{ "ocl_version": "0.1.0", "name": "Discovered lane (45.5920, 2.7714)", "slug": "discovered-lane-45-5920-2-7714", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 22.982944750543766, "diagnostic": true, "flags": [], "start_distance_m": 466.0, "end_distance_m": 468.0, "start_elevation_m": 956.1609666100488, "end_elevation_m": 956.6206255050597, "min_gradient_pct": -4.048178285921722 }, { "window_m": 3.0, "max_gradient_pct": 22.530057298323907, "diagnostic": true, "flags": [], "start_distance_m": 462.0, "end_distance_m": 465.0, "start_elevation_m": 955.2736559743415, "end_elevation_m": 955.9495576932912, "min_gradient_pct": -3.674003261858161 }, { "window_m": 5.0, "max_gradient_pct": 22.441483984143815, "diagnostic": false, "flags": [], "start_distance_m": 463.0, "end_distance_m": 468.0, "start_elevation_m": 955.4985513058525, "end_elevation_m": 956.6206255050597, "min_gradient_pct": -2.412070087448228 }, { "window_m": 10.0, "max_gradient_pct": 21.985958593667192, "diagnostic": false, "flags": [], "start_distance_m": 458.0, "end_distance_m": 468.0, "start_elevation_m": 954.422029645693, "end_elevation_m": 956.6206255050597, "min_gradient_pct": -1.0218276075625 }, { "window_m": 20.0, "max_gradient_pct": 21.17606955139422, "diagnostic": false, "flags": [], "start_distance_m": 452.0, "end_distance_m": 472.0, "start_elevation_m": 953.2191053715751, "end_elevation_m": 957.4543192818539, "min_gradient_pct": -0.9427547812606463 }, { "window_m": 25.0, "max_gradient_pct": 20.977768950224345, "diagnostic": false, "flags": [], "start_distance_m": 448.0, "end_distance_m": 473.0, "start_elevation_m": 952.4052341767252, "end_elevation_m": 957.6496764142813, "min_gradient_pct": 0.029135424067135318 }, { "window_m": 50.0, "max_gradient_pct": 19.7202667153324, "diagnostic": false, "flags": [], "start_distance_m": 442.0, "end_distance_m": 492.0, "start_elevation_m": 951.2751753774784, "end_elevation_m": 961.1353087351446, "min_gradient_pct": 1.3681716101491475 }, { "window_m": 100.0, "max_gradient_pct": 18.247305927459138, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 401.0, "end_distance_m": 501.0, "start_elevation_m": 944.3777880207283, "end_elevation_m": 962.6250939481874, "min_gradient_pct": 1.713818560040636 } ], "shape": { "ascent_concentration": 0.557, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 155.0, "shape_class": "stepped" }, "length_m": 653.6192995808415, "start_elevation_m": 927.104820732415, "end_elevation_m": 976.6708556523279, "endpoint_gain_m": 49.56603491991291, "overall_gradient_pct": 7.583318753240462, "accumulated_ascent_m": 49.91604001745884, "window_maxima": { "max_5m": { "gradient_pct": 22.441483984143815, "start_distance_m": 463.0, "end_distance_m": 468.0, "midpoint_distance_m": 465.5, "start_elevation_m": 955.4985513058525, "end_elevation_m": 956.6206255050597, "start_xy": [ 682216.0889967036, 6499176.532287468 ], "end_xy": [ 682211.8053468699, 6499179.111113577 ] }, "max_10m": { "gradient_pct": 21.985958593667192, "start_distance_m": 458.0, "end_distance_m": 468.0, "midpoint_distance_m": 463.0, "start_elevation_m": 954.422029645693, "end_elevation_m": 956.6206255050597, "start_xy": [ 682220.3726465374, 6499173.953461359 ], "end_xy": [ 682211.8053468699, 6499179.111113577 ] }, "max_20m": { "gradient_pct": 21.17606955139422, "start_distance_m": 452.0, "end_distance_m": 472.0, "midpoint_distance_m": 462.0, "start_elevation_m": 953.2191053715751, "end_elevation_m": 957.4543192818539, "start_xy": [ 682225.513026338, 6499170.858870028 ], "end_xy": [ 682208.3784270028, 6499181.174174464 ] }, "max_25m": { "gradient_pct": 20.977768950224345, "start_distance_m": 448.0, "end_distance_m": 473.0, "midpoint_distance_m": 460.5, "start_elevation_m": 952.4052341767252, "end_elevation_m": 957.6496764142813, "start_xy": [ 682228.939946205, 6499168.79580914 ], "end_xy": [ 682207.521697036, 6499181.689939686 ] }, "max_50m": { "gradient_pct": 19.7202667153324, "start_distance_m": 442.0, "end_distance_m": 492.0, "midpoint_distance_m": 467.0, "start_elevation_m": 951.2751753774784, "end_elevation_m": 961.1353087351446, "start_xy": [ 682234.0803260056, 6499165.70121781 ], "end_xy": [ 682190.1197379571, 6499189.293216728 ] }, "max_100m": { "gradient_pct": 18.247305927459138, "start_distance_m": 401.0, "end_distance_m": 501.0, "midpoint_distance_m": 451.0, "start_elevation_m": 944.3777880207283, "end_elevation_m": 962.6250939481874, "start_xy": [ 682270.2609642256, 6499146.53000472 ], "end_xy": [ 682181.8450394588, 6499192.832901002 ] } }, "window_minima": { "min_5m": { "gradient_pct": -2.412070087448228, "start_distance_m": 647.0, "end_distance_m": 652.0, "midpoint_distance_m": 649.5, "start_elevation_m": 976.7796116487887, "end_elevation_m": 976.6590081444162, "start_xy": [ 682053.7265495104, 6499258.666312519 ], "end_xy": [ 682050.7167525812, 6499262.658946042 ] }, "min_10m": { "gradient_pct": -1.0218276075625, "start_distance_m": 642.0, "end_distance_m": 652.0, "midpoint_distance_m": 647.0, "start_elevation_m": 976.7611909051725, "end_elevation_m": 976.6590081444162, "start_xy": [ 682056.7363464396, 6499254.673678997 ], "end_xy": [ 682050.7167525812, 6499262.658946042 ] }, "min_20m": { "gradient_pct": -0.9427547812606463, "start_distance_m": 633.0, "end_distance_m": 653.0, "midpoint_distance_m": 643.0, "start_elevation_m": 976.8505062976917, "end_elevation_m": 976.6619553414396, "start_xy": [ 682063.0655261824, 6499248.303650929 ], "end_xy": [ 682050.1147931953, 6499263.457472746 ] }, "min_25m": { "gradient_pct": 0.029135424067135318, "start_distance_m": 628.0, "end_distance_m": 653.0, "midpoint_distance_m": 640.5, "start_elevation_m": 976.6546714854228, "end_elevation_m": 976.6619553414396, "start_xy": [ 682066.7048729446, 6499244.875071756 ], "end_xy": [ 682050.1147931953, 6499263.457472746 ] }, "min_50m": { "gradient_pct": 1.3681716101491475, "start_distance_m": 0.0, "end_distance_m": 50.0, "midpoint_distance_m": 25.0, "start_elevation_m": 927.104820732415, "end_elevation_m": 927.7889065374895, "start_xy": [ 681997.236, 6499180.105 ], "end_xy": [ 682044.5994228594, 6499164.082947228 ] }, "min_100m": { "gradient_pct": 1.713818560040636, "start_distance_m": 0.0, "end_distance_m": 100.0, "midpoint_distance_m": 50.0, "start_elevation_m": 927.104820732415, "end_elevation_m": 928.8186392924556, "start_xy": [ 681997.236, 6499180.105 ], "end_xy": [ 682091.9628457187, 6499148.060894456 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 22.982944750543766, "start_distance_m": 466.0, "end_distance_m": 468.0, "midpoint_distance_m": 467.0, "start_elevation_m": 956.1609666100488, "end_elevation_m": 956.6206255050597, "start_xy": [ 682213.5188068034, 6499178.079583134 ], "end_xy": [ 682211.8053468699, 6499179.111113577 ] }, "max_3m": { "gradient_pct": 22.530057298323907, "start_distance_m": 462.0, "end_distance_m": 465.0, "midpoint_distance_m": 463.5, "start_elevation_m": 955.2736559743415, "end_elevation_m": 955.9495576932912, "start_xy": [ 682216.9457266704, 6499176.016522246 ], "end_xy": [ 682214.3755367701, 6499177.563817912 ] } }, "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": 0.06, "obstruction_max_height_m": 19.54, "flagged_windows_m": [ 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-mc4", "road_pbf": "block-batch-fr-mc4.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_E681-N6499_0m5@22LHD3KL-2025-09-19.tif", "data/cache/fr/ign-lidarhd_dtm_E682-N6499_0m5@22LHD3KL-2025-09-19.tif" ], "calculated_at": "2026-09-22T16:45:28+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc4.osm.pbf", "osm_snapshot": "", "run_id": "fr-mc4", "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": [ "E681-N6499", "E682-N6499" ], "elevation_blocks": [ "22LHD3KL@2025-09-19" ], "ign_dalles": [ "LHD_FXX_0681_6500_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0682_6500_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "22LHD3KL" ], "ign_editions": [ "2025-09-19" ], "ign_dsm_edition": { "LHD_FXX_0681_6500_MNT_O_0M50_LAMB93_IGN69": "2025-09-19", "LHD_FXX_0682_6500_MNT_O_0M50_LAMB93_IGN69": "2025-09-19" }, "climb_origin": "discovered", "structure_own_ways": 3, "carriageway": { "stations": 33, "stations_resolved": 33, "width_median_m": 5.25, "width_p10_m": 3.3, "width_min_m": 2.75, "width_max_m": 11.25, "bounded_share": 0.455, "unbounded_share": 0.545, "confidence_median": 0.0, "width_median_bounded_m": 4.25, "window_m": [ 448.0, 473.0 ], "width_at_max25_m": 4.25, "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": 33, "stations_resolved": 33, "width_median_m": 7.0, "width_p10_m": 3.3, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.758, "unbounded_share": 0.242, "confidence_median": 1.0, "width_median_bounded_m": 5.75, "window_m": [ 448.0, 473.0 ], "width_at_max25_m": 5.0, "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": "Mont-Dore", "county": "Puy-de-D\u00f4me", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }