{ "ocl_version": "0.1.0", "name": "Col du Sapet from Saint-Julien-d'Arpaon", "slug": "col-du-sapet-from-saint-julien-d-arpaon", "confidence": "U", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 50.06934988350622, "diagnostic": true, "flags": [ "structure_excluded", "structure_excluded_min", "canopy_or_structure" ], "start_distance_m": 1495.0, "end_distance_m": 1497.0, "start_elevation_m": 650.3030317153386, "end_elevation_m": 651.3044187130088, "min_gradient_pct": -44.418302801034315, "suppressed_max_gradient_pct": 175.42203781756598, "suppressed_location_m": [ 1079.0, 1081.0 ], "suppressed_min_gradient_pct": -104.69873060315535, "suppressed_min_location_m": [ 1066.0, 1068.0 ] }, { "window_m": 3.0, "max_gradient_pct": 39.22635005947465, "diagnostic": true, "flags": [ "structure_excluded", "structure_excluded_min", "no_bench_excluded", "canopy_or_structure" ], "start_distance_m": 1495.0, "end_distance_m": 1498.0, "start_elevation_m": 650.3030317153386, "end_elevation_m": 651.4798222171229, "min_gradient_pct": -48.26777215375463, "suppressed_max_gradient_pct": 175.05099878644614, "suppressed_location_m": [ 1078.0, 1081.0 ], "suppressed_min_gradient_pct": -104.69928620616808, "suppressed_min_location_m": [ 1065.0, 1068.0 ] }, { "window_m": 5.0, "max_gradient_pct": 28.171679122210662, "diagnostic": false, "flags": [ "structure_excluded", "structure_excluded_min", "no_bench_excluded", "canopy_or_structure" ], "start_distance_m": 906.0, "end_distance_m": 911.0, "start_elevation_m": 622.7321988141716, "end_elevation_m": 624.1407827702822, "min_gradient_pct": -35.87161344184551, "suppressed_max_gradient_pct": 173.30550671696528, "suppressed_location_m": [ 1077.0, 1082.0 ], "suppressed_min_gradient_pct": -102.41461944308412, "suppressed_min_location_m": [ 1065.0, 1070.0 ] }, { "window_m": 10.0, "max_gradient_pct": 19.206855646590384, "diagnostic": false, "flags": [ "structure_excluded", "structure_excluded_min", "no_bench_excluded", "canopy_or_structure" ], "start_distance_m": 5007.0, "end_distance_m": 5017.0, "start_elevation_m": 917.6227896255402, "end_elevation_m": 919.5434751901993, "min_gradient_pct": -18.327995194939604, "suppressed_max_gradient_pct": 124.22245910939068, "suppressed_location_m": [ 1075.0, 1085.0 ], "suppressed_min_gradient_pct": -72.46015399626458, "suppressed_min_location_m": [ 1060.0, 1070.0 ] }, { "window_m": 20.0, "max_gradient_pct": 14.566137525516183, "diagnostic": false, "flags": [ "structure_excluded", "structure_excluded_min", "no_bench_excluded_min", "canopy_or_structure" ], "start_distance_m": 5007.0, "end_distance_m": 5027.0, "start_elevation_m": 917.6227896255402, "end_elevation_m": 920.5360171306435, "min_gradient_pct": -8.614082353244612, "suppressed_max_gradient_pct": 62.96853021735501, "suppressed_location_m": [ 1075.0, 1095.0 ], "suppressed_min_gradient_pct": -60.40930063813903, "suppressed_min_location_m": [ 1050.0, 1070.0 ] }, { "window_m": 25.0, "max_gradient_pct": 13.55493689335708, "diagnostic": false, "flags": [ "structure_excluded", "structure_excluded_min", "canopy_or_structure" ], "start_distance_m": 5007.0, "end_distance_m": 5032.0, "start_elevation_m": 917.6227896255402, "end_elevation_m": 921.0115238488795, "min_gradient_pct": -5.815478014179462, "suppressed_max_gradient_pct": 51.25329976911598, "suppressed_location_m": [ 1075.0, 1100.0 ], "suppressed_min_gradient_pct": -49.80226894877342, "suppressed_min_location_m": [ 1047.0, 1072.0 ] }, { "window_m": 50.0, "max_gradient_pct": 10.609360975187883, "diagnostic": false, "flags": [ "structure_excluded", "structure_excluded_min", "canopy_or_structure" ], "start_distance_m": 5000.0, "end_distance_m": 5050.0, "start_elevation_m": 917.0449881343411, "end_elevation_m": 922.349668621935, "min_gradient_pct": -5.6434215701826815, "suppressed_max_gradient_pct": 26.8352505801015, "suppressed_location_m": [ 1075.0, 1125.0 ], "suppressed_min_gradient_pct": -25.264041102147758, "suppressed_min_location_m": [ 1025.0, 1075.0 ] }, { "window_m": 100.0, "max_gradient_pct": 8.922329498838621, "diagnostic": false, "flags": [ "structure_excluded", "structure_excluded_min", "canopy_or_structure" ], "start_distance_m": 5007.0, "end_distance_m": 5107.0, "start_elevation_m": 917.6227896255402, "end_elevation_m": 926.5451191243789, "min_gradient_pct": -5.300937009709173, "suppressed_max_gradient_pct": 17.07039143062582, "suppressed_location_m": [ 1075.0, 1175.0 ], "suppressed_min_gradient_pct": -11.750438857244603, "suppressed_min_location_m": [ 975.0, 1075.0 ] } ], "shape": { "ascent_concentration": 0.285, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 37.0, "shape_class": "sustained" }, "length_m": 7041.051934846318, "start_elevation_m": 620.0238860058496, "end_elevation_m": 1079.5635285058675, "endpoint_gain_m": 459.53964250001786, "overall_gradient_pct": 6.526576522262906, "accumulated_ascent_m": 503.1611443256387, "window_maxima": { "max_5m": { "gradient_pct": 28.171679122210662, "start_distance_m": 906.0, "end_distance_m": 911.0, "midpoint_distance_m": 908.5, "start_elevation_m": 622.7321988141716, "end_elevation_m": 624.1407827702822, "start_xy": [ 752859.9536723186, 6356787.981681515 ], "end_xy": [ 752860.2243610715, 6356792.974348899 ] }, "max_10m": { "gradient_pct": 19.206855646590384, "start_distance_m": 5007.0, "end_distance_m": 5017.0, "midpoint_distance_m": 5012.0, "start_elevation_m": 917.6227896255402, "end_elevation_m": 919.5434751901993, "start_xy": [ 752941.4342669038, 6358068.024494387 ], "end_xy": [ 752945.9595215385, 6358076.942009202 ] }, "max_20m": { "gradient_pct": 14.566137525516183, "start_distance_m": 5007.0, "end_distance_m": 5027.0, "midpoint_distance_m": 5017.0, "start_elevation_m": 917.6227896255402, "end_elevation_m": 920.5360171306435, "start_xy": [ 752941.4342669038, 6358068.024494387 ], "end_xy": [ 752952.2616169042, 6358084.392491181 ] }, "max_25m": { "gradient_pct": 13.55493689335708, "start_distance_m": 5007.0, "end_distance_m": 5032.0, "midpoint_distance_m": 5019.5, "start_elevation_m": 917.6227896255402, "end_elevation_m": 921.0115238488795, "start_xy": [ 752941.4342669038, 6358068.024494387 ], "end_xy": [ 752956.2114897218, 6358087.458189263 ] }, "max_50m": { "gradient_pct": 10.609360975187883, "start_distance_m": 5000.0, "end_distance_m": 5050.0, "midpoint_distance_m": 5025.0, "start_elevation_m": 917.0449881343411, "end_elevation_m": 922.349668621935, "start_xy": [ 752938.2665886596, 6358061.782234016 ], "end_xy": [ 752971.9714079502, 6358095.790078736 ] }, "max_100m": { "gradient_pct": 8.922329498838621, "start_distance_m": 5007.0, "end_distance_m": 5107.0, "midpoint_distance_m": 5057.0, "start_elevation_m": 917.6227896255402, "end_elevation_m": 926.5451191243789, "start_xy": [ 752941.4342669038, 6358068.024494387 ], "end_xy": [ 753027.5780028766, 6358102.6818691585 ] } }, "window_minima": { "min_5m": { "gradient_pct": -35.87161344184551, "start_distance_m": 881.0, "end_distance_m": 886.0, "midpoint_distance_m": 883.5, "start_elevation_m": 624.1497247117868, "end_elevation_m": 622.3561440396945, "start_xy": [ 752860.2417033726, 6356763.005220166 ], "end_xy": [ 752860.0508819992, 6356768.00157756 ] }, "min_10m": { "gradient_pct": -18.327995194939604, "start_distance_m": 846.0, "end_distance_m": 856.0, "midpoint_distance_m": 851.0, "start_elevation_m": 623.6374733052014, "end_elevation_m": 621.8046737857075, "start_xy": [ 752849.9962087538, 6356730.428590996 ], "end_xy": [ 752854.3143201938, 6356739.448231432 ] }, "min_20m": { "gradient_pct": -8.614082353244612, "start_distance_m": 866.0, "end_distance_m": 886.0, "midpoint_distance_m": 876.0, "start_elevation_m": 624.0789605103434, "end_elevation_m": 622.3561440396945, "start_xy": [ 752858.632431634, 6356748.467871868 ], "end_xy": [ 752860.0508819992, 6356768.00157756 ] }, "min_25m": { "gradient_pct": -5.815478014179462, "start_distance_m": 279.0, "end_distance_m": 304.0, "midpoint_distance_m": 291.5, "start_elevation_m": 618.0571447560912, "end_elevation_m": 616.6032752525464, "start_xy": [ 752801.8567541508, 6356341.077030775 ], "end_xy": [ 752784.3903445824, 6356358.94281492 ] }, "min_50m": { "gradient_pct": -5.6434215701826815, "start_distance_m": 195.0, "end_distance_m": 245.0, "midpoint_distance_m": 220.0, "start_elevation_m": 622.4090295044582, "end_elevation_m": 619.5873187193669, "start_xy": [ 752864.3983161639, 6356285.360325766 ], "end_xy": [ 752825.2962057932, 6356316.470995369 ] }, "min_100m": { "gradient_pct": -5.300937009709173, "start_distance_m": 206.0, "end_distance_m": 306.0, "midpoint_distance_m": 256.0, "start_elevation_m": 621.817720133513, "end_elevation_m": 616.5167831238039, "start_xy": [ 752855.6877018713, 6356292.077854972 ], "end_xy": [ 752782.9234495073, 6356360.302307045 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 50.06934988350622, "start_distance_m": 1495.0, "end_distance_m": 1497.0, "midpoint_distance_m": 1496.0, "start_elevation_m": 650.3030317153386, "end_elevation_m": 651.3044187130088, "start_xy": [ 752838.4660354065, 6356936.284384226 ], "end_xy": [ 752840.2706885111, 6356937.146490468 ] }, "max_3m": { "gradient_pct": 39.22635005947465, "start_distance_m": 1495.0, "end_distance_m": 1498.0, "midpoint_distance_m": 1496.5, "start_elevation_m": 650.3030317153386, "end_elevation_m": 651.4798222171229, "start_xy": [ 752838.4660354065, 6356936.284384226 ], "end_xy": [ 752841.1730150635, 6356937.577543588 ] } }, "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": 0.012, "windows_resited": [ 2.0, 3.0, 5.0, 10.0, 20.0, 25.0, 50.0, 100.0 ], "windows_unresolved": [], "minima_resited": [ 2.0, 3.0, 5.0, 10.0, 20.0, 25.0, 50.0, 100.0 ], "minima_unresolved": [] }, "no_bench_suppression": { "masked_fraction": 0.015, "windows_resited": [ 3.0, 5.0, 10.0 ], "windows_unresolved": [], "minima_resited": [ 20.0 ], "minima_unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.139, "obstruction_max_height_m": 30.46, "flagged_windows_m": [ 2, 3, 5, 10, 20, 25, 50, 100 ] }, "excluded_ranges_m": [ [ 809.0, 840.0 ], [ 857.0, 863.0 ], [ 888.0, 893.0 ], [ 1047.0, 1090.0 ], [ 4747.0, 4764.0 ] ], "review": [ "short_window_divergence" ], "extent": [] }, "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_E752-N6356_0m5@21LHD4MO-2024-12-13.tif", "data/cache/fr/ign-lidarhd_dtm_E752-N6357_0m5@21LHD4MO-2024-12-13.tif", "data/cache/fr/ign-lidarhd_dtm_E752-N6358_0m5@21LHD4MO-2024-12-13.tif", "data/cache/fr/ign-lidarhd_dtm_E753-N6356_0m5@21LHD4MO-2024-12-13.tif", "data/cache/fr/ign-lidarhd_dtm_E753-N6357_0m5@21LHD4MO-2024-12-13.tif", "data/cache/fr/ign-lidarhd_dtm_E753-N6358_0m5@21LHD4MO-2024-12-13.tif", "data/cache/fr/ign-lidarhd_dtm_E754-N6358_0m5@21LHD4MO-2024-12-13.tif" ], "calculated_at": "2026-09-22T15:54:31+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": [ "E752-N6356", "E752-N6357", "E752-N6358", "E753-N6356", "E753-N6357", "E753-N6358", "E754-N6358" ], "elevation_blocks": [ "21LHD4MO@2024-12-13" ], "ign_dalles": [ "LHD_FXX_0752_6357_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0752_6358_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0752_6359_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0753_6357_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0753_6358_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0753_6359_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0754_6359_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD4MO" ], "ign_editions": [ "2024-12-13" ], "ign_dsm_edition": { "LHD_FXX_0752_6357_MNT_O_0M50_LAMB93_IGN69": "2024-12-13", "LHD_FXX_0752_6358_MNT_O_0M50_LAMB93_IGN69": "2024-12-13", "LHD_FXX_0752_6359_MNT_O_0M50_LAMB93_IGN69": "2024-12-13", "LHD_FXX_0753_6357_MNT_O_0M50_LAMB93_IGN69": "2024-12-13", "LHD_FXX_0753_6358_MNT_O_0M50_LAMB93_IGN69": "2024-12-13", "LHD_FXX_0753_6359_MNT_O_0M50_LAMB93_IGN69": "2024-12-13", "LHD_FXX_0754_6359_MNT_O_0M50_LAMB93_IGN69": "2024-12-13" }, "climb_origin": "named-pass", "structure_own_ways": 6, "structure_mask_ranges_m": [ [ 1064.2, 1085.3 ], [ 4752.3, 4759.6 ] ], "mask_basin_extension_m": 12.0, "carriageway": { "stations": 288, "stations_resolved": 288, "width_median_m": 5.0, "width_p10_m": 3.5, "width_min_m": 0.5, "width_max_m": 10.0, "bounded_share": 0.635, "unbounded_share": 0.365, "confidence_median": 0.635, "width_median_bounded_m": 5.0, "window_m": [ 5007.0, 5032.0 ], "width_at_max25_m": 5.0, "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": 288, "stations_resolved": 288, "width_median_m": 6.0, "width_p10_m": 1.25, "width_min_m": 0.0, "width_max_m": 12.0, "bounded_share": 0.889, "unbounded_share": 0.111, "confidence_median": 1.0, "width_median_bounded_m": 5.75, "window_m": [ 5007.0, 5032.0 ], "width_at_max25_m": 4.0, "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": "Cans et C\u00e9vennes", "county": "Loz\u00e8re", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }