{ "ocl_version": "0.1.0", "name": "Chemin des Bruy\u00e8res", "slug": "chemin-des-bruyeres-5", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 22.801555903754434, "diagnostic": true, "flags": [], "start_distance_m": 1495.0, "end_distance_m": 1497.0, "start_elevation_m": 357.23538944093474, "end_elevation_m": 357.6914205590098, "min_gradient_pct": -5.518320575768598 }, { "window_m": 3.0, "max_gradient_pct": 21.371009052482275, "diagnostic": true, "flags": [], "start_distance_m": 1410.0, "end_distance_m": 1413.0, "start_elevation_m": 344.00928132008124, "end_elevation_m": 344.6504115916557, "min_gradient_pct": -4.867306353747836 }, { "window_m": 5.0, "max_gradient_pct": 21.294478882033445, "diagnostic": false, "flags": [], "start_distance_m": 1404.0, "end_distance_m": 1409.0, "start_elevation_m": 342.7378376822429, "end_elevation_m": 343.8025616263446, "min_gradient_pct": -4.488991862853027 }, { "window_m": 10.0, "max_gradient_pct": 21.063435681691658, "diagnostic": false, "flags": [ "structure_excluded_min" ], "start_distance_m": 1404.0, "end_distance_m": 1414.0, "start_elevation_m": 342.7378376822429, "end_elevation_m": 344.8441812504121, "min_gradient_pct": -0.0858971444671397, "suppressed_min_gradient_pct": -0.5996705441009453, "suppressed_min_location_m": [ 0.0, 10.0 ] }, { "window_m": 20.0, "max_gradient_pct": 20.51730242067805, "diagnostic": false, "flags": [], "start_distance_m": 1398.0, "end_distance_m": 1418.0, "start_elevation_m": 341.5493933839352, "end_elevation_m": 345.6528538680708, "min_gradient_pct": 0.19432462010911422 }, { "window_m": 25.0, "max_gradient_pct": 20.05224140116934, "diagnostic": false, "flags": [], "start_distance_m": 1394.0, "end_distance_m": 1419.0, "start_elevation_m": 340.8082721685771, "end_elevation_m": 345.82133251886944, "min_gradient_pct": 0.22620226288563572 }, { "window_m": 50.0, "max_gradient_pct": 19.025482872621524, "diagnostic": false, "flags": [], "start_distance_m": 1389.0, "end_distance_m": 1439.0, "start_elevation_m": 339.95364599958526, "end_elevation_m": 349.466387435896, "min_gradient_pct": 0.6636093067794491 }, { "window_m": 100.0, "max_gradient_pct": 16.336937515082525, "diagnostic": false, "flags": [], "start_distance_m": 1399.0, "end_distance_m": 1499.0, "start_elevation_m": 341.7481627601227, "end_elevation_m": 358.0851002752052, "min_gradient_pct": 1.1706005976769802 } ], "shape": { "ascent_concentration": 0.392, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 176.0, "shape_class": "sustained" }, "length_m": 2124.9559653673896, "start_elevation_m": 254.9790284033146, "end_elevation_m": 412.57383773192475, "endpoint_gain_m": 157.59480932861015, "overall_gradient_pct": 7.416380004908156, "accumulated_ascent_m": 158.2017845863751, "window_maxima": { "max_5m": { "gradient_pct": 21.294478882033445, "start_distance_m": 1404.0, "end_distance_m": 1409.0, "midpoint_distance_m": 1406.5, "start_elevation_m": 342.7378376822429, "end_elevation_m": 343.8025616263446, "start_xy": [ 824777.9835583171, 6551480.86570741 ], "end_xy": [ 824774.6878770264, 6551477.105589747 ] }, "max_10m": { "gradient_pct": 21.063435681691658, "start_distance_m": 1404.0, "end_distance_m": 1414.0, "midpoint_distance_m": 1409.0, "start_elevation_m": 342.7378376822429, "end_elevation_m": 344.8441812504121, "start_xy": [ 824777.9835583171, 6551480.86570741 ], "end_xy": [ 824771.3186379579, 6551473.421519575 ] }, "max_20m": { "gradient_pct": 20.51730242067805, "start_distance_m": 1398.0, "end_distance_m": 1418.0, "midpoint_distance_m": 1408.0, "start_elevation_m": 341.5493933839352, "end_elevation_m": 345.6528538680708, "start_xy": [ 824781.9383758658, 6551485.377848604 ], "end_xy": [ 824768.2244798007, 6551470.886527405 ] }, "max_25m": { "gradient_pct": 20.05224140116934, "start_distance_m": 1394.0, "end_distance_m": 1419.0, "midpoint_distance_m": 1406.5, "start_elevation_m": 340.8082721685771, "end_elevation_m": 345.82133251886944, "start_xy": [ 824784.7746143572, 6551488.197244652 ], "end_xy": [ 824767.3094478756, 6551470.619186857 ] }, "max_50m": { "gradient_pct": 19.025482872621524, "start_distance_m": 1389.0, "end_distance_m": 1439.0, "midpoint_distance_m": 1414.0, "start_elevation_m": 339.95364599958526, "end_elevation_m": 349.466387435896, "start_xy": [ 824788.3422574283, 6551491.700375097 ], "end_xy": [ 824748.5513407392, 6551476.060773079 ] }, "max_100m": { "gradient_pct": 16.336937515082525, "start_distance_m": 1399.0, "end_distance_m": 1499.0, "midpoint_distance_m": 1449.0, "start_elevation_m": 341.7481627601227, "end_elevation_m": 358.0851002752052, "start_xy": [ 824781.2792396077, 6551484.625825072 ], "end_xy": [ 824693.8209384092, 6551483.3732044725 ] } }, "window_minima": { "min_5m": { "gradient_pct": -4.488991862853027, "start_distance_m": 1857.0, "end_distance_m": 1862.0, "midpoint_distance_m": 1859.5, "start_elevation_m": 382.6452443395037, "end_elevation_m": 382.420794746361, "start_xy": [ 824558.5035323899, 6551193.800239665 ], "end_xy": [ 824556.8352295035, 6551189.225092263 ] }, "min_10m": { "gradient_pct": -0.0858971444671397, "start_distance_m": 1706.0, "end_distance_m": 1716.0, "midpoint_distance_m": 1711.0, "start_elevation_m": 376.544992013848, "end_elevation_m": 376.5364022994013, "start_xy": [ 824597.9567870758, 6551309.087030841 ], "end_xy": [ 824600.1363533715, 6551299.327446282 ] }, "min_20m": { "gradient_pct": 0.19432462010911422, "start_distance_m": 1706.0, "end_distance_m": 1726.0, "midpoint_distance_m": 1716.0, "start_elevation_m": 376.544992013848, "end_elevation_m": 376.5838569378698, "start_xy": [ 824597.9567870758, 6551309.087030841 ], "end_xy": [ 824602.3159196672, 6551289.567861723 ] }, "min_25m": { "gradient_pct": 0.22620226288563572, "start_distance_m": 1706.0, "end_distance_m": 1731.0, "midpoint_distance_m": 1718.5, "start_elevation_m": 376.544992013848, "end_elevation_m": 376.6015425795694, "start_xy": [ 824597.9567870758, 6551309.087030841 ], "end_xy": [ 824603.405702815, 6551284.688069443 ] }, "min_50m": { "gradient_pct": 0.6636093067794491, "start_distance_m": 1709.0, "end_distance_m": 1759.0, "midpoint_distance_m": 1734.0, "start_elevation_m": 376.54254920812957, "end_elevation_m": 376.8743538615193, "start_xy": [ 824598.6106569646, 6551306.159155473 ], "end_xy": [ 824609.508488443, 6551257.361232678 ] }, "min_100m": { "gradient_pct": 1.1706005976769802, "start_distance_m": 1690.0, "end_distance_m": 1790.0, "midpoint_distance_m": 1740.0, "start_elevation_m": 376.11295687296086, "end_elevation_m": 377.28355747063785, "start_xy": [ 824599.779955081, 6551324.161520424 ], "end_xy": [ 824614.1379274923, 6551226.974905507 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 22.801555903754434, "start_distance_m": 1495.0, "end_distance_m": 1497.0, "midpoint_distance_m": 1496.0, "start_elevation_m": 357.23538944093474, "end_elevation_m": 357.6914205590098, "start_xy": [ 824697.1587011324, 6551485.577595546 ], "end_xy": [ 824695.4898197708, 6551484.475400009 ] }, "max_3m": { "gradient_pct": 21.371009052482275, "start_distance_m": 1410.0, "end_distance_m": 1413.0, "midpoint_distance_m": 1411.5, "start_elevation_m": 344.00928132008124, "end_elevation_m": 344.6504115916557, "start_xy": [ 824774.0287407682, 6551476.353566215 ], "end_xy": [ 824772.0513319938, 6551474.097495618 ] } }, "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": 0.01, "windows_resited": [], "windows_unresolved": [], "minima_resited": [ 10.0 ], "minima_unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.03, "obstruction_max_height_m": 14.69, "flagged_windows_m": [] }, "excluded_ranges_m": [ [ 0.0, 20.0 ] ], "review": [], "extent": [ "may_continue_beyond_end" ] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "076a8e7f889cfb3c2cf6b3de65a6030c7155b1f0", "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-mc8", "road_pbf": "block-batch-fr-mc8.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_E824-N6550_0m5@21LHD5NK-2025-02-20.tif", "data/cache/fr/ign-lidarhd_dtm_E824-N6551_0m5@21LHD5NK-2025-02-20.tif", "data/cache/fr/ign-lidarhd_dtm_E824-N6552_0m5@21LHD5NK-2025-02-20.tif", "data/cache/fr/ign-lidarhd_dtm_E825-N6551_0m5@21LHD5NK-2025-02-20.tif", "data/cache/fr/ign-lidarhd_dtm_E825-N6552_0m5@21LHD5NK-2025-02-20.tif" ], "calculated_at": "2026-09-22T15:27:42+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc8.osm.pbf", "osm_snapshot": "", "run_id": "fr-mc8", "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": [ "E824-N6550", "E824-N6551", "E824-N6552", "E825-N6551", "E825-N6552" ], "elevation_blocks": [ "21LHD5NK@2025-02-20" ], "ign_dalles": [ "LHD_FXX_0824_6551_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0824_6552_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0824_6553_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0825_6552_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0825_6553_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD5NK" ], "ign_editions": [ "2025-02-20" ], "ign_dsm_edition": { "LHD_FXX_0824_6551_MNT_O_0M50_LAMB93_IGN69": "2025-02-20", "LHD_FXX_0824_6552_MNT_O_0M50_LAMB93_IGN69": "2025-02-20", "LHD_FXX_0824_6553_MNT_O_0M50_LAMB93_IGN69": "2025-02-20", "LHD_FXX_0825_6552_MNT_O_0M50_LAMB93_IGN69": "2025-02-20", "LHD_FXX_0825_6553_MNT_O_0M50_LAMB93_IGN69": "2025-02-20" }, "climb_origin": "discovered", "structure_own_ways": 5, "structure_mask_ranges_m": [ [ 0.0, 15.0 ] ], "carriageway": { "stations": 91, "stations_resolved": 91, "width_median_m": 5.5, "width_p10_m": 4.0, "width_min_m": 3.25, "width_max_m": 12.0, "bounded_share": 0.11, "unbounded_share": 0.89, "confidence_median": 0.0, "width_median_bounded_m": 4.5, "window_m": [ 1394.0, 1419.0 ], "width_at_max25_m": 5.25, "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": 91, "stations_resolved": 91, "width_median_m": 8.75, "width_p10_m": 4.75, "width_min_m": 1.0, "width_max_m": 12.0, "bounded_share": 0.374, "unbounded_share": 0.626, "confidence_median": 0.0, "width_median_bounded_m": 6.25, "window_m": [ 1394.0, 1419.0 ], "width_at_max25_m": 8.75, "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": "Le Perr\u00e9on", "county": "Rh\u00f4ne", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }