{ "ocl_version": "0.1.0", "name": "Chemin du Garay", "slug": "chemin-du-garay", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 24.121310481984892, "diagnostic": true, "flags": [], "start_distance_m": 272.0, "end_distance_m": 274.0, "start_elevation_m": 617.4491318998091, "end_elevation_m": 617.9315581094488, "min_gradient_pct": -4.040020223732199 }, { "window_m": 3.0, "max_gradient_pct": 23.2191834836082, "diagnostic": true, "flags": [], "start_distance_m": 272.0, "end_distance_m": 275.0, "start_elevation_m": 617.4491318998091, "end_elevation_m": 618.1457074043174, "min_gradient_pct": -2.959690978252638 }, { "window_m": 5.0, "max_gradient_pct": 23.441456489340453, "diagnostic": false, "flags": [], "start_distance_m": 272.0, "end_distance_m": 277.0, "start_elevation_m": 617.4491318998091, "end_elevation_m": 618.6212047242761, "min_gradient_pct": -3.015062711833707 }, { "window_m": 10.0, "max_gradient_pct": 22.875000151866516, "diagnostic": false, "flags": [], "start_distance_m": 272.0, "end_distance_m": 282.0, "start_elevation_m": 617.4491318998091, "end_elevation_m": 619.7366319149958, "min_gradient_pct": -2.0905994600968825 }, { "window_m": 20.0, "max_gradient_pct": 22.44840495898984, "diagnostic": false, "flags": [], "start_distance_m": 270.0, "end_distance_m": 290.0, "start_elevation_m": 617.0077049511016, "end_elevation_m": 621.4973859428995, "min_gradient_pct": -0.18878044338066502 }, { "window_m": 25.0, "max_gradient_pct": 22.19008402039617, "diagnostic": false, "flags": [], "start_distance_m": 268.0, "end_distance_m": 293.0, "start_elevation_m": 616.5754349832453, "end_elevation_m": 622.1229559883443, "min_gradient_pct": 0.020797777952793695 }, { "window_m": 50.0, "max_gradient_pct": 20.90687574281492, "diagnostic": false, "flags": [], "start_distance_m": 250.0, "end_distance_m": 300.0, "start_elevation_m": 613.0322100082137, "end_elevation_m": 623.4856478796212, "min_gradient_pct": 0.960649662749347 }, { "window_m": 100.0, "max_gradient_pct": 17.846158728161754, "diagnostic": false, "flags": [], "start_distance_m": 234.0, "end_distance_m": 334.0, "start_elevation_m": 610.544700099906, "end_elevation_m": 628.3908588280677, "min_gradient_pct": 2.792646686498074 } ], "shape": { "ascent_concentration": 0.369, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 176.0, "shape_class": "sustained" }, "length_m": 893.7304974918178, "start_elevation_m": 589.9748985263643, "end_elevation_m": 673.8546783203132, "endpoint_gain_m": 83.87977979394884, "overall_gradient_pct": 9.385354984455677, "accumulated_ascent_m": 84.29274489652482, "window_maxima": { "max_5m": { "gradient_pct": 23.441456489340453, "start_distance_m": 272.0, "end_distance_m": 277.0, "midpoint_distance_m": 274.5, "start_elevation_m": 617.4491318998091, "end_elevation_m": 618.6212047242761, "start_xy": [ 797721.9512514317, 6474999.365872442 ], "end_xy": [ 797726.8521963181, 6474998.392229416 ] }, "max_10m": { "gradient_pct": 22.875000151866516, "start_distance_m": 272.0, "end_distance_m": 282.0, "midpoint_distance_m": 277.0, "start_elevation_m": 617.4491318998091, "end_elevation_m": 619.7366319149958, "start_xy": [ 797721.9512514317, 6474999.365872442 ], "end_xy": [ 797731.7683838164, 6474997.48058229 ] }, "max_20m": { "gradient_pct": 22.44840495898984, "start_distance_m": 270.0, "end_distance_m": 290.0, "midpoint_distance_m": 280.0, "start_elevation_m": 617.0077049511016, "end_elevation_m": 621.4973859428995, "start_xy": [ 797720.039876986, 6474999.954640416 ], "end_xy": [ 797739.6342838135, 6474996.021946889 ] }, "max_25m": { "gradient_pct": 22.19008402039617, "start_distance_m": 268.0, "end_distance_m": 293.0, "midpoint_distance_m": 280.5, "start_elevation_m": 616.5754349832453, "end_elevation_m": 622.1229559883443, "start_xy": [ 797718.12850254, 6475000.543408391 ], "end_xy": [ 797742.5839963126, 6474995.4749586135 ] }, "max_50m": { "gradient_pct": 20.90687574281492, "start_distance_m": 250.0, "end_distance_m": 300.0, "midpoint_distance_m": 275.0, "start_elevation_m": 613.0322100082137, "end_elevation_m": 623.4856478796212, "start_xy": [ 797700.9261325279, 6475005.842320163 ], "end_xy": [ 797749.46665881, 6474994.198652637 ] }, "max_100m": { "gradient_pct": 17.846158728161754, "start_distance_m": 234.0, "end_distance_m": 334.0, "midpoint_distance_m": 284.0, "start_elevation_m": 610.544700099906, "end_elevation_m": 628.3908588280677, "start_xy": [ 797685.6351369615, 6475010.55246396 ], "end_xy": [ 797782.6984680619, 6474987.027952172 ] } }, "window_minima": { "min_5m": { "gradient_pct": -3.015062711833707, "start_distance_m": 604.0, "end_distance_m": 609.0, "midpoint_distance_m": 606.5, "start_elevation_m": 648.3262123116223, "end_elevation_m": 648.1754591760306, "start_xy": [ 798026.1794983908, 6474891.877423036 ], "end_xy": [ 798021.1795101779, 6474891.888279932 ] }, "min_10m": { "gradient_pct": -2.0905994600968825, "start_distance_m": 602.0, "end_distance_m": 612.0, "midpoint_distance_m": 607.0, "start_elevation_m": 648.3624596038582, "end_elevation_m": 648.1533996578485, "start_xy": [ 798028.1794936758, 6474891.873080278 ], "end_xy": [ 798018.1795172503, 6474891.894794069 ] }, "min_20m": { "gradient_pct": -0.18878044338066502, "start_distance_m": 495.0, "end_distance_m": 515.0, "midpoint_distance_m": 505.0, "start_elevation_m": 645.1073516136048, "end_elevation_m": 645.0695955249287, "start_xy": [ 797934.9134176102, 6474940.288154125 ], "end_xy": [ 797953.6601720705, 6474933.83837726 ] }, "min_25m": { "gradient_pct": 0.020797777952793695, "start_distance_m": 493.0, "end_distance_m": 518.0, "midpoint_distance_m": 505.5, "start_elevation_m": 645.0969950363877, "end_elevation_m": 645.1021944808759, "start_xy": [ 797933.429676498, 6474941.6292403685 ], "end_xy": [ 797956.5362129492, 6474932.984920251 ] }, "min_50m": { "gradient_pct": 0.960649662749347, "start_distance_m": 492.0, "end_distance_m": 542.0, "midpoint_distance_m": 517.0, "start_elevation_m": 645.0827404682318, "end_elevation_m": 645.5630652996065, "start_xy": [ 797932.687805942, 6474942.299783491 ], "end_xy": [ 797978.6270662446, 6474923.884176252 ] }, "min_100m": { "gradient_pct": 2.792646686498074, "start_distance_m": 491.0, "end_distance_m": 591.0, "midpoint_distance_m": 541.0, "start_elevation_m": 645.0346295316546, "end_elevation_m": 647.8272762181526, "start_xy": [ 797931.9459353859, 6474942.970326612 ], "end_xy": [ 798020.0253661178, 6474897.826122937 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 24.121310481984892, "start_distance_m": 272.0, "end_distance_m": 274.0, "midpoint_distance_m": 273.0, "start_elevation_m": 617.4491318998091, "end_elevation_m": 617.9315581094488, "start_xy": [ 797721.9512514317, 6474999.365872442 ], "end_xy": [ 797723.9024838192, 6474998.939217691 ] }, "max_3m": { "gradient_pct": 23.2191834836082, "start_distance_m": 272.0, "end_distance_m": 275.0, "midpoint_distance_m": 273.5, "start_elevation_m": 617.4491318998091, "end_elevation_m": 618.1457074043174, "start_xy": [ 797721.9512514317, 6474999.365872442 ], "end_xy": [ 797724.8857213188, 6474998.756888267 ] } }, "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": 0.027, "obstruction_max_height_m": 9.5, "flagged_windows_m": [] }, "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-mc7", "road_pbf": "block-batch-fr-mc7.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_E797-N6474_0m5@22LHD5NM-2025-02-27.tif", "data/cache/fr/ign-lidarhd_dtm_E797-N6475_0m5@22LHD5NM-2025-02-27.tif", "data/cache/fr/ign-lidarhd_dtm_E798-N6474_0m5@22LHD5NM-2025-02-27.tif", "data/cache/fr/ign-lidarhd_dtm_E798-N6475_0m5@22LHD5NM-2025-02-27.tif" ], "calculated_at": "2026-09-22T14:31:44+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc7.osm.pbf", "osm_snapshot": "", "run_id": "fr-mc7", "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": [ "E797-N6474", "E797-N6475", "E798-N6474", "E798-N6475" ], "elevation_blocks": [ "22LHD5NM@2025-02-27" ], "ign_dalles": [ "LHD_FXX_0797_6475_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0797_6476_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0798_6475_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0798_6476_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "22LHD5NM" ], "ign_editions": [ "2025-02-27" ], "ign_dsm_edition": { "LHD_FXX_0797_6475_MNT_O_0M50_LAMB93_IGN69": "2025-02-27", "LHD_FXX_0797_6476_MNT_O_0M50_LAMB93_IGN69": "2025-02-27", "LHD_FXX_0798_6475_MNT_O_0M50_LAMB93_IGN69": "2025-02-27", "LHD_FXX_0798_6476_MNT_O_0M50_LAMB93_IGN69": "2025-02-27" }, "climb_origin": "discovered", "structure_own_ways": 5, "carriageway": { "stations": 42, "stations_resolved": 42, "width_median_m": 5.0, "width_p10_m": 3.25, "width_min_m": 1.5, "width_max_m": 11.0, "bounded_share": 0.381, "unbounded_share": 0.619, "confidence_median": 0.0, "width_median_bounded_m": 4.62, "window_m": [ 268.0, 293.0 ], "width_at_max25_m": 5.75, "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": 42, "stations_resolved": 42, "width_median_m": 6.0, "width_p10_m": 3.05, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.714, "unbounded_share": 0.286, "confidence_median": 1.0, "width_median_bounded_m": 5.25, "window_m": [ 268.0, 293.0 ], "width_at_max25_m": 6.0, "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": "Saint-Ferr\u00e9ol-d'Auroure", "county": "Haute-Loire", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }