{ "ocl_version": "0.1.0", "name": "Discovered lane (45.1272, 4.0239)", "slug": "discovered-lane-45-1272-4-0239", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 41.514252368909865, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 836.0, "end_distance_m": 838.0, "start_elevation_m": 788.0404354595481, "end_elevation_m": 788.8707205069263, "min_gradient_pct": -12.371357964292429 }, { "window_m": 3.0, "max_gradient_pct": 30.984612512202148, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 835.0, "end_distance_m": 838.0, "start_elevation_m": 787.9411821315603, "end_elevation_m": 788.8707205069263, "min_gradient_pct": -11.899888151553265 }, { "window_m": 5.0, "max_gradient_pct": 23.718603651482226, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 734.0, "end_distance_m": 739.0, "start_elevation_m": 772.6602137796675, "end_elevation_m": 773.8461439622416, "min_gradient_pct": -11.226493292017494 }, { "window_m": 10.0, "max_gradient_pct": 22.78416751427926, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 733.0, "end_distance_m": 743.0, "start_elevation_m": 772.51491599748, "end_elevation_m": 774.7933327489079, "min_gradient_pct": -10.219830493140307 }, { "window_m": 20.0, "max_gradient_pct": 22.210114389243927, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 735.0, "end_distance_m": 755.0, "start_elevation_m": 772.8601886460026, "end_elevation_m": 777.3022115238514, "min_gradient_pct": -5.473343291361061 }, { "window_m": 25.0, "max_gradient_pct": 22.102874896913818, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 735.0, "end_distance_m": 760.0, "start_elevation_m": 772.8601886460026, "end_elevation_m": 778.385907370231, "min_gradient_pct": -3.9916197484180884 }, { "window_m": 50.0, "max_gradient_pct": 20.171526794442798, "diagnostic": false, "flags": [], "start_distance_m": 598.0, "end_distance_m": 648.0, "start_elevation_m": 748.527432725574, "end_elevation_m": 758.6131961227954, "min_gradient_pct": -1.0597363655922436 }, { "window_m": 100.0, "max_gradient_pct": 18.953244788585494, "diagnostic": false, "flags": [], "start_distance_m": 572.0, "end_distance_m": 672.0, "start_elevation_m": 744.1315424505837, "end_elevation_m": 763.0847872391691, "min_gradient_pct": 0.9548704670255574 } ], "shape": { "ascent_concentration": 0.424, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 463.0, "shape_class": "sustained" }, "length_m": 2108.619280801848, "start_elevation_m": 695.0500984423697, "end_elevation_m": 890.7938388671864, "endpoint_gain_m": 195.74374042481668, "overall_gradient_pct": 9.283029051616225, "accumulated_ascent_m": 197.75153998470807, "window_maxima": { "max_5m": { "gradient_pct": 23.718603651482226, "start_distance_m": 734.0, "end_distance_m": 739.0, "midpoint_distance_m": 736.5, "start_elevation_m": 772.6602137796675, "end_elevation_m": 773.8461439622416, "start_xy": [ 780456.9982693089, 6447927.66483629 ], "end_xy": [ 780461.9760731541, 6447927.199026707 ] }, "max_10m": { "gradient_pct": 22.78416751427926, "start_distance_m": 733.0, "end_distance_m": 743.0, "midpoint_distance_m": 738.0, "start_elevation_m": 772.51491599748, "end_elevation_m": 774.7933327489079, "start_xy": [ 780456.0018376112, 6447927.749239323 ], "end_xy": [ 780465.9502400032, 6447926.74515684 ] }, "max_20m": { "gradient_pct": 22.210114389243927, "start_distance_m": 735.0, "end_distance_m": 755.0, "midpoint_distance_m": 745.0, "start_elevation_m": 772.8601886460026, "end_elevation_m": 777.3022115238514, "start_xy": [ 780457.9947010066, 6447927.580433258 ], "end_xy": [ 780477.8197872007, 6447926.791772871 ] }, "max_25m": { "gradient_pct": 22.102874896913818, "start_distance_m": 735.0, "end_distance_m": 760.0, "midpoint_distance_m": 747.5, "start_elevation_m": 772.8601886460026, "end_elevation_m": 778.385907370231, "start_xy": [ 780457.9947010066, 6447927.580433258 ], "end_xy": [ 780482.1685371321, 6447928.69563192 ] }, "max_50m": { "gradient_pct": 20.171526794442798, "start_distance_m": 598.0, "end_distance_m": 648.0, "midpoint_distance_m": 623.0, "start_elevation_m": 748.527432725574, "end_elevation_m": 758.6131961227954, "start_xy": [ 780322.1012984411, 6447942.302571761 ], "end_xy": [ 780371.3508209497, 6447934.063441735 ] }, "max_100m": { "gradient_pct": 18.953244788585494, "start_distance_m": 572.0, "end_distance_m": 672.0, "midpoint_distance_m": 622.0, "start_elevation_m": 744.1315424505837, "end_elevation_m": 763.0847872391691, "start_xy": [ 780296.1780728447, 6447944.059146106 ], "end_xy": [ 780395.1386189848, 6447930.87900071 ] } }, "window_minima": { "min_5m": { "gradient_pct": -11.226493292017494, "start_distance_m": 2102.0, "end_distance_m": 2107.0, "midpoint_distance_m": 2104.5, "start_elevation_m": 891.534494599316, "end_elevation_m": 890.9731699347151, "start_xy": [ 781423.5694775892, 6447742.848847673 ], "end_xy": [ 781423.7429185306, 6447737.865327489 ] }, "min_10m": { "gradient_pct": -10.219830493140307, "start_distance_m": 2098.0, "end_distance_m": 2108.0, "midpoint_distance_m": 2103.0, "start_elevation_m": 891.893385705785, "end_elevation_m": 890.871402656471, "start_xy": [ 781424.042411596, 6447746.820790954 ], "end_xy": [ 781423.8127529097, 6447736.867768889 ] }, "min_20m": { "gradient_pct": -5.473343291361061, "start_distance_m": 2088.0, "end_distance_m": 2108.0, "midpoint_distance_m": 2098.0, "start_elevation_m": 891.9660713147432, "end_elevation_m": 890.871402656471, "start_xy": [ 781423.5883461648, 6447756.778988559 ], "end_xy": [ 781423.8127529097, 6447736.867768889 ] }, "min_25m": { "gradient_pct": -3.9916197484180884, "start_distance_m": 2083.0, "end_distance_m": 2108.0, "midpoint_distance_m": 2095.5, "start_elevation_m": 891.8693075935755, "end_elevation_m": 890.871402656471, "start_xy": [ 781422.9256615328, 6447761.73485934 ], "end_xy": [ 781423.8127529097, 6447736.867768889 ] }, "min_50m": { "gradient_pct": -1.0597363655922436, "start_distance_m": 2058.0, "end_distance_m": 2108.0, "midpoint_distance_m": 2083.0, "start_elevation_m": 891.4012708392671, "end_elevation_m": 890.871402656471, "start_xy": [ 781414.507522855, 6447784.861453762 ], "end_xy": [ 781423.8127529097, 6447736.867768889 ] }, "min_100m": { "gradient_pct": 0.9548704670255574, "start_distance_m": 2008.0, "end_distance_m": 2108.0, "midpoint_distance_m": 2058.0, "start_elevation_m": 889.9165321894454, "end_elevation_m": 890.871402656471, "start_xy": [ 781384.5997746701, 6447824.8072906155 ], "end_xy": [ 781423.8127529097, 6447736.867768889 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 41.514252368909865, "start_distance_m": 836.0, "end_distance_m": 838.0, "midpoint_distance_m": 837.0, "start_elevation_m": 788.0404354595481, "end_elevation_m": 788.8707205069263, "start_xy": [ 780435.4997960707, 6447980.561439364 ], "end_xy": [ 780434.2567574538, 6447982.128237053 ] }, "max_3m": { "gradient_pct": 30.984612512202148, "start_distance_m": 835.0, "end_distance_m": 838.0, "midpoint_distance_m": 836.5, "start_elevation_m": 787.9411821315603, "end_elevation_m": 788.8707205069263, "start_xy": [ 780436.1213153792, 6447979.77804052 ], "end_xy": [ 780434.2567574538, 6447982.128237053 ] } }, "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": 0.164, "obstruction_max_height_m": 19.44, "flagged_windows_m": [ 2, 3, 5, 10, 20, 25 ] }, "review": [], "extent": [ "may_start_earlier", "descends_at_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-mc6", "road_pbf": "block-batch-fr-mc6.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_E779-N6447_0m5@21LHD4MM-2025-03-12.tif", "data/cache/fr/ign-lidarhd_dtm_E780-N6447_0m5@21LHD4MM-2025-03-12.tif", "data/cache/fr/ign-lidarhd_dtm_E780-N6448_0m5@21LHD4MM-2025-03-12.tif", "data/cache/fr/ign-lidarhd_dtm_E781-N6447_0m5@21LHD4MM-2025-03-12.tif", "data/cache/fr/ign-lidarhd_dtm_E781-N6448_0m5@21LHD4MM-2025-03-12.tif" ], "calculated_at": "2026-09-22T18:29:44+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc6.osm.pbf", "osm_snapshot": "", "run_id": "fr-mc6", "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": [ "E779-N6447", "E780-N6447", "E780-N6448", "E781-N6447", "E781-N6448" ], "elevation_blocks": [ "21LHD4MM@2025-03-12" ], "ign_dalles": [ "LHD_FXX_0779_6448_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0780_6448_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0780_6449_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0781_6448_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0781_6449_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD4MM" ], "ign_editions": [ "2025-03-12" ], "ign_dsm_edition": { "LHD_FXX_0779_6448_MNT_O_0M50_LAMB93_IGN69": "2025-03-12", "LHD_FXX_0780_6448_MNT_O_0M50_LAMB93_IGN69": "2025-03-12", "LHD_FXX_0780_6449_MNT_O_0M50_LAMB93_IGN69": "2025-03-12", "LHD_FXX_0781_6448_MNT_O_0M50_LAMB93_IGN69": "2025-03-12", "LHD_FXX_0781_6449_MNT_O_0M50_LAMB93_IGN69": "2025-03-12" }, "climb_origin": "discovered", "structure_own_ways": 2, "carriageway": { "stations": 90, "stations_resolved": 90, "width_median_m": 5.5, "width_p10_m": 3.25, "width_min_m": 1.25, "width_max_m": 12.0, "bounded_share": 0.144, "unbounded_share": 0.856, "confidence_median": 0.0, "width_median_bounded_m": 5.75, "window_m": [ 735.0, 760.0 ], "width_at_max25_m": 4.5, "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": 90, "stations_resolved": 90, "width_median_m": 5.88, "width_p10_m": 1.0, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.678, "unbounded_share": 0.322, "confidence_median": 1.0, "width_median_bounded_m": 3.25, "window_m": [ 735.0, 760.0 ], "width_at_max25_m": 1.75, "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": "Rosi\u00e8res", "county": "Haute-Loire", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }