{ "ocl_version": "0.1.0", "name": "Chemin des Rascoux", "slug": "chemin-des-rascoux", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 25.19509377933673, "diagnostic": true, "flags": [], "start_distance_m": 101.0, "end_distance_m": 103.0, "start_elevation_m": 887.2523471034857, "end_elevation_m": 887.7562489790724, "min_gradient_pct": 0.32714399191036136 }, { "window_m": 3.0, "max_gradient_pct": 24.721370921721093, "diagnostic": true, "flags": [], "start_distance_m": 101.0, "end_distance_m": 104.0, "start_elevation_m": 887.2523471034857, "end_elevation_m": 887.9939882311373, "min_gradient_pct": 0.49902718693601855 }, { "window_m": 5.0, "max_gradient_pct": 23.00892817863769, "diagnostic": false, "flags": [], "start_distance_m": 99.0, "end_distance_m": 104.0, "start_elevation_m": 886.8435418222055, "end_elevation_m": 887.9939882311373, "min_gradient_pct": 1.1133185068001694 }, { "window_m": 10.0, "max_gradient_pct": 21.083140405545464, "diagnostic": false, "flags": [], "start_distance_m": 88.0, "end_distance_m": 98.0, "start_elevation_m": 884.5891481450282, "end_elevation_m": 886.6974621855827, "min_gradient_pct": 1.5904047991625703 }, { "window_m": 20.0, "max_gradient_pct": 20.738167496389224, "diagnostic": false, "flags": [], "start_distance_m": 85.0, "end_distance_m": 105.0, "start_elevation_m": 884.0276159678016, "end_elevation_m": 888.1752494670794, "min_gradient_pct": 2.7165232377450366 }, { "window_m": 25.0, "max_gradient_pct": 20.191703749919725, "diagnostic": false, "flags": [], "start_distance_m": 83.0, "end_distance_m": 108.0, "start_elevation_m": 883.6467703754686, "end_elevation_m": 888.6946963129485, "min_gradient_pct": 3.188217292032732 }, { "window_m": 50.0, "max_gradient_pct": 19.390661077384266, "diagnostic": false, "flags": [], "start_distance_m": 56.0, "end_distance_m": 106.0, "start_elevation_m": 878.6796084995854, "end_elevation_m": 888.3749390382775, "min_gradient_pct": 4.498097872441349 }, { "window_m": 100.0, "max_gradient_pct": 17.297709193114656, "diagnostic": false, "flags": [], "start_distance_m": 8.0, "end_distance_m": 108.0, "start_elevation_m": 871.3969871198339, "end_elevation_m": 888.6946963129485, "min_gradient_pct": 6.445807400537092 } ], "shape": { "ascent_concentration": 0.386, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 142.0, "shape_class": "sustained" }, "length_m": 368.1555319984528, "start_elevation_m": 870.2527537047963, "end_elevation_m": 912.3395509267508, "endpoint_gain_m": 42.0867972219545, "overall_gradient_pct": 11.43179812985436, "accumulated_ascent_m": 42.08808980089054, "window_maxima": { "max_5m": { "gradient_pct": 23.00892817863769, "start_distance_m": 99.0, "end_distance_m": 104.0, "midpoint_distance_m": 101.5, "start_elevation_m": 886.8435418222055, "end_elevation_m": 887.9939882311373, "start_xy": [ 777740.898625918, 6427488.955146345 ], "end_xy": [ 777741.3379347064, 6427493.935809734 ] }, "max_10m": { "gradient_pct": 21.083140405545464, "start_distance_m": 88.0, "end_distance_m": 98.0, "midpoint_distance_m": 93.0, "start_elevation_m": 884.5891481450282, "end_elevation_m": 886.6974621855827, "start_xy": [ 777741.1878379732, 6427478.033801486 ], "end_xy": [ 777740.8107641602, 6427487.959013668 ] }, "max_20m": { "gradient_pct": 20.738167496389224, "start_distance_m": 85.0, "end_distance_m": 105.0, "midpoint_distance_m": 95.0, "start_elevation_m": 884.0276159678016, "end_elevation_m": 888.1752494670794, "start_xy": [ 777741.6227424574, 6427475.065492525 ], "end_xy": [ 777741.4257964641, 6427494.931942412 ] }, "max_25m": { "gradient_pct": 20.191703749919725, "start_distance_m": 83.0, "end_distance_m": 108.0, "midpoint_distance_m": 95.5, "start_elevation_m": 883.6467703754686, "end_elevation_m": 888.6946963129485, "start_xy": [ 777741.9126787802, 6427473.086619884 ], "end_xy": [ 777742.8088252185, 6427497.41418653 ] }, "max_50m": { "gradient_pct": 19.390661077384266, "start_distance_m": 56.0, "end_distance_m": 106.0, "midpoint_distance_m": 81.0, "start_elevation_m": 878.6796084995854, "end_elevation_m": 888.3749390382775, "start_xy": [ 777745.8503417668, 6427446.375301389 ], "end_xy": [ 777741.5136582217, 6427495.928075089 ] }, "max_100m": { "gradient_pct": 17.297709193114656, "start_distance_m": 8.0, "end_distance_m": 108.0, "midpoint_distance_m": 58.0, "start_elevation_m": 871.3969871198339, "end_elevation_m": 888.6946963129485, "start_xy": [ 777752.0374801571, 6427398.92645761 ], "end_xy": [ 777742.8088252185, 6427497.41418653 ] } }, "window_minima": { "min_5m": { "gradient_pct": 1.1133185068001694, "start_distance_m": 304.0, "end_distance_m": 309.0, "midpoint_distance_m": 306.5, "start_elevation_m": 907.9058101008088, "end_elevation_m": 907.9614760261488, "start_xy": [ 777875.4240813844, 6427641.536481935 ], "end_xy": [ 777878.209169511, 6427645.688985291 ] }, "min_10m": { "gradient_pct": 1.5904047991625703, "start_distance_m": 304.0, "end_distance_m": 314.0, "midpoint_distance_m": 309.0, "start_elevation_m": 907.9058101008088, "end_elevation_m": 908.0648505807251, "start_xy": [ 777875.4240813844, 6427641.536481935 ], "end_xy": [ 777880.9942576375, 6427649.841488648 ] }, "min_20m": { "gradient_pct": 2.7165232377450366, "start_distance_m": 298.0, "end_distance_m": 318.0, "midpoint_distance_m": 308.0, "start_elevation_m": 907.6399118708259, "end_elevation_m": 908.1832165183749, "start_xy": [ 777872.0819756326, 6427636.553477907 ], "end_xy": [ 777882.0671838246, 6427653.68845031 ] }, "min_25m": { "gradient_pct": 3.188217292032732, "start_distance_m": 293.0, "end_distance_m": 318.0, "midpoint_distance_m": 305.5, "start_elevation_m": 907.3861621953668, "end_elevation_m": 908.1832165183749, "start_xy": [ 777868.9748994128, 6427632.641838392 ], "end_xy": [ 777882.0671838246, 6427653.68845031 ] }, "min_50m": { "gradient_pct": 4.498097872441349, "start_distance_m": 272.0, "end_distance_m": 322.0, "midpoint_distance_m": 297.0, "start_elevation_m": 906.1836567492506, "end_elevation_m": 908.4327056854713, "start_xy": [ 777855.5475250146, 6427616.495457473 ], "end_xy": [ 777883.1044388614, 6427657.55162284 ] }, "min_100m": { "gradient_pct": 6.445807400537092, "start_distance_m": 267.0, "end_distance_m": 367.0, "midpoint_distance_m": 317.0, "start_elevation_m": 905.814921980796, "end_elevation_m": 912.2607293813331, "start_xy": [ 777852.3505311103, 6427612.651081065 ], "end_xy": [ 777899.4746406154, 6427698.558154252 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 25.19509377933673, "start_distance_m": 101.0, "end_distance_m": 103.0, "midpoint_distance_m": 102.0, "start_elevation_m": 887.2523471034857, "end_elevation_m": 887.7562489790724, "start_xy": [ 777741.0743494333, 6427490.947411701 ], "end_xy": [ 777741.2500729486, 6427492.939677056 ] }, "max_3m": { "gradient_pct": 24.721370921721093, "start_distance_m": 101.0, "end_distance_m": 104.0, "midpoint_distance_m": 102.5, "start_elevation_m": 887.2523471034857, "end_elevation_m": 887.9939882311373, "start_xy": [ 777741.0743494333, 6427490.947411701 ], "end_xy": [ 777741.3379347064, 6427493.935809734 ] } }, "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": 0.081, "obstruction_max_height_m": 9.26, "flagged_windows_m": [] }, "review": [], "extent": [ "may_start_earlier", "may_continue_beyond_end" ] }, "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_E777-N6427_0m5@21LHD4MN-2024-12-13.tif" ], "calculated_at": "2026-09-22T18:30:21+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": [ "E777-N6427" ], "elevation_blocks": [ "21LHD4MN@2024-12-13" ], "ign_dalles": [ "LHD_FXX_0777_6428_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD4MN" ], "ign_editions": [ "2024-12-13" ], "ign_dsm_edition": { "LHD_FXX_0777_6428_MNT_O_0M50_LAMB93_IGN69": "2024-12-13" }, "climb_origin": "discovered", "structure_own_ways": 1, "carriageway": { "stations": 21, "stations_resolved": 21, "width_median_m": 5.5, "width_p10_m": 4.25, "width_min_m": 3.5, "width_max_m": 12.0, "bounded_share": 0.0, "unbounded_share": 1.0, "confidence_median": 0.0, "window_m": [ 83.0, 108.0 ], "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": 21, "stations_resolved": 21, "width_median_m": 8.0, "width_p10_m": 6.75, "width_min_m": 1.0, "width_max_m": 12.0, "bounded_share": 0.524, "unbounded_share": 0.476, "confidence_median": 1.0, "width_median_bounded_m": 7.5, "window_m": [ 83.0, 108.0 ], "width_at_max25_m": 8.25, "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": "Le Monastier-sur-Gazeille", "county": "Haute-Loire", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }