{ "ocl_version": "0.1.0", "name": "Strittonu di l'Ortulaghju", "slug": "strittonu-di-l-ortulaghju", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 23.077078839737908, "diagnostic": true, "flags": [], "start_distance_m": 344.0, "end_distance_m": 346.0, "start_elevation_m": 118.31295035777887, "end_elevation_m": 118.77449193457363, "min_gradient_pct": -11.631670613530076 }, { "window_m": 3.0, "max_gradient_pct": 22.50561574239877, "diagnostic": true, "flags": [], "start_distance_m": 344.0, "end_distance_m": 347.0, "start_elevation_m": 118.31295035777887, "end_elevation_m": 118.98811883005084, "min_gradient_pct": -10.989693571400494 }, { "window_m": 5.0, "max_gradient_pct": 22.52377771989302, "diagnostic": false, "flags": [], "start_distance_m": 344.0, "end_distance_m": 349.0, "start_elevation_m": 118.31295035777887, "end_elevation_m": 119.43913924377352, "min_gradient_pct": -10.55394921196438 }, { "window_m": 10.0, "max_gradient_pct": 22.280954674613582, "diagnostic": false, "flags": [], "start_distance_m": 344.0, "end_distance_m": 354.0, "start_elevation_m": 118.31295035777887, "end_elevation_m": 120.54104582524023, "min_gradient_pct": -9.36973952928767 }, { "window_m": 20.0, "max_gradient_pct": 21.331693903626103, "diagnostic": false, "flags": [], "start_distance_m": 338.0, "end_distance_m": 358.0, "start_elevation_m": 117.08251455588277, "end_elevation_m": 121.34885333660799, "min_gradient_pct": -7.007025872123265 }, { "window_m": 25.0, "max_gradient_pct": 20.761188080896773, "diagnostic": false, "flags": [], "start_distance_m": 335.0, "end_distance_m": 360.0, "start_elevation_m": 116.52920324564684, "end_elevation_m": 121.71950026587103, "min_gradient_pct": -5.983403581098685 }, { "window_m": 50.0, "max_gradient_pct": 18.878685343378294, "diagnostic": false, "flags": [], "start_distance_m": 325.0, "end_distance_m": 375.0, "start_elevation_m": 115.01517829507367, "end_elevation_m": 124.45452096676281, "min_gradient_pct": -1.5096436232117298 }, { "window_m": 100.0, "max_gradient_pct": 13.316293157644168, "diagnostic": false, "flags": [], "start_distance_m": 275.0, "end_distance_m": 375.0, "start_elevation_m": 111.13822780911865, "end_elevation_m": 124.45452096676281, "min_gradient_pct": 2.859189011738934 } ], "shape": { "ascent_concentration": 0.421, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 60.0, "shape_class": "sustained" }, "length_m": 375.25088796006395, "start_elevation_m": 95.52142131482216, "end_elevation_m": 124.48958819105312, "endpoint_gain_m": 28.968166876230953, "overall_gradient_pct": 7.719679767770167, "accumulated_ascent_m": 30.54950255594862, "window_maxima": { "max_5m": { "gradient_pct": 22.52377771989302, "start_distance_m": 344.0, "end_distance_m": 349.0, "midpoint_distance_m": 346.5, "start_elevation_m": 118.31295035777887, "end_elevation_m": 119.43913924377352, "start_xy": [ 1220781.2734996537, 6079405.301894049 ], "end_xy": [ 1220777.7781590282, 6079408.877169411 ] }, "max_10m": { "gradient_pct": 22.280954674613582, "start_distance_m": 344.0, "end_distance_m": 354.0, "midpoint_distance_m": 349.0, "start_elevation_m": 118.31295035777887, "end_elevation_m": 120.54104582524023, "start_xy": [ 1220781.2734996537, 6079405.301894049 ], "end_xy": [ 1220774.2828184029, 6079412.452444772 ] }, "max_20m": { "gradient_pct": 21.331693903626103, "start_distance_m": 338.0, "end_distance_m": 358.0, "midpoint_distance_m": 348.0, "start_elevation_m": 117.08251455588277, "end_elevation_m": 121.34885333660799, "start_xy": [ 1220785.7081543917, 6079401.341974358 ], "end_xy": [ 1220771.4865459024, 6079415.312665062 ] }, "max_25m": { "gradient_pct": 20.761188080896773, "start_distance_m": 335.0, "end_distance_m": 360.0, "midpoint_distance_m": 347.5, "start_elevation_m": 116.52920324564684, "end_elevation_m": 121.71950026587103, "start_xy": [ 1220788.395404413, 6079400.008299989 ], "end_xy": [ 1220770.0884096522, 6079416.742775206 ] }, "max_50m": { "gradient_pct": 18.878685343378294, "start_distance_m": 325.0, "end_distance_m": 375.0, "midpoint_distance_m": 350.0, "start_elevation_m": 115.01517829507367, "end_elevation_m": 124.45452096676281, "start_xy": [ 1220797.5342217728, 6079395.991991595 ], "end_xy": [ 1220759.6023877757, 6079427.468601292 ] }, "max_100m": { "gradient_pct": 13.316293157644168, "start_distance_m": 275.0, "end_distance_m": 375.0, "midpoint_distance_m": 325.0, "start_elevation_m": 111.13822780911865, "end_elevation_m": 124.45452096676281, "start_xy": [ 1220844.171840565, 6079411.775837663 ], "end_xy": [ 1220759.6023877757, 6079427.468601292 ] } }, "window_minima": { "min_5m": { "gradient_pct": -10.55394921196438, "start_distance_m": 215.0, "end_distance_m": 220.0, "midpoint_distance_m": 217.5, "start_elevation_m": 109.53755489657141, "end_elevation_m": 109.00985743597319, "start_xy": [ 1220894.1947014385, 6079443.621213061 ], "end_xy": [ 1220890.59964879, 6079440.146217167 ] }, "min_10m": { "gradient_pct": -9.36973952928767, "start_distance_m": 212.0, "end_distance_m": 222.0, "midpoint_distance_m": 217.0, "start_elevation_m": 109.76905362217121, "end_elevation_m": 108.83207966924245, "start_xy": [ 1220896.3517330277, 6079445.7062105965 ], "end_xy": [ 1220889.1616277306, 6079438.756218811 ] }, "min_20m": { "gradient_pct": -7.007025872123265, "start_distance_m": 206.0, "end_distance_m": 226.0, "midpoint_distance_m": 216.0, "start_elevation_m": 110.02707391453066, "end_elevation_m": 108.62566874010601, "start_xy": [ 1220900.6657962059, 6079449.876205667 ], "end_xy": [ 1220886.2855856118, 6079435.976222097 ] }, "min_25m": { "gradient_pct": -5.983403581098685, "start_distance_m": 204.0, "end_distance_m": 229.0, "midpoint_distance_m": 216.5, "start_elevation_m": 110.06866105834006, "end_elevation_m": 108.57281016306538, "start_xy": [ 1220902.1038172652, 6079451.266204025 ], "end_xy": [ 1220884.1285540226, 6079433.891224561 ] }, "min_50m": { "gradient_pct": -1.5096436232117298, "start_distance_m": 200.0, "end_distance_m": 250.0, "midpoint_distance_m": 225.0, "start_elevation_m": 109.96675876333248, "end_elevation_m": 109.21193695172661, "start_xy": [ 1220904.9798593842, 6079454.046200738 ], "end_xy": [ 1220866.99943871, 6079421.903363285 ] }, "min_100m": { "gradient_pct": 2.859189011738934, "start_distance_m": 198.0, "end_distance_m": 298.0, "midpoint_distance_m": 248.0, "start_elevation_m": 109.8468709427613, "end_elevation_m": 112.70605995450023, "start_xy": [ 1220906.4178804436, 6079455.436199096 ], "end_xy": [ 1220823.0054449074, 6079402.776743549 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 23.077078839737908, "start_distance_m": 344.0, "end_distance_m": 346.0, "midpoint_distance_m": 345.0, "start_elevation_m": 118.31295035777887, "end_elevation_m": 118.77449193457363, "start_xy": [ 1220781.2734996537, 6079405.301894049 ], "end_xy": [ 1220779.8753634035, 6079406.732004194 ] }, "max_3m": { "gradient_pct": 22.50561574239877, "start_distance_m": 344.0, "end_distance_m": 347.0, "midpoint_distance_m": 345.5, "start_elevation_m": 118.31295035777887, "end_elevation_m": 118.98811883005084, "start_xy": [ 1220781.2734996537, 6079405.301894049 ], "end_xy": [ 1220779.1762952784, 6079407.447059266 ] } }, "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": 0.268, "obstruction_max_height_m": 8.82, "flagged_windows_m": [] }, "review": [], "extent": [ "may_continue_beyond_end" ] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "33abfff569d4360542e616d0d42c1b94d0a711fa", "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-co3", "road_pbf": "block-batch-fr-co3.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": "sha256:2a717d675f2607cc" }, "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_E1220-N6079_0m5@21LHDCorseVU-2025-04-02.tif", "data/cache/fr/ign-lidarhd_dtm_E1221-N6079_0m5@21LHDCorseVU-2025-04-02.tif" ], "calculated_at": "2026-09-25T00:49:20+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-co3.osm.pbf", "osm_snapshot": "", "run_id": "fr-co3", "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": [ "E1220-N6079", "E1221-N6079" ], "elevation_blocks": [ "21LHDCorseVU@2025-04-02" ], "ign_dalles": [ "LHD_FXX_1220_6080_MNT_O_0M50_LAMB93_IGN78", "LHD_FXX_1221_6080_MNT_O_0M50_LAMB93_IGN78" ], "ign_missions": [ "21LHDCorseVU" ], "ign_editions": [ "2025-04-02" ], "ign_dsm_edition": { "LHD_FXX_1220_6080_MNT_O_0M50_LAMB93_IGN78": "2025-04-02", "LHD_FXX_1221_6080_MNT_O_0M50_LAMB93_IGN78": "2025-04-02" }, "climb_origin": "discovered", "structure_own_ways": 1, "carriageway": { "stations": 21, "stations_resolved": 21, "width_median_m": 5.0, "width_p10_m": 4.0, "width_min_m": 2.5, "width_max_m": 12.0, "bounded_share": 0.333, "unbounded_share": 0.667, "confidence_median": 0.0, "width_median_bounded_m": 5.0, "window_m": [ 335.0, 360.0 ], "width_at_max25_m": 4.88, "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": 21, "stations_resolved": 21, "width_median_m": 3.5, "width_p10_m": 1.0, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.905, "unbounded_share": 0.095, "confidence_median": 1.0, "width_median_bounded_m": 2.5, "window_m": [ 335.0, 360.0 ], "width_at_max25_m": 3.0, "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": "Porto-Vecchio", "county": "Corse-du-Sud", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }