{ "ocl_version": "0.1.0", "name": "Discovered lane (44.8411, 1.4843)", "slug": "discovered-lane-44-8411-1-4843", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 27.911103502457024, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 475.0, "end_distance_m": 477.0, "start_elevation_m": 140.3593931375903, "end_elevation_m": 140.91761520763944, "min_gradient_pct": -20.232844677013873 }, { "window_m": 3.0, "max_gradient_pct": 22.282967418123196, "diagnostic": true, "flags": [], "start_distance_m": 1280.0, "end_distance_m": 1283.0, "start_elevation_m": 209.20250143350907, "end_elevation_m": 209.87099045605277, "min_gradient_pct": -17.41937161211335 }, { "window_m": 5.0, "max_gradient_pct": 21.82475196640496, "diagnostic": false, "flags": [], "start_distance_m": 1279.0, "end_distance_m": 1284.0, "start_elevation_m": 208.9727259155209, "end_elevation_m": 210.06396351384114, "min_gradient_pct": -9.749601733259396 }, { "window_m": 10.0, "max_gradient_pct": 20.810833823931034, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1273.0, "end_distance_m": 1283.0, "start_elevation_m": 207.78990707365966, "end_elevation_m": 209.87099045605277, "min_gradient_pct": -4.889965524480431 }, { "window_m": 20.0, "max_gradient_pct": 20.588032711281272, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1267.0, "end_distance_m": 1287.0, "start_elevation_m": 206.55064990576926, "end_elevation_m": 210.66825644802552, "min_gradient_pct": -3.471039558276061 }, { "window_m": 25.0, "max_gradient_pct": 20.25130776404808, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1261.0, "end_distance_m": 1286.0, "start_elevation_m": 205.39134178766642, "end_elevation_m": 210.45416872867844, "min_gradient_pct": -2.4815127848389693 }, { "window_m": 50.0, "max_gradient_pct": 19.89853717607639, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1264.0, "end_distance_m": 1314.0, "start_elevation_m": 205.96987384571253, "end_elevation_m": 215.91914243375072, "min_gradient_pct": -1.3912380039253094 }, { "window_m": 100.0, "max_gradient_pct": 18.803428196135826, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1217.0, "end_distance_m": 1317.0, "start_elevation_m": 197.66163628239337, "end_elevation_m": 216.4650644785292, "min_gradient_pct": -0.03316437459915278 } ], "shape": { "ascent_concentration": 0.457, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 323.0, "shape_class": "stepped" }, "length_m": 2041.9999999999072, "start_elevation_m": 123.91358643494013, "end_elevation_m": 269.9402218898733, "endpoint_gain_m": 146.0266354549332, "overall_gradient_pct": 7.151157465961794, "accumulated_ascent_m": 153.37976893224217, "window_maxima": { "max_5m": { "gradient_pct": 21.82475196640496, "start_distance_m": 1279.0, "end_distance_m": 1284.0, "midpoint_distance_m": 1281.5, "start_elevation_m": 208.9727259155209, "end_elevation_m": 210.06396351384114, "start_xy": [ 579888.5902010243, 6416246.812674426 ], "end_xy": [ 579884.7019017298, 6416243.669248174 ] }, "max_10m": { "gradient_pct": 20.810833823931034, "start_distance_m": 1273.0, "end_distance_m": 1283.0, "midpoint_distance_m": 1278.0, "start_elevation_m": 207.78990707365966, "end_elevation_m": 209.87099045605277, "start_xy": [ 579893.2561601778, 6416250.584785927 ], "end_xy": [ 579885.4795615887, 6416244.297933425 ] }, "max_20m": { "gradient_pct": 20.588032711281272, "start_distance_m": 1267.0, "end_distance_m": 1287.0, "midpoint_distance_m": 1277.0, "start_elevation_m": 206.55064990576926, "end_elevation_m": 210.66825644802552, "start_xy": [ 579897.9221193311, 6416254.356897429 ], "end_xy": [ 579882.3689221531, 6416241.783192423 ] }, "max_25m": { "gradient_pct": 20.25130776404808, "start_distance_m": 1261.0, "end_distance_m": 1286.0, "midpoint_distance_m": 1273.5, "start_elevation_m": 205.39134178766642, "end_elevation_m": 210.45416872867844, "start_xy": [ 579902.4039497704, 6416258.31331712 ], "end_xy": [ 579883.1465820121, 6416242.411877674 ] }, "max_50m": { "gradient_pct": 19.89853717607639, "start_distance_m": 1264.0, "end_distance_m": 1314.0, "midpoint_distance_m": 1289.0, "start_elevation_m": 205.96987384571253, "end_elevation_m": 215.91914243375072, "start_xy": [ 579900.2550989079, 6416256.2429531785 ], "end_xy": [ 579860.1218300434, 6416226.489725863 ] }, "max_100m": { "gradient_pct": 18.803428196135826, "start_distance_m": 1217.0, "end_distance_m": 1317.0, "midpoint_distance_m": 1267.0, "start_elevation_m": 197.66163628239337, "end_elevation_m": 216.4650644785292, "start_xy": [ 579930.5985432726, 6416292.082225359 ], "end_xy": [ 579857.6443358265, 6416224.797974579 ] } }, "window_minima": { "min_5m": { "gradient_pct": -9.749601733259396, "start_distance_m": 1749.0, "end_distance_m": 1754.0, "midpoint_distance_m": 1751.5, "start_elevation_m": 262.7794159587994, "end_elevation_m": 262.29193587213643, "start_xy": [ 579497.4581588287, 6415991.403579623 ], "end_xy": [ 579494.441467641, 6415987.416152598 ] }, "min_10m": { "gradient_pct": -4.889965524480431, "start_distance_m": 1747.0, "end_distance_m": 1757.0, "midpoint_distance_m": 1752.0, "start_elevation_m": 262.6933761770358, "end_elevation_m": 262.2043796245878, "start_xy": [ 579498.7447089128, 6415992.933889355 ], "end_xy": [ 579492.6314529284, 6415985.023696383 ] }, "min_20m": { "gradient_pct": -3.471039558276061, "start_distance_m": 1749.0, "end_distance_m": 1769.0, "midpoint_distance_m": 1759.0, "start_elevation_m": 262.7794159587994, "end_elevation_m": 262.0852080471442, "start_xy": [ 579497.4581588287, 6415991.403579623 ], "end_xy": [ 579485.391394078, 6415975.453871524 ] }, "min_25m": { "gradient_pct": -2.4815127848389693, "start_distance_m": 1749.0, "end_distance_m": 1774.0, "midpoint_distance_m": 1761.5, "start_elevation_m": 262.7794159587994, "end_elevation_m": 262.15903776258966, "start_xy": [ 579497.4581588287, 6415991.403579623 ], "end_xy": [ 579482.3747028904, 6415971.466444499 ] }, "min_50m": { "gradient_pct": -1.3912380039253094, "start_distance_m": 1749.0, "end_distance_m": 1799.0, "midpoint_distance_m": 1774.0, "start_elevation_m": 262.7794159587994, "end_elevation_m": 262.08379695683675, "start_xy": [ 579497.4581588287, 6415991.403579623 ], "end_xy": [ 579465.797655515, 6415952.834670091 ] }, "min_100m": { "gradient_pct": -0.03316437459915278, "start_distance_m": 1716.0, "end_distance_m": 1816.0, "midpoint_distance_m": 1766.0, "start_elevation_m": 262.5307012937684, "end_elevation_m": 262.49753691916925, "start_xy": [ 579519.4775572828, 6416015.970078642 ], "end_xy": [ 579452.8397315129, 6415941.909230617 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 27.911103502457024, "start_distance_m": 475.0, "end_distance_m": 477.0, "midpoint_distance_m": 476.0, "start_elevation_m": 140.3593931375903, "end_elevation_m": 140.91761520763944, "start_xy": [ 580250.7929343714, 6416931.285919235 ], "end_xy": [ 580248.857829244, 6416930.7805796005 ] }, "max_3m": { "gradient_pct": 22.282967418123196, "start_distance_m": 1280.0, "end_distance_m": 1283.0, "midpoint_distance_m": 1281.5, "start_elevation_m": 209.20250143350907, "end_elevation_m": 209.87099045605277, "start_xy": [ 579887.8125411654, 6416246.183989176 ], "end_xy": [ 579885.4795615887, 6416244.297933425 ] } }, "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": 0.439, "obstruction_max_height_m": 15.69, "flagged_windows_m": [ 2, 10, 20, 25, 50, 100 ] }, "review": [], "extent": [] }, "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-mc1", "road_pbf": "block-batch-fr-mc1.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_E579-N6415_0m5@21LHD2IN-2025-03-14.tif", "data/cache/fr/ign-lidarhd_dtm_E579-N6416_0m5@21LHD2IN-2025-03-14.tif", "data/cache/fr/ign-lidarhd_dtm_E579-N6417_0m5@21LHD2IN-2025-03-14.tif", "data/cache/fr/ign-lidarhd_dtm_E580-N6416_0m5@21LHD2IN-2025-03-14.tif", "data/cache/fr/ign-lidarhd_dtm_E580-N6417_0m5@21LHD2IN-2025-03-14.tif" ], "calculated_at": "2026-09-22T17:09:41+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc1.osm.pbf", "osm_snapshot": "", "run_id": "fr-mc1", "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": [ "E579-N6415", "E579-N6416", "E579-N6417", "E580-N6416", "E580-N6417" ], "elevation_blocks": [ "21LHD2IN@2025-03-14" ], "ign_dalles": [ "LHD_FXX_0579_6416_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0579_6417_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0579_6418_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0580_6417_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0580_6418_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD2IN" ], "ign_editions": [ "2025-03-14" ], "ign_dsm_edition": { "LHD_FXX_0579_6416_MNT_O_0M50_LAMB93_IGN69": "2025-03-14", "LHD_FXX_0579_6417_MNT_O_0M50_LAMB93_IGN69": "2025-03-14", "LHD_FXX_0579_6418_MNT_O_0M50_LAMB93_IGN69": "2025-03-14", "LHD_FXX_0580_6417_MNT_O_0M50_LAMB93_IGN69": "2025-03-14", "LHD_FXX_0580_6418_MNT_O_0M50_LAMB93_IGN69": "2025-03-14" }, "route_summit_trim_m": 225.2, "route_summit_trim_loss_m": 10.7, "climb_origin": "discovered", "structure_own_ways": 4, "carriageway": { "stations": 88, "stations_resolved": 88, "width_median_m": 4.25, "width_p10_m": 2.43, "width_min_m": 1.25, "width_max_m": 11.0, "bounded_share": 0.284, "unbounded_share": 0.716, "confidence_median": 0.0, "width_median_bounded_m": 4.0, "window_m": [ 1261.0, 1286.0 ], "width_at_max25_m": 3.25, "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": 88, "stations_resolved": 88, "width_median_m": 2.5, "width_p10_m": 0.5, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.932, "unbounded_share": 0.068, "confidence_median": 1.0, "width_median_bounded_m": 2.25, "window_m": [ 1261.0, 1286.0 ], "width_at_max25_m": 2.75, "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": "Loupiac", "county": "Lot", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }