{ "ocl_version": "0.1.0", "name": "Croix de Famban from Br\u00e9naz", "slug": "croix-de-famban-from-brenaz", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 37.8404025806617, "diagnostic": true, "flags": [], "start_distance_m": 7876.0, "end_distance_m": 7878.0, "start_elevation_m": 1314.1375011824439, "end_elevation_m": 1314.8943092340571, "min_gradient_pct": -26.18406719544737 }, { "window_m": 3.0, "max_gradient_pct": 31.52727665318101, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 3749.0, "end_distance_m": 3752.0, "start_elevation_m": 1122.664176074349, "end_elevation_m": 1123.6099943739443, "min_gradient_pct": -21.16637258444977 }, { "window_m": 5.0, "max_gradient_pct": 23.253666510599942, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 3747.0, "end_distance_m": 3752.0, "start_elevation_m": 1122.4473110484143, "end_elevation_m": 1123.6099943739443, "min_gradient_pct": -16.975486091273524 }, { "window_m": 10.0, "max_gradient_pct": 18.257375725161182, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 3742.0, "end_distance_m": 3752.0, "start_elevation_m": 1121.7842568014282, "end_elevation_m": 1123.6099943739443, "min_gradient_pct": -13.282697926460969 }, { "window_m": 20.0, "max_gradient_pct": 15.012380412861148, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1288.0, "end_distance_m": 1308.0, "start_elevation_m": 869.2484920900688, "end_elevation_m": 872.250968172641, "min_gradient_pct": -11.82030063851812 }, { "window_m": 25.0, "max_gradient_pct": 14.721443587630347, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 3744.0, "end_distance_m": 3769.0, "start_elevation_m": 1121.9478158548013, "end_elevation_m": 1125.628176751709, "min_gradient_pct": -11.451688929606462 }, { "window_m": 50.0, "max_gradient_pct": 13.098708081153745, "diagnostic": false, "flags": [], "start_distance_m": 7876.0, "end_distance_m": 7926.0, "start_elevation_m": 1314.1375011824439, "end_elevation_m": 1320.6868552230208, "min_gradient_pct": -11.045187391321633 }, { "window_m": 100.0, "max_gradient_pct": 12.871824153266743, "diagnostic": false, "flags": [], "start_distance_m": 7687.0, "end_distance_m": 7787.0, "start_elevation_m": 1292.589521938982, "end_elevation_m": 1305.4613460922487, "min_gradient_pct": -10.33999727592095 } ], "shape": { "ascent_concentration": 0.364, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 1306.0, "shape_class": "sustained" }, "length_m": 8887.001827923914, "start_elevation_m": 748.7838085742166, "end_elevation_m": 1315.7464148056758, "endpoint_gain_m": 566.9626062314593, "overall_gradient_pct": 6.379683690960904, "accumulated_ascent_m": 653.9295921338131, "window_maxima": { "max_5m": { "gradient_pct": 23.253666510599942, "start_distance_m": 3747.0, "end_distance_m": 3752.0, "midpoint_distance_m": 3749.5, "start_elevation_m": 1122.4473110484143, "end_elevation_m": 1123.6099943739443, "start_xy": [ 912267.7151471864, 6543031.296704118 ], "end_xy": [ 912265.6982244896, 6543026.721551351 ] }, "max_10m": { "gradient_pct": 18.257375725161182, "start_distance_m": 3742.0, "end_distance_m": 3752.0, "midpoint_distance_m": 3747.0, "start_elevation_m": 1121.7842568014282, "end_elevation_m": 1123.6099943739443, "start_xy": [ 912269.7320698834, 6543035.871856884 ], "end_xy": [ 912265.6982244896, 6543026.721551351 ] }, "max_20m": { "gradient_pct": 15.012380412861148, "start_distance_m": 1288.0, "end_distance_m": 1308.0, "midpoint_distance_m": 1298.0, "start_elevation_m": 869.2484920900688, "end_elevation_m": 872.250968172641, "start_xy": [ 911953.891093889, 6542076.919830009 ], "end_xy": [ 911956.3944688373, 6542057.077120672 ] }, "max_25m": { "gradient_pct": 14.721443587630347, "start_distance_m": 3744.0, "end_distance_m": 3769.0, "midpoint_distance_m": 3756.5, "start_elevation_m": 1121.9478158548013, "end_elevation_m": 1125.628176751709, "start_xy": [ 912268.9253008045, 6543034.041795778 ], "end_xy": [ 912260.7755072005, 6543010.598285694 ] }, "max_50m": { "gradient_pct": 13.098708081153745, "start_distance_m": 7876.0, "end_distance_m": 7926.0, "midpoint_distance_m": 7901.0, "start_elevation_m": 1314.1375011824439, "end_elevation_m": 1320.6868552230208, "start_xy": [ 913795.967463688, 6542480.251985485 ], "end_xy": [ 913819.9260482246, 6542436.365925887 ] }, "max_100m": { "gradient_pct": 12.871824153266743, "start_distance_m": 7687.0, "end_distance_m": 7787.0, "midpoint_distance_m": 7737.0, "start_elevation_m": 1292.589521938982, "end_elevation_m": 1305.4613460922487, "start_xy": [ 913715.1135601351, 6542650.291899999 ], "end_xy": [ 913751.4543052119, 6542557.161136972 ] } }, "window_minima": { "min_5m": { "gradient_pct": -16.975486091273524, "start_distance_m": 6611.0, "end_distance_m": 6616.0, "midpoint_distance_m": 6613.5, "start_elevation_m": 1262.726841005186, "end_elevation_m": 1261.8780667006224, "start_xy": [ 913270.4031906241, 6542842.778717462 ], "end_xy": [ 913271.6485543734, 6542847.621141353 ] }, "min_10m": { "gradient_pct": -13.282697926460969, "start_distance_m": 6604.0, "end_distance_m": 6614.0, "midpoint_distance_m": 6609.0, "start_elevation_m": 1263.4201196202987, "end_elevation_m": 1262.0918498276526, "start_xy": [ 913268.6596813749, 6542835.999324016 ], "end_xy": [ 913271.1504088737, 6542845.684171797 ] }, "min_20m": { "gradient_pct": -11.82030063851812, "start_distance_m": 6596.0, "end_distance_m": 6616.0, "midpoint_distance_m": 6606.0, "start_elevation_m": 1264.242126828326, "end_elevation_m": 1261.8780667006224, "start_xy": [ 913266.667099376, 6542828.251445792 ], "end_xy": [ 913271.6485543734, 6542847.621141353 ] }, "min_25m": { "gradient_pct": -11.451688929606462, "start_distance_m": 6288.0, "end_distance_m": 6313.0, "midpoint_distance_m": 6300.5, "start_elevation_m": 1292.3171020640673, "end_elevation_m": 1289.4541798316657, "start_xy": [ 913039.3366334973, 6542837.622006118 ], "end_xy": [ 913057.0282303942, 6542820.075003356 ] }, "min_50m": { "gradient_pct": -11.045187391321633, "start_distance_m": 6263.0, "end_distance_m": 6313.0, "midpoint_distance_m": 6288.0, "start_elevation_m": 1294.9767735273265, "end_elevation_m": 1289.4541798316657, "start_xy": [ 913022.2733245963, 6542855.878930316 ], "end_xy": [ 913057.0282303942, 6542820.075003356 ] }, "min_100m": { "gradient_pct": -10.33999727592095, "start_distance_m": 6216.0, "end_distance_m": 6316.0, "midpoint_distance_m": 6266.0, "start_elevation_m": 1299.49708260053, "end_elevation_m": 1289.157085324609, "start_xy": [ 912984.4936019354, 6542883.502525717 ], "end_xy": [ 913059.4136722273, 6542818.255754263 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 37.8404025806617, "start_distance_m": 7876.0, "end_distance_m": 7878.0, "midpoint_distance_m": 7877.0, "start_elevation_m": 1314.1375011824439, "end_elevation_m": 1314.8943092340571, "start_xy": [ 913795.967463688, 6542480.251985485 ], "end_xy": [ 913796.9258070694, 6542478.4965431 ] }, "max_3m": { "gradient_pct": 31.52727665318101, "start_distance_m": 3749.0, "end_distance_m": 3752.0, "midpoint_distance_m": 3750.5, "start_elevation_m": 1122.664176074349, "end_elevation_m": 1123.6099943739443, "start_xy": [ 912266.9083781077, 6543029.466643011 ], "end_xy": [ 912265.6982244896, 6543026.721551351 ] } }, "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": 0.109, "obstruction_max_height_m": 30.6, "flagged_windows_m": [ 3, 5, 10, 20, 25 ] }, "review": [], "extent": [ "may_start_earlier" ] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "f5b73ceb069e047c313bd7ccccf3cb122dbac107", "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-ju-cols", "road_pbf": "block-batch-fr-ju-cols.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": "sha256:78945c7930496bfe" }, "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_E911-N6541_0m5@21LHD5PK1-2024-12-19.tif", "data/cache/fr/ign-lidarhd_dtm_E911-N6542_0m5@21LHD5PK1-2024-12-19.tif", "data/cache/fr/ign-lidarhd_dtm_E911-N6543_0m5@21LHD5PK1-2024-12-19.tif", "data/cache/fr/ign-lidarhd_dtm_E912-N6541_0m5@21LHD5PK1-2024-12-19.tif", "data/cache/fr/ign-lidarhd_dtm_E912-N6542_0m5@21LHD5PK1-2024-12-19.tif", "data/cache/fr/ign-lidarhd_dtm_E912-N6543_0m5@21LHD5PK1-2024-12-19.tif", "data/cache/fr/ign-lidarhd_dtm_E913-N6542_0m5@21LHD5PK1-2024-12-19.tif", "data/cache/fr/ign-lidarhd_dtm_E913-N6543_0m5@21LHD5PK1-2024-12-19.tif", "data/cache/fr/ign-lidarhd_dtm_E914-N6542_0m5@21LHD5PK1-2024-12-19.tif", "data/cache/fr/ign-lidarhd_dtm_E914-N6543_0m5@21LHD5PK1-2024-12-19.tif" ], "calculated_at": "2026-09-24T17:19:57+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-ju-cols.osm.pbf", "osm_snapshot": "", "run_id": "fr-ju-cols", "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": [ "E911-N6541", "E911-N6542", "E911-N6543", "E912-N6541", "E912-N6542", "E912-N6543", "E913-N6542", "E913-N6543", "E914-N6542", "E914-N6543" ], "elevation_blocks": [ "21LHD5PK1@2024-12-19" ], "ign_dalles": [ "LHD_FXX_0911_6542_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0911_6543_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0911_6544_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0912_6542_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0912_6543_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0912_6544_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0913_6543_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0913_6544_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0914_6543_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0914_6544_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD5PK1" ], "ign_editions": [ "2024-12-19" ], "ign_dsm_edition": { "LHD_FXX_0911_6542_MNT_O_0M50_LAMB93_IGN69": "2024-12-19", "LHD_FXX_0911_6543_MNT_O_0M50_LAMB93_IGN69": "2024-12-19", "LHD_FXX_0911_6544_MNT_O_0M50_LAMB93_IGN69": "2024-12-19", "LHD_FXX_0912_6542_MNT_O_0M50_LAMB93_IGN69": "2024-12-19", "LHD_FXX_0912_6543_MNT_O_0M50_LAMB93_IGN69": "2024-12-19", "LHD_FXX_0912_6544_MNT_O_0M50_LAMB93_IGN69": "2024-12-19", "LHD_FXX_0913_6543_MNT_O_0M50_LAMB93_IGN69": "2024-12-19", "LHD_FXX_0913_6544_MNT_O_0M50_LAMB93_IGN69": "2024-12-19", "LHD_FXX_0914_6543_MNT_O_0M50_LAMB93_IGN69": "2024-12-19", "LHD_FXX_0914_6544_MNT_O_0M50_LAMB93_IGN69": "2024-12-19" }, "climb_origin": "named-pass", "via": [ "Golet des Faies", "Col de la Biche" ], "structure_own_ways": "none \u2014 the route carried no way list and no mapped way runs along it; own decks unmasked", "carriageway": { "stations": 362, "stations_resolved": 362, "width_median_m": 6.0, "width_p10_m": 4.5, "width_min_m": 1.0, "width_max_m": 12.0, "bounded_share": 0.475, "unbounded_share": 0.525, "confidence_median": 0.0, "width_median_bounded_m": 5.75, "window_m": [ 3744.0, 3769.0 ], "width_at_max25_m": 6.0, "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": 362, "stations_resolved": 362, "width_median_m": 6.25, "width_p10_m": 1.0, "width_min_m": 0.0, "width_max_m": 12.0, "bounded_share": 0.787, "unbounded_share": 0.213, "confidence_median": 1.0, "width_median_bounded_m": 5.75, "window_m": [ 3744.0, 3769.0 ], "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": "Arvi\u00e8re-en-Valromey", "county": "Ain", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }