{ "ocl_version": "0.1.0", "name": "Discovered lane (45.0691, 3.9999)", "slug": "discovered-lane-45-0691-3-9999", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 38.91701337394693, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 441.0, "end_distance_m": 443.0, "start_elevation_m": 830.9003662298542, "end_elevation_m": 831.6787064973331, "min_gradient_pct": -13.281967928128324 }, { "window_m": 3.0, "max_gradient_pct": 36.89307233049325, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 446.0, "end_distance_m": 449.0, "start_elevation_m": 832.2130195865832, "end_elevation_m": 833.319811756498, "min_gradient_pct": -6.043528984419784 }, { "window_m": 5.0, "max_gradient_pct": 32.995397820930066, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 446.0, "end_distance_m": 451.0, "start_elevation_m": 832.2130195865832, "end_elevation_m": 833.8627894776297, "min_gradient_pct": -2.064104172166026 }, { "window_m": 10.0, "max_gradient_pct": 29.624232477755186, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 441.0, "end_distance_m": 451.0, "start_elevation_m": 830.9003662298542, "end_elevation_m": 833.8627894776297, "min_gradient_pct": 3.465899175874938 }, { "window_m": 20.0, "max_gradient_pct": 24.822570474358372, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 432.0, "end_distance_m": 452.0, "start_elevation_m": 829.1666558545105, "end_elevation_m": 834.1311699493822, "min_gradient_pct": 3.611100517612158 }, { "window_m": 25.0, "max_gradient_pct": 23.008395350208957, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 429.0, "end_distance_m": 454.0, "start_elevation_m": 828.685127122895, "end_elevation_m": 834.4372259604472, "min_gradient_pct": 3.753282033823325 }, { "window_m": 50.0, "max_gradient_pct": 18.887838210369637, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 404.0, "end_distance_m": 454.0, "start_elevation_m": 824.9933068552624, "end_elevation_m": 834.4372259604472, "min_gradient_pct": 5.32365928201034 }, { "window_m": 100.0, "max_gradient_pct": 16.465289340347454, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 355.0, "end_distance_m": 455.0, "start_elevation_m": 818.1020938055515, "end_elevation_m": 834.5673831458989, "min_gradient_pct": 6.588200616861968 } ], "shape": { "ascent_concentration": 0.336, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 131.0, "shape_class": "sustained" }, "length_m": 638.6447498433674, "start_elevation_m": 783.7829670714922, "end_elevation_m": 851.498451863748, "endpoint_gain_m": 67.71548479225578, "overall_gradient_pct": 10.60299717626482, "accumulated_ascent_m": 67.98112415081835, "window_maxima": { "max_5m": { "gradient_pct": 32.995397820930066, "start_distance_m": 446.0, "end_distance_m": 451.0, "midpoint_distance_m": 448.5, "start_elevation_m": 832.2130195865832, "end_elevation_m": 833.8627894776297, "start_xy": [ 778681.6029887011, 6441627.172703158 ], "end_xy": [ 778681.711954026, 6441622.184009676 ] }, "max_10m": { "gradient_pct": 29.624232477755186, "start_distance_m": 441.0, "end_distance_m": 451.0, "midpoint_distance_m": 446.0, "start_elevation_m": 830.9003662298542, "end_elevation_m": 833.8627894776297, "start_xy": [ 778681.6516043424, 6441632.172466804 ], "end_xy": [ 778681.711954026, 6441622.184009676 ] }, "max_20m": { "gradient_pct": 24.822570474358372, "start_distance_m": 432.0, "end_distance_m": 452.0, "midpoint_distance_m": 442.0, "start_elevation_m": 829.1666558545105, "end_elevation_m": 834.1311699493822, "start_xy": [ 778682.8048265086, 6441641.097240218 ], "end_xy": [ 778681.8613863426, 6441621.195237719 ] }, "max_25m": { "gradient_pct": 23.008395350208957, "start_distance_m": 429.0, "end_distance_m": 454.0, "midpoint_distance_m": 441.5, "start_elevation_m": 828.685127122895, "end_elevation_m": 834.4372259604472, "start_xy": [ 778683.1949913733, 6441644.071760579 ], "end_xy": [ 778682.1602509755, 6441619.217693806 ] }, "max_50m": { "gradient_pct": 18.887838210369637, "start_distance_m": 404.0, "end_distance_m": 454.0, "midpoint_distance_m": 429.0, "start_elevation_m": 824.9933068552624, "end_elevation_m": 834.4372259604472, "start_xy": [ 778686.4463652461, 6441668.859430254 ], "end_xy": [ 778682.1602509755, 6441619.217693806 ] }, "max_100m": { "gradient_pct": 16.465289340347454, "start_distance_m": 355.0, "end_distance_m": 455.0, "midpoint_distance_m": 405.0, "start_elevation_m": 818.1020938055515, "end_elevation_m": 834.5673831458989, "start_xy": [ 778703.891661177, 6441712.67322013 ], "end_xy": [ 778682.309683292, 6441618.228921848 ] } }, "window_minima": { "min_5m": { "gradient_pct": -2.064104172166026, "start_distance_m": 457.0, "end_distance_m": 462.0, "midpoint_distance_m": 459.5, "start_elevation_m": 834.781810775897, "end_elevation_m": 834.6786055672887, "start_xy": [ 778682.608547925, 6441616.251377935 ], "end_xy": [ 778683.9380274653, 6441611.437508687 ] }, "min_10m": { "gradient_pct": 3.465899175874938, "start_distance_m": 589.0, "end_distance_m": 599.0, "midpoint_distance_m": 594.0, "start_elevation_m": 847.9309906631838, "end_elevation_m": 848.2775805807713, "start_xy": [ 778720.1149695859, 6441495.238072916 ], "end_xy": [ 778714.9925030905, 6441486.67708913 ] }, "min_20m": { "gradient_pct": 3.611100517612158, "start_distance_m": 578.0, "end_distance_m": 598.0, "midpoint_distance_m": 588.0, "start_elevation_m": 847.5204014237527, "end_elevation_m": 848.2426215272751, "start_xy": [ 778724.4097240415, 6441505.352730426 ], "end_xy": [ 778715.5469494393, 6441487.509308599 ] }, "min_25m": { "gradient_pct": 3.753282033823325, "start_distance_m": 576.0, "end_distance_m": 601.0, "midpoint_distance_m": 588.5, "start_elevation_m": 847.4212228788867, "end_elevation_m": 848.3595433873426, "start_xy": [ 778724.9678153577, 6441507.273286096 ], "end_xy": [ 778713.883610393, 6441485.012650189 ] }, "min_50m": { "gradient_pct": 5.32365928201034, "start_distance_m": 572.0, "end_distance_m": 622.0, "midpoint_distance_m": 597.0, "start_elevation_m": 847.1977716106521, "end_elevation_m": 849.8596012516573, "start_xy": [ 778725.9574234951, 6441511.138418544 ], "end_xy": [ 778699.6184593455, 6441469.671005303 ] }, "min_100m": { "gradient_pct": 6.588200616861968, "start_distance_m": 30.0, "end_distance_m": 130.0, "midpoint_distance_m": 80.0, "start_elevation_m": 786.6165081812969, "end_elevation_m": 793.2047087981589, "start_xy": [ 778753.22542346, 6441977.79766649 ], "end_xy": [ 778755.1205076987, 6441877.832797105 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 38.91701337394693, "start_distance_m": 441.0, "end_distance_m": 443.0, "midpoint_distance_m": 442.0, "start_elevation_m": 830.9003662298542, "end_elevation_m": 831.6787064973331, "start_xy": [ 778681.6516043424, 6441632.172466804 ], "end_xy": [ 778681.6321580859, 6441630.172561347 ] }, "max_3m": { "gradient_pct": 36.89307233049325, "start_distance_m": 446.0, "end_distance_m": 449.0, "midpoint_distance_m": 447.5, "start_elevation_m": 832.2130195865832, "end_elevation_m": 833.319811756498, "start_xy": [ 778681.6029887011, 6441627.172703158 ], "end_xy": [ 778681.5738193163, 6441624.172844971 ] } }, "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": 0.217, "obstruction_max_height_m": 16.88, "flagged_windows_m": [ 2, 3, 5, 10, 20, 25, 50, 100 ] }, "review": [], "extent": [ "may_start_earlier", "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-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_E778-N6441_0m5@21LHD4MM-2025-03-12.tif", "data/cache/fr/ign-lidarhd_dtm_E778-N6442_0m5@21LHD4MM-2025-03-12.tif" ], "calculated_at": "2026-09-22T18:04:00+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": [ "E778-N6441", "E778-N6442" ], "elevation_blocks": [ "21LHD4MM@2025-03-12" ], "ign_dalles": [ "LHD_FXX_0778_6442_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0778_6443_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD4MM" ], "ign_editions": [ "2025-03-12" ], "ign_dsm_edition": { "LHD_FXX_0778_6442_MNT_O_0M50_LAMB93_IGN69": "2025-03-12", "LHD_FXX_0778_6443_MNT_O_0M50_LAMB93_IGN69": "2025-03-12" }, "climb_origin": "discovered", "structure_own_ways": 4, "carriageway": { "stations": 32, "stations_resolved": 32, "width_median_m": 5.62, "width_p10_m": 2.08, "width_min_m": 1.0, "width_max_m": 10.25, "bounded_share": 0.438, "unbounded_share": 0.562, "confidence_median": 0.0, "width_median_bounded_m": 4.62, "window_m": [ 429.0, 454.0 ], "width_at_max25_m": 2.0, "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": 32, "stations_resolved": 32, "width_median_m": 4.62, "width_p10_m": 1.0, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.781, "unbounded_share": 0.219, "confidence_median": 1.0, "width_median_bounded_m": 3.0, "window_m": [ 429.0, 454.0 ], "width_at_max25_m": 1.25, "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": "Saint-\u00c9tienne-Lardeyrol", "county": "Haute-Loire", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }