{ "ocl_version": "0.1.0", "name": "Col de Bigorno from Murato", "slug": "col-de-bigorno-from-murato", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 29.52380222440638, "diagnostic": true, "flags": [ "structure_excluded", "structure_excluded_min", "canopy_or_structure" ], "start_distance_m": 3508.0, "end_distance_m": 3510.0, "start_elevation_m": 606.3176399499546, "end_elevation_m": 606.9081159944427, "min_gradient_pct": -23.102305487844887, "suppressed_max_gradient_pct": 152.78120140185365, "suppressed_location_m": [ 849.0, 851.0 ], "suppressed_min_gradient_pct": -295.01341915948274, "suppressed_min_location_m": [ 2105.0, 2107.0 ] }, { "window_m": 3.0, "max_gradient_pct": 21.47525309597616, "diagnostic": true, "flags": [ "structure_excluded", "structure_excluded_min", "canopy_or_structure" ], "start_distance_m": 3507.0, "end_distance_m": 3510.0, "start_elevation_m": 606.2638584015634, "end_elevation_m": 606.9081159944427, "min_gradient_pct": -15.609536711277391, "suppressed_max_gradient_pct": 150.17130103117702, "suppressed_location_m": [ 2113.0, 2116.0 ], "suppressed_min_gradient_pct": -264.3449301426699, "suppressed_min_location_m": [ 2105.0, 2108.0 ] }, { "window_m": 5.0, "max_gradient_pct": 14.76494239097292, "diagnostic": false, "flags": [ "structure_excluded", "structure_excluded_min", "canopy_or_structure" ], "start_distance_m": 3505.0, "end_distance_m": 3510.0, "start_elevation_m": 606.1698688748941, "end_elevation_m": 606.9081159944427, "min_gradient_pct": -9.342246695123322, "suppressed_max_gradient_pct": 143.99054123488668, "suppressed_location_m": [ 2111.0, 2116.0 ], "suppressed_min_gradient_pct": -159.5497080063069, "suppressed_min_location_m": [ 2104.0, 2109.0 ] }, { "window_m": 10.0, "max_gradient_pct": 10.13733562527932, "diagnostic": false, "flags": [ "structure_excluded", "structure_excluded_min", "canopy_or_structure" ], "start_distance_m": 3500.0, "end_distance_m": 3510.0, "start_elevation_m": 605.8943824319148, "end_elevation_m": 606.9081159944427, "min_gradient_pct": -5.6078018288440035, "suppressed_max_gradient_pct": 80.65781895146529, "suppressed_location_m": [ 2111.0, 2121.0 ], "suppressed_min_gradient_pct": -79.96172811998576, "suppressed_min_location_m": [ 2099.0, 2109.0 ] }, { "window_m": 20.0, "max_gradient_pct": 8.467875520082657, "diagnostic": false, "flags": [ "structure_excluded", "structure_excluded_min" ], "start_distance_m": 4723.0, "end_distance_m": 4743.0, "start_elevation_m": 663.4967545734304, "end_elevation_m": 665.1903296774469, "min_gradient_pct": -2.4750748333718775, "suppressed_max_gradient_pct": 41.464783944737746, "suppressed_location_m": [ 2111.0, 2131.0 ], "suppressed_min_gradient_pct": -40.831124295458494, "suppressed_min_location_m": [ 2089.0, 2109.0 ] }, { "window_m": 25.0, "max_gradient_pct": 7.860782959643075, "diagnostic": false, "flags": [ "structure_excluded", "structure_excluded_min" ], "start_distance_m": 4044.0, "end_distance_m": 4069.0, "start_elevation_m": 633.5421092854193, "end_elevation_m": 635.5073050253301, "min_gradient_pct": -1.7212768564240832, "suppressed_max_gradient_pct": 33.70756665157796, "suppressed_location_m": [ 2111.0, 2136.0 ], "suppressed_min_gradient_pct": -32.84207361111612, "suppressed_min_location_m": [ 2084.0, 2109.0 ] }, { "window_m": 50.0, "max_gradient_pct": 7.193370978983694, "diagnostic": false, "flags": [ "structure_excluded", "structure_excluded_min" ], "start_distance_m": 4041.0, "end_distance_m": 4091.0, "start_elevation_m": 633.3687739433383, "end_elevation_m": 636.9654594328301, "min_gradient_pct": -0.15033829959725153, "suppressed_max_gradient_pct": 18.365324648010983, "suppressed_location_m": [ 2109.0, 2159.0 ], "suppressed_min_gradient_pct": -16.01290562585382, "suppressed_min_location_m": [ 2061.0, 2111.0 ] }, { "window_m": 100.0, "max_gradient_pct": 6.140825368285277, "diagnostic": false, "flags": [ "structure_excluded", "structure_excluded_min" ], "start_distance_m": 2946.0, "end_distance_m": 3046.0, "start_elevation_m": 576.6269956567962, "end_elevation_m": 582.7678210250815, "min_gradient_pct": 0.18717147886889052, "suppressed_max_gradient_pct": 9.643131995380713, "suppressed_location_m": [ 2109.0, 2209.0 ], "suppressed_min_gradient_pct": -7.431460751670329, "suppressed_min_location_m": [ 2010.0, 2110.0 ] } ], "shape": { "ascent_concentration": 0.302, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 19.0, "shape_class": "sustained" }, "length_m": 9052.880735038012, "start_elevation_m": 510.40866875781575, "end_elevation_m": 885.0153739233427, "endpoint_gain_m": 374.606705165527, "overall_gradient_pct": 4.137983434550947, "accumulated_ascent_m": 400.0521690458644, "window_maxima": { "max_5m": { "gradient_pct": 14.76494239097292, "start_distance_m": 3505.0, "end_distance_m": 3510.0, "midpoint_distance_m": 3507.5, "start_elevation_m": 606.1698688748941, "end_elevation_m": 606.9081159944427, "start_xy": [ 1218551.5380350207, 6183541.167443057 ], "end_xy": [ 1218555.1806411054, 6183544.592559246 ] }, "max_10m": { "gradient_pct": 10.13733562527932, "start_distance_m": 3500.0, "end_distance_m": 3510.0, "midpoint_distance_m": 3505.0, "start_elevation_m": 605.8943824319148, "end_elevation_m": 606.9081159944427, "start_xy": [ 1218547.8954289358, 6183537.742326867 ], "end_xy": [ 1218555.1806411054, 6183544.592559246 ] }, "max_20m": { "gradient_pct": 8.467875520082657, "start_distance_m": 4723.0, "end_distance_m": 4743.0, "midpoint_distance_m": 4733.0, "start_elevation_m": 663.4967545734304, "end_elevation_m": 665.1903296774469, "start_xy": [ 1218535.7283560089, 6183050.594858475 ], "end_xy": [ 1218521.1233741555, 6183064.125461763 ] }, "max_25m": { "gradient_pct": 7.860782959643075, "start_distance_m": 4044.0, "end_distance_m": 4069.0, "midpoint_distance_m": 4056.5, "start_elevation_m": 633.5421092854193, "end_elevation_m": 635.5073050253301, "start_xy": [ 1218591.5903536556, 6183248.135006544 ], "end_xy": [ 1218601.9345638019, 6183225.975927507 ] }, "max_50m": { "gradient_pct": 7.193370978983694, "start_distance_m": 4041.0, "end_distance_m": 4091.0, "midpoint_distance_m": 4066.0, "start_elevation_m": 633.3687739433383, "end_elevation_m": 636.9654594328301, "start_xy": [ 1218590.4197786439, 6183250.897207504 ], "end_xy": [ 1218589.5283988365, 6183209.586970804 ] }, "max_100m": { "gradient_pct": 6.140825368285277, "start_distance_m": 2946.0, "end_distance_m": 3046.0, "midpoint_distance_m": 2996.0, "start_elevation_m": 576.6269956567962, "end_elevation_m": 582.7678210250815, "start_xy": [ 1218440.2128883186, 6183884.703873072 ], "end_xy": [ 1218495.0308494228, 6183802.8734490285 ] } }, "window_minima": { "min_5m": { "gradient_pct": -9.342246695123322, "start_distance_m": 2018.0, "end_distance_m": 2023.0, "midpoint_distance_m": 2020.5, "start_elevation_m": 541.1945700072949, "end_elevation_m": 540.7274576725388, "start_xy": [ 1217951.1231425544, 6184140.154819056 ], "end_xy": [ 1217946.3243408264, 6184141.557929537 ] }, "min_10m": { "gradient_pct": -5.6078018288440035, "start_distance_m": 2018.0, "end_distance_m": 2028.0, "midpoint_distance_m": 2023.0, "start_elevation_m": 541.1945700072949, "end_elevation_m": 540.6337898244105, "start_xy": [ 1217951.1231425544, 6184140.154819056 ], "end_xy": [ 1217941.3656120044, 6184142.199028961 ] }, "min_20m": { "gradient_pct": -2.4750748333718775, "start_distance_m": 2018.0, "end_distance_m": 2038.0, "midpoint_distance_m": 2028.0, "start_elevation_m": 541.1945700072949, "end_elevation_m": 540.6995550406206, "start_xy": [ 1217951.1231425544, 6184140.154819056 ], "end_xy": [ 1217931.4481543608, 6184143.481227809 ] }, "min_25m": { "gradient_pct": -1.7212768564240832, "start_distance_m": 2018.0, "end_distance_m": 2043.0, "midpoint_distance_m": 2030.5, "start_elevation_m": 541.1945700072949, "end_elevation_m": 540.7642507931889, "start_xy": [ 1217951.1231425544, 6184140.154819056 ], "end_xy": [ 1217926.4879197625, 6184143.976346188 ] }, "min_50m": { "gradient_pct": -0.15033829959725153, "start_distance_m": 1618.0, "end_distance_m": 1668.0, "midpoint_distance_m": 1643.0, "start_elevation_m": 537.0860970343083, "end_elevation_m": 537.0109278845097, "start_xy": [ 1218314.864388399, 6184268.040539933 ], "end_xy": [ 1218276.4345942966, 6184236.096102474 ] }, "min_100m": { "gradient_pct": 0.18717147886889052, "start_distance_m": 1618.0, "end_distance_m": 1718.0, "midpoint_distance_m": 1668.0, "start_elevation_m": 537.0860970343083, "end_elevation_m": 537.2732685131772, "start_xy": [ 1218314.864388399, 6184268.040539933 ], "end_xy": [ 1218235.8983074874, 6184207.043203382 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 29.52380222440638, "start_distance_m": 3508.0, "end_distance_m": 3510.0, "midpoint_distance_m": 3509.0, "start_elevation_m": 606.3176399499546, "end_elevation_m": 606.9081159944427, "start_xy": [ 1218553.7235986714, 6183543.22251277 ], "end_xy": [ 1218555.1806411054, 6183544.592559246 ] }, "max_3m": { "gradient_pct": 21.47525309597616, "start_distance_m": 3507.0, "end_distance_m": 3510.0, "midpoint_distance_m": 3508.5, "start_elevation_m": 606.2638584015634, "end_elevation_m": 606.9081159944427, "start_xy": [ 1218552.9950774545, 6183542.5374895325 ], "end_xy": [ 1218555.1806411054, 6183544.592559246 ] } }, "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": [ 2.0, 3.0, 5.0, 10.0, 20.0, 25.0, 50.0, 100.0 ], "windows_unresolved": [], "minima_resited": [ 2.0, 3.0, 5.0, 10.0, 20.0, 25.0, 50.0, 100.0 ], "minima_unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.128, "obstruction_max_height_m": 23.15, "flagged_windows_m": [ 2, 3, 5, 10 ] }, "excluded_ranges_m": [ [ 792.0, 800.0 ], [ 843.0, 853.0 ], [ 1562.0, 1571.0 ], [ 2084.0, 2149.0 ], [ 3415.0, 3436.0 ] ], "review": [], "extent": [] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "33abfff569d4360542e616d0d42c1b94d0a711fa", "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-co3", "road_pbf": "block-batch-fr-co3.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": "sha256:2a717d675f2607cc" }, "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_E1217-N6180_0m5@21LHDCorseVS-2025-04-02.tif", "data/cache/fr/ign-lidarhd_dtm_E1217-N6181_0m5@21LHDCorseVS-2025-04-02.tif", "data/cache/fr/ign-lidarhd_dtm_E1217-N6182_0m5@21LHDCorseVS-2025-04-02.tif", "data/cache/fr/ign-lidarhd_dtm_E1217-N6183_0m5@21LHDCorseVS-2025-04-02.tif", "data/cache/fr/ign-lidarhd_dtm_E1217-N6184_0m5@21LHDCorseVS-2025-04-02.tif", "data/cache/fr/ign-lidarhd_dtm_E1218-N6181_0m5@21LHDCorseVS-2025-04-02.tif", "data/cache/fr/ign-lidarhd_dtm_E1218-N6182_0m5@21LHDCorseVS-2025-04-02.tif", "data/cache/fr/ign-lidarhd_dtm_E1218-N6183_0m5@21LHDCorseVS-2025-04-02.tif", "data/cache/fr/ign-lidarhd_dtm_E1218-N6184_0m5@21LHDCorseVS-2025-04-02.tif", "data/cache/fr/ign-lidarhd_dtm_E1219-N6184_0m5@21LHDCorseVS-2025-04-02.tif" ], "calculated_at": "2026-09-25T00:51:19+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-co3.osm.pbf", "osm_snapshot": "", "run_id": "fr-co3", "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": [ "E1217-N6180", "E1217-N6181", "E1217-N6182", "E1217-N6183", "E1217-N6184", "E1218-N6181", "E1218-N6182", "E1218-N6183", "E1218-N6184", "E1219-N6184" ], "elevation_blocks": [ "21LHDCorseVS@2025-04-02" ], "ign_dalles": [ "LHD_FXX_1217_6181_MNT_O_0M50_LAMB93_IGN78", "LHD_FXX_1217_6182_MNT_O_0M50_LAMB93_IGN78", "LHD_FXX_1217_6183_MNT_O_0M50_LAMB93_IGN78", "LHD_FXX_1217_6184_MNT_O_0M50_LAMB93_IGN78", "LHD_FXX_1217_6185_MNT_O_0M50_LAMB93_IGN78", "LHD_FXX_1218_6182_MNT_O_0M50_LAMB93_IGN78", "LHD_FXX_1218_6183_MNT_O_0M50_LAMB93_IGN78", "LHD_FXX_1218_6184_MNT_O_0M50_LAMB93_IGN78", "LHD_FXX_1218_6185_MNT_O_0M50_LAMB93_IGN78", "LHD_FXX_1219_6185_MNT_O_0M50_LAMB93_IGN78" ], "ign_missions": [ "21LHDCorseVS" ], "ign_editions": [ "2025-04-02" ], "ign_dsm_edition": { "LHD_FXX_1217_6181_MNT_O_0M50_LAMB93_IGN78": "2025-04-02", "LHD_FXX_1217_6182_MNT_O_0M50_LAMB93_IGN78": "2025-04-02", "LHD_FXX_1217_6183_MNT_O_0M50_LAMB93_IGN78": "2025-04-02", "LHD_FXX_1217_6184_MNT_O_0M50_LAMB93_IGN78": "2025-04-02", "LHD_FXX_1217_6185_MNT_O_0M50_LAMB93_IGN78": "2025-04-02", "LHD_FXX_1218_6182_MNT_O_0M50_LAMB93_IGN78": "2025-04-02", "LHD_FXX_1218_6183_MNT_O_0M50_LAMB93_IGN78": "2025-04-02", "LHD_FXX_1218_6184_MNT_O_0M50_LAMB93_IGN78": "2025-04-02", "LHD_FXX_1218_6185_MNT_O_0M50_LAMB93_IGN78": "2025-04-02", "LHD_FXX_1219_6185_MNT_O_0M50_LAMB93_IGN78": "2025-04-02" }, "climb_origin": "named-pass", "structure_own_ways": 10, "structure_mask_ranges_m": [ [ 2102.0, 2117.6 ], [ 3420.2, 3431.0 ] ], "mask_basin_extension_m": 40.0, "carriageway": { "stations": 369, "stations_resolved": 369, "width_median_m": 5.25, "width_p10_m": 4.0, "width_min_m": 1.0, "width_max_m": 10.5, "bounded_share": 0.585, "unbounded_share": 0.415, "confidence_median": 0.602, "width_median_bounded_m": 5.25, "window_m": [ 4044.0, 4069.0 ], "width_at_max25_m": 6.25, "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": 369, "stations_resolved": 369, "width_median_m": 5.25, "width_p10_m": 1.25, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.911, "unbounded_share": 0.089, "confidence_median": 1.0, "width_median_bounded_m": 5.0, "window_m": [ 4044.0, 4069.0 ], "width_at_max25_m": 4.5, "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": "Murato", "county": "Haute-Corse", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }