{ "ocl_version": "0.1.0", "name": "Chemin de la Ville Haute", "slug": "chemin-de-la-ville-haute", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 24.32919430118403, "diagnostic": true, "flags": [], "start_distance_m": 293.0, "end_distance_m": 295.0, "start_elevation_m": 235.35915312003797, "end_elevation_m": 235.84573700606165, "min_gradient_pct": -4.101681597892082 }, { "window_m": 3.0, "max_gradient_pct": 24.23263824712289, "diagnostic": true, "flags": [], "start_distance_m": 293.0, "end_distance_m": 296.0, "start_elevation_m": 235.35915312003797, "end_elevation_m": 236.08613226745166, "min_gradient_pct": -3.2536064612249525 }, { "window_m": 5.0, "max_gradient_pct": 23.894748251701117, "diagnostic": false, "flags": [], "start_distance_m": 291.0, "end_distance_m": 296.0, "start_elevation_m": 234.8913948548666, "end_elevation_m": 236.08613226745166, "min_gradient_pct": -2.9107183147931437 }, { "window_m": 10.0, "max_gradient_pct": 23.317246276646983, "diagnostic": false, "flags": [], "start_distance_m": 291.0, "end_distance_m": 301.0, "start_elevation_m": 234.8913948548666, "end_elevation_m": 237.2231194825313, "min_gradient_pct": -2.486466474162512 }, { "window_m": 20.0, "max_gradient_pct": 22.30930207077776, "diagnostic": false, "flags": [], "start_distance_m": 283.0, "end_distance_m": 303.0, "start_elevation_m": 233.19866528349985, "end_elevation_m": 237.6605256976554, "min_gradient_pct": -2.283932517055547 }, { "window_m": 25.0, "max_gradient_pct": 22.032311314730464, "diagnostic": false, "flags": [], "start_distance_m": 277.0, "end_distance_m": 302.0, "start_elevation_m": 231.9324061292344, "end_elevation_m": 237.44048395791702, "min_gradient_pct": -2.0526354356429692 }, { "window_m": 50.0, "max_gradient_pct": 19.399960336730658, "diagnostic": false, "flags": [], "start_distance_m": 264.0, "end_distance_m": 314.0, "start_elevation_m": 229.6548061500483, "end_elevation_m": 239.35478631841363, "min_gradient_pct": 0.10439480607118412 }, { "window_m": 100.0, "max_gradient_pct": 15.675900400177538, "diagnostic": false, "flags": [], "start_distance_m": 264.0, "end_distance_m": 364.0, "start_elevation_m": 229.6548061500483, "end_elevation_m": 245.33070655022584, "min_gradient_pct": 4.128800894244108 } ], "shape": { "ascent_concentration": 0.363, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 123.0, "shape_class": "sustained" }, "length_m": 460.454417686929, "start_elevation_m": 202.0088468872207, "end_elevation_m": 249.01898435424377, "endpoint_gain_m": 47.01013746702307, "overall_gradient_pct": 10.209509489164263, "accumulated_ascent_m": 47.604896141290055, "window_maxima": { "max_5m": { "gradient_pct": 23.894748251701117, "start_distance_m": 291.0, "end_distance_m": 296.0, "midpoint_distance_m": 293.5, "start_elevation_m": 234.8913948548666, "end_elevation_m": 236.08613226745166, "start_xy": [ 859378.4203981004, 6530229.2135609295 ], "end_xy": [ 859374.0547116469, 6530226.776189027 ] }, "max_10m": { "gradient_pct": 23.317246276646983, "start_distance_m": 291.0, "end_distance_m": 301.0, "midpoint_distance_m": 296.0, "start_elevation_m": 234.8913948548666, "end_elevation_m": 237.2231194825313, "start_xy": [ 859378.4203981004, 6530229.2135609295 ], "end_xy": [ 859369.6898046323, 6530224.337421952 ] }, "max_20m": { "gradient_pct": 22.30930207077776, "start_distance_m": 283.0, "end_distance_m": 303.0, "midpoint_distance_m": 293.0, "start_elevation_m": 233.19866528349985, "end_elevation_m": 237.6605256976554, "start_xy": [ 859385.8308583457, 6530231.925350638 ], "end_xy": [ 859367.9440747201, 6530223.36149825 ] }, "max_25m": { "gradient_pct": 22.032311314730464, "start_distance_m": 277.0, "end_distance_m": 302.0, "midpoint_distance_m": 289.5, "start_elevation_m": 231.9324061292344, "end_elevation_m": 237.44048395791702, "start_xy": [ 859391.7355713784, 6530232.990415894 ], "end_xy": [ 859368.8169396762, 6530223.849460101 ] }, "max_50m": { "gradient_pct": 19.399960336730658, "start_distance_m": 264.0, "end_distance_m": 314.0, "midpoint_distance_m": 289.0, "start_elevation_m": 229.6548061500483, "end_elevation_m": 239.35478631841363, "start_xy": [ 859404.1161888326, 6530232.011119279 ], "end_xy": [ 859358.1204412952, 6530218.421398459 ] }, "max_100m": { "gradient_pct": 15.675900400177538, "start_distance_m": 264.0, "end_distance_m": 364.0, "midpoint_distance_m": 314.0, "start_elevation_m": 229.6548061500483, "end_elevation_m": 245.33070655022584, "start_xy": [ 859404.1161888326, 6530232.011119279 ], "end_xy": [ 859312.4103492686, 6530198.240520149 ] } }, "window_minima": { "min_5m": { "gradient_pct": -2.9107183147931437, "start_distance_m": 452.0, "end_distance_m": 457.0, "midpoint_distance_m": 454.5, "start_elevation_m": 249.20347087717394, "end_elevation_m": 249.05793496143428, "start_xy": [ 859228.9449954187, 6530170.941807556 ], "end_xy": [ 859224.2498196462, 6530169.222701839 ] }, "min_10m": { "gradient_pct": -2.486466474162512, "start_distance_m": 444.0, "end_distance_m": 454.0, "midpoint_distance_m": 449.0, "start_elevation_m": 249.37008389263235, "end_elevation_m": 249.1214372452161, "start_xy": [ 859236.4572766543, 6530173.692376704 ], "end_xy": [ 859227.0669251097, 6530170.254165269 ] }, "min_20m": { "gradient_pct": -2.283932517055547, "start_distance_m": 438.0, "end_distance_m": 458.0, "midpoint_distance_m": 448.0, "start_elevation_m": 249.4917910223738, "end_elevation_m": 249.0350045189627, "start_xy": [ 859242.0914875811, 6530175.7553035645 ], "end_xy": [ 859223.3107844918, 6530168.878880695 ] }, "min_25m": { "gradient_pct": -2.0526354356429692, "start_distance_m": 433.0, "end_distance_m": 458.0, "midpoint_distance_m": 445.5, "start_elevation_m": 249.54816337787344, "end_elevation_m": 249.0350045189627, "start_xy": [ 859246.7663543231, 6530177.524982251 ], "end_xy": [ 859223.3107844918, 6530168.878880695 ] }, "min_50m": { "gradient_pct": 0.10439480607118412, "start_distance_m": 410.0, "end_distance_m": 460.0, "midpoint_distance_m": 435.0, "start_elevation_m": 248.9646852822321, "end_elevation_m": 249.0168826852677, "start_xy": [ 859268.4807544574, 6530184.875815166 ], "end_xy": [ 859221.4327141829, 6530168.191238409 ] }, "min_100m": { "gradient_pct": 4.128800894244108, "start_distance_m": 360.0, "end_distance_m": 460.0, "midpoint_distance_m": 410.0, "start_elevation_m": 244.88808179102358, "end_elevation_m": 249.0168826852677, "start_xy": [ 859316.1314302864, 6530199.708020083 ], "end_xy": [ 859221.4327141829, 6530168.191238409 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 24.32919430118403, "start_distance_m": 293.0, "end_distance_m": 295.0, "midpoint_distance_m": 294.0, "start_elevation_m": 235.35915312003797, "end_elevation_m": 235.84573700606165, "start_xy": [ 859376.674123519, 6530228.2386121685 ], "end_xy": [ 859374.9278489376, 6530227.263663407 ] }, "max_3m": { "gradient_pct": 24.23263824712289, "start_distance_m": 293.0, "end_distance_m": 296.0, "midpoint_distance_m": 294.5, "start_elevation_m": 235.35915312003797, "end_elevation_m": 236.08613226745166, "start_xy": [ 859376.674123519, 6530228.2386121685 ], "end_xy": [ 859374.0547116469, 6530226.776189027 ] } }, "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": 0.026, "obstruction_max_height_m": 8.0, "flagged_windows_m": [] }, "review": [], "extent": [ "may_start_earlier" ] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "c4fd6b4a89a9718922c7ed8acdf14e43dcf75a33", "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-ju1", "road_pbf": "block-batch-fr-ju1.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": "sha256:78945c7930496bfe" }, "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_E859-N6530_0m5@21LHD6OL-2025-02-20.tif" ], "calculated_at": "2026-09-24T11:32:49+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-ju1.osm.pbf", "osm_snapshot": "", "run_id": "fr-ju1", "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": [ "E859-N6530" ], "elevation_blocks": [ "21LHD6OL@2025-02-20" ], "ign_dalles": [ "LHD_FXX_0859_6531_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD6OL" ], "ign_editions": [ "2025-02-20" ], "ign_dsm_edition": { "LHD_FXX_0859_6531_MNT_O_0M50_LAMB93_IGN69": "2025-02-20" }, "climb_origin": "discovered", "structure_own_ways": 4, "carriageway": { "stations": 25, "stations_resolved": 25, "width_median_m": 6.25, "width_p10_m": 4.75, "width_min_m": 3.25, "width_max_m": 12.0, "bounded_share": 0.2, "unbounded_share": 0.8, "confidence_median": 0.0, "width_median_bounded_m": 5.25, "window_m": [ 277.0, 302.0 ], "width_at_max25_m": 6.25, "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": 25, "stations_resolved": 25, "width_median_m": 5.5, "width_p10_m": 1.8, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.72, "unbounded_share": 0.28, "confidence_median": 1.0, "width_median_bounded_m": 4.12, "window_m": [ 277.0, 302.0 ], "width_at_max25_m": 9.25, "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": "Montluel", "county": "Ain", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }