{ "ocl_version": "0.1.0", "name": "Chemin le Vorle", "slug": "chemin-le-vorle", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 26.983005356640888, "diagnostic": true, "flags": [], "start_distance_m": 187.0, "end_distance_m": 189.0, "start_elevation_m": 765.337850197952, "end_elevation_m": 765.8775103050848, "min_gradient_pct": -13.083099978325663 }, { "window_m": 3.0, "max_gradient_pct": 26.470542550267357, "diagnostic": true, "flags": [], "start_distance_m": 185.0, "end_distance_m": 188.0, "start_elevation_m": 764.8168226287471, "end_elevation_m": 765.6109389052551, "min_gradient_pct": -12.466180859511647 }, { "window_m": 5.0, "max_gradient_pct": 26.072157689213782, "diagnostic": false, "flags": [], "start_distance_m": 184.0, "end_distance_m": 189.0, "start_elevation_m": 764.5739024206241, "end_elevation_m": 765.8775103050848, "min_gradient_pct": -12.39213446984877 }, { "window_m": 10.0, "max_gradient_pct": 25.382970886801104, "diagnostic": false, "flags": [], "start_distance_m": 179.0, "end_distance_m": 189.0, "start_elevation_m": 763.3392132164047, "end_elevation_m": 765.8775103050848, "min_gradient_pct": -12.025359493122778 }, { "window_m": 20.0, "max_gradient_pct": 23.5289739645674, "diagnostic": false, "flags": [], "start_distance_m": 172.0, "end_distance_m": 192.0, "start_elevation_m": 761.8573198298803, "end_elevation_m": 766.5631146227938, "min_gradient_pct": -11.36393008108655 }, { "window_m": 25.0, "max_gradient_pct": 22.642861504144093, "diagnostic": false, "flags": [], "start_distance_m": 167.0, "end_distance_m": 192.0, "start_elevation_m": 760.9023992467578, "end_elevation_m": 766.5631146227938, "min_gradient_pct": -11.101461498612935 }, { "window_m": 50.0, "max_gradient_pct": 20.408496566440135, "diagnostic": false, "flags": [], "start_distance_m": 142.0, "end_distance_m": 192.0, "start_elevation_m": 756.3588663395738, "end_elevation_m": 766.5631146227938, "min_gradient_pct": -10.83371101126886 }, { "window_m": 100.0, "max_gradient_pct": 19.050632153133733, "diagnostic": false, "flags": [], "start_distance_m": 0.0, "end_distance_m": 100.0, "start_elevation_m": 729.8498281425565, "end_elevation_m": 748.9004602956902, "min_gradient_pct": -8.816555712707668 } ], "shape": { "ascent_concentration": 0.459, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 199.0, "shape_class": "stepped" }, "length_m": 1221.643190904885, "start_elevation_m": 729.8498281425565, "end_elevation_m": 812.1960607577905, "endpoint_gain_m": 82.34623261523404, "overall_gradient_pct": 6.740612416808811, "accumulated_ascent_m": 93.5261276195721, "window_maxima": { "max_5m": { "gradient_pct": 26.072157689213782, "start_distance_m": 184.0, "end_distance_m": 189.0, "midpoint_distance_m": 186.5, "start_elevation_m": 764.5739024206241, "end_elevation_m": 765.8775103050848, "start_xy": [ 769311.6912178083, 6545901.112132106 ], "end_xy": [ 769310.9204861586, 6545906.052372254 ] }, "max_10m": { "gradient_pct": 25.382970886801104, "start_distance_m": 179.0, "end_distance_m": 189.0, "midpoint_distance_m": 184.0, "start_elevation_m": 763.3392132164047, "end_elevation_m": 765.8775103050848, "start_xy": [ 769312.0804528566, 6545896.144977293 ], "end_xy": [ 769310.9204861586, 6545906.052372254 ] }, "max_20m": { "gradient_pct": 23.5289739645674, "start_distance_m": 172.0, "end_distance_m": 192.0, "midpoint_distance_m": 182.0, "start_elevation_m": 761.8573198298803, "end_elevation_m": 766.5631146227938, "start_xy": [ 769311.9831812826, 6545889.145653165 ], "end_xy": [ 769310.4580471688, 6545909.016516344 ] }, "max_25m": { "gradient_pct": 22.642861504144093, "start_distance_m": 167.0, "end_distance_m": 192.0, "midpoint_distance_m": 179.5, "start_elevation_m": 760.9023992467578, "end_elevation_m": 766.5631146227938, "start_xy": [ 769311.9137015869, 6545884.146135932 ], "end_xy": [ 769310.4580471688, 6545909.016516344 ] }, "max_50m": { "gradient_pct": 20.408496566440135, "start_distance_m": 142.0, "end_distance_m": 192.0, "midpoint_distance_m": 167.0, "start_elevation_m": 756.3588663395738, "end_elevation_m": 766.5631146227938, "start_xy": [ 769309.4256247715, 6545859.279540149 ], "end_xy": [ 769310.4580471688, 6545909.016516344 ] }, "max_100m": { "gradient_pct": 19.050632153133733, "start_distance_m": 0.0, "end_distance_m": 100.0, "midpoint_distance_m": 50.0, "start_elevation_m": 729.8498281425565, "end_elevation_m": 748.9004602956902, "start_xy": [ 769282.574, 6545720.988 ], "end_xy": [ 769303.5401750141, 6545817.712171404 ] } }, "window_minima": { "min_5m": { "gradient_pct": -12.39213446984877, "start_distance_m": 647.0, "end_distance_m": 652.0, "midpoint_distance_m": 649.5, "start_elevation_m": 774.824316924297, "end_elevation_m": 774.2047102008046, "start_xy": [ 769463.3758285746, 6546210.789104519 ], "end_xy": [ 769466.3105168595, 6546214.824010589 ] }, "min_10m": { "gradient_pct": -12.025359493122778, "start_distance_m": 646.0, "end_distance_m": 656.0, "midpoint_distance_m": 651.0, "start_elevation_m": 774.9477585769496, "end_elevation_m": 773.7452226276373, "start_xy": [ 769462.852705408, 6546209.9463026365 ], "end_xy": [ 769469.1111788797, 6546217.679932901 ] }, "min_20m": { "gradient_pct": -11.36393008108655, "start_distance_m": 639.0, "end_distance_m": 659.0, "midpoint_distance_m": 649.0, "start_elevation_m": 775.7031025743547, "end_elevation_m": 773.4303165581374, "start_xy": [ 769461.5069371604, 6546203.076884333 ], "end_xy": [ 769471.2116753949, 6546219.821874634 ] }, "min_25m": { "gradient_pct": -11.101461498612935, "start_distance_m": 634.0, "end_distance_m": 659.0, "midpoint_distance_m": 646.5, "start_elevation_m": 776.2056819327906, "end_elevation_m": 773.4303165581374, "start_xy": [ 769460.5456741264, 6546198.170156974 ], "end_xy": [ 769471.2116753949, 6546219.821874634 ] }, "min_50m": { "gradient_pct": -10.83371101126886, "start_distance_m": 604.0, "end_distance_m": 654.0, "midpoint_distance_m": 629.0, "start_elevation_m": 779.3854841086779, "end_elevation_m": 773.9686286030435, "start_xy": [ 769469.2294801385, 6546169.575644118 ], "end_xy": [ 769467.7108478696, 6546216.251971745 ] }, "min_100m": { "gradient_pct": -8.816555712707668, "start_distance_m": 565.0, "end_distance_m": 665.0, "midpoint_distance_m": 615.0, "start_elevation_m": 781.8144583235576, "end_elevation_m": 772.9979026108499, "start_xy": [ 769452.2322360714, 6546138.476487953 ], "end_xy": [ 769475.4126684251, 6546224.105758102 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 26.983005356640888, "start_distance_m": 187.0, "end_distance_m": 189.0, "midpoint_distance_m": 188.0, "start_elevation_m": 765.337850197952, "end_elevation_m": 765.8775103050848, "start_xy": [ 769311.2287788185, 6545904.076276195 ], "end_xy": [ 769310.9204861586, 6545906.052372254 ] }, "max_3m": { "gradient_pct": 26.470542550267357, "start_distance_m": 185.0, "end_distance_m": 188.0, "midpoint_distance_m": 186.5, "start_elevation_m": 764.8168226287471, "end_elevation_m": 765.6109389052551, "start_xy": [ 769311.5370714783, 6545902.100180135 ], "end_xy": [ 769311.0746324885, 6545905.064324224 ] } }, "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": 0.023, "obstruction_max_height_m": 13.65, "flagged_windows_m": [] }, "review": [], "extent": [ "may_start_earlier" ] }, "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-mc6", "road_pbf": "block-batch-fr-mc6.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_E769-N6545_0m5@23LHDMK-2025-01-14.tif", "data/cache/fr/ign-lidarhd_dtm_E769-N6546_0m5@23LHDMK-2025-01-14.tif" ], "calculated_at": "2026-09-22T16:55:01+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc6.osm.pbf", "osm_snapshot": "", "run_id": "fr-mc6", "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": [ "E769-N6545", "E769-N6546" ], "elevation_blocks": [ "23LHDMK@2025-01-14" ], "ign_dalles": [ "LHD_FXX_0769_6546_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0769_6547_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "23LHDMK" ], "ign_editions": [ "2025-01-14" ], "ign_dsm_edition": { "LHD_FXX_0769_6546_MNT_O_0M50_LAMB93_IGN69": "2025-01-14", "LHD_FXX_0769_6547_MNT_O_0M50_LAMB93_IGN69": "2025-01-14" }, "climb_origin": "discovered", "structure_own_ways": 4, "carriageway": { "stations": 55, "stations_resolved": 55, "width_median_m": 4.75, "width_p10_m": 3.5, "width_min_m": 3.0, "width_max_m": 10.75, "bounded_share": 0.473, "unbounded_share": 0.527, "confidence_median": 0.0, "width_median_bounded_m": 4.0, "window_m": [ 167.0, 192.0 ], "width_at_max25_m": 4.0, "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": 55, "stations_resolved": 55, "width_median_m": 7.25, "width_p10_m": 4.5, "width_min_m": 1.5, "width_max_m": 12.0, "bounded_share": 0.673, "unbounded_share": 0.327, "confidence_median": 1.0, "width_median_bounded_m": 5.75, "window_m": [ 167.0, 192.0 ], "width_at_max25_m": 5.75, "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": "Arcon", "county": "Loire", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }