{ "ocl_version": "0.1.0", "name": "Ancienne route d'Empurany", "slug": "ancienne-route-d-empurany-2", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 40.86847101278295, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 1957.0, "end_distance_m": 1959.0, "start_elevation_m": 641.3771722272428, "end_elevation_m": 642.1945416474985, "min_gradient_pct": -13.908815001661878 }, { "window_m": 3.0, "max_gradient_pct": 34.25927744060194, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 1956.0, "end_distance_m": 1959.0, "start_elevation_m": 641.1667633242804, "end_elevation_m": 642.1945416474985, "min_gradient_pct": -12.50591017512003 }, { "window_m": 5.0, "max_gradient_pct": 26.104247115042654, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1954.0, "end_distance_m": 1959.0, "start_elevation_m": 640.8893292917463, "end_elevation_m": 642.1945416474985, "min_gradient_pct": -9.850560540148763 }, { "window_m": 10.0, "max_gradient_pct": 24.07098890418297, "diagnostic": false, "flags": [], "start_distance_m": 2276.0, "end_distance_m": 2286.0, "start_elevation_m": 681.1760928226798, "end_elevation_m": 683.5831917130981, "min_gradient_pct": -8.580958616882981 }, { "window_m": 20.0, "max_gradient_pct": 23.01331765414659, "diagnostic": false, "flags": [], "start_distance_m": 2276.0, "end_distance_m": 2296.0, "start_elevation_m": 681.1760928226798, "end_elevation_m": 685.7787563535092, "min_gradient_pct": -6.797534121142235 }, { "window_m": 25.0, "max_gradient_pct": 22.961133163917566, "diagnostic": false, "flags": [], "start_distance_m": 2276.0, "end_distance_m": 2301.0, "start_elevation_m": 681.1760928226798, "end_elevation_m": 686.9163761136592, "min_gradient_pct": -6.4144371592360585 }, { "window_m": 50.0, "max_gradient_pct": 20.748172440318058, "diagnostic": false, "flags": [], "start_distance_m": 2258.0, "end_distance_m": 2308.0, "start_elevation_m": 677.8490536437523, "end_elevation_m": 688.2231398639113, "min_gradient_pct": -4.63996177519266 }, { "window_m": 100.0, "max_gradient_pct": 17.28108020785237, "diagnostic": false, "flags": [], "start_distance_m": 2211.0, "end_distance_m": 2311.0, "start_elevation_m": 671.354832188106, "end_elevation_m": 688.6359123959584, "min_gradient_pct": -2.7181727740467068 } ], "shape": { "ascent_concentration": 0.462, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 155.0, "shape_class": "stepped" }, "length_m": 2320.667864639153, "start_elevation_m": 549.6196605058559, "end_elevation_m": 689.2970205078078, "endpoint_gain_m": 139.6773600019519, "overall_gradient_pct": 6.0188432015742475, "accumulated_ascent_m": 151.6157505725754, "window_maxima": { "max_5m": { "gradient_pct": 26.104247115042654, "start_distance_m": 1954.0, "end_distance_m": 1959.0, "midpoint_distance_m": 1956.5, "start_elevation_m": 640.8893292917463, "end_elevation_m": 642.1945416474985, "start_xy": [ 823680.1201485806, 6434937.983693302 ], "end_xy": [ 823680.5873015885, 6434942.961822274 ] }, "max_10m": { "gradient_pct": 24.07098890418297, "start_distance_m": 2276.0, "end_distance_m": 2286.0, "midpoint_distance_m": 2281.0, "start_elevation_m": 681.1760928226798, "end_elevation_m": 683.5831917130981, "start_xy": [ 823746.888976018, 6435204.8248665705 ], "end_xy": [ 823737.2906922098, 6435207.616002176 ] }, "max_20m": { "gradient_pct": 23.01331765414659, "start_distance_m": 2276.0, "end_distance_m": 2296.0, "midpoint_distance_m": 2286.0, "start_elevation_m": 681.1760928226798, "end_elevation_m": 685.7787563535092, "start_xy": [ 823746.888976018, 6435204.8248665705 ], "end_xy": [ 823727.5525217091, 6435209.859971893 ] }, "max_25m": { "gradient_pct": 22.961133163917566, "start_distance_m": 2276.0, "end_distance_m": 2301.0, "midpoint_distance_m": 2288.5, "start_elevation_m": 681.1760928226798, "end_elevation_m": 686.9163761136592, "start_xy": [ 823746.888976018, 6435204.8248665705 ], "end_xy": [ 823722.5900377323, 6435210.471325129 ] }, "max_50m": { "gradient_pct": 20.748172440318058, "start_distance_m": 2258.0, "end_distance_m": 2308.0, "midpoint_distance_m": 2283.0, "start_elevation_m": 677.8490536437523, "end_elevation_m": 688.2231398639113, "start_xy": [ 823746.8966499853, 6435190.843850586 ], "end_xy": [ 823715.606140861, 6435210.872679633 ] }, "max_100m": { "gradient_pct": 17.28108020785237, "start_distance_m": 2211.0, "end_distance_m": 2311.0, "midpoint_distance_m": 2261.0, "start_elevation_m": 671.354832188106, "end_elevation_m": 688.6359123959584, "start_xy": [ 823707.7246082933, 6435165.006236745 ], "end_xy": [ 823712.6082306736, 6435210.984637249 ] } }, "window_minima": { "min_5m": { "gradient_pct": -9.850560540148763, "start_distance_m": 1189.0, "end_distance_m": 1194.0, "midpoint_distance_m": 1191.5, "start_elevation_m": 577.6841735048645, "end_elevation_m": 577.191645477857, "start_xy": [ 823860.2188509068, 6434306.294547753 ], "end_xy": [ 823863.6819450007, 6434302.688028753 ] }, "min_10m": { "gradient_pct": -8.580958616882981, "start_distance_m": 1184.0, "end_distance_m": 1194.0, "midpoint_distance_m": 1189.0, "start_elevation_m": 578.0497413395453, "end_elevation_m": 577.191645477857, "start_xy": [ 823857.9903062414, 6434310.737793787 ], "end_xy": [ 823863.6819450007, 6434302.688028753 ] }, "min_20m": { "gradient_pct": -6.797534121142235, "start_distance_m": 1174.0, "end_distance_m": 1194.0, "midpoint_distance_m": 1184.0, "start_elevation_m": 578.5511523020855, "end_elevation_m": 577.191645477857, "start_xy": [ 823853.8564245906, 6434319.843342782 ], "end_xy": [ 823863.6819450007, 6434302.688028753 ] }, "min_25m": { "gradient_pct": -6.4144371592360585, "start_distance_m": 1170.0, "end_distance_m": 1195.0, "midpoint_distance_m": 1182.5, "start_elevation_m": 578.7335323309251, "end_elevation_m": 577.1299230411161, "start_xy": [ 823852.4034642859, 6434323.569270545 ], "end_xy": [ 823864.3745638195, 6434301.966724953 ] }, "min_50m": { "gradient_pct": -4.63996177519266, "start_distance_m": 1150.0, "end_distance_m": 1200.0, "midpoint_distance_m": 1175.0, "start_elevation_m": 579.3095355425513, "end_elevation_m": 576.989554654955, "start_xy": [ 823844.9841913914, 6434342.141414573 ], "end_xy": [ 823867.8376579133, 6434298.360205953 ] }, "min_100m": { "gradient_pct": -2.7181727740467068, "start_distance_m": 778.0, "end_distance_m": 878.0, "midpoint_distance_m": 828.0, "start_elevation_m": 584.8458792918025, "end_elevation_m": 582.1277065177558, "start_xy": [ 823927.1772190017, 6434666.290391214 ], "end_xy": [ 823855.296904028, 6434596.819692386 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 40.86847101278295, "start_distance_m": 1957.0, "end_distance_m": 1959.0, "midpoint_distance_m": 1958.0, "start_elevation_m": 641.3771722272428, "end_elevation_m": 642.1945416474985, "start_xy": [ 823680.4004403853, 6434940.970570685 ], "end_xy": [ 823680.5873015885, 6434942.961822274 ] }, "max_3m": { "gradient_pct": 34.25927744060194, "start_distance_m": 1956.0, "end_distance_m": 1959.0, "midpoint_distance_m": 1957.5, "start_elevation_m": 641.1667633242804, "end_elevation_m": 642.1945416474985, "start_xy": [ 823680.3070097838, 6434939.9749448905 ], "end_xy": [ 823680.5873015885, 6434942.961822274 ] } }, "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": 0.115, "obstruction_max_height_m": 16.33, "flagged_windows_m": [ 2, 3, 5 ] }, "review": [], "extent": [ "may_start_earlier", "may_continue_beyond_end" ] }, "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_E823-N6434_0m5@22LHD5NM-2025-02-27.tif", "data/cache/fr/ign-lidarhd_dtm_E823-N6435_0m5@22LHD5NM-2025-02-27.tif", "data/cache/fr/ign-lidarhd_dtm_E824-N6434_0m5@22LHD5NM-2025-02-27.tif", "data/cache/fr/ign-lidarhd_dtm_E824-N6435_0m5@22LHD5NM-2025-02-27.tif" ], "calculated_at": "2026-09-22T12:12:33+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": [ "E823-N6434", "E823-N6435", "E824-N6434", "E824-N6435" ], "elevation_blocks": [ "22LHD5NM@2025-02-27" ], "ign_dalles": [ "LHD_FXX_0823_6435_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0823_6436_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0824_6435_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0824_6436_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "22LHD5NM" ], "ign_editions": [ "2025-02-27" ], "ign_dsm_edition": { "LHD_FXX_0823_6435_MNT_O_0M50_LAMB93_IGN69": "2025-02-27", "LHD_FXX_0823_6436_MNT_O_0M50_LAMB93_IGN69": "2025-02-27", "LHD_FXX_0824_6435_MNT_O_0M50_LAMB93_IGN69": "2025-02-27", "LHD_FXX_0824_6436_MNT_O_0M50_LAMB93_IGN69": "2025-02-27" }, "climb_origin": "discovered", "structure_own_ways": 3, "carriageway": { "stations": 99, "stations_resolved": 99, "width_median_m": 4.25, "width_p10_m": 2.5, "width_min_m": 1.0, "width_max_m": 7.75, "bounded_share": 0.535, "unbounded_share": 0.465, "confidence_median": 0.531, "width_median_bounded_m": 4.5, "window_m": [ 2276.0, 2301.0 ], "width_at_max25_m": 5.5, "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": 99, "stations_resolved": 99, "width_median_m": 5.75, "width_p10_m": 2.25, "width_min_m": 0.5, "width_max_m": 11.5, "bounded_share": 0.909, "unbounded_share": 0.091, "confidence_median": 1.0, "width_median_bounded_m": 5.25, "window_m": [ 2276.0, 2301.0 ], "width_at_max25_m": 7.75, "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": "Empurany", "county": "Ard\u00e8che", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }