{ "ocl_version": "0.1.0", "name": "Chemin des Gypi\u00e8res", "slug": "chemin-des-gypieres", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 25.582500144258802, "diagnostic": true, "flags": [ "structure_excluded", "structure_excluded_min", "texture_excluded", "canopy_or_structure" ], "start_distance_m": 1517.0, "end_distance_m": 1519.0, "start_elevation_m": 242.8880173391828, "end_elevation_m": 243.39966734206797, "min_gradient_pct": -30.984805840613205, "suppressed_max_gradient_pct": 75.6295875603314, "suppressed_location_m": [ 450.0, 452.0 ], "suppressed_min_gradient_pct": -73.58352218550834, "suppressed_min_location_m": [ 448.0, 450.0 ] }, { "window_m": 3.0, "max_gradient_pct": 25.186744543468837, "diagnostic": true, "flags": [ "structure_excluded", "structure_excluded_min", "texture_excluded", "canopy_or_structure" ], "start_distance_m": 1517.0, "end_distance_m": 1520.0, "start_elevation_m": 242.8880173391828, "end_elevation_m": 243.64361967548686, "min_gradient_pct": -27.245490595769677, "suppressed_max_gradient_pct": 61.09101501209674, "suppressed_location_m": [ 450.0, 453.0 ], "suppressed_min_gradient_pct": -33.53520950370429, "suppressed_min_location_m": [ 447.0, 450.0 ] }, { "window_m": 5.0, "max_gradient_pct": 24.46546916172565, "diagnostic": false, "flags": [ "structure_excluded", "structure_excluded_min", "texture_excluded", "canopy_or_structure" ], "start_distance_m": 1515.0, "end_distance_m": 1520.0, "start_elevation_m": 242.42034621740058, "end_elevation_m": 243.64361967548686, "min_gradient_pct": -17.537158747100534, "suppressed_max_gradient_pct": 42.28008242323256, "suppressed_location_m": [ 450.0, 455.0 ], "suppressed_min_gradient_pct": -21.735496027164345, "suppressed_min_location_m": [ 445.0, 450.0 ] }, { "window_m": 10.0, "max_gradient_pct": 23.665302260863825, "diagnostic": false, "flags": [ "structure_excluded", "canopy_or_structure" ], "start_distance_m": 1512.0, "end_distance_m": 1522.0, "start_elevation_m": 241.73641679251864, "end_elevation_m": 244.10294701860502, "min_gradient_pct": -13.035870511210703, "suppressed_max_gradient_pct": 25.628376239429542, "suppressed_location_m": [ 450.0, 460.0 ] }, { "window_m": 20.0, "max_gradient_pct": 22.76532215430791, "diagnostic": false, "flags": [], "start_distance_m": 1356.0, "end_distance_m": 1376.0, "start_elevation_m": 217.92737463229008, "end_elevation_m": 222.48043906315166, "min_gradient_pct": -7.766501278688054 }, { "window_m": 25.0, "max_gradient_pct": 22.26362447914744, "diagnostic": false, "flags": [], "start_distance_m": 1351.0, "end_distance_m": 1376.0, "start_elevation_m": 216.9145329433648, "end_elevation_m": 222.48043906315166, "min_gradient_pct": -6.894014400128299 }, { "window_m": 50.0, "max_gradient_pct": 19.28024242478034, "diagnostic": false, "flags": [ "structure_excluded" ], "start_distance_m": 1336.0, "end_distance_m": 1386.0, "start_elevation_m": 214.52968890678545, "end_elevation_m": 224.16981011917562, "min_gradient_pct": -4.8632296914601625, "suppressed_max_gradient_pct": 19.642120605061223, "suppressed_location_m": [ 1342.0, 1392.0 ] }, { "window_m": 100.0, "max_gradient_pct": 17.212461421361297, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1477.0, "end_distance_m": 1577.0, "start_elevation_m": 235.65716721366368, "end_elevation_m": 252.86962863502498, "min_gradient_pct": -2.955434886548346 } ], "shape": { "ascent_concentration": 0.433, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 208.0, "shape_class": "sustained" }, "length_m": 2382.764176965483, "start_elevation_m": 153.47539801636344, "end_elevation_m": 307.8221335907034, "endpoint_gain_m": 154.34673557433996, "overall_gradient_pct": 6.477633710731075, "accumulated_ascent_m": 167.96562564226244, "window_maxima": { "max_5m": { "gradient_pct": 24.46546916172565, "start_distance_m": 1515.0, "end_distance_m": 1520.0, "midpoint_distance_m": 1517.5, "start_elevation_m": 242.42034621740058, "end_elevation_m": 243.64361967548686, "start_xy": [ 779773.3603802182, 6332046.548158667 ], "end_xy": [ 779770.8752896076, 6332050.88685947 ] }, "max_10m": { "gradient_pct": 23.665302260863825, "start_distance_m": 1512.0, "end_distance_m": 1522.0, "midpoint_distance_m": 1517.0, "start_elevation_m": 241.73641679251864, "end_elevation_m": 244.10294701860502, "start_xy": [ 779774.8514345847, 6332043.944938186 ], "end_xy": [ 779769.8812533633, 6332052.622339791 ] }, "max_20m": { "gradient_pct": 22.76532215430791, "start_distance_m": 1356.0, "end_distance_m": 1376.0, "midpoint_distance_m": 1366.0, "start_elevation_m": 217.92737463229008, "end_elevation_m": 222.48043906315166, "start_xy": [ 779808.9642320615, 6331893.911580329 ], "end_xy": [ 779801.6576516802, 6331912.529149535 ] }, "max_25m": { "gradient_pct": 22.26362447914744, "start_distance_m": 1351.0, "end_distance_m": 1376.0, "midpoint_distance_m": 1363.5, "start_elevation_m": 216.9145329433648, "end_elevation_m": 222.48043906315166, "start_xy": [ 779810.2032678536, 6331889.069001328 ], "end_xy": [ 779801.6576516802, 6331912.529149535 ] }, "max_50m": { "gradient_pct": 19.28024242478034, "start_distance_m": 1336.0, "end_distance_m": 1386.0, "midpoint_distance_m": 1361.0, "start_elevation_m": 214.52968890678545, "end_elevation_m": 224.16981011917562, "start_xy": [ 779813.8545344316, 6331874.5201782705 ], "end_xy": [ 779800.0375680797, 6331922.390146806 ] }, "max_100m": { "gradient_pct": 17.212461421361297, "start_distance_m": 1477.0, "end_distance_m": 1577.0, "midpoint_distance_m": 1527.0, "start_elevation_m": 235.65716721366368, "end_elevation_m": 252.86962863502498, "start_xy": [ 779786.8946789198, 6332011.600932934 ], "end_xy": [ 779760.9515995372, 6332104.1709828 ] } }, "window_minima": { "min_5m": { "gradient_pct": -17.537158747100534, "start_distance_m": 1105.0, "end_distance_m": 1110.0, "midpoint_distance_m": 1107.5, "start_elevation_m": 201.8084990813907, "end_elevation_m": 200.93164114403567, "start_xy": [ 779773.2516244553, 6331656.240172861 ], "end_xy": [ 779774.3574627925, 6331661.116351854 ] }, "min_10m": { "gradient_pct": -13.035870511210703, "start_distance_m": 1099.0, "end_distance_m": 1109.0, "midpoint_distance_m": 1104.0, "start_elevation_m": 202.23871676703374, "end_elevation_m": 200.93512971591267, "start_xy": [ 779771.9246184507, 6331650.38875807 ], "end_xy": [ 779774.1362951251, 6331660.141116056 ] }, "min_20m": { "gradient_pct": -7.766501278688054, "start_distance_m": 1842.0, "end_distance_m": 1862.0, "midpoint_distance_m": 1852.0, "start_elevation_m": 271.4736682556606, "end_elevation_m": 269.920367999923, "start_xy": [ 779861.7193917411, 6332262.090073414 ], "end_xy": [ 779875.4951373207, 6332276.466758161 ] }, "min_25m": { "gradient_pct": -6.894014400128299, "start_distance_m": 1840.0, "end_distance_m": 1865.0, "midpoint_distance_m": 1852.5, "start_elevation_m": 271.5423383616375, "end_elevation_m": 269.81883476160544, "start_xy": [ 779860.30608805, 6332260.674950565 ], "end_xy": [ 779876.4986280195, 6332279.293948713 ] }, "min_50m": { "gradient_pct": -4.8632296914601625, "start_distance_m": 1099.0, "end_distance_m": 1149.0, "midpoint_distance_m": 1124.0, "start_elevation_m": 202.23871676703374, "end_elevation_m": 199.80710192130365, "start_xy": [ 779771.9246184507, 6331650.38875807 ], "end_xy": [ 779792.1379684788, 6331695.338421513 ] }, "min_100m": { "gradient_pct": -2.955434886548346, "start_distance_m": 1046.0, "end_distance_m": 1146.0, "midpoint_distance_m": 1096.0, "start_elevation_m": 202.84013214291068, "end_elevation_m": 199.88469725636233, "start_xy": [ 779760.3367075778, 6331599.120995429 ], "end_xy": [ 779790.5288947824, 6331692.8064495865 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 25.582500144258802, "start_distance_m": 1517.0, "end_distance_m": 1519.0, "midpoint_distance_m": 1518.0, "start_elevation_m": 242.8880173391828, "end_elevation_m": 243.39966734206797, "start_xy": [ 779772.366343974, 6332048.283638989 ], "end_xy": [ 779771.3723077297, 6332050.019119309 ] }, "max_3m": { "gradient_pct": 25.186744543468837, "start_distance_m": 1517.0, "end_distance_m": 1520.0, "midpoint_distance_m": 1518.5, "start_elevation_m": 242.8880173391828, "end_elevation_m": 243.64361967548686, "start_xy": [ 779772.366343974, 6332048.283638989 ], "end_xy": [ 779770.8752896076, 6332050.88685947 ] } }, "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": 0.032, "windows_resited": [ 2.0, 3.0, 5.0, 10.0, 50.0 ], "windows_unresolved": [], "minima_resited": [ 2.0, 3.0, 5.0 ], "minima_unresolved": [] }, "no_bench_suppression": { "masked_fraction": 0.045, "windows_resited": [], "windows_unresolved": [], "minima_resited": [], "minima_unresolved": [] }, "texture_suppression": { "masked_fraction": 0.05, "windows_resited": [ 2.0, 3.0, 5.0 ], "windows_unresolved": [], "minima_resited": [], "minima_unresolved": [] }, "texture_windows": { "rounds": 1, "windows_masked": [ { "window_m": 5.0, "start_m": 2233.0, "end_m": 2238.0, "raw_pct": 35.09, "reason": "hump+short-step" } ], "advisory": [], "unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.326, "obstruction_max_height_m": 23.3, "flagged_windows_m": [ 2, 3, 5, 10, 100 ] }, "excluded_ranges_m": [ [ 0.0, 20.0 ], [ 169.0, 209.0 ], [ 446.0, 453.0 ], [ 690.0, 720.0 ], [ 1387.0, 1393.0 ], [ 2231.0, 2240.0 ] ], "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-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-N6330_0m5@21LHD4MP-2024-12-13.tif", "data/cache/fr/ign-lidarhd_dtm_E779-N6331_0m5@21LHD4MP-2024-12-13.tif", "data/cache/fr/ign-lidarhd_dtm_E779-N6332_0m5@21LHD4MP-2024-12-13.tif", "data/cache/fr/ign-lidarhd_dtm_E780-N6331_0m5@21LHD4MP-2024-12-13.tif", "data/cache/fr/ign-lidarhd_dtm_E780-N6332_0m5@21LHD4MP-2024-12-13.tif" ], "calculated_at": "2026-09-22T17:35:42+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-N6330", "E779-N6331", "E779-N6332", "E780-N6331", "E780-N6332" ], "elevation_blocks": [ "21LHD4MP@2024-12-13" ], "ign_dalles": [ "LHD_FXX_0779_6331_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0779_6332_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0779_6333_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0780_6332_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0780_6333_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD4MP" ], "ign_editions": [ "2024-12-13" ], "ign_dsm_edition": { "LHD_FXX_0779_6331_MNT_O_0M50_LAMB93_IGN69": "2024-12-13", "LHD_FXX_0779_6332_MNT_O_0M50_LAMB93_IGN69": "2024-12-13", "LHD_FXX_0779_6333_MNT_O_0M50_LAMB93_IGN69": "2024-12-13", "LHD_FXX_0780_6332_MNT_O_0M50_LAMB93_IGN69": "2024-12-13", "LHD_FXX_0780_6333_MNT_O_0M50_LAMB93_IGN69": "2024-12-13" }, "climb_origin": "discovered", "structure_own_ways": 5, "structure_mask_ranges_m": [ [ 0.0, 15.1 ], [ 174.7, 204.7 ] ], "carriageway": { "stations": 102, "stations_resolved": 102, "width_median_m": 4.25, "width_p10_m": 2.75, "width_min_m": 1.0, "width_max_m": 9.0, "bounded_share": 0.618, "unbounded_share": 0.382, "confidence_median": 0.646, "width_median_bounded_m": 4.0, "window_m": [ 1351.0, 1376.0 ], "width_at_max25_m": 5.0, "window_stations": 7, "single_track": true, "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": 102, "stations_resolved": 102, "width_median_m": 3.0, "width_p10_m": 0.78, "width_min_m": 0.5, "width_max_m": 9.75, "bounded_share": 0.971, "unbounded_share": 0.029, "confidence_median": 1.0, "width_median_bounded_m": 3.0, "window_m": [ 1351.0, 1376.0 ], "width_at_max25_m": 6.5, "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": "G\u00e9n\u00e9rargues", "county": "Gard", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }