{ "ocl_version": "0.1.0", "name": "Chemin de S\u00e8ges \u00e0 la Madeleine", "slug": "chemin-de-seges-a-la-madeleine", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 35.12582457489799, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 275.0, "end_distance_m": 277.0, "start_elevation_m": 118.64302758337323, "end_elevation_m": 119.34554407487119, "min_gradient_pct": -11.123553973734346 }, { "window_m": 3.0, "max_gradient_pct": 34.54497969766521, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 274.0, "end_distance_m": 277.0, "start_elevation_m": 118.30919468394123, "end_elevation_m": 119.34554407487119, "min_gradient_pct": -6.927325069643094 }, { "window_m": 5.0, "max_gradient_pct": 31.250854455820445, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 273.0, "end_distance_m": 278.0, "start_elevation_m": 118.09281558244811, "end_elevation_m": 119.65535830523913, "min_gradient_pct": -2.525250764853979 }, { "window_m": 10.0, "max_gradient_pct": 25.59194499549534, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 273.0, "end_distance_m": 283.0, "start_elevation_m": 118.09281558244811, "end_elevation_m": 120.65201008199764, "min_gradient_pct": 0.3668639779832006 }, { "window_m": 20.0, "max_gradient_pct": 21.211282035140897, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 154.0, "end_distance_m": 174.0, "start_elevation_m": 97.91038594721878, "end_elevation_m": 102.15264235424696, "min_gradient_pct": 0.7113519037190486 }, { "window_m": 25.0, "max_gradient_pct": 21.120753381748727, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 153.0, "end_distance_m": 178.0, "start_elevation_m": 97.69099182160207, "end_elevation_m": 102.97118016703925, "min_gradient_pct": 0.7227321396482012 }, { "window_m": 50.0, "max_gradient_pct": 20.114435985116558, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 144.0, "end_distance_m": 194.0, "start_elevation_m": 95.90263744054404, "end_elevation_m": 105.95985543310232, "min_gradient_pct": 0.8126647434866641 }, { "window_m": 100.0, "max_gradient_pct": 18.307162277578882, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 112.0, "end_distance_m": 212.0, "start_elevation_m": 90.56153458314516, "end_elevation_m": 108.86869686072404, "min_gradient_pct": 1.0974567254417025 } ], "shape": { "ascent_concentration": 0.48, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 239.0, "shape_class": "stepped" }, "length_m": 1127.7798615695299, "start_elevation_m": 81.0704563271541, "end_elevation_m": 176.94930496703745, "endpoint_gain_m": 95.87884863988334, "overall_gradient_pct": 8.501557077499935, "accumulated_ascent_m": 96.2537603788446, "window_maxima": { "max_5m": { "gradient_pct": 31.250854455820445, "start_distance_m": 273.0, "end_distance_m": 278.0, "midpoint_distance_m": 275.5, "start_elevation_m": 118.09281558244811, "end_elevation_m": 119.65535830523913, "start_xy": [ 543762.7663333433, 6336247.91079507 ], "end_xy": [ 543757.7822051715, 6336248.308873412 ] }, "max_10m": { "gradient_pct": 25.59194499549534, "start_distance_m": 273.0, "end_distance_m": 283.0, "midpoint_distance_m": 278.0, "start_elevation_m": 118.09281558244811, "end_elevation_m": 120.65201008199764, "start_xy": [ 543762.7663333433, 6336247.91079507 ], "end_xy": [ 543752.7877824991, 6336248.38061973 ] }, "max_20m": { "gradient_pct": 21.211282035140897, "start_distance_m": 154.0, "end_distance_m": 174.0, "midpoint_distance_m": 164.0, "start_elevation_m": 97.91038594721878, "end_elevation_m": 102.15264235424696, "start_xy": [ 543880.5783166117, 6336254.90496617 ], "end_xy": [ 543860.9997709738, 6336250.820783179 ] }, "max_25m": { "gradient_pct": 21.120753381748727, "start_distance_m": 153.0, "end_distance_m": 178.0, "midpoint_distance_m": 165.5, "start_elevation_m": 97.69099182160207, "end_elevation_m": 102.97118016703925, "start_xy": [ 543881.5572438936, 6336255.109175319 ], "end_xy": [ 543857.0840618461, 6336250.003946581 ] }, "max_50m": { "gradient_pct": 20.114435985116558, "start_distance_m": 144.0, "end_distance_m": 194.0, "midpoint_distance_m": 169.0, "start_elevation_m": 95.90263744054404, "end_elevation_m": 105.95985543310232, "start_xy": [ 543890.3675894308, 6336256.947057665 ], "end_xy": [ 543841.4212253358, 6336246.736600189 ] }, "max_100m": { "gradient_pct": 18.307162277578882, "start_distance_m": 112.0, "end_distance_m": 212.0, "midpoint_distance_m": 162.0, "start_elevation_m": 90.56153458314516, "end_elevation_m": 108.86869686072404, "start_xy": [ 543921.6932624514, 6336263.48175045 ], "end_xy": [ 543823.5826077068, 6336244.550367947 ] } }, "window_minima": { "min_5m": { "gradient_pct": -2.525250764853979, "start_distance_m": 317.0, "end_distance_m": 322.0, "midpoint_distance_m": 319.5, "start_elevation_m": 125.81268728098966, "end_elevation_m": 125.68642474274696, "start_xy": [ 543719.2318122241, 6336243.807252786 ], "end_xy": [ 543714.8058216597, 6336241.490732555 ] }, "min_10m": { "gradient_pct": 0.3668639779832006, "start_distance_m": 811.0, "end_distance_m": 821.0, "midpoint_distance_m": 816.0, "start_elevation_m": 163.40600326204606, "end_elevation_m": 163.44268965984438, "start_xy": [ 543259.66727814, 6336227.289848487 ], "end_xy": [ 543249.6825691857, 6336226.737049157 ] }, "min_20m": { "gradient_pct": 0.7113519037190486, "start_distance_m": 810.0, "end_distance_m": 830.0, "midpoint_distance_m": 820.0, "start_elevation_m": 163.4057627420046, "end_elevation_m": 163.54803312274842, "start_xy": [ 543260.6657490353, 6336227.34512842 ], "end_xy": [ 543240.6963311268, 6336226.23952976 ] }, "min_25m": { "gradient_pct": 0.7227321396482012, "start_distance_m": 810.0, "end_distance_m": 835.0, "midpoint_distance_m": 822.5, "start_elevation_m": 163.4057627420046, "end_elevation_m": 163.58644577691666, "start_xy": [ 543260.6657490353, 6336227.34512842 ], "end_xy": [ 543235.7039766498, 6336225.963130095 ] }, "min_50m": { "gradient_pct": 0.8126647434866641, "start_distance_m": 803.0, "end_distance_m": 853.0, "midpoint_distance_m": 828.0, "start_elevation_m": 163.32785202940994, "end_elevation_m": 163.73418440115327, "start_xy": [ 543267.6550453033, 6336227.732087951 ], "end_xy": [ 543217.7315005321, 6336224.968091301 ] }, "min_100m": { "gradient_pct": 1.0974567254417025, "start_distance_m": 772.0, "end_distance_m": 872.0, "midpoint_distance_m": 822.0, "start_elevation_m": 162.88610703874602, "end_elevation_m": 163.98356376418772, "start_xy": [ 543298.6076430614, 6336229.445765874 ], "end_xy": [ 543198.7605535191, 6336223.9177725725 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 35.12582457489799, "start_distance_m": 275.0, "end_distance_m": 277.0, "midpoint_distance_m": 276.0, "start_elevation_m": 118.64302758337323, "end_elevation_m": 119.34554407487119, "start_xy": [ 543760.7726820747, 6336248.070026407 ], "end_xy": [ 543758.7790308059, 6336248.229257744 ] }, "max_3m": { "gradient_pct": 34.54497969766521, "start_distance_m": 274.0, "end_distance_m": 277.0, "midpoint_distance_m": 275.5, "start_elevation_m": 118.30919468394123, "end_elevation_m": 119.34554407487119, "start_xy": [ 543761.769507709, 6336247.990410739 ], "end_xy": [ 543758.7790308059, 6336248.229257744 ] } }, "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": 0.336, "obstruction_max_height_m": 21.08, "flagged_windows_m": [ 2, 3, 5, 10, 20, 25, 50, 100 ] }, "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-so7", "road_pbf": "block-batch-fr-so7.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_E542-N6336_0m5@21LHD2IO-2025-04-02.tif", "data/cache/fr/ign-lidarhd_dtm_E543-N6336_0m5@21LHD2IO-2025-04-02.tif", "data/cache/fr/ign-lidarhd_dtm_E544-N6336_0m5@21LHD2IO-2025-04-02.tif" ], "calculated_at": "2026-09-27T05:09:37+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-so7.osm.pbf", "osm_snapshot": "", "run_id": "fr-so7", "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": [ "E542-N6336", "E543-N6336", "E544-N6336" ], "elevation_blocks": [ "21LHD2IO@2025-04-02" ], "ign_dalles": [ "LHD_FXX_0542_6337_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0543_6337_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0544_6337_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD2IO" ], "ign_editions": [ "2025-04-02" ], "ign_dsm_edition": { "LHD_FXX_0542_6337_MNT_O_0M50_LAMB93_IGN69": "2025-04-02", "LHD_FXX_0543_6337_MNT_O_0M50_LAMB93_IGN69": "2025-04-02", "LHD_FXX_0544_6337_MNT_O_0M50_LAMB93_IGN69": "2025-04-02" }, "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": 52, "stations_resolved": 52, "width_median_m": 5.0, "width_p10_m": 3.25, "width_min_m": 2.25, "width_max_m": 9.5, "bounded_share": 0.404, "unbounded_share": 0.596, "confidence_median": 0.0, "width_median_bounded_m": 4.0, "window_m": [ 153.0, 178.0 ], "width_at_max25_m": 4.0, "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": 52, "stations_resolved": 52, "width_median_m": 4.88, "width_p10_m": 0.53, "width_min_m": 0.0, "width_max_m": 12.0, "bounded_share": 0.673, "unbounded_share": 0.327, "confidence_median": 1.0, "width_median_bounded_m": 2.0, "window_m": [ 153.0, 178.0 ], "width_at_max25_m": 2.0, "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": "Moissac", "county": "Tarn-et-Garonne", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }