{ "ocl_version": "0.1.0", "name": "Chemin de M\u00e2nes", "slug": "chemin-de-manes", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 31.14897163418533, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 1589.0, "end_distance_m": 1591.0, "start_elevation_m": 230.87578027435552, "end_elevation_m": 231.49875970703923, "min_gradient_pct": -23.90236623882913 }, { "window_m": 3.0, "max_gradient_pct": 30.07325153826912, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 1588.0, "end_distance_m": 1591.0, "start_elevation_m": 230.59656216089115, "end_elevation_m": 231.49875970703923, "min_gradient_pct": -13.182895906156963 }, { "window_m": 5.0, "max_gradient_pct": 28.284620192797547, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1587.0, "end_distance_m": 1592.0, "start_elevation_m": 230.334400427927, "end_elevation_m": 231.74863143756687, "min_gradient_pct": -12.571231538076972 }, { "window_m": 10.0, "max_gradient_pct": 23.374432150519908, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1586.0, "end_distance_m": 1596.0, "start_elevation_m": 230.1234853632321, "end_elevation_m": 232.4609285782841, "min_gradient_pct": -11.9810965755957 }, { "window_m": 20.0, "max_gradient_pct": 21.22878969563388, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1549.0, "end_distance_m": 1569.0, "start_elevation_m": 223.44674800449155, "end_elevation_m": 227.69250594361833, "min_gradient_pct": -11.087881671236772 }, { "window_m": 25.0, "max_gradient_pct": 20.614062198581678, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1547.0, "end_distance_m": 1572.0, "start_elevation_m": 223.05178570472756, "end_elevation_m": 228.20530125437298, "min_gradient_pct": -10.528213210042964 }, { "window_m": 50.0, "max_gradient_pct": 19.218226517786775, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1545.0, "end_distance_m": 1595.0, "start_elevation_m": 222.6997911670465, "end_elevation_m": 232.3089044259399, "min_gradient_pct": -8.210531774626304 }, { "window_m": 100.0, "max_gradient_pct": 15.70745019947293, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1515.0, "end_distance_m": 1615.0, "start_elevation_m": 218.7781659850142, "end_elevation_m": 234.48561618448713, "min_gradient_pct": -6.27058082996308 } ], "shape": { "ascent_concentration": 0.393, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 89.0, "shape_class": "sustained" }, "length_m": 1865.5329403927487, "start_elevation_m": 160.31697927027608, "end_elevation_m": 256.2705838371412, "endpoint_gain_m": 95.95360456686512, "overall_gradient_pct": 5.143495592560489, "accumulated_ascent_m": 112.51658288286868, "window_maxima": { "max_5m": { "gradient_pct": 28.284620192797547, "start_distance_m": 1587.0, "end_distance_m": 1592.0, "midpoint_distance_m": 1589.5, "start_elevation_m": 230.334400427927, "end_elevation_m": 231.74863143756687, "start_xy": [ 425850.9509276982, 6268415.613959487 ], "end_xy": [ 425848.8596398221, 6268420.1556018125 ] }, "max_10m": { "gradient_pct": 23.374432150519908, "start_distance_m": 1586.0, "end_distance_m": 1596.0, "midpoint_distance_m": 1591.0, "start_elevation_m": 230.1234853632321, "end_elevation_m": 232.4609285782841, "start_xy": [ 425851.3691852734, 6268414.705631021 ], "end_xy": [ 425847.07112814527, 6268423.703214727 ] }, "max_20m": { "gradient_pct": 21.22878969563388, "start_distance_m": 1549.0, "end_distance_m": 1569.0, "midpoint_distance_m": 1559.0, "start_elevation_m": 223.44674800449155, "end_elevation_m": 227.69250594361833, "start_xy": [ 425858.07805929356, 6268378.379881878 ], "end_xy": [ 425854.4768716115, 6268398.018338563 ] }, "max_25m": { "gradient_pct": 20.614062198581678, "start_distance_m": 1547.0, "end_distance_m": 1572.0, "midpoint_distance_m": 1559.5, "start_elevation_m": 223.05178570472756, "end_elevation_m": 228.20530125437298, "start_xy": [ 425859.10366554884, 6268376.662869412 ], "end_xy": [ 425853.9636894068, 6268400.974120021 ] }, "max_50m": { "gradient_pct": 19.218226517786775, "start_distance_m": 1545.0, "end_distance_m": 1595.0, "midpoint_distance_m": 1570.0, "start_elevation_m": 222.6997911670465, "end_elevation_m": 232.3089044259399, "start_xy": [ 425860.1292718042, 6268374.9458569465 ], "end_xy": [ 425847.6048670964, 6268422.880587209 ] }, "max_100m": { "gradient_pct": 15.70745019947293, "start_distance_m": 1515.0, "end_distance_m": 1615.0, "midpoint_distance_m": 1565.0, "start_elevation_m": 218.7781659850142, "end_elevation_m": 234.48561618448713, "start_xy": [ 425875.5133656336, 6268349.190669954 ], "end_xy": [ 425832.6770733594, 6268436.041108481 ] } }, "window_minima": { "min_5m": { "gradient_pct": -12.571231538076972, "start_distance_m": 510.0, "end_distance_m": 515.0, "midpoint_distance_m": 512.5, "start_elevation_m": 192.6856114977536, "end_elevation_m": 192.05704992084975, "start_xy": [ 426701.6373347993, 6268611.84766114 ], "end_xy": [ 426698.39846422395, 6268608.050053277 ] }, "min_10m": { "gradient_pct": -11.9810965755957, "start_distance_m": 508.0, "end_distance_m": 518.0, "midpoint_distance_m": 513.0, "start_elevation_m": 192.92236261340867, "end_elevation_m": 191.7242529558491, "start_xy": [ 426702.74081355106, 6268613.515694307 ], "end_xy": [ 426696.38657506293, 6268605.824676454 ] }, "min_20m": { "gradient_pct": -11.087881671236772, "start_distance_m": 502.0, "end_distance_m": 522.0, "midpoint_distance_m": 512.0, "start_elevation_m": 193.53329318379957, "end_elevation_m": 191.31571684955222, "start_xy": [ 426706.0512498063, 6268618.519793807 ], "end_xy": [ 426693.70405618154, 6268602.857507356 ] }, "min_25m": { "gradient_pct": -10.528213210042964, "start_distance_m": 499.0, "end_distance_m": 524.0, "midpoint_distance_m": 511.5, "start_elevation_m": 193.7832958878315, "end_elevation_m": 191.15124258532077, "start_xy": [ 426707.70646793395, 6268621.021843556 ], "end_xy": [ 426692.36279674084, 6268601.373922808 ] }, "min_50m": { "gradient_pct": -8.210531774626304, "start_distance_m": 483.0, "end_distance_m": 533.0, "midpoint_distance_m": 508.0, "start_elevation_m": 194.82007862622774, "end_elevation_m": 190.7148127389146, "start_xy": [ 426717.1770561208, 6268633.89151707 ], "end_xy": [ 426685.7393939351, 6268595.46833783 ] }, "min_100m": { "gradient_pct": -6.27058082996308, "start_distance_m": 496.0, "end_distance_m": 596.0, "midpoint_distance_m": 546.0, "start_elevation_m": 194.00371024252826, "end_elevation_m": 187.73312941256518, "start_xy": [ 426709.36168606154, 6268623.523893306 ], "end_xy": [ 426630.84312453767, 6268565.0775438985 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 31.14897163418533, "start_distance_m": 1589.0, "end_distance_m": 1591.0, "midpoint_distance_m": 1590.0, "start_elevation_m": 230.87578027435552, "end_elevation_m": 231.49875970703923, "start_xy": [ 425850.1144125478, 6268417.430616417 ], "end_xy": [ 425849.2778973973, 6268419.247273347 ] }, "max_3m": { "gradient_pct": 30.07325153826912, "start_distance_m": 1588.0, "end_distance_m": 1591.0, "midpoint_distance_m": 1589.5, "start_elevation_m": 230.59656216089115, "end_elevation_m": 231.49875970703923, "start_xy": [ 425850.532670123, 6268416.522287952 ], "end_xy": [ 425849.2778973973, 6268419.247273347 ] } }, "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": 0.269, "obstruction_max_height_m": 24.59, "flagged_windows_m": [ 2, 3, 5, 10, 20, 25, 50, 100 ] }, "review": [], "extent": [ "may_continue_beyond_end" ] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "06fa4c370391597f015858e97dcf01ca2f5b3640", "code_git_dirty": "false", "analysis_version": "0.1.0", "analysis_config_digest": "sha256:0048c2bbb24ab95e", "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-pyr1", "road_pbf": "block-batch-fr-pyr1.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:c54ac68b3f57b41b" }, "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_E425-N6268_0m5@21LHD1FQ-2025-09-15.tif", "data/cache/fr/ign-lidarhd_dtm_E426-N6268_0m5@21LHD1FQ-2025-09-15.tif", "data/cache/fr/ign-lidarhd_dtm_E427-N6268_0m5@21LHD1FQ-2025-09-15.tif" ], "calculated_at": "2026-09-20T06:09:06+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-pyr1.osm.pbf", "osm_snapshot": "", "run_id": "fr-pyr1", "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": [ "E425-N6268", "E426-N6268", "E427-N6268" ], "elevation_blocks": [ "21LHD1FQ@2025-09-15" ], "ign_dalles": [ "LHD_FXX_0425_6269_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0426_6269_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0427_6269_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD1FQ" ], "ign_editions": [ "2025-09-15" ], "ign_dsm_edition": { "LHD_FXX_0425_6269_MNT_O_0M50_LAMB93_IGN69": "2025-09-15", "LHD_FXX_0426_6269_MNT_O_0M50_LAMB93_IGN69": "2025-09-15", "LHD_FXX_0427_6269_MNT_O_0M50_LAMB93_IGN69": "2025-09-15" }, "climb_origin": "discovered", "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked", "carriageway": { "stations": 81, "stations_resolved": 81, "width_median_m": 5.0, "width_p10_m": 3.5, "width_min_m": 0.5, "width_max_m": 10.75, "bounded_share": 0.358, "unbounded_share": 0.642, "confidence_median": 0.0, "width_median_bounded_m": 4.5, "window_m": [ 1547.0, 1572.0 ], "width_at_max25_m": 6.0, "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": 81, "stations_resolved": 81, "width_median_m": 5.5, "width_p10_m": 1.25, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.864, "unbounded_share": 0.136, "confidence_median": 1.0, "width_median_bounded_m": 5.5, "window_m": [ 1547.0, 1572.0 ], "width_at_max25_m": 2.25, "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": "Viven", "county": "Pyr\u00e9n\u00e9es-Atlantiques", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }