{ "ocl_version": "0.1.0", "name": "Rue du Clos Perret", "slug": "rue-du-clos-perret", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 27.16406843927075, "diagnostic": true, "flags": [], "start_distance_m": 896.0, "end_distance_m": 898.0, "start_elevation_m": 471.86063789784635, "end_elevation_m": 472.40391926663176, "min_gradient_pct": -1.973069287626572 }, { "window_m": 3.0, "max_gradient_pct": 26.777558622224735, "diagnostic": true, "flags": [], "start_distance_m": 896.0, "end_distance_m": 899.0, "start_elevation_m": 471.86063789784635, "end_elevation_m": 472.6639646565131, "min_gradient_pct": -0.800457915259282 }, { "window_m": 5.0, "max_gradient_pct": 25.967128256515934, "diagnostic": false, "flags": [], "start_distance_m": 896.0, "end_distance_m": 901.0, "start_elevation_m": 471.86063789784635, "end_elevation_m": 473.15899431067214, "min_gradient_pct": 0.086200121861566 }, { "window_m": 10.0, "max_gradient_pct": 25.627981762598324, "diagnostic": false, "flags": [], "start_distance_m": 896.0, "end_distance_m": 906.0, "start_elevation_m": 471.86063789784635, "end_elevation_m": 474.4234360741062, "min_gradient_pct": 0.6735083453077095 }, { "window_m": 20.0, "max_gradient_pct": 24.800325654986466, "diagnostic": false, "flags": [], "start_distance_m": 891.0, "end_distance_m": 911.0, "start_elevation_m": 470.66425325441264, "end_elevation_m": 475.62431838540994, "min_gradient_pct": 0.9310541190936306 }, { "window_m": 25.0, "max_gradient_pct": 24.463609557840982, "diagnostic": false, "flags": [], "start_distance_m": 890.0, "end_distance_m": 915.0, "start_elevation_m": 470.44843687345724, "end_elevation_m": 476.5643392629175, "min_gradient_pct": 1.211424422970822 }, { "window_m": 50.0, "max_gradient_pct": 22.474186329214263, "diagnostic": false, "flags": [], "start_distance_m": 870.0, "end_distance_m": 920.0, "start_elevation_m": 466.44365245526285, "end_elevation_m": 477.68074561987, "min_gradient_pct": 1.6651916932104314 }, { "window_m": 100.0, "max_gradient_pct": 20.4940034288951, "diagnostic": false, "flags": [], "start_distance_m": 820.0, "end_distance_m": 920.0, "start_elevation_m": 457.1867421909749, "end_elevation_m": 477.68074561987, "min_gradient_pct": 2.0734293462483606 } ], "shape": { "ascent_concentration": 0.454, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 185.0, "shape_class": "stepped" }, "length_m": 920.751938571119, "start_elevation_m": 398.6159659607064, "end_elevation_m": 477.8442249487873, "endpoint_gain_m": 79.22825898808094, "overall_gradient_pct": 8.604734420764007, "accumulated_ascent_m": 79.37939703894455, "window_maxima": { "max_5m": { "gradient_pct": 25.967128256515934, "start_distance_m": 896.0, "end_distance_m": 901.0, "midpoint_distance_m": 898.5, "start_elevation_m": 471.86063789784635, "end_elevation_m": 473.15899431067214, "start_xy": [ 705629.3525885703, 6521978.0203008065 ], "end_xy": [ 705629.6480020842, 6521983.011566263 ] }, "max_10m": { "gradient_pct": 25.627981762598324, "start_distance_m": 896.0, "end_distance_m": 906.0, "midpoint_distance_m": 901.0, "start_elevation_m": 471.86063789784635, "end_elevation_m": 474.4234360741062, "start_xy": [ 705629.3525885703, 6521978.0203008065 ], "end_xy": [ 705629.943415598, 6521988.00283172 ] }, "max_20m": { "gradient_pct": 24.800325654986466, "start_distance_m": 891.0, "end_distance_m": 911.0, "midpoint_distance_m": 901.0, "start_elevation_m": 470.66425325441264, "end_elevation_m": 475.62431838540994, "start_xy": [ 705629.3037332084, 6521973.022940534 ], "end_xy": [ 705630.2388291119, 6521992.994097176 ] }, "max_25m": { "gradient_pct": 24.463609557840982, "start_distance_m": 890.0, "end_distance_m": 915.0, "midpoint_distance_m": 902.5, "start_elevation_m": 470.44843687345724, "end_elevation_m": 476.5643392629175, "start_xy": [ 705629.3134210752, 6521972.022987463 ], "end_xy": [ 705630.475159923, 6521996.987109541 ] }, "max_50m": { "gradient_pct": 22.474186329214263, "start_distance_m": 870.0, "end_distance_m": 920.0, "midpoint_distance_m": 895.0, "start_elevation_m": 466.44365245526285, "end_elevation_m": 477.68074561987, "start_xy": [ 705634.5959149934, 6521953.293718639 ], "end_xy": [ 705630.7705734369, 6522001.978374997 ] }, "max_100m": { "gradient_pct": 20.4940034288951, "start_distance_m": 820.0, "end_distance_m": 920.0, "midpoint_distance_m": 870.0, "start_elevation_m": 457.1867421909749, "end_elevation_m": 477.68074561987, "start_xy": [ 705657.6552845292, 6521908.928581178 ], "end_xy": [ 705630.7705734369, 6522001.978374997 ] } }, "window_minima": { "min_5m": { "gradient_pct": 0.086200121861566, "start_distance_m": 0.0, "end_distance_m": 5.0, "midpoint_distance_m": 2.5, "start_elevation_m": 398.6159659607064, "end_elevation_m": 398.62027596679945, "start_xy": [ 706086.35, 6521436.117 ], "end_xy": [ 706086.2291311788, 6521441.115538859 ] }, "min_10m": { "gradient_pct": 0.6735083453077095, "start_distance_m": 511.0, "end_distance_m": 521.0, "midpoint_distance_m": 516.0, "start_elevation_m": 432.1264677024634, "end_elevation_m": 432.1938185369942, "start_xy": [ 705879.5077094758, 6521801.775406058 ], "end_xy": [ 705870.020347695, 6521799.450206652 ] }, "min_20m": { "gradient_pct": 0.9310541190936306, "start_distance_m": 501.0, "end_distance_m": 521.0, "midpoint_distance_m": 511.0, "start_elevation_m": 432.00760771317545, "end_elevation_m": 432.1938185369942, "start_xy": [ 705888.668584182, 6521805.785190917 ], "end_xy": [ 705870.020347695, 6521799.450206652 ] }, "min_25m": { "gradient_pct": 1.211424422970822, "start_distance_m": 495.0, "end_distance_m": 520.0, "midpoint_distance_m": 507.5, "start_elevation_m": 431.87350982828366, "end_elevation_m": 432.17636593402636, "start_xy": [ 705894.1651090059, 6521808.191061832 ], "end_xy": [ 705871.0199062587, 6521799.420496759 ] }, "min_50m": { "gradient_pct": 1.6651916932104314, "start_distance_m": 472.0, "end_distance_m": 522.0, "midpoint_distance_m": 497.0, "start_elevation_m": 431.397331868166, "end_elevation_m": 432.22992771477124, "start_xy": [ 705915.0656854187, 6521816.902028832 ], "end_xy": [ 705869.0207891313, 6521799.4799165465 ] }, "min_100m": { "gradient_pct": 2.0734293462483606, "start_distance_m": 473.0, "end_distance_m": 573.0, "midpoint_distance_m": 523.0, "start_elevation_m": 431.42852166149027, "end_elevation_m": 433.5019510077386, "start_xy": [ 705914.3190333596, 6521817.012588522 ], "end_xy": [ 705818.7829104719, 6521801.564546999 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 27.16406843927075, "start_distance_m": 896.0, "end_distance_m": 898.0, "midpoint_distance_m": 897.0, "start_elevation_m": 471.86063789784635, "end_elevation_m": 472.40391926663176, "start_xy": [ 705629.3525885703, 6521978.0203008065 ], "end_xy": [ 705629.4707539759, 6521980.016806989 ] }, "max_3m": { "gradient_pct": 26.777558622224735, "start_distance_m": 896.0, "end_distance_m": 899.0, "midpoint_distance_m": 897.5, "start_elevation_m": 471.86063789784635, "end_elevation_m": 472.6639646565131, "start_xy": [ 705629.3525885703, 6521978.0203008065 ], "end_xy": [ 705629.5298366786, 6521981.01506008 ] } }, "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": 0.0, "obstruction_max_height_m": 0.0, "flagged_windows_m": [] }, "review": [], "extent": [ "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-mc4", "road_pbf": "block-batch-fr-mc4.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_E705-N6521_0m5@22LHD4LL-2025-07-24.tif", "data/cache/fr/ign-lidarhd_dtm_E705-N6522_0m5@22LHD4LL-2025-07-24.tif", "data/cache/fr/ign-lidarhd_dtm_E706-N6521_0m5@22LHD4LL-2025-07-24.tif" ], "calculated_at": "2026-09-22T17:07:00+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc4.osm.pbf", "osm_snapshot": "", "run_id": "fr-mc4", "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": [ "E705-N6521", "E705-N6522", "E706-N6521" ], "elevation_blocks": [ "22LHD4LL@2025-07-24" ], "ign_dalles": [ "LHD_FXX_0705_6522_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0705_6523_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0706_6522_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "22LHD4LL" ], "ign_editions": [ "2025-07-24" ], "ign_dsm_edition": { "LHD_FXX_0705_6522_MNT_O_0M50_LAMB93_IGN69": "2025-07-24", "LHD_FXX_0705_6523_MNT_O_0M50_LAMB93_IGN69": "2025-07-24", "LHD_FXX_0706_6522_MNT_O_0M50_LAMB93_IGN69": "2025-07-24" }, "climb_origin": "discovered", "structure_own_ways": 9, "carriageway": { "stations": 42, "stations_resolved": 42, "width_median_m": 8.75, "width_p10_m": 6.05, "width_min_m": 4.75, "width_max_m": 12.0, "bounded_share": 0.024, "unbounded_share": 0.976, "confidence_median": 0.0, "width_median_bounded_m": 8.75, "window_m": [ 890.0, 915.0 ], "width_at_max25_m": 7.25, "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": 42, "stations_resolved": 42, "width_median_m": 10.62, "width_p10_m": 8.25, "width_min_m": 7.0, "width_max_m": 12.0, "bounded_share": 0.262, "unbounded_share": 0.738, "confidence_median": 0.0, "width_median_bounded_m": 8.5, "window_m": [ 890.0, 915.0 ], "width_at_max25_m": 9.62, "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": "Clermont-Ferrand", "county": "Puy-de-D\u00f4me", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }