{ "ocl_version": "0.1.0", "name": "Chemin des Moulins", "slug": "chemin-des-moulins", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 27.259865594015764, "diagnostic": true, "flags": [], "start_distance_m": 504.0, "end_distance_m": 506.0, "start_elevation_m": 154.1535416765788, "end_elevation_m": 154.69873898845913, "min_gradient_pct": -12.607361182698185 }, { "window_m": 3.0, "max_gradient_pct": 27.01925661193722, "diagnostic": true, "flags": [], "start_distance_m": 503.0, "end_distance_m": 506.0, "start_elevation_m": 153.888161290101, "end_elevation_m": 154.69873898845913, "min_gradient_pct": -12.328863594570786 }, { "window_m": 5.0, "max_gradient_pct": 25.87868381479609, "diagnostic": false, "flags": [], "start_distance_m": 501.0, "end_distance_m": 506.0, "start_elevation_m": 153.40480479771932, "end_elevation_m": 154.69873898845913, "min_gradient_pct": -11.915740893073234 }, { "window_m": 10.0, "max_gradient_pct": 25.41378690806539, "diagnostic": false, "flags": [], "start_distance_m": 497.0, "end_distance_m": 507.0, "start_elevation_m": 152.39376247124991, "end_elevation_m": 154.93514116205645, "min_gradient_pct": -11.78860158000532 }, { "window_m": 20.0, "max_gradient_pct": 23.2457876780866, "diagnostic": false, "flags": [], "start_distance_m": 493.0, "end_distance_m": 513.0, "start_elevation_m": 151.5602390588715, "end_elevation_m": 156.20939659448882, "min_gradient_pct": -11.181352319670168 }, { "window_m": 25.0, "max_gradient_pct": 22.112380188700854, "diagnostic": false, "flags": [], "start_distance_m": 492.0, "end_distance_m": 517.0, "start_elevation_m": 151.3862852494507, "end_elevation_m": 156.91438029662592, "min_gradient_pct": -10.636883114299621 }, { "window_m": 50.0, "max_gradient_pct": 20.99825111721509, "diagnostic": false, "flags": [], "start_distance_m": 467.0, "end_distance_m": 517.0, "start_elevation_m": 146.41525473801838, "end_elevation_m": 156.91438029662592, "min_gradient_pct": -6.469829763067821 }, { "window_m": 100.0, "max_gradient_pct": 18.65921618080469, "diagnostic": false, "flags": [], "start_distance_m": 423.0, "end_distance_m": 523.0, "start_elevation_m": 139.1413986019067, "end_elevation_m": 157.8006147827114, "min_gradient_pct": -0.1410947009992185 } ], "shape": { "ascent_concentration": 0.507, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 115.0, "shape_class": "stepped" }, "length_m": 987.7950484697036, "start_elevation_m": 108.38029859771845, "end_elevation_m": 173.438738439936, "endpoint_gain_m": 65.05843984221755, "overall_gradient_pct": 6.5862285848675155, "accumulated_ascent_m": 69.36480510441135, "window_maxima": { "max_5m": { "gradient_pct": 25.87868381479609, "start_distance_m": 501.0, "end_distance_m": 506.0, "midpoint_distance_m": 503.5, "start_elevation_m": 153.40480479771932, "end_elevation_m": 154.69873898845913, "start_xy": [ 721420.1490503632, 6268483.824287229 ], "end_xy": [ 721415.2759526699, 6268482.704948643 ] }, "max_10m": { "gradient_pct": 25.41378690806539, "start_distance_m": 497.0, "end_distance_m": 507.0, "midpoint_distance_m": 502.0, "start_elevation_m": 152.39376247124991, "end_elevation_m": 154.93514116205645, "start_xy": [ 721424.0475285179, 6268484.719758099 ], "end_xy": [ 721414.3013331313, 6268482.481080925 ] }, "max_20m": { "gradient_pct": 23.2457876780866, "start_distance_m": 493.0, "end_distance_m": 513.0, "midpoint_distance_m": 503.0, "start_elevation_m": 151.5602390588715, "end_elevation_m": 156.20939659448882, "start_xy": [ 721427.9460066726, 6268485.615228968 ], "end_xy": [ 721408.3207466259, 6268482.786511667 ] }, "max_25m": { "gradient_pct": 22.112380188700854, "start_distance_m": 492.0, "end_distance_m": 517.0, "midpoint_distance_m": 504.5, "start_elevation_m": 151.3862852494507, "end_elevation_m": 156.91438029662592, "start_xy": [ 721428.9206262112, 6268485.839096685 ], "end_xy": [ 721404.3291785712, 6268483.046096846 ] }, "max_50m": { "gradient_pct": 20.99825111721509, "start_distance_m": 467.0, "end_distance_m": 517.0, "midpoint_distance_m": 492.0, "start_elevation_m": 146.41525473801838, "end_elevation_m": 156.91438029662592, "start_xy": [ 721449.7411494202, 6268499.442258237 ], "end_xy": [ 721404.3291785712, 6268483.046096846 ] }, "max_100m": { "gradient_pct": 18.65921618080469, "start_distance_m": 423.0, "end_distance_m": 523.0, "midpoint_distance_m": 473.0, "start_elevation_m": 139.1413986019067, "end_elevation_m": 157.8006147827114, "start_xy": [ 721477.3762067327, 6268531.813340669 ], "end_xy": [ 721398.3418264893, 6268483.435474614 ] } }, "window_minima": { "min_5m": { "gradient_pct": -11.915740893073234, "start_distance_m": 975.0, "end_distance_m": 980.0, "midpoint_distance_m": 977.5, "start_elevation_m": 174.81344889219753, "end_elevation_m": 174.21766184754387, "start_xy": [ 721023.5362198757, 6268544.314254327 ], "end_xy": [ 721018.5826552582, 6268544.994105473 ] }, "min_10m": { "gradient_pct": -11.78860158000532, "start_distance_m": 972.0, "end_distance_m": 982.0, "midpoint_distance_m": 977.0, "start_elevation_m": 175.16747380808758, "end_elevation_m": 173.98861365008705, "start_xy": [ 721026.5090150036, 6268543.915326461 ], "end_xy": [ 721016.6012294112, 6268545.266045931 ] }, "min_20m": { "gradient_pct": -11.181352319670168, "start_distance_m": 966.0, "end_distance_m": 986.0, "midpoint_distance_m": 976.0, "start_elevation_m": 175.81044244262608, "end_elevation_m": 173.57417197869205, "start_xy": [ 721032.5087451568, 6268543.858422249 ], "end_xy": [ 721012.6383777172, 6268545.809926848 ] }, "min_25m": { "gradient_pct": -10.636883114299621, "start_distance_m": 962.0, "end_distance_m": 987.0, "midpoint_distance_m": 974.5, "start_elevation_m": 176.143034269029, "end_elevation_m": 173.48381349045408, "start_xy": [ 721036.5085652588, 6268543.820486107 ], "end_xy": [ 721011.6476647938, 6268545.945897077 ] }, "min_50m": { "gradient_pct": -6.469829763067821, "start_distance_m": 937.0, "end_distance_m": 987.0, "midpoint_distance_m": 962.0, "start_elevation_m": 176.718728371988, "end_elevation_m": 173.48381349045408, "start_xy": [ 721061.4996564696, 6268543.3095392715 ], "end_xy": [ 721011.6476647938, 6268545.945897077 ] }, "min_100m": { "gradient_pct": -0.1410947009992185, "start_distance_m": 665.0, "end_distance_m": 765.0, "midpoint_distance_m": 715.0, "start_elevation_m": 170.03805829840195, "end_elevation_m": 169.89696359740273, "start_xy": [ 721289.7309993702, 6268552.699438267 ], "end_xy": [ 721216.5505002018, 6268586.454453579 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 27.259865594015764, "start_distance_m": 504.0, "end_distance_m": 506.0, "midpoint_distance_m": 505.0, "start_elevation_m": 154.1535416765788, "end_elevation_m": 154.69873898845913, "start_xy": [ 721417.2251917472, 6268483.152684078 ], "end_xy": [ 721415.2759526699, 6268482.704948643 ] }, "max_3m": { "gradient_pct": 27.01925661193722, "start_distance_m": 503.0, "end_distance_m": 506.0, "midpoint_distance_m": 504.5, "start_elevation_m": 153.888161290101, "end_elevation_m": 154.69873898845913, "start_xy": [ 721418.199811286, 6268483.376551795 ], "end_xy": [ 721415.2759526699, 6268482.704948643 ] } }, "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": 0.078, "obstruction_max_height_m": 10.92, "flagged_windows_m": [] }, "review": [], "extent": [ "may_start_earlier", "descends_at_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-mc5", "road_pbf": "block-batch-fr-mc5.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_E720-N6268_0m5@21LHD3LQ-2025-05-19.tif", "data/cache/fr/ign-lidarhd_dtm_E721-N6268_0m5@21LHD3LQ-2025-05-19.tif" ], "calculated_at": "2026-09-22T15:13:34+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc5.osm.pbf", "osm_snapshot": "", "run_id": "fr-mc5", "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": [ "E720-N6268", "E721-N6268" ], "elevation_blocks": [ "21LHD3LQ@2025-05-19" ], "ign_dalles": [ "LHD_FXX_0720_6269_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0721_6269_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD3LQ" ], "ign_editions": [ "2025-05-19" ], "ign_dsm_edition": { "LHD_FXX_0720_6269_MNT_O_0M50_LAMB93_IGN69": "2025-05-19", "LHD_FXX_0721_6269_MNT_O_0M50_LAMB93_IGN69": "2025-05-19" }, "climb_origin": "discovered", "structure_own_ways": 2, "carriageway": { "stations": 46, "stations_resolved": 46, "width_median_m": 4.5, "width_p10_m": 2.25, "width_min_m": 1.0, "width_max_m": 12.0, "bounded_share": 0.413, "unbounded_share": 0.587, "confidence_median": 0.0, "width_median_bounded_m": 2.75, "window_m": [ 492.0, 517.0 ], "width_at_max25_m": 2.75, "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": 46, "stations_resolved": 46, "width_median_m": 5.88, "width_p10_m": 1.88, "width_min_m": 1.0, "width_max_m": 12.0, "bounded_share": 0.652, "unbounded_share": 0.348, "confidence_median": 1.0, "width_median_bounded_m": 4.12, "window_m": [ 492.0, 517.0 ], "width_at_max25_m": 4.5, "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": "Gabian", "county": "H\u00e9rault", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }