{ "ocl_version": "0.1.0", "name": "Chemin du Collet Saint Pierre", "slug": "chemin-du-collet-saint-pierre", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 26.87331124388237, "diagnostic": true, "flags": [], "start_distance_m": 1345.0, "end_distance_m": 1347.0, "start_elevation_m": 144.1592999483334, "end_elevation_m": 144.69676617321105, "min_gradient_pct": -23.752630472348812 }, { "window_m": 3.0, "max_gradient_pct": 26.167823572521343, "diagnostic": true, "flags": [], "start_distance_m": 1319.0, "end_distance_m": 1322.0, "start_elevation_m": 139.0316035760407, "end_elevation_m": 139.81663828321635, "min_gradient_pct": -22.36834260621426 }, { "window_m": 5.0, "max_gradient_pct": 24.964768239206023, "diagnostic": false, "flags": [], "start_distance_m": 1319.0, "end_distance_m": 1324.0, "start_elevation_m": 139.0316035760407, "end_elevation_m": 140.279841988001, "min_gradient_pct": -21.53799931648706 }, { "window_m": 10.0, "max_gradient_pct": 22.659546645137993, "diagnostic": false, "flags": [], "start_distance_m": 1314.0, "end_distance_m": 1324.0, "start_elevation_m": 138.0138873234872, "end_elevation_m": 140.279841988001, "min_gradient_pct": -20.97935098517226 }, { "window_m": 20.0, "max_gradient_pct": 21.079049355583948, "diagnostic": false, "flags": [], "start_distance_m": 1304.0, "end_distance_m": 1324.0, "start_elevation_m": 136.06403211688422, "end_elevation_m": 140.279841988001, "min_gradient_pct": -20.054308829959595 }, { "window_m": 25.0, "max_gradient_pct": 20.515735162808937, "diagnostic": false, "flags": [], "start_distance_m": 1302.0, "end_distance_m": 1327.0, "start_elevation_m": 135.68990963495656, "end_elevation_m": 140.8188434256588, "min_gradient_pct": -19.361016290641714 }, { "window_m": 50.0, "max_gradient_pct": 19.80438078948623, "diagnostic": false, "flags": [], "start_distance_m": 1299.0, "end_distance_m": 1349.0, "start_elevation_m": 135.16547349013732, "end_elevation_m": 145.06766388488043, "min_gradient_pct": -15.528930378543778 }, { "window_m": 100.0, "max_gradient_pct": 17.365860630838768, "diagnostic": false, "flags": [], "start_distance_m": 1252.0, "end_distance_m": 1352.0, "start_elevation_m": 128.1464345001919, "end_elevation_m": 145.51229513103067, "min_gradient_pct": -10.879842820508884 } ], "shape": { "ascent_concentration": 0.459, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 251.0, "shape_class": "stepped" }, "length_m": 1663.1165654237986, "start_elevation_m": 56.557051408198895, "end_elevation_m": 177.6656234623845, "endpoint_gain_m": 121.1085720541856, "overall_gradient_pct": 7.282025479875157, "accumulated_ascent_m": 133.28951197125164, "window_maxima": { "max_5m": { "gradient_pct": 24.964768239206023, "start_distance_m": 1319.0, "end_distance_m": 1324.0, "midpoint_distance_m": 1321.5, "start_elevation_m": 139.0316035760407, "end_elevation_m": 140.279841988001, "start_xy": [ 936476.4194833508, 6233561.413810663 ], "end_xy": [ 936478.4206832551, 6233565.786324598 ] }, "max_10m": { "gradient_pct": 22.659546645137993, "start_distance_m": 1314.0, "end_distance_m": 1324.0, "midpoint_distance_m": 1319.0, "start_elevation_m": 138.0138873234872, "end_elevation_m": 140.279841988001, "start_xy": [ 936477.2782968425, 6233556.573998234 ], "end_xy": [ 936478.4206832551, 6233565.786324598 ] }, "max_20m": { "gradient_pct": 21.079049355583948, "start_distance_m": 1304.0, "end_distance_m": 1324.0, "midpoint_distance_m": 1314.0, "start_elevation_m": 136.06403211688422, "end_elevation_m": 140.279841988001, "start_xy": [ 936484.3413043418, 6233549.679815341 ], "end_xy": [ 936478.4206832551, 6233565.786324598 ] }, "max_25m": { "gradient_pct": 20.515735162808937, "start_distance_m": 1302.0, "end_distance_m": 1327.0, "midpoint_distance_m": 1314.5, "start_elevation_m": 135.68990963495656, "end_elevation_m": 140.8188434256588, "start_xy": [ 936486.0024215804, 6233548.565952907 ], "end_xy": [ 936481.0266458988, 6233567.186371378 ] }, "max_50m": { "gradient_pct": 19.80438078948623, "start_distance_m": 1299.0, "end_distance_m": 1349.0, "midpoint_distance_m": 1324.0, "start_elevation_m": 135.16547349013732, "end_elevation_m": 145.06766388488043, "start_xy": [ 936488.4940974381, 6233546.895159258 ], "end_xy": [ 936498.6535701096, 6233572.860938839 ] }, "max_100m": { "gradient_pct": 17.365860630838768, "start_distance_m": 1252.0, "end_distance_m": 1352.0, "midpoint_distance_m": 1302.0, "start_elevation_m": 128.1464345001919, "end_elevation_m": 145.51229513103067, "start_xy": [ 936491.0903281351, 6233524.897239378 ], "end_xy": [ 936497.1613435259, 6233575.377738854 ] } }, "window_minima": { "min_5m": { "gradient_pct": -21.53799931648706, "start_distance_m": 928.0, "end_distance_m": 933.0, "midpoint_distance_m": 930.5, "start_elevation_m": 114.51909425630681, "end_elevation_m": 113.44219429048246, "start_xy": [ 936724.2715129501, 6233337.887214161 ], "end_xy": [ 936719.4420489972, 6233336.603356728 ] }, "min_10m": { "gradient_pct": -20.97935098517226, "start_distance_m": 923.0, "end_distance_m": 933.0, "midpoint_distance_m": 928.0, "start_elevation_m": 115.54012938899969, "end_elevation_m": 113.44219429048246, "start_xy": [ 936729.0449297711, 6233339.372940948 ], "end_xy": [ 936719.4420489972, 6233336.603356728 ] }, "min_20m": { "gradient_pct": -20.054308829959595, "start_distance_m": 923.0, "end_distance_m": 943.0, "midpoint_distance_m": 933.0, "start_elevation_m": 115.54012938899969, "end_elevation_m": 111.52926762300777, "start_xy": [ 936729.0449297711, 6233339.372940948 ], "end_xy": [ 936709.4941334917, 6233336.104946523 ] }, "min_25m": { "gradient_pct": -19.361016290641714, "start_distance_m": 922.0, "end_distance_m": 947.0, "midpoint_distance_m": 934.5, "start_elevation_m": 115.7153415984032, "end_elevation_m": 110.87508752574277, "start_xy": [ 936729.9970306143, 6233339.678725161 ], "end_xy": [ 936705.5152046793, 6233336.508273792 ] }, "min_50m": { "gradient_pct": -15.528930378543778, "start_distance_m": 913.0, "end_distance_m": 963.0, "midpoint_distance_m": 938.0, "start_elevation_m": 116.8593122150136, "end_elevation_m": 109.09484702574171, "start_xy": [ 936738.5037987635, 6233342.61537739 ], "end_xy": [ 936690.7159490582, 6233342.262097106 ] }, "min_100m": { "gradient_pct": -10.879842820508884, "start_distance_m": 900.0, "end_distance_m": 1000.0, "midpoint_distance_m": 950.0, "start_elevation_m": 117.55764533710044, "end_elevation_m": 106.67780251659156, "start_xy": [ 936750.6616634268, 6233347.216831657 ], "end_xy": [ 936660.0044043226, 6233362.894299726 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 26.87331124388237, "start_distance_m": 1345.0, "end_distance_m": 1347.0, "midpoint_distance_m": 1346.0, "start_elevation_m": 144.1592999483334, "end_elevation_m": 144.69676617321105, "start_xy": [ 936497.9372465587, 6233569.138511147 ], "end_xy": [ 936498.7070581252, 6233570.944314376 ] }, "max_3m": { "gradient_pct": 26.167823572521343, "start_distance_m": 1319.0, "end_distance_m": 1322.0, "midpoint_distance_m": 1320.5, "start_elevation_m": 139.0316035760407, "end_elevation_m": 139.81663828321635, "start_xy": [ 936476.4194833508, 6233561.413810663 ], "end_xy": [ 936477.154792752, 6233564.322301695 ] } }, "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": 0.217, "obstruction_max_height_m": 18.86, "flagged_windows_m": [] }, "review": [], "extent": [] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "41205ec4649bb0a4093af76ff34281a5d9a13832", "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-pr5", "road_pbf": "block-batch-fr-pr5.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:ba95a0bf562c86eb" }, "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_E936-N6233_0m5@22LHDQR-2025-03-11.tif", "data/cache/fr/ign-lidarhd_dtm_E937-N6233_0m5@22LHDQR-2025-03-11.tif" ], "calculated_at": "2026-09-25T08:54:46+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-pr5.osm.pbf", "osm_snapshot": "", "run_id": "fr-pr5", "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": [ "E936-N6233", "E937-N6233" ], "elevation_blocks": [ "22LHDQR@2025-03-11" ], "ign_dalles": [ "LHD_FXX_0936_6234_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0937_6234_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "22LHDQR" ], "ign_editions": [ "2025-03-11" ], "ign_dsm_edition": { "LHD_FXX_0936_6234_MNT_O_0M50_LAMB93_IGN69": "2025-03-11", "LHD_FXX_0937_6234_MNT_O_0M50_LAMB93_IGN69": "2025-03-11" }, "climb_origin": "discovered", "structure_own_ways": 5, "carriageway": { "stations": 73, "stations_resolved": 73, "width_median_m": 5.0, "width_p10_m": 2.75, "width_min_m": 1.5, "width_max_m": 11.0, "bounded_share": 0.342, "unbounded_share": 0.658, "confidence_median": 0.0, "width_median_bounded_m": 4.5, "window_m": [ 1302.0, 1327.0 ], "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": 73, "stations_resolved": 73, "width_median_m": 3.25, "width_p10_m": 1.25, "width_min_m": 1.0, "width_max_m": 12.0, "bounded_share": 0.849, "unbounded_share": 0.151, "confidence_median": 1.0, "width_median_bounded_m": 2.75, "window_m": [ 1302.0, 1327.0 ], "width_at_max25_m": 6.75, "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": "Toulon", "county": "Var", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }