{ "ocl_version": "0.1.0", "name": "Chemin de la Vierge", "slug": "chemin-de-la-vierge-2", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 31.4177826271667, "diagnostic": true, "flags": [], "start_distance_m": 562.0, "end_distance_m": 564.0, "start_elevation_m": 101.73925632273709, "end_elevation_m": 102.36761197528043, "min_gradient_pct": -6.044307436813057 }, { "window_m": 3.0, "max_gradient_pct": 30.163750607519074, "diagnostic": true, "flags": [], "start_distance_m": 562.0, "end_distance_m": 565.0, "start_elevation_m": 101.73925632273709, "end_elevation_m": 102.64416884096266, "min_gradient_pct": -5.101842888810874 }, { "window_m": 5.0, "max_gradient_pct": 26.80115273672385, "diagnostic": false, "flags": [], "start_distance_m": 561.0, "end_distance_m": 566.0, "start_elevation_m": 101.50819806864767, "end_elevation_m": 102.84825570548387, "min_gradient_pct": -2.56048616147325 }, { "window_m": 10.0, "max_gradient_pct": 24.818174389216665, "diagnostic": false, "flags": [], "start_distance_m": 555.0, "end_distance_m": 565.0, "start_elevation_m": 100.162351402041, "end_elevation_m": 102.64416884096266, "min_gradient_pct": -1.28297620289203 }, { "window_m": 20.0, "max_gradient_pct": 22.971342354936013, "diagnostic": false, "flags": [], "start_distance_m": 546.0, "end_distance_m": 566.0, "start_elevation_m": 98.25398723449666, "end_elevation_m": 102.84825570548387, "min_gradient_pct": -0.34005055167995124 }, { "window_m": 25.0, "max_gradient_pct": 22.050489726721935, "diagnostic": false, "flags": [], "start_distance_m": 541.0, "end_distance_m": 566.0, "start_elevation_m": 97.33563327380338, "end_elevation_m": 102.84825570548387, "min_gradient_pct": 0.2806008341191273 }, { "window_m": 50.0, "max_gradient_pct": 19.08575524363951, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 528.0, "end_distance_m": 578.0, "start_elevation_m": 95.272011875953, "end_elevation_m": 104.81488949777275, "min_gradient_pct": 2.8377534110244653 }, { "window_m": 100.0, "max_gradient_pct": 13.510293535900159, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 478.0, "end_distance_m": 578.0, "start_elevation_m": 91.3045959618726, "end_elevation_m": 104.81488949777275, "min_gradient_pct": 4.462661485365956 } ], "shape": { "ascent_concentration": 0.337, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 124.0, "shape_class": "sustained" }, "length_m": 687.0379391391621, "start_elevation_m": 51.23728536816534, "end_elevation_m": 109.95831733681104, "endpoint_gain_m": 58.7210319686457, "overall_gradient_pct": 8.546985344393264, "accumulated_ascent_m": 59.110179779186474, "window_maxima": { "max_5m": { "gradient_pct": 26.80115273672385, "start_distance_m": 561.0, "end_distance_m": 566.0, "midpoint_distance_m": 563.5, "start_elevation_m": 101.50819806864767, "end_elevation_m": 102.84825570548387, "start_xy": [ 736666.6175605862, 6274054.197415151 ], "end_xy": [ 736663.1914456827, 6274050.5558910845 ] }, "max_10m": { "gradient_pct": 24.818174389216665, "start_distance_m": 555.0, "end_distance_m": 565.0, "midpoint_distance_m": 560.0, "start_elevation_m": 100.162351402041, "end_elevation_m": 102.64416884096266, "start_xy": [ 736670.7082876775, 6274058.586714852 ], "end_xy": [ 736663.8830626118, 6274051.278155595 ] }, "max_20m": { "gradient_pct": 22.971342354936013, "start_distance_m": 546.0, "end_distance_m": 566.0, "midpoint_distance_m": 556.0, "start_elevation_m": 98.25398723449666, "end_elevation_m": 102.84825570548387, "start_xy": [ 736676.9889212996, 6274065.010545449 ], "end_xy": [ 736663.1914456827, 6274050.5558910845 ] }, "max_25m": { "gradient_pct": 22.050489726721935, "start_distance_m": 541.0, "end_distance_m": 566.0, "midpoint_distance_m": 553.5, "start_elevation_m": 97.33563327380338, "end_elevation_m": 102.84825570548387, "start_xy": [ 736680.9752577486, 6274068.028677606 ], "end_xy": [ 736663.1914456827, 6274050.5558910845 ] }, "max_50m": { "gradient_pct": 19.08575524363951, "start_distance_m": 528.0, "end_distance_m": 578.0, "midpoint_distance_m": 553.0, "start_elevation_m": 95.272011875953, "end_elevation_m": 104.81488949777275, "start_xy": [ 736691.3397325161, 6274075.875821213 ], "end_xy": [ 736654.8920425333, 6274041.888716957 ] }, "max_100m": { "gradient_pct": 13.510293535900159, "start_distance_m": 478.0, "end_distance_m": 578.0, "midpoint_distance_m": 528.0, "start_elevation_m": 91.3045959618726, "end_elevation_m": 104.81488949777275, "start_xy": [ 736727.369341187, 6274110.193447342 ], "end_xy": [ 736654.8920425333, 6274041.888716957 ] } }, "window_minima": { "min_5m": { "gradient_pct": -2.56048616147325, "start_distance_m": 614.0, "end_distance_m": 619.0, "midpoint_distance_m": 616.5, "start_elevation_m": 106.766945146404, "end_elevation_m": 106.63892083833034, "start_xy": [ 736644.114744525, 6274010.2781658005 ], "end_xy": [ 736644.9399970176, 6274005.346740232 ] }, "min_10m": { "gradient_pct": -1.28297620289203, "start_distance_m": 347.0, "end_distance_m": 357.0, "midpoint_distance_m": 352.0, "start_elevation_m": 84.09406650097978, "end_elevation_m": 83.96576888069058, "start_xy": [ 736735.3111698317, 6274237.705494004 ], "end_xy": [ 736733.054001819, 6274228.598115692 ] }, "min_20m": { "gradient_pct": -0.34005055167995124, "start_distance_m": 340.0, "end_distance_m": 360.0, "midpoint_distance_m": 350.0, "start_elevation_m": 84.04878853123557, "end_elevation_m": 83.98077842089958, "start_xy": [ 736740.065862451, 6274242.7952434 ], "end_xy": [ 736733.1351334668, 6274225.59921295 ] }, "min_25m": { "gradient_pct": 0.2806008341191273, "start_distance_m": 340.0, "end_distance_m": 365.0, "midpoint_distance_m": 352.5, "start_elevation_m": 84.04878853123557, "end_elevation_m": 84.11893873976535, "start_xy": [ 736740.065862451, 6274242.7952434 ], "end_xy": [ 736733.1997642416, 6274220.600307353 ] }, "min_50m": { "gradient_pct": 2.8377534110244653, "start_distance_m": 334.0, "end_distance_m": 384.0, "midpoint_distance_m": 359.0, "start_elevation_m": 83.7253170527753, "end_elevation_m": 85.14419375828753, "start_xy": [ 736744.977750768, 6274246.241016631 ], "end_xy": [ 736733.0811829311, 6274201.600677397 ] }, "min_100m": { "gradient_pct": 4.462661485365956, "start_distance_m": 334.0, "end_distance_m": 434.0, "midpoint_distance_m": 384.0, "start_elevation_m": 83.7253170527753, "end_elevation_m": 88.18797853814125, "start_xy": [ 736744.977750768, 6274246.241016631 ], "end_xy": [ 736732.0068089186, 6274151.635760727 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 31.4177826271667, "start_distance_m": 562.0, "end_distance_m": 564.0, "midpoint_distance_m": 563.0, "start_elevation_m": 101.73925632273709, "end_elevation_m": 102.36761197528043, "start_xy": [ 736665.9357727376, 6274053.4658652 ], "end_xy": [ 736664.5721970405, 6274052.0027653 ] }, "max_3m": { "gradient_pct": 30.163750607519074, "start_distance_m": 562.0, "end_distance_m": 565.0, "midpoint_distance_m": 563.5, "start_elevation_m": 101.73925632273709, "end_elevation_m": 102.64416884096266, "start_xy": [ 736665.9357727376, 6274053.4658652 ], "end_xy": [ 736663.8830626118, 6274051.278155595 ] } }, "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": 0.16, "obstruction_max_height_m": 13.08, "flagged_windows_m": [ 50, 100 ] }, "review": [], "extent": [ "may_start_earlier" ] }, "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-mc5", "road_pbf": "block-batch-fr-mc5.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_E736-N6273_0m5@21LHD4MQ-2024-12-19.tif", "data/cache/fr/ign-lidarhd_dtm_E736-N6274_0m5@21LHD4MQ-2024-12-19.tif", "data/cache/fr/ign-lidarhd_dtm_E737-N6274_0m5@21LHD4MQ-2024-12-19.tif" ], "calculated_at": "2026-09-22T15:28:40+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc5.osm.pbf", "osm_snapshot": "", "run_id": "fr-mc5", "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": [ "E736-N6273", "E736-N6274", "E737-N6274" ], "elevation_blocks": [ "21LHD4MQ@2024-12-19" ], "ign_dalles": [ "LHD_FXX_0736_6274_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0736_6275_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0737_6275_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD4MQ" ], "ign_editions": [ "2024-12-19" ], "ign_dsm_edition": { "LHD_FXX_0736_6274_MNT_O_0M50_LAMB93_IGN69": "2024-12-19", "LHD_FXX_0736_6275_MNT_O_0M50_LAMB93_IGN69": "2024-12-19", "LHD_FXX_0737_6275_MNT_O_0M50_LAMB93_IGN69": "2024-12-19" }, "climb_origin": "discovered", "structure_own_ways": 1, "carriageway": { "stations": 34, "stations_resolved": 34, "width_median_m": 4.0, "width_p10_m": 2.75, "width_min_m": 2.25, "width_max_m": 10.0, "bounded_share": 0.324, "unbounded_share": 0.676, "confidence_median": 0.0, "width_median_bounded_m": 3.75, "window_m": [ 541.0, 566.0 ], "width_at_max25_m": 4.5, "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": 34, "stations_resolved": 34, "width_median_m": 4.62, "width_p10_m": 1.15, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.824, "unbounded_share": 0.176, "confidence_median": 1.0, "width_median_bounded_m": 4.12, "window_m": [ 541.0, 566.0 ], "width_at_max25_m": 3.0, "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": "Aspiran", "county": "H\u00e9rault", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }