -1.1035907602408201, "start_distance_m": 6.0, "end_distance_m": 26.0, "midpoint_distance_m": 16.0, "start_elevation_m": 91.75046810135763, "end_elevation_m": 91.52974994930946, "start_xy": [ 517860.2337167478, 6366542.490224365 ], "end_xy": [ 517872.72943924036, 6366526.874305584 ] }, "min_25m": { "gradient_pct": -1.1262009761076115, "start_distance_m": 1.0, "end_distance_m": 26.0, "midpoint_distance_m": 13.5, "start_elevation_m": 91.81130019333636, "end_elevation_m": 91.52974994930946, "start_xy": [ 517857.1097861246, 6366546.394204061 ], "end_xy": [ 517872.72943924036, 6366526.874305584 ] }, "min_50m": { "gradient_pct": -0.49701752060730087, "start_distance_m": 1.0, "end_distance_m": 51.0, "midpoint_distance_m": 26.0, "start_elevation_m": 91.81130019333636, "end_elevation_m": 91.56279143303271, "start_xy": [ 517857.1097861246, 6366546.394204061 ], "end_xy": [ 517888.14211203315, 6366507.199144704 ] }, "min_100m": { "gradient_pct": 2.1410033397071544, "start_distance_m": 0.0, "end_distance_m": 100.0, "midpoint_distance_m": 50.0, "start_elevation_m": 91.79516438293436, "end_elevation_m": 93.93616772264151, "start_xy": [ 517856.485, 6366547.175 ], "end_xy": [ 517877.73700983037, 6366495.780732308 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 35.712716547082834, "start_distance_m": 1679.0, "end_distance_m": 1681.0, "midpoint_distance_m": 1680.0, "start_elevation_m": 154.11260726255946, "end_elevation_m": 154.82686159350112, "start_xy": [ 517900.0500477499, 6365303.249475973 ], "end_xy": [ 517898.5093978869, 6365301.974172872 ] }, "max_3m": { "gradient_pct": 33.31015884718246, "start_distance_m": 1678.0, "end_distance_m": 1681.0, "midpoint_distance_m": 1679.5, "start_elevation_m": 153.82755682808565, "end_elevation_m": 154.82686159350112, "start_xy": [ 517900.8203726814, 6365303.887127523 ], "end_xy": [ 517898.5093978869, 6365301.974172872 ] } }, "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": 0.295, "obstruction_max_height_m": 29.07, "flagged_windows_m": [ 2, 3, 5, 10, 20, 25, 50, 100 ] }, "review": [], "extent": [] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "16bcc1553fe58b280e0c4a66a3ab0980530490a6", "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-so5", "road_pbf": "block-batch-fr-so5.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": "sha256:18f786cf9fa98070" }, "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_E517-N6365_0m5@21LHD2HO-2025-02-20.tif", "data/cache/fr/ign-lidarhd_dtm_E517-N6366_0m5@21LHD2HO-2025-02-20.tif" ], "calculated_at": "2026-09-27T05:06:53+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-so5.osm.pbf", "osm_snapshot": "", "run_id": "fr-so5", "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": [ "E517-N6365", "E517-N6366" ], "elevation_blocks": [ "21LHD2HO@2025-02-20" ], "ign_dalles": [ "LHD_FXX_0517_6366_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0517_6367_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD2HO" ], "ign_editions": [ "2025-02-20" ], "ign_dsm_edition": { "LHD_FXX_0517_6366_MNT_O_0M50_LAMB93_IGN69": "2025-02-20", "LHD_FXX_0517_6367_MNT_O_0M50_LAMB93_IGN69": "2025-02-20" }, "climb_origin": "discovered", "seam_filled_samples": { "count": 0, "distances_m": [] }, "seam_filled_in_maximum": false, "structure_own_ways": "none \u2014 the route carried no way list and no mapped way runs along it; own decks unmasked", "carriageway": { "stations": 93, "stations_resolved": 93, "width_median_m": 8.25, "width_p10_m": 4.5, "width_min_m": 2.5, "width_max_m": 12.0, "bounded_share": 0.172, "unbounded_share": 0.828, "confidence_median": 0.0, "width_median_bounded_m": 7.62, "window_m": [ 1755.0, 1780.0 ], "width_at_max25_m": 3.62, "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": 93, "stations_resolved": 93, "width_median_m": 7.0, "width_p10_m": 0.55, "width_min_m": 0.0, "width_max_m": 12.0, "bounded_share": 0.645, "unbounded_share": 0.355, "confidence_median": 1.0, "width_median_bounded_m": 3.25, "window_m": [ 1755.0, 1780.0 ], "width_at_max25_m": 4.62, "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": "Pujols", "county": "Lot-et-Garonne", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }