{ "ocl_version": "0.1.0", "name": "Lane near Rivi\u00e8re", "slug": "discovered-lane-43-9170-0-6420", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 36.86996155216349, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 277.0, "end_distance_m": 279.0, "start_elevation_m": 141.41348117313095, "end_elevation_m": 142.15088040417422, "min_gradient_pct": -19.970840540773338 }, { "window_m": 3.0, "max_gradient_pct": 34.350325971023686, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 277.0, "end_distance_m": 280.0, "start_elevation_m": 141.41348117313095, "end_elevation_m": 142.44399095226166, "min_gradient_pct": -6.91939228522737 }, { "window_m": 5.0, "max_gradient_pct": 28.680496522981116, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 275.0, "end_distance_m": 280.0, "start_elevation_m": 141.0099661261126, "end_elevation_m": 142.44399095226166, "min_gradient_pct": -0.7047629742561412 }, { "window_m": 10.0, "max_gradient_pct": 22.238148648886664, "diagnostic": false, "flags": [], "start_distance_m": 14.0, "end_distance_m": 24.0, "start_elevation_m": 92.5870538854276, "end_elevation_m": 94.81086875031626, "min_gradient_pct": 4.848403063909643 }, { "window_m": 20.0, "max_gradient_pct": 21.679379361174114, "diagnostic": false, "flags": [], "start_distance_m": 211.0, "end_distance_m": 231.0, "start_elevation_m": 128.77369984008337, "end_elevation_m": 133.1095757123182, "min_gradient_pct": 7.12728176498004 }, { "window_m": 25.0, "max_gradient_pct": 21.230449056726002, "diagnostic": false, "flags": [], "start_distance_m": 9.0, "end_distance_m": 34.0, "start_elevation_m": 91.57387669244524, "end_elevation_m": 96.88148895662674, "min_gradient_pct": 7.17548494088544 }, { "window_m": 50.0, "max_gradient_pct": 20.630944180457217, "diagnostic": false, "flags": [], "start_distance_m": 7.0, "end_distance_m": 57.0, "start_elevation_m": 91.18624757120887, "end_elevation_m": 101.50171966143748, "min_gradient_pct": 12.820422988953567 }, { "window_m": 100.0, "max_gradient_pct": 19.802735751534314, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 166.0, "end_distance_m": 266.0, "start_elevation_m": 119.77928332402404, "end_elevation_m": 139.58201907555835, "min_gradient_pct": 15.970622869235486 } ], "shape": { "ascent_concentration": 0.293, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 288.0, "shape_class": "sustained" }, "length_m": 309.6378366210776, "start_elevation_m": 90.27139738352264, "end_elevation_m": 144.44271877849857, "endpoint_gain_m": 54.171321394975934, "overall_gradient_pct": 17.49505873898371, "accumulated_ascent_m": 54.5707382057914, "window_maxima": { "max_5m": { "gradient_pct": 28.680496522981116, "start_distance_m": 275.0, "end_distance_m": 280.0, "midpoint_distance_m": 277.5, "start_elevation_m": 141.0099661261126, "end_elevation_m": 142.44399095226166, "start_xy": [ 510672.3812348433, 6316086.589648336 ], "end_xy": [ 510676.08903955494, 6316089.944075891 ] }, "max_10m": { "gradient_pct": 22.238148648886664, "start_distance_m": 14.0, "end_distance_m": 24.0, "midpoint_distance_m": 19.0, "start_elevation_m": 92.5870538854276, "end_elevation_m": 94.81086875031626, "start_xy": [ 510589.3052712073, 6315840.456151263 ], "end_xy": [ 510592.6890363554, 6315849.8662593085 ] }, "max_20m": { "gradient_pct": 21.679379361174114, "start_distance_m": 211.0, "end_distance_m": 231.0, "midpoint_distance_m": 221.0, "start_elevation_m": 128.77369984008337, "end_elevation_m": 133.1095757123182, "start_xy": [ 510651.5848187186, 6316027.0752757955 ], "end_xy": [ 510656.64946731925, 6316046.423385123 ] }, "max_25m": { "gradient_pct": 21.230449056726002, "start_distance_m": 9.0, "end_distance_m": 34.0, "midpoint_distance_m": 21.5, "start_elevation_m": 91.57387669244524, "end_elevation_m": 96.88148895662674, "start_xy": [ 510587.6133886333, 6315835.7510972405 ], "end_xy": [ 510596.07280150347, 6315859.276367353 ] }, "max_50m": { "gradient_pct": 20.630944180457217, "start_distance_m": 7.0, "end_distance_m": 57.0, "midpoint_distance_m": 32.0, "start_elevation_m": 91.18624757120887, "end_elevation_m": 101.50171966143748, "start_xy": [ 510586.93663560366, 6315833.869075632 ], "end_xy": [ 510603.855461344, 6315880.919615857 ] }, "max_100m": { "gradient_pct": 19.802735751534314, "start_distance_m": 166.0, "end_distance_m": 266.0, "midpoint_distance_m": 216.0, "start_elevation_m": 119.77928332402404, "end_elevation_m": 139.58201907555835, "start_xy": [ 510640.42817745765, 6315983.480752361 ], "end_xy": [ 510666.6136805492, 6316079.909750513 ] } }, "window_minima": { "min_5m": { "gradient_pct": -0.7047629742561412, "start_distance_m": 280.0, "end_distance_m": 285.0, "midpoint_distance_m": 282.5, "start_elevation_m": 142.44399095226166, "end_elevation_m": 142.40875280354885, "start_xy": [ 510676.08903955494, 6316089.944075891 ], "end_xy": [ 510680.7314929473, 6316091.598960768 ] }, "min_10m": { "gradient_pct": 4.848403063909643, "start_distance_m": 299.0, "end_distance_m": 309.0, "midpoint_distance_m": 304.0, "start_elevation_m": 143.90674169912114, "end_elevation_m": 144.3915820055121, "start_xy": [ 510694.3832782855, 6316090.466995842 ], "end_xy": [ 510703.5521742386, 6316086.475586693 ] }, "min_20m": { "gradient_pct": 7.12728176498004, "start_distance_m": 289.0, "end_distance_m": 309.0, "midpoint_distance_m": 299.0, "start_elevation_m": 142.9661256525161, "end_elevation_m": 144.3915820055121, "start_xy": [ 510684.6430872684, 6316092.110748923 ], "end_xy": [ 510703.5521742386, 6316086.475586693 ] }, "min_25m": { "gradient_pct": 7.17548494088544, "start_distance_m": 280.0, "end_distance_m": 305.0, "midpoint_distance_m": 292.5, "start_elevation_m": 142.44399095226166, "end_elevation_m": 144.23786218748302, "start_xy": [ 510676.08903955494, 6316089.944075891 ], "end_xy": [ 510699.8846158574, 6316088.072150352 ] }, "min_50m": { "gradient_pct": 12.820422988953567, "start_distance_m": 259.0, "end_distance_m": 309.0, "midpoint_distance_m": 284.0, "start_elevation_m": 137.98137051103532, "end_elevation_m": 144.3915820055121, "start_xy": [ 510663.9074465806, 6316073.454032295 ], "end_xy": [ 510703.5521742386, 6316086.475586693 ] }, "min_100m": { "gradient_pct": 15.970622869235486, "start_distance_m": 209.0, "end_distance_m": 309.0, "midpoint_distance_m": 259.0, "start_elevation_m": 128.42095913627662, "end_elevation_m": 144.3915820055121, "start_xy": [ 510651.07835385855, 6316025.140464863 ], "end_xy": [ 510703.5521742386, 6316086.475586693 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 36.86996155216349, "start_distance_m": 277.0, "end_distance_m": 279.0, "midpoint_distance_m": 278.0, "start_elevation_m": 141.41348117313095, "end_elevation_m": 142.15088040417422, "start_xy": [ 510673.864356728, 6316087.931419358 ], "end_xy": [ 510675.3474786126, 6316089.27319038 ] }, "max_3m": { "gradient_pct": 34.350325971023686, "start_distance_m": 277.0, "end_distance_m": 280.0, "midpoint_distance_m": 278.5, "start_elevation_m": 141.41348117313095, "end_elevation_m": 142.44399095226166, "start_xy": [ 510673.864356728, 6316087.931419358 ], "end_xy": [ 510676.08903955494, 6316089.944075891 ] } }, "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": 0.138, "obstruction_max_height_m": 12.79, "flagged_windows_m": [ 2, 3, 5, 100 ] }, "review": [], "extent": [ "may_start_earlier", "may_continue_beyond_end" ] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "16bcc1553fe58b280e0c4a66a3ab0980530490a6", "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-so5", "road_pbf": "block-batch-fr-so5.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": "sha256:18f786cf9fa98070" }, "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_E510-N6315_0m5@21LHD2HP-2026-03-20.tif", "data/cache/fr/ign-lidarhd_dtm_E510-N6316_0m5@21LHD2HP-2026-03-20.tif" ], "calculated_at": "2026-09-27T04:12:51+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-so5.osm.pbf", "osm_snapshot": "", "run_id": "fr-so5", "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": [ "E510-N6315", "E510-N6316" ], "elevation_blocks": [ "21LHD2HP@2026-03-20" ], "ign_dalles": [ "LHD_FXX_0510_6316_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0510_6317_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD2HP" ], "ign_editions": [ "2026-03-20" ], "ign_dsm_edition": { "LHD_FXX_0510_6316_MNT_O_0M50_LAMB93_IGN69": "2026-03-20", "LHD_FXX_0510_6317_MNT_O_0M50_LAMB93_IGN69": "2026-03-20" }, "climb_origin": "discovered", "seam_filled_samples": { "count": 0, "distances_m": [] }, "seam_filled_in_maximum": false, "structure_own_ways": "none \u2014 the route carried no way list and no mapped way runs along it; own decks unmasked", "carriageway": { "stations": 19, "stations_resolved": 19, "width_median_m": 7.0, "width_p10_m": 4.25, "width_min_m": 4.0, "width_max_m": 11.5, "bounded_share": 0.211, "unbounded_share": 0.789, "confidence_median": 0.0, "width_median_bounded_m": 6.88, "window_m": [ 9.0, 34.0 ], "width_at_max25_m": 6.0, "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": 19, "stations_resolved": 19, "width_median_m": 7.5, "width_p10_m": 4.75, "width_min_m": 1.0, "width_max_m": 12.0, "bounded_share": 0.474, "unbounded_share": 0.526, "confidence_median": 0.0, "width_median_bounded_m": 6.25, "window_m": [ 9.0, 34.0 ], "width_at_max25_m": 6.25, "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": "Lectoure", "county": "Gers", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }