{ "ocl_version": "0.1.0", "name": "Discovered lane (47.7704, 0.5309)", "slug": "discovered-lane-47-7704-0-5309", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 25.553570335506492, "diagnostic": true, "flags": [ "structure_excluded", "canopy_or_structure" ], "start_distance_m": 261.0, "end_distance_m": 263.0, "start_elevation_m": 76.03247287456836, "end_elevation_m": 76.54354428127849, "min_gradient_pct": -1.419132124504685, "suppressed_max_gradient_pct": 53.37707449412328, "suppressed_location_m": [ 0.0, 2.0 ] }, { "window_m": 3.0, "max_gradient_pct": 25.59828486483345, "diagnostic": true, "flags": [ "structure_excluded", "canopy_or_structure" ], "start_distance_m": 260.0, "end_distance_m": 263.0, "start_elevation_m": 75.77559573533348, "end_elevation_m": 76.54354428127849, "min_gradient_pct": -0.5398532026861839, "suppressed_max_gradient_pct": 36.29176873077237, "suppressed_location_m": [ 0.0, 3.0 ] }, { "window_m": 5.0, "max_gradient_pct": 24.82907304766769, "diagnostic": false, "flags": [ "structure_excluded_min", "canopy_or_structure" ], "start_distance_m": 260.0, "end_distance_m": 265.0, "start_elevation_m": 75.77559573533348, "end_elevation_m": 77.01704938771687, "min_gradient_pct": -0.24916336958753504, "suppressed_min_gradient_pct": -0.31644334500299465, "suppressed_min_location_m": [ 19.0, 24.0 ] }, { "window_m": 10.0, "max_gradient_pct": 24.32010028627772, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 248.0, "end_distance_m": 258.0, "start_elevation_m": 72.9204728580835, "end_elevation_m": 75.35248288671127, "min_gradient_pct": 0.09906754294000564 }, { "window_m": 20.0, "max_gradient_pct": 23.84812475124967, "diagnostic": false, "flags": [ "structure_excluded_min", "canopy_or_structure" ], "start_distance_m": 245.0, "end_distance_m": 265.0, "start_elevation_m": 72.24742443746693, "end_elevation_m": 77.01704938771687, "min_gradient_pct": 0.28534861989111704, "suppressed_min_gradient_pct": 0.21556634362649874, "suppressed_min_location_m": [ 20.0, 40.0 ] }, { "window_m": 25.0, "max_gradient_pct": 23.726822678267126, "diagnostic": false, "flags": [ "structure_excluded_min", "canopy_or_structure" ], "start_distance_m": 240.0, "end_distance_m": 265.0, "start_elevation_m": 71.08534371815009, "end_elevation_m": 77.01704938771687, "min_gradient_pct": 0.3006390136294783, "suppressed_min_gradient_pct": 0.2699592173967744, "suppressed_min_location_m": [ 19.0, 44.0 ] }, { "window_m": 50.0, "max_gradient_pct": 22.995239729235838, "diagnostic": false, "flags": [ "structure_excluded_min", "canopy_or_structure" ], "start_distance_m": 237.0, "end_distance_m": 287.0, "start_elevation_m": 70.40411011594045, "end_elevation_m": 81.90172998055837, "min_gradient_pct": 0.5554584514822949, "suppressed_min_gradient_pct": 0.4641276448988805, "suppressed_min_location_m": [ 13.0, 63.0 ] }, { "window_m": 100.0, "max_gradient_pct": 21.061339520119592, "diagnostic": false, "flags": [ "structure_excluded_min", "canopy_or_structure" ], "start_distance_m": 208.0, "end_distance_m": 308.0, "start_elevation_m": 64.668201869496, "end_elevation_m": 85.72954138961559, "min_gradient_pct": 0.9990931252042827, "suppressed_min_gradient_pct": 0.9047589845534816, "suppressed_min_location_m": [ 6.0, 106.0 ] } ], "shape": { "ascent_concentration": 0.512, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 261.0, "shape_class": "stepped" }, "length_m": 557.359763068522, "start_elevation_m": 59.465550133252904, "end_elevation_m": 111.36529042806214, "endpoint_gain_m": 51.899740294809234, "overall_gradient_pct": 9.311712781180557, "accumulated_ascent_m": 52.20417370032823, "window_maxima": { "max_5m": { "gradient_pct": 24.82907304766769, "start_distance_m": 260.0, "end_distance_m": 265.0, "midpoint_distance_m": 262.5, "start_elevation_m": 75.77559573533348, "end_elevation_m": 77.01704938771687, "start_xy": [ 515233.8305066863, 6743991.083711492 ], "end_xy": [ 515228.8306588198, 6743991.044707487 ] }, "max_10m": { "gradient_pct": 24.32010028627772, "start_distance_m": 248.0, "end_distance_m": 258.0, "midpoint_distance_m": 253.0, "start_elevation_m": 72.9204728580835, "end_elevation_m": 75.35248288671127, "start_xy": [ 515245.83014156576, 6743991.1773211025 ], "end_xy": [ 515235.83044583286, 6743991.099313093 ] }, "max_20m": { "gradient_pct": 23.84812475124967, "start_distance_m": 245.0, "end_distance_m": 265.0, "midpoint_distance_m": 255.0, "start_elevation_m": 72.24742443746693, "end_elevation_m": 77.01704938771687, "start_xy": [ 515248.8300502856, 6743991.200723505 ], "end_xy": [ 515228.8306588198, 6743991.044707487 ] }, "max_25m": { "gradient_pct": 23.726822678267126, "start_distance_m": 240.0, "end_distance_m": 265.0, "midpoint_distance_m": 252.5, "start_elevation_m": 71.08534371815009, "end_elevation_m": 77.01704938771687, "start_xy": [ 515253.8298981521, 6743991.239727509 ], "end_xy": [ 515228.8306588198, 6743991.044707487 ] }, "max_50m": { "gradient_pct": 22.995239729235838, "start_distance_m": 237.0, "end_distance_m": 287.0, "midpoint_distance_m": 262.0, "start_elevation_m": 70.40411011594045, "end_elevation_m": 81.90172998055837, "start_xy": [ 515256.82980687195, 6743991.263129912 ], "end_xy": [ 515206.92149821826, 6743992.6437408775 ] }, "max_100m": { "gradient_pct": 21.061339520119592, "start_distance_m": 208.0, "end_distance_m": 308.0, "midpoint_distance_m": 258.0, "start_elevation_m": 64.668201869496, "end_elevation_m": 85.72954138961559, "start_xy": [ 515285.82892449736, 6743991.489353138 ], "end_xy": [ 515186.0644930966, 6743995.06944396 ] } }, "window_minima": { "min_5m": { "gradient_pct": -0.24916336958753504, "start_distance_m": 27.0, "end_distance_m": 32.0, "midpoint_distance_m": 29.5, "start_elevation_m": 60.72439355559966, "end_elevation_m": 60.711935387120285, "start_xy": [ 515432.1045611296, 6743928.898707161 ], "end_xy": [ 515427.2570724499, 6743930.124208487 ] }, "min_10m": { "gradient_pct": 0.09906754294000564, "start_distance_m": 25.0, "end_distance_m": 35.0, "midpoint_distance_m": 30.0, "start_elevation_m": 60.72809012983239, "end_elevation_m": 60.73799688412639, "start_xy": [ 515434.0435566015, 6743928.408506631 ], "end_xy": [ 515424.34857924207, 6743930.859509283 ] }, "min_20m": { "gradient_pct": 0.28534861989111704, "start_distance_m": 25.0, "end_distance_m": 45.0, "midpoint_distance_m": 35.0, "start_elevation_m": 60.72809012983239, "end_elevation_m": 60.78515985381061, "start_xy": [ 515434.0435566015, 6743928.408506631 ], "end_xy": [ 515414.6536018827, 6743933.310511935 ] }, "min_25m": { "gradient_pct": 0.3006390136294783, "start_distance_m": 25.0, "end_distance_m": 50.0, "midpoint_distance_m": 37.5, "start_elevation_m": 60.72809012983239, "end_elevation_m": 60.80324988323976, "start_xy": [ 515434.0435566015, 6743928.408506631 ], "end_xy": [ 515409.80611320294, 6743934.5360132605 ] }, "min_50m": { "gradient_pct": 0.5554584514822949, "start_distance_m": 21.0, "end_distance_m": 71.0, "midpoint_distance_m": 46.0, "start_elevation_m": 60.6940489602214, "end_elevation_m": 60.97177818596255, "start_xy": [ 515437.92154754524, 6743927.428105569 ], "end_xy": [ 515389.4466607482, 6743939.68311883 ] }, "min_100m": { "gradient_pct": 0.9990931252042827, "start_distance_m": 22.0, "end_distance_m": 122.0, "midpoint_distance_m": 72.0, "start_elevation_m": 60.70068819269734, "end_elevation_m": 61.699781317901625, "start_xy": [ 515436.95204980933, 6743927.673205835 ], "end_xy": [ 515340.0022762152, 6743952.183232356 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 25.553570335506492, "start_distance_m": 261.0, "end_distance_m": 263.0, "midpoint_distance_m": 262.0, "start_elevation_m": 76.03247287456836, "end_elevation_m": 76.54354428127849, "start_xy": [ 515232.830537113, 6743991.075910691 ], "end_xy": [ 515230.83059796644, 6743991.060309089 ] }, "max_3m": { "gradient_pct": 25.59828486483345, "start_distance_m": 260.0, "end_distance_m": 263.0, "midpoint_distance_m": 261.5, "start_elevation_m": 75.77559573533348, "end_elevation_m": 76.54354428127849, "start_xy": [ 515233.8305066863, 6743991.083711492 ], "end_xy": [ 515230.83059796644, 6743991.060309089 ] } }, "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": { "structure_suppression": { "masked_fraction": 0.038, "windows_resited": [ 2.0, 3.0 ], "windows_unresolved": [], "minima_resited": [ 5.0, 20.0, 25.0, 50.0, 100.0 ], "minima_unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.286, "obstruction_max_height_m": 18.98, "flagged_windows_m": [ 2, 3, 5, 10, 20, 25, 50, 100 ] }, "excluded_ranges_m": [ [ 0.0, 20.0 ] ], "review": [], "extent": [] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "11607044e533e467c5c753c7fffd2d09371a473e", "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-no6", "road_pbf": "block-batch-fr-no6.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": "sha256:396cc16291f947a7" }, "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_E514-N6743_0m5@23LHD2HG-2024-12-20.tif", "data/cache/fr/ign-lidarhd_dtm_E514-N6744_0m5@23LHD2HG-2024-12-20.tif", "data/cache/fr/ign-lidarhd_dtm_E515-N6743_0m5@23LHD2HG-2024-12-20.tif", "data/cache/fr/ign-lidarhd_dtm_E515-N6744_0m5@23LHD2HG-2024-12-20.tif" ], "calculated_at": "2026-09-26T00:41:54+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-no6.osm.pbf", "osm_snapshot": "", "run_id": "fr-no6", "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": [ "E514-N6743", "E514-N6744", "E515-N6743", "E515-N6744" ], "elevation_blocks": [ "23LHD2HG@2024-12-20" ], "ign_dalles": [ "LHD_FXX_0514_6744_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0514_6745_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0515_6744_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0515_6745_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "23LHD2HG" ], "ign_editions": [ "2024-12-20" ], "ign_dsm_edition": { "LHD_FXX_0514_6744_MNT_O_0M50_LAMB93_IGN69": "2024-12-20", "LHD_FXX_0514_6745_MNT_O_0M50_LAMB93_IGN69": "2024-12-20", "LHD_FXX_0515_6744_MNT_O_0M50_LAMB93_IGN69": "2024-12-20", "LHD_FXX_0515_6745_MNT_O_0M50_LAMB93_IGN69": "2024-12-20" }, "climb_origin": "discovered", "structure_own_ways": 3, "structure_mask_ranges_m": [ [ 0.0, 15.0 ] ], "carriageway": { "stations": 28, "stations_resolved": 28, "width_median_m": 5.38, "width_p10_m": 4.0, "width_min_m": 3.25, "width_max_m": 11.0, "bounded_share": 0.071, "unbounded_share": 0.929, "confidence_median": 0.0, "width_median_bounded_m": 3.62, "window_m": [ 240.0, 265.0 ], "width_at_max25_m": 4.25, "window_stations": 6, "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": 28, "stations_resolved": 28, "width_median_m": 5.38, "width_p10_m": 1.0, "width_min_m": 0.75, "width_max_m": 12.0, "bounded_share": 0.679, "unbounded_share": 0.321, "confidence_median": 1.0, "width_median_bounded_m": 2.75, "window_m": [ 240.0, 265.0 ], "width_at_max25_m": 2.38, "window_stations": 6, "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": "Chahaignes", "county": "Sarthe", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }