{ "ocl_version": "0.1.0", "name": "Chemin de Saint-Roc", "slug": "chemin-de-saint-roc", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 40.36901466528491, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 390.0, "end_distance_m": 392.0, "start_elevation_m": 71.00272924435541, "end_elevation_m": 71.8101095376611, "min_gradient_pct": -6.608645676322666 }, { "window_m": 3.0, "max_gradient_pct": 35.88553909729626, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 394.0, "end_distance_m": 397.0, "start_elevation_m": 72.25765920729367, "end_elevation_m": 73.33422538021256, "min_gradient_pct": -5.320756924425041 }, { "window_m": 5.0, "max_gradient_pct": 33.25308983900186, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 393.0, "end_distance_m": 398.0, "start_elevation_m": 71.95697384339752, "end_elevation_m": 73.61962833534761, "min_gradient_pct": -2.4816050020137936 }, { "window_m": 10.0, "max_gradient_pct": 29.910138549585668, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 390.0, "end_distance_m": 400.0, "start_elevation_m": 71.00272924435541, "end_elevation_m": 73.99374309931397, "min_gradient_pct": -0.17861326742604433 }, { "window_m": 20.0, "max_gradient_pct": 22.283822022453705, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 389.0, "end_distance_m": 409.0, "start_elevation_m": 70.85296293430349, "end_elevation_m": 75.30972733879423, "min_gradient_pct": 1.2862744317824593 }, { "window_m": 25.0, "max_gradient_pct": 20.950566583202885, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 378.0, "end_distance_m": 403.0, "start_elevation_m": 69.24266831889688, "end_elevation_m": 74.4803099646976, "min_gradient_pct": 1.4334282800260212 }, { "window_m": 50.0, "max_gradient_pct": 18.416522853076543, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 354.0, "end_distance_m": 404.0, "start_elevation_m": 65.4171257490393, "end_elevation_m": 74.62538717557757, "min_gradient_pct": 2.409163701692833 }, { "window_m": 100.0, "max_gradient_pct": 15.476392911716744, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 316.0, "end_distance_m": 416.0, "start_elevation_m": 60.61678551592175, "end_elevation_m": 76.09317842763849, "min_gradient_pct": 3.015903670092655 } ], "shape": { "ascent_concentration": 0.31, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 133.0, "shape_class": "sustained" }, "length_m": 1207.0803035468914, "start_elevation_m": 41.320411162648846, "end_elevation_m": 148.55047608946575, "endpoint_gain_m": 107.23006492681691, "overall_gradient_pct": 8.883424293456823, "accumulated_ascent_m": 107.94654321629336, "window_maxima": { "max_5m": { "gradient_pct": 33.25308983900186, "start_distance_m": 393.0, "end_distance_m": 398.0, "midpoint_distance_m": 395.5, "start_elevation_m": 71.95697384339752, "end_elevation_m": 73.61962833534761, "start_xy": [ 834884.7297468958, 6340997.601911825 ], "end_xy": [ 834880.265868121, 6340999.849580216 ] }, "max_10m": { "gradient_pct": 29.910138549585668, "start_distance_m": 390.0, "end_distance_m": 400.0, "midpoint_distance_m": 395.0, "start_elevation_m": 71.00272924435541, "end_elevation_m": 73.99374309931397, "start_xy": [ 834887.3726876471, 6340996.182452708 ], "end_xy": [ 834878.4508392472, 6341000.689621993 ] }, "max_20m": { "gradient_pct": 22.283822022453705, "start_distance_m": 389.0, "end_distance_m": 409.0, "midpoint_distance_m": 399.0, "start_elevation_m": 70.85296293430349, "end_elevation_m": 75.30972733879423, "start_xy": [ 834888.2536678975, 6340995.709299669 ], "end_xy": [ 834869.7581763191, 6341002.654116573 ] }, "max_25m": { "gradient_pct": 20.950566583202885, "start_distance_m": 378.0, "end_distance_m": 403.0, "midpoint_distance_m": 390.5, "start_elevation_m": 69.24266831889688, "end_elevation_m": 74.4803099646976, "start_xy": [ 834897.9444506521, 6340990.504616239 ], "end_xy": [ 834875.7079329806, 6341001.879264542 ] }, "max_50m": { "gradient_pct": 18.416522853076543, "start_distance_m": 354.0, "end_distance_m": 404.0, "midpoint_distance_m": 379.0, "start_elevation_m": 65.4171257490393, "end_elevation_m": 74.62538717557757, "start_xy": [ 834906.822082772, 6340970.36672988 ], "end_xy": [ 834874.7163068703, 6341002.008406547 ] }, "max_100m": { "gradient_pct": 15.476392911716744, "start_distance_m": 316.0, "end_distance_m": 416.0, "midpoint_distance_m": 366.0, "start_elevation_m": 60.61678551592175, "end_elevation_m": 76.09317842763849, "start_xy": [ 834905.0314603951, 6340932.414517232 ], "end_xy": [ 834862.783299554, 6341003.243334603 ] } }, "window_minima": { "min_5m": { "gradient_pct": -2.4816050020137936, "start_distance_m": 988.0, "end_distance_m": 993.0, "midpoint_distance_m": 990.5, "start_elevation_m": 129.47862445452893, "end_elevation_m": 129.35454420442824, "start_xy": [ 834927.7186419321, 6341226.943912359 ], "end_xy": [ 834931.2871881353, 6341230.446086607 ] }, "min_10m": { "gradient_pct": -0.17861326742604433, "start_distance_m": 1197.0, "end_distance_m": 1207.0, "midpoint_distance_m": 1202.0, "start_elevation_m": 148.56559098656163, "end_elevation_m": 148.54772965981903, "start_xy": [ 834981.6205609875, 6341421.311190736 ], "end_xy": [ 834981.4483826532, 6341431.309708357 ] }, "min_20m": { "gradient_pct": 1.2862744317824593, "start_distance_m": 842.0, "end_distance_m": 862.0, "midpoint_distance_m": 852.0, "start_elevation_m": 113.35779373188458, "end_elevation_m": 113.61504861824108, "start_xy": [ 834882.2732092651, 6341141.130575797 ], "end_xy": [ 834892.9421940908, 6341158.027775212 ] }, "min_25m": { "gradient_pct": 1.4334282800260212, "start_distance_m": 842.0, "end_distance_m": 867.0, "midpoint_distance_m": 854.5, "start_elevation_m": 113.35779373188458, "end_elevation_m": 113.71615080189109, "start_xy": [ 834882.2732092651, 6341141.130575797 ], "end_xy": [ 834896.3334236665, 6341161.701950217 ] }, "min_50m": { "gradient_pct": 2.409163701692833, "start_distance_m": 37.0, "end_distance_m": 87.0, "midpoint_distance_m": 62.0, "start_elevation_m": 42.4258046952695, "end_elevation_m": 43.630386546115915, "start_xy": [ 834848.9683559448, 6340660.958140718 ], "end_xy": [ 834856.29072482, 6340710.385320238 ] }, "min_100m": { "gradient_pct": 3.015903670092655, "start_distance_m": 11.0, "end_distance_m": 111.0, "midpoint_distance_m": 61.0, "start_elevation_m": 41.65993774543767, "end_elevation_m": 44.67584141553032, "start_xy": [ 834842.5256500031, 6340635.805014483 ], "end_xy": [ 834861.0051947195, 6340733.917582014 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 40.36901466528491, "start_distance_m": 390.0, "end_distance_m": 392.0, "midpoint_distance_m": 391.0, "start_elevation_m": 71.00272924435541, "end_elevation_m": 71.8101095376611, "start_xy": [ 834887.3726876471, 6340996.182452708 ], "end_xy": [ 834885.6107271463, 6340997.128758786 ] }, "max_3m": { "gradient_pct": 35.88553909729626, "start_distance_m": 394.0, "end_distance_m": 397.0, "midpoint_distance_m": 395.5, "start_elevation_m": 72.25765920729367, "end_elevation_m": 73.33422538021256, "start_xy": [ 834883.8487666455, 6340998.075064864 ], "end_xy": [ 834881.1733825578, 6340999.429559328 ] } }, "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": 0.4, "obstruction_max_height_m": 12.51, "flagged_windows_m": [ 2, 3, 5, 10, 20, 25, 50, 100 ] }, "review": [], "extent": [] }, "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_E834-N6340_0m5@22LHD5NO-2025-04-22.tif", "data/cache/fr/ign-lidarhd_dtm_E834-N6341_0m5@22LHD5NO-2025-04-22.tif", "data/cache/fr/ign-lidarhd_dtm_E835-N6340_0m5@22LHD5NO-2025-04-22.tif", "data/cache/fr/ign-lidarhd_dtm_E835-N6341_0m5@22LHD5NO-2025-04-22.tif" ], "calculated_at": "2026-09-22T15:31:49+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": [ "E834-N6340", "E834-N6341", "E835-N6340", "E835-N6341" ], "elevation_blocks": [ "22LHD5NO@2025-04-22" ], "ign_dalles": [ "LHD_FXX_0834_6341_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0834_6342_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0835_6341_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0835_6342_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "22LHD5NO" ], "ign_editions": [ "2025-04-22" ], "ign_dsm_edition": { "LHD_FXX_0834_6341_MNT_O_0M50_LAMB93_IGN69": "2025-04-22", "LHD_FXX_0834_6342_MNT_O_0M50_LAMB93_IGN69": "2025-04-22", "LHD_FXX_0835_6341_MNT_O_0M50_LAMB93_IGN69": "2025-04-22", "LHD_FXX_0835_6342_MNT_O_0M50_LAMB93_IGN69": "2025-04-22" }, "climb_origin": "discovered", "structure_own_ways": 2, "carriageway": { "stations": 55, "stations_resolved": 55, "width_median_m": 4.25, "width_p10_m": 3.0, "width_min_m": 2.25, "width_max_m": 7.75, "bounded_share": 0.527, "unbounded_share": 0.473, "confidence_median": 0.518, "width_median_bounded_m": 4.25, "window_m": [ 378.0, 403.0 ], "width_at_max25_m": 3.25, "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": 55, "stations_resolved": 55, "width_median_m": 2.5, "width_p10_m": 0.5, "width_min_m": 0.5, "width_max_m": 8.75, "bounded_share": 0.927, "unbounded_share": 0.073, "confidence_median": 1.0, "width_median_bounded_m": 2.25, "window_m": [ 378.0, 403.0 ], "width_at_max25_m": 0.5, "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": "Chusclan", "county": "Gard", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }