{ "ocl_version": "0.1.0", "name": "Lane near Paille", "slug": "discovered-lane-44-4581-0-8244", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 48.31265290213054, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 997.0, "end_distance_m": 999.0, "start_elevation_m": 205.22256844906093, "end_elevation_m": 206.18882150710354, "min_gradient_pct": -9.55232569834834 }, { "window_m": 3.0, "max_gradient_pct": 41.095151031020315, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 996.0, "end_distance_m": 999.0, "start_elevation_m": 204.95596697617293, "end_elevation_m": 206.18882150710354, "min_gradient_pct": -9.043430955847498 }, { "window_m": 5.0, "max_gradient_pct": 29.940050688447286, "diagnostic": false, "flags": [ "suppression_unstable", "canopy_or_structure" ], "start_distance_m": 995.0, "end_distance_m": 1000.0, "start_elevation_m": 204.81667639306406, "end_elevation_m": 206.31367892748642, "min_gradient_pct": -7.711562532977041 }, { "window_m": 10.0, "max_gradient_pct": 23.58393637976036, "diagnostic": false, "flags": [], "start_distance_m": 757.0, "end_distance_m": 767.0, "start_elevation_m": 172.0090536082247, "end_elevation_m": 174.36744724620073, "min_gradient_pct": -5.5636395231334745 }, { "window_m": 20.0, "max_gradient_pct": 21.804281812293596, "diagnostic": false, "flags": [], "start_distance_m": 774.0, "end_distance_m": 794.0, "start_elevation_m": 175.29905396859226, "end_elevation_m": 179.65991033105098, "min_gradient_pct": -4.978239990985145 }, { "window_m": 25.0, "max_gradient_pct": 21.308888698968303, "diagnostic": false, "flags": [], "start_distance_m": 773.0, "end_distance_m": 798.0, "start_elevation_m": 175.0961007316978, "end_elevation_m": 180.42332290643986, "min_gradient_pct": -4.734476643782841 }, { "window_m": 50.0, "max_gradient_pct": 20.25325214358901, "diagnostic": false, "flags": [], "start_distance_m": 745.0, "end_distance_m": 795.0, "start_elevation_m": 169.74276035297757, "end_elevation_m": 179.86938642477207, "min_gradient_pct": -3.282772774885075 }, { "window_m": 100.0, "max_gradient_pct": 18.41631521180932, "diagnostic": false, "flags": [], "start_distance_m": 708.0, "end_distance_m": 808.0, "start_elevation_m": 163.71997101271387, "end_elevation_m": 182.1362862245232, "min_gradient_pct": 0.7950371222676438 } ], "shape": { "ascent_concentration": 0.45, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 156.0, "shape_class": "stepped" }, "length_m": 1093.6133204752525, "start_elevation_m": 129.85059442748974, "end_elevation_m": 215.28863608272522, "endpoint_gain_m": 85.43804165523548, "overall_gradient_pct": 7.812454370810571, "accumulated_ascent_m": 88.46666692264523, "window_maxima": { "max_5m": { "gradient_pct": 29.940050688447286, "start_distance_m": 995.0, "end_distance_m": 1000.0, "midpoint_distance_m": 997.5, "start_elevation_m": 204.81667639306406, "end_elevation_m": 206.31367892748642, "start_xy": [ 526987.3645279674, 6375479.24837939 ], "end_xy": [ 526982.6214039827, 6375480.830395466 ] }, "max_10m": { "gradient_pct": 23.58393637976036, "start_distance_m": 757.0, "end_distance_m": 767.0, "midpoint_distance_m": 762.0, "start_elevation_m": 172.0090536082247, "end_elevation_m": 174.36744724620073, "start_xy": [ 526942.9731898311, 6375663.74779707 ], "end_xy": [ 526934.2772325582, 6375658.810153188 ] }, "max_20m": { "gradient_pct": 21.804281812293596, "start_distance_m": 774.0, "end_distance_m": 794.0, "midpoint_distance_m": 784.0, "start_elevation_m": 175.29905396859226, "end_elevation_m": 179.65991033105098, "start_xy": [ 526928.1900624672, 6375655.3538024705 ], "end_xy": [ 526910.8506806717, 6375645.426493397 ] }, "max_25m": { "gradient_pct": 21.308888698968303, "start_distance_m": 773.0, "end_distance_m": 798.0, "midpoint_distance_m": 785.5, "start_elevation_m": 175.0961007316978, "end_elevation_m": 180.42332290643986, "start_xy": [ 526929.0596581945, 6375655.847566859 ], "end_xy": [ 526908.9097468567, 6375641.928954844 ] }, "max_50m": { "gradient_pct": 20.25325214358901, "start_distance_m": 745.0, "end_distance_m": 795.0, "midpoint_distance_m": 770.0, "start_elevation_m": 169.74276035297757, "end_elevation_m": 179.86938642477207, "start_xy": [ 526951.6610966194, 6375671.391011363 ], "end_xy": [ 526910.365447218, 6375644.552108759 ] }, "max_100m": { "gradient_pct": 18.41631521180932, "start_distance_m": 708.0, "end_distance_m": 808.0, "midpoint_distance_m": 758.0, "start_elevation_m": 163.71997101271387, "end_elevation_m": 182.1362862245232, "start_xy": [ 526959.4733985795, 6375705.271748504 ], "end_xy": [ 526904.2700002128, 6375633.1740653785 ] } }, "window_minima": { "min_5m": { "gradient_pct": -7.711562532977041, "start_distance_m": 1081.0, "end_distance_m": 1086.0, "midpoint_distance_m": 1083.5, "start_elevation_m": 215.98436502460487, "end_elevation_m": 215.59878689795602, "start_xy": [ 526931.2083520442, 6375472.019579346 ], "end_xy": [ 526934.8844847382, 6375468.630472028 ] }, "min_10m": { "gradient_pct": -5.5636395231334745, "start_distance_m": 1078.0, "end_distance_m": 1088.0, "midpoint_distance_m": 1083.0, "start_elevation_m": 216.06534397204877, "end_elevation_m": 215.50898001973542, "start_xy": [ 526930.2202506824, 6375474.687360962 ], "end_xy": [ 526936.3549378158, 6375467.274829101 ] }, "min_20m": { "gradient_pct": -4.978239990985145, "start_distance_m": 591.0, "end_distance_m": 611.0, "midpoint_distance_m": 601.0, "start_elevation_m": 157.51118002229464, "end_elevation_m": 156.5155320240976, "start_xy": [ 526969.7361502814, 6375807.698926083 ], "end_xy": [ 526960.0768783861, 6375790.186117443 ] }, "min_25m": { "gradient_pct": -4.734476643782841, "start_distance_m": 588.0, "end_distance_m": 613.0, "midpoint_distance_m": 600.5, "start_elevation_m": 157.6277219587908, "end_elevation_m": 156.4441027978451, "start_xy": [ 526971.1850410657, 6375810.325847379 ], "end_xy": [ 526959.1109511965, 6375788.434836579 ] }, "min_50m": { "gradient_pct": -3.282772774885075, "start_distance_m": 578.0, "end_distance_m": 628.0, "midpoint_distance_m": 603.0, "start_elevation_m": 157.74574324742167, "end_elevation_m": 156.10435685997913, "start_xy": [ 526975.4467065439, 6375819.307293886 ], "end_xy": [ 526951.8664972751, 6375775.300230099 ] }, "min_100m": { "gradient_pct": 0.7950371222676438, "start_distance_m": 549.0, "end_distance_m": 649.0, "midpoint_distance_m": 599.0, "start_elevation_m": 156.27776969309022, "end_elevation_m": 157.07280681535786, "start_xy": [ 526982.6341717796, 6375847.402495318 ], "end_xy": [ 526941.7242617849, 6375756.911781027 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 48.31265290213054, "start_distance_m": 997.0, "end_distance_m": 999.0, "midpoint_distance_m": 998.0, "start_elevation_m": 205.22256844906093, "end_elevation_m": 206.18882150710354, "start_xy": [ 526985.4672783735, 6375479.88118582 ], "end_xy": [ 526983.5700287797, 6375480.513992251 ] }, "max_3m": { "gradient_pct": 41.095151031020315, "start_distance_m": 996.0, "end_distance_m": 999.0, "midpoint_distance_m": 997.5, "start_elevation_m": 204.95596697617293, "end_elevation_m": 206.18882150710354, "start_xy": [ 526986.4159031705, 6375479.564782605 ], "end_xy": [ 526983.5700287797, 6375480.513992251 ] } }, "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": { "texture_windows": { "rounds": 0, "windows_masked": [], "advisory": [], "unresolved": [], "unstable": [ { "window_m": 5.0, "start_m": 995.0, "end_m": 1000.0, "raw_pct": 29.94, "reason": "short-step", "perturbations": [ "phase+0.000/mask+0", "phase+0.333/mask+1", "phase+0.667/mask-1" ], "perturbation_reasons": [ "short-step", "", "" ] } ] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.119, "obstruction_max_height_m": 14.8, "flagged_windows_m": [ 2, 3, 5.0 ] }, "review": [], "extent": [] }, "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-so6", "road_pbf": "block-batch-fr-so6.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_E526-N6375_0m5@21LHD2HO-2025-02-20.tif", "data/cache/fr/ign-lidarhd_dtm_E526-N6376_0m5@21LHD2HO-2025-02-20.tif", "data/cache/fr/ign-lidarhd_dtm_E527-N6375_0m5@21LHD2HO-2025-02-20.tif", "data/cache/fr/ign-lidarhd_dtm_E527-N6376_0m5@21LHD2HO-2025-02-20.tif" ], "calculated_at": "2026-09-27T05:16:08+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-so6.osm.pbf", "osm_snapshot": "", "run_id": "fr-so6", "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": [ "E526-N6375", "E526-N6376", "E527-N6375", "E527-N6376" ], "elevation_blocks": [ "21LHD2HO@2025-02-20" ], "ign_dalles": [ "LHD_FXX_0526_6376_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0526_6377_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0527_6376_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0527_6377_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD2HO" ], "ign_editions": [ "2025-02-20" ], "ign_dsm_edition": { "LHD_FXX_0526_6376_MNT_O_0M50_LAMB93_IGN69": "2025-02-20", "LHD_FXX_0526_6377_MNT_O_0M50_LAMB93_IGN69": "2025-02-20", "LHD_FXX_0527_6376_MNT_O_0M50_LAMB93_IGN69": "2025-02-20", "LHD_FXX_0527_6377_MNT_O_0M50_LAMB93_IGN69": "2025-02-20" }, "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", "suppression_unstable": [ 5.0 ], "carriageway": { "stations": 50, "stations_resolved": 50, "width_median_m": 6.62, "width_p10_m": 2.73, "width_min_m": 2.25, "width_max_m": 12.0, "bounded_share": 0.12, "unbounded_share": 0.88, "confidence_median": 0.0, "width_median_bounded_m": 4.38, "window_m": [ 773.0, 798.0 ], "width_at_max25_m": 2.75, "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": 50, "stations_resolved": 50, "width_median_m": 10.0, "width_p10_m": 2.75, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.38, "unbounded_share": 0.62, "confidence_median": 0.0, "width_median_bounded_m": 4.25, "window_m": [ 773.0, 798.0 ], "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": "Saint-Aubin", "county": "Lot-et-Garonne", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }