{ "ocl_version": "0.1.0", "name": "Portus d'Auzenc from Paulhac-en-Margeride", "slug": "portus-d-auzenc-from-paulhac-en-margeride", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 8.633941958521518, "diagnostic": true, "flags": [], "start_distance_m": 766.0, "end_distance_m": 768.0, "start_elevation_m": 1214.6596716577785, "end_elevation_m": 1214.832350496949, "min_gradient_pct": -0.9438172100431075 }, { "window_m": 3.0, "max_gradient_pct": 8.330897374563998, "diagnostic": true, "flags": [], "start_distance_m": 1316.0, "end_distance_m": 1319.0, "start_elevation_m": 1246.044689918373, "end_elevation_m": 1246.29461683961, "min_gradient_pct": -0.7191418353234743 }, { "window_m": 5.0, "max_gradient_pct": 7.834912996877392, "diagnostic": false, "flags": [], "start_distance_m": 1313.0, "end_distance_m": 1318.0, "start_elevation_m": 1245.8223001343138, "end_elevation_m": 1246.2140457841576, "min_gradient_pct": -0.17098175179398822 }, { "window_m": 10.0, "max_gradient_pct": 7.500223271727009, "diagnostic": false, "flags": [], "start_distance_m": 1313.0, "end_distance_m": 1323.0, "start_elevation_m": 1245.8223001343138, "end_elevation_m": 1246.5723224614865, "min_gradient_pct": -0.12731167031915902 }, { "window_m": 20.0, "max_gradient_pct": 6.707267741037413, "diagnostic": false, "flags": [], "start_distance_m": 377.0, "end_distance_m": 397.0, "start_elevation_m": 1191.5817586423318, "end_elevation_m": 1192.9232121905393, "min_gradient_pct": 0.6006938316488686 }, { "window_m": 25.0, "max_gradient_pct": 6.733573461719061, "diagnostic": false, "flags": [], "start_distance_m": 1817.0, "end_distance_m": 1842.0, "start_elevation_m": 1275.024995253324, "end_elevation_m": 1276.7083886187538, "min_gradient_pct": 1.0461663818750822 }, { "window_m": 50.0, "max_gradient_pct": 6.354829360276199, "diagnostic": false, "flags": [], "start_distance_m": 365.0, "end_distance_m": 415.0, "start_elevation_m": 1190.8924477920907, "end_elevation_m": 1194.0698624722288, "min_gradient_pct": 2.380808343220906 }, { "window_m": 100.0, "max_gradient_pct": 6.218814108574179, "diagnostic": false, "flags": [], "start_distance_m": 315.0, "end_distance_m": 415.0, "start_elevation_m": 1187.8510483636546, "end_elevation_m": 1194.0698624722288, "min_gradient_pct": 3.42646021268979 } ], "shape": { "ascent_concentration": 0.266, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 0.0, "shape_class": "sustained" }, "length_m": 3554.4214898922737, "start_elevation_m": 1171.1721770165984, "end_elevation_m": 1369.5806255234363, "endpoint_gain_m": 198.40844850683789, "overall_gradient_pct": 5.5820180322185475, "accumulated_ascent_m": 198.4942029387073, "window_maxima": { "max_5m": { "gradient_pct": 7.834912996877392, "start_distance_m": 1313.0, "end_distance_m": 1318.0, "midpoint_distance_m": 1315.5, "start_elevation_m": 1245.8223001343138, "end_elevation_m": 1246.2140457841576, "start_xy": [ 728491.5698680825, 6428237.961714152 ], "end_xy": [ 728488.7722035073, 6428242.105754805 ] }, "max_10m": { "gradient_pct": 7.500223271727009, "start_distance_m": 1313.0, "end_distance_m": 1323.0, "midpoint_distance_m": 1318.0, "start_elevation_m": 1245.8223001343138, "end_elevation_m": 1246.5723224614865, "start_xy": [ 728491.5698680825, 6428237.961714152 ], "end_xy": [ 728485.9745389321, 6428246.249795456 ] }, "max_20m": { "gradient_pct": 6.707267741037413, "start_distance_m": 377.0, "end_distance_m": 397.0, "midpoint_distance_m": 387.0, "start_elevation_m": 1191.5817586423318, "end_elevation_m": 1192.9232121905393, "start_xy": [ 729236.0548227787, 6427788.74347461 ], "end_xy": [ 729223.876183559, 6427804.526512619 ] }, "max_25m": { "gradient_pct": 6.733573461719061, "start_distance_m": 1817.0, "end_distance_m": 1842.0, "midpoint_distance_m": 1829.5, "start_elevation_m": 1275.024995253324, "end_elevation_m": 1276.7083886187538, "start_xy": [ 728261.283391153, 6428658.728463298 ], "end_xy": [ 728268.0520353117, 6428682.610876291 ] }, "max_50m": { "gradient_pct": 6.354829360276199, "start_distance_m": 365.0, "end_distance_m": 415.0, "midpoint_distance_m": 390.0, "start_elevation_m": 1190.8924477920907, "end_elevation_m": 1194.0698624722288, "start_xy": [ 729242.3944354063, 6427778.563816495 ], "end_xy": [ 729210.9706298228, 6427817.074288628 ] }, "max_100m": { "gradient_pct": 6.218814108574179, "start_distance_m": 315.0, "end_distance_m": 415.0, "midpoint_distance_m": 365.0, "start_elevation_m": 1187.8510483636546, "end_elevation_m": 1194.0698624722288, "start_xy": [ 729264.2886234531, 6427733.725293147 ], "end_xy": [ 729210.9706298228, 6427817.074288628 ] } }, "window_minima": { "min_5m": { "gradient_pct": -0.17098175179398822, "start_distance_m": 2786.0, "end_distance_m": 2791.0, "midpoint_distance_m": 2788.5, "start_elevation_m": 1329.8487287277765, "end_elevation_m": 1329.8401796401868, "start_xy": [ 728548.4384194225, 6429549.262010884 ], "end_xy": [ 728545.7833312864, 6429545.0252070185 ] }, "min_10m": { "gradient_pct": -0.12731167031915902, "start_distance_m": 2786.0, "end_distance_m": 2796.0, "midpoint_distance_m": 2791.0, "start_elevation_m": 1329.8487287277765, "end_elevation_m": 1329.8359975607445, "start_xy": [ 728548.4384194225, 6429549.262010884 ], "end_xy": [ 728544.235285439, 6429540.281519943 ] }, "min_20m": { "gradient_pct": 0.6006938316488686, "start_distance_m": 2782.0, "end_distance_m": 2802.0, "midpoint_distance_m": 2792.0, "start_elevation_m": 1329.7927713038807, "end_elevation_m": 1329.9129100702105, "start_xy": [ 728551.6338810358, 6429551.650599078 ], "end_xy": [ 728542.4681253044, 6429534.547660418 ] }, "min_25m": { "gradient_pct": 1.0461663818750822, "start_distance_m": 2781.0, "end_distance_m": 2806.0, "midpoint_distance_m": 2793.5, "start_elevation_m": 1329.7714133319294, "end_elevation_m": 1330.0329549273981, "start_xy": [ 728552.54684532, 6429551.97746727 ], "end_xy": [ 728541.6590849932, 6429530.634905122 ] }, "min_50m": { "gradient_pct": 2.380808343220906, "start_distance_m": 2760.0, "end_distance_m": 2810.0, "midpoint_distance_m": 2785.0, "start_elevation_m": 1328.9877336913403, "end_elevation_m": 1330.1781378629507, "start_xy": [ 728567.4214133664, 6429541.445259105 ], "end_xy": [ 728540.9415801603, 6429526.699782912 ] }, "min_100m": { "gradient_pct": 3.42646021268979, "start_distance_m": 2713.0, "end_distance_m": 2813.0, "midpoint_distance_m": 2763.0, "start_elevation_m": 1326.8709185171408, "end_elevation_m": 1330.2973787298306, "start_xy": [ 728556.0252729655, 6429496.227078854 ], "end_xy": [ 728540.4034515356, 6429523.748441253 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 8.633941958521518, "start_distance_m": 766.0, "end_distance_m": 768.0, "midpoint_distance_m": 767.0, "start_elevation_m": 1214.6596716577785, "end_elevation_m": 1214.832350496949, "start_xy": [ 728890.2569382697, 6427944.209144671 ], "end_xy": [ 728888.7886513685, 6427945.5671334695 ] }, "max_3m": { "gradient_pct": 8.330897374563998, "start_distance_m": 1316.0, "end_distance_m": 1319.0, "midpoint_distance_m": 1317.5, "start_elevation_m": 1246.044689918373, "end_elevation_m": 1246.29461683961, "start_xy": [ 728489.8912693374, 6428240.448138543 ], "end_xy": [ 728488.2126705922, 6428242.934562935 ] } }, "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": 0.013, "windows_resited": [], "windows_unresolved": [], "minima_resited": [], "minima_unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.035, "obstruction_max_height_m": 16.58, "flagged_windows_m": [] }, "excluded_ranges_m": [ [ 0.0, 45.0 ] ], "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-mc5", "road_pbf": "block-batch-fr-mc5.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_E728-N6427_0m5@21LHD4LN-2025-02-10.tif", "data/cache/fr/ign-lidarhd_dtm_E728-N6428_0m5@21LHD4LN-2025-02-10.tif", "data/cache/fr/ign-lidarhd_dtm_E728-N6429_0m5@21LHD4LN-2025-02-10.tif", "data/cache/fr/ign-lidarhd_dtm_E729-N6427_0m5@21LHD4LN-2025-02-10.tif", "data/cache/fr/ign-lidarhd_dtm_E729-N6428_0m5@21LHD4LN-2025-02-10.tif" ], "calculated_at": "2026-09-22T17:26:31+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc5.osm.pbf", "osm_snapshot": "", "run_id": "fr-mc5", "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": [ "E728-N6427", "E728-N6428", "E728-N6429", "E729-N6427", "E729-N6428" ], "elevation_blocks": [ "21LHD4LN@2025-02-10" ], "ign_dalles": [ "LHD_FXX_0728_6428_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0728_6429_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0728_6430_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0729_6428_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0729_6429_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD4LN" ], "ign_editions": [ "2025-02-10" ], "ign_dsm_edition": { "LHD_FXX_0728_6428_MNT_O_0M50_LAMB93_IGN69": "2025-02-10", "LHD_FXX_0728_6429_MNT_O_0M50_LAMB93_IGN69": "2025-02-10", "LHD_FXX_0728_6430_MNT_O_0M50_LAMB93_IGN69": "2025-02-10", "LHD_FXX_0729_6428_MNT_O_0M50_LAMB93_IGN69": "2025-02-10", "LHD_FXX_0729_6429_MNT_O_0M50_LAMB93_IGN69": "2025-02-10" }, "climb_origin": "named-pass", "structure_own_ways": 2, "structure_mask_ranges_m": [ [ 0.0, 15.0 ] ], "mask_basin_extension_m": 25.0, "carriageway": { "stations": 149, "stations_resolved": 149, "width_median_m": 5.25, "width_p10_m": 4.5, "width_min_m": 3.5, "width_max_m": 12.0, "bounded_share": 0.242, "unbounded_share": 0.758, "confidence_median": 0.0, "width_median_bounded_m": 5.62, "window_m": [ 1817.0, 1842.0 ], "width_at_max25_m": 6.5, "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": 149, "stations_resolved": 149, "width_median_m": 7.5, "width_p10_m": 4.2, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.839, "unbounded_share": 0.161, "confidence_median": 1.0, "width_median_bounded_m": 7.0, "window_m": [ 1817.0, 1842.0 ], "width_at_max25_m": 9.25, "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": "Paulhac-en-Margeride", "county": "Loz\u00e8re", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }