{ "ocl_version": "0.1.0", "name": "Chemin de l'Homme", "slug": "chemin-de-l-homme", "confidence": "U", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 36.23426184971095, "diagnostic": true, "flags": [ "structure_excluded", "structure_excluded_min", "canopy_or_structure" ], "start_distance_m": 1172.0, "end_distance_m": 1174.0, "start_elevation_m": 654.6644038955665, "end_elevation_m": 655.3890891325607, "min_gradient_pct": -19.86498104678276, "suppressed_max_gradient_pct": 101.39765538007168, "suppressed_location_m": [ 1132.0, 1134.0 ], "suppressed_min_gradient_pct": -134.22373273929793, "suppressed_min_location_m": [ 1145.0, 1147.0 ] }, { "window_m": 3.0, "max_gradient_pct": 35.06773987110137, "diagnostic": true, "flags": [ "structure_excluded", "structure_excluded_min", "canopy_or_structure" ], "start_distance_m": 1170.0, "end_distance_m": 1173.0, "start_elevation_m": 654.0292709948036, "end_elevation_m": 655.0813031909366, "min_gradient_pct": -17.890736182751727, "suppressed_max_gradient_pct": 89.82851860529688, "suppressed_location_m": [ 1132.0, 1135.0 ], "suppressed_min_gradient_pct": -128.16138860067667, "suppressed_min_location_m": [ 1144.0, 1147.0 ] }, { "window_m": 5.0, "max_gradient_pct": 30.290334486296615, "diagnostic": false, "flags": [ "structure_excluded", "structure_excluded_min", "canopy_or_structure" ], "start_distance_m": 1170.0, "end_distance_m": 1175.0, "start_elevation_m": 654.0292709948036, "end_elevation_m": 655.5437877191184, "min_gradient_pct": -14.476610448089104, "suppressed_max_gradient_pct": 68.75179218097173, "suppressed_location_m": [ 1131.0, 1136.0 ], "suppressed_min_gradient_pct": -74.00310035380699, "suppressed_min_location_m": [ 1144.0, 1149.0 ] }, { "window_m": 10.0, "max_gradient_pct": 21.912145233025058, "diagnostic": false, "flags": [ "structure_excluded", "structure_excluded_min" ], "start_distance_m": 436.0, "end_distance_m": 446.0, "start_elevation_m": 597.2859978629117, "end_elevation_m": 599.4772123862142, "min_gradient_pct": -12.476719958156082, "suppressed_max_gradient_pct": 47.413021475192636, "suppressed_location_m": [ 1130.0, 1140.0 ], "suppressed_min_gradient_pct": -29.75774805570154, "suppressed_min_location_m": [ 1144.0, 1154.0 ] }, { "window_m": 20.0, "max_gradient_pct": 20.82253645297726, "diagnostic": false, "flags": [ "structure_excluded" ], "start_distance_m": 435.0, "end_distance_m": 455.0, "start_elevation_m": 597.0773937799433, "end_elevation_m": 601.2419010705388, "min_gradient_pct": -10.440956042475023, "suppressed_max_gradient_pct": 30.81319528129768, "suppressed_location_m": [ 1124.0, 1144.0 ] }, { "window_m": 25.0, "max_gradient_pct": 20.390813097893897, "diagnostic": false, "flags": [ "structure_excluded" ], "start_distance_m": 435.0, "end_distance_m": 460.0, "start_elevation_m": 597.0773937799433, "end_elevation_m": 602.1750970544168, "min_gradient_pct": -9.833078178789037, "suppressed_max_gradient_pct": 25.722618052502185, "suppressed_location_m": [ 1118.0, 1143.0 ] }, { "window_m": 50.0, "max_gradient_pct": 19.405318694905418, "diagnostic": false, "flags": [ "no_bench_excluded_min" ], "start_distance_m": 435.0, "end_distance_m": 485.0, "start_elevation_m": 597.0773937799433, "end_elevation_m": 606.7800531273961, "min_gradient_pct": -6.266978012190975, "suppressed_min_gradient_pct": -6.5338796269559225, "suppressed_min_location_m": [ 1415.0, 1465.0 ] }, { "window_m": 100.0, "max_gradient_pct": 18.978318820251843, "diagnostic": false, "flags": [ "no_bench_excluded_min" ], "start_distance_m": 391.0, "end_distance_m": 491.0, "start_elevation_m": 588.954028360547, "end_elevation_m": 607.9323471807988, "min_gradient_pct": -2.7926565615433674, "suppressed_min_gradient_pct": -4.825705310302965, "suppressed_min_location_m": [ 1415.0, 1515.0 ] } ], "shape": { "ascent_concentration": 0.413, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 217.0, "shape_class": "sustained" }, "length_m": 2028.8079338323132, "start_elevation_m": 556.5709569383207, "end_elevation_m": 685.8186616992112, "endpoint_gain_m": 129.24770476089054, "overall_gradient_pct": 6.370622995186554, "accumulated_ascent_m": 151.39592809789417, "window_maxima": { "max_5m": { "gradient_pct": 30.290334486296615, "start_distance_m": 1170.0, "end_distance_m": 1175.0, "midpoint_distance_m": 1172.5, "start_elevation_m": 654.0292709948036, "end_elevation_m": 655.5437877191184, "start_xy": [ 823166.8904398344, 6442238.8780559 ], "end_xy": [ 823167.4624596976, 6442233.910884344 ] }, "max_10m": { "gradient_pct": 21.912145233025058, "start_distance_m": 436.0, "end_distance_m": 446.0, "midpoint_distance_m": 441.0, "start_elevation_m": 597.2859978629117, "end_elevation_m": 599.4772123862142, "start_xy": [ 823522.4809389308, 6442767.964109037 ], "end_xy": [ 823514.2834612228, 6442762.236861948 ] }, "max_20m": { "gradient_pct": 20.82253645297726, "start_distance_m": 435.0, "end_distance_m": 455.0, "midpoint_distance_m": 445.0, "start_elevation_m": 597.0773937799433, "end_elevation_m": 601.2419010705388, "start_xy": [ 823523.3006867016, 6442768.536833746 ], "end_xy": [ 823506.9057312856, 6442757.082339567 ] }, "max_25m": { "gradient_pct": 20.390813097893897, "start_distance_m": 435.0, "end_distance_m": 460.0, "midpoint_distance_m": 447.5, "start_elevation_m": 597.0773937799433, "end_elevation_m": 602.1750970544168, "start_xy": [ 823523.3006867016, 6442768.536833746 ], "end_xy": [ 823502.8069924315, 6442754.218716022 ] }, "max_50m": { "gradient_pct": 19.405318694905418, "start_distance_m": 435.0, "end_distance_m": 485.0, "midpoint_distance_m": 460.0, "start_elevation_m": 597.0773937799433, "end_elevation_m": 606.7800531273961, "start_xy": [ 823523.3006867016, 6442768.536833746 ], "end_xy": [ 823482.6277977467, 6442739.484002387 ] }, "max_100m": { "gradient_pct": 18.978318820251843, "start_distance_m": 391.0, "end_distance_m": 491.0, "midpoint_distance_m": 441.0, "start_elevation_m": 588.954028360547, "end_elevation_m": 607.9323471807988, "start_xy": [ 823556.6630203552, 6442797.10225314 ], "end_xy": [ 823477.9754744673, 6442735.6950859055 ] } }, "window_minima": { "min_5m": { "gradient_pct": -14.476610448089104, "start_distance_m": 1019.0, "end_distance_m": 1024.0, "midpoint_distance_m": 1021.5, "start_elevation_m": 646.9210341125565, "end_elevation_m": 646.1972035901521, "start_xy": [ 823122.6739399405, 6442377.374246154 ], "end_xy": [ 823122.6375854259, 6442372.374378321 ] }, "min_10m": { "gradient_pct": -12.476719958156082, "start_distance_m": 1016.0, "end_distance_m": 1026.0, "midpoint_distance_m": 1021.0, "start_elevation_m": 647.3898045577954, "end_elevation_m": 646.1421325619798, "start_xy": [ 823122.9017346562, 6442380.345329666 ], "end_xy": [ 823122.6230436199, 6442370.374431187 ] }, "min_20m": { "gradient_pct": -10.440956042475023, "start_distance_m": 1633.0, "end_distance_m": 1653.0, "midpoint_distance_m": 1643.0, "start_elevation_m": 673.6138695514956, "end_elevation_m": 671.5256783430005, "start_xy": [ 823088.1089673537, 6441826.539854934 ], "end_xy": [ 823081.9597705066, 6441807.508633793 ] }, "min_25m": { "gradient_pct": -9.833078178789037, "start_distance_m": 1628.0, "end_distance_m": 1653.0, "midpoint_distance_m": 1640.5, "start_elevation_m": 673.9839478876978, "end_elevation_m": 671.5256783430005, "start_xy": [ 823089.6462665655, 6441831.2976602195 ], "end_xy": [ 823081.9597705066, 6441807.508633793 ] }, "min_50m": { "gradient_pct": -6.266978012190975, "start_distance_m": 1605.0, "end_distance_m": 1655.0, "midpoint_distance_m": 1630.0, "start_elevation_m": 674.5501515506579, "end_elevation_m": 671.4166625445624, "start_xy": [ 823091.300049072, 6441853.928521008 ], "end_xy": [ 823081.3448508219, 6441805.605511678 ] }, "min_100m": { "gradient_pct": -2.7926565615433674, "start_distance_m": 1558.0, "end_distance_m": 1658.0, "midpoint_distance_m": 1608.0, "start_elevation_m": 674.2034728399432, "end_elevation_m": 671.4108162783998, "start_xy": [ 823084.2147366303, 6441899.8979532905 ], "end_xy": [ 823080.2980168138, 6441802.82051144 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 36.23426184971095, "start_distance_m": 1172.0, "end_distance_m": 1174.0, "midpoint_distance_m": 1173.0, "start_elevation_m": 654.6644038955665, "end_elevation_m": 655.3890891325607, "start_xy": [ 823167.1192477797, 6442236.891187278 ], "end_xy": [ 823167.348055725, 6442234.904318655 ] }, "max_3m": { "gradient_pct": 35.06773987110137, "start_distance_m": 1170.0, "end_distance_m": 1173.0, "midpoint_distance_m": 1171.5, "start_elevation_m": 654.0292709948036, "end_elevation_m": 655.0813031909366, "start_xy": [ 823166.8904398344, 6442238.8780559 ], "end_xy": [ 823167.2336517524, 6442235.897752967 ] } }, "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": 0.023, "windows_resited": [ 2.0, 3.0, 5.0, 10.0, 20.0, 25.0 ], "windows_unresolved": [], "minima_resited": [ 2.0, 3.0, 5.0, 10.0 ], "minima_unresolved": [] }, "no_bench_suppression": { "masked_fraction": 0.043, "windows_resited": [], "windows_unresolved": [], "minima_resited": [ 50.0, 100.0 ], "minima_unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.396, "obstruction_max_height_m": 24.93, "flagged_windows_m": [ 2, 3, 5 ] }, "excluded_ranges_m": [ [ 0.0, 20.0 ], [ 1128.0, 1152.0 ], [ 1400.0, 1440.0 ] ], "review": [ "short_window_divergence" ], "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_E822-N6441_0m5@22LHD5NM-2025-02-27.tif", "data/cache/fr/ign-lidarhd_dtm_E822-N6442_0m5@22LHD5NM-2025-02-27.tif", "data/cache/fr/ign-lidarhd_dtm_E823-N6441_0m5@22LHD5NM-2025-02-27.tif", "data/cache/fr/ign-lidarhd_dtm_E823-N6442_0m5@22LHD5NM-2025-02-27.tif", "data/cache/fr/ign-lidarhd_dtm_E823-N6443_0m5@22LHD5NM-2025-02-27.tif" ], "calculated_at": "2026-09-22T14:59:20+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": [ "E822-N6441", "E822-N6442", "E823-N6441", "E823-N6442", "E823-N6443" ], "elevation_blocks": [ "22LHD5NM@2025-02-27" ], "ign_dalles": [ "LHD_FXX_0822_6442_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0822_6443_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0823_6442_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0823_6443_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0823_6444_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "22LHD5NM" ], "ign_editions": [ "2025-02-27" ], "ign_dsm_edition": { "LHD_FXX_0822_6442_MNT_O_0M50_LAMB93_IGN69": "2025-02-27", "LHD_FXX_0822_6443_MNT_O_0M50_LAMB93_IGN69": "2025-02-27", "LHD_FXX_0823_6442_MNT_O_0M50_LAMB93_IGN69": "2025-02-27", "LHD_FXX_0823_6443_MNT_O_0M50_LAMB93_IGN69": "2025-02-27", "LHD_FXX_0823_6444_MNT_O_0M50_LAMB93_IGN69": "2025-02-27" }, "climb_origin": "discovered", "structure_own_ways": 2, "structure_mask_ranges_m": [ [ 0.0, 15.0 ] ], "carriageway": { "stations": 87, "stations_resolved": 87, "width_median_m": 4.5, "width_p10_m": 2.4, "width_min_m": 1.0, "width_max_m": 8.5, "bounded_share": 0.517, "unbounded_share": 0.483, "confidence_median": 0.521, "width_median_bounded_m": 4.25, "window_m": [ 435.0, 460.0 ], "width_at_max25_m": 5.0, "window_stations": 6, "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": 87, "stations_resolved": 87, "width_median_m": 3.5, "width_p10_m": 1.25, "width_min_m": 0.5, "width_max_m": 9.75, "bounded_share": 0.943, "unbounded_share": 0.057, "confidence_median": 1.0, "width_median_bounded_m": 3.25, "window_m": [ 435.0, 460.0 ], "width_at_max25_m": 7.88, "window_stations": 6, "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": "Pailhar\u00e8s", "county": "Ard\u00e8che", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }