{ "ocl_version": "0.1.0", "name": "Col de la Loge from Chalmazel-Jeansagni\u00e8re", "slug": "col-de-la-loge-from-chalmazel-jeansagniere", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 10.192914685046617, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 9897.0, "end_distance_m": 9899.0, "start_elevation_m": 1212.7238644304562, "end_elevation_m": 1212.927722724157, "min_gradient_pct": -3.1529766066796583 }, { "window_m": 3.0, "max_gradient_pct": 9.018081037303697, "diagnostic": true, "flags": [], "start_distance_m": 483.0, "end_distance_m": 486.0, "start_elevation_m": 888.1675934460457, "end_elevation_m": 888.4381358771648, "min_gradient_pct": -1.7170651887984907 }, { "window_m": 5.0, "max_gradient_pct": 8.526877440165208, "diagnostic": false, "flags": [], "start_distance_m": 480.0, "end_distance_m": 485.0, "start_elevation_m": 887.9299323785449, "end_elevation_m": 888.3562762505532, "min_gradient_pct": -0.285172061448975 }, { "window_m": 10.0, "max_gradient_pct": 8.084957491665818, "diagnostic": false, "flags": [], "start_distance_m": 476.0, "end_distance_m": 486.0, "start_elevation_m": 887.6296401279982, "end_elevation_m": 888.4381358771648, "min_gradient_pct": 0.007681316494654311 }, { "window_m": 20.0, "max_gradient_pct": 7.582631717264121, "diagnostic": false, "flags": [], "start_distance_m": 466.0, "end_distance_m": 486.0, "start_elevation_m": 886.921609533712, "end_elevation_m": 888.4381358771648, "min_gradient_pct": 0.21335976956265768 }, { "window_m": 25.0, "max_gradient_pct": 7.56677261607274, "diagnostic": false, "flags": [], "start_distance_m": 461.0, "end_distance_m": 486.0, "start_elevation_m": 886.5464427231466, "end_elevation_m": 888.4381358771648, "min_gradient_pct": 0.3760920252543656 }, { "window_m": 50.0, "max_gradient_pct": 7.4932843723454425, "diagnostic": false, "flags": [], "start_distance_m": 436.0, "end_distance_m": 486.0, "start_elevation_m": 884.691493690992, "end_elevation_m": 888.4381358771648, "min_gradient_pct": 0.5069722549533253 }, { "window_m": 100.0, "max_gradient_pct": 7.2171717852655775, "diagnostic": false, "flags": [], "start_distance_m": 420.0, "end_distance_m": 520.0, "start_elevation_m": 883.5977284109038, "end_elevation_m": 890.8149001961693, "min_gradient_pct": 0.8603357005561065 } ], "shape": { "ascent_concentration": 0.405, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 0.0, "shape_class": "sustained" }, "length_m": 10928.724235481432, "start_elevation_m": 857.1139953964768, "end_elevation_m": 1252.6789708202975, "endpoint_gain_m": 395.5649754238208, "overall_gradient_pct": 3.61949818570379, "accumulated_ascent_m": 396.19334123378064, "window_maxima": { "max_5m": { "gradient_pct": 8.526877440165208, "start_distance_m": 480.0, "end_distance_m": 485.0, "midpoint_distance_m": 482.5, "start_elevation_m": 887.9299323785449, "end_elevation_m": 888.3562762505532, "start_xy": [ 766660.3836667682, 6512475.405323168 ], "end_xy": [ 766663.7713458436, 6512479.082772078 ] }, "max_10m": { "gradient_pct": 8.084957491665818, "start_distance_m": 476.0, "end_distance_m": 486.0, "midpoint_distance_m": 481.0, "start_elevation_m": 887.6296401279982, "end_elevation_m": 888.4381358771648, "start_xy": [ 766657.6735235079, 6512472.4633640405 ], "end_xy": [ 766664.5411589977, 6512479.663984635 ] }, "max_20m": { "gradient_pct": 7.582631717264121, "start_distance_m": 466.0, "end_distance_m": 486.0, "midpoint_distance_m": 476.0, "start_elevation_m": 886.921609533712, "end_elevation_m": 888.4381358771648, "start_xy": [ 766651.833278404, 6512464.4221565565 ], "end_xy": [ 766664.5411589977, 6512479.663984635 ] }, "max_25m": { "gradient_pct": 7.56677261607274, "start_distance_m": 461.0, "end_distance_m": 486.0, "midpoint_distance_m": 473.5, "start_elevation_m": 886.5464427231466, "end_elevation_m": 888.4381358771648, "start_xy": [ 766649.3407705422, 6512460.087712583 ], "end_xy": [ 766664.5411589977, 6512479.663984635 ] }, "max_50m": { "gradient_pct": 7.4932843723454425, "start_distance_m": 436.0, "end_distance_m": 486.0, "midpoint_distance_m": 461.0, "start_elevation_m": 884.691493690992, "end_elevation_m": 888.4381358771648, "start_xy": [ 766636.8782312333, 6512438.415492715 ], "end_xy": [ 766664.5411589977, 6512479.663984635 ] }, "max_100m": { "gradient_pct": 7.2171717852655775, "start_distance_m": 420.0, "end_distance_m": 520.0, "midpoint_distance_m": 470.0, "start_elevation_m": 883.5977284109038, "end_elevation_m": 890.8149001961693, "start_xy": [ 766628.9022060757, 6512424.545272 ], "end_xy": [ 766696.0397285734, 6512473.355846469 ] } }, "window_minima": { "min_5m": { "gradient_pct": -0.285172061448975, "start_distance_m": 5414.0, "end_distance_m": 5419.0, "midpoint_distance_m": 5416.5, "start_elevation_m": 1091.5314028695198, "end_elevation_m": 1091.5171442664473, "start_xy": [ 764984.8488454984, 6515232.824311984 ], "end_xy": [ 764981.3150998036, 6515236.3616331965 ] }, "min_10m": { "gradient_pct": 0.007681316494654311, "start_distance_m": 7775.0, "end_distance_m": 7785.0, "midpoint_distance_m": 7780.0, "start_elevation_m": 1137.658928319432, "end_elevation_m": 1137.6596964510816, "start_xy": [ 763300.0636714277, 6516399.577963577 ], "end_xy": [ 763292.327068915, 6516405.913970329 ] }, "min_20m": { "gradient_pct": 0.21335976956265768, "start_distance_m": 7770.0, "end_distance_m": 7790.0, "midpoint_distance_m": 7780.0, "start_elevation_m": 1137.6205654671646, "end_elevation_m": 1137.6632374210772, "start_xy": [ 763303.931972684, 6516396.409960201 ], "end_xy": [ 763288.4587676588, 6516409.0819737045 ] }, "min_25m": { "gradient_pct": 0.3760920252543656, "start_distance_m": 7770.0, "end_distance_m": 7795.0, "midpoint_distance_m": 7782.5, "start_elevation_m": 1137.6205654671646, "end_elevation_m": 1137.7145884734782, "start_xy": [ 763303.931972684, 6516396.409960201 ], "end_xy": [ 763284.5904664025, 6516412.249977081 ] }, "min_50m": { "gradient_pct": 0.5069722549533253, "start_distance_m": 7743.0, "end_distance_m": 7793.0, "midpoint_distance_m": 7768.0, "start_elevation_m": 1137.4341825811002, "end_elevation_m": 1137.687668708577, "start_xy": [ 763324.7785318156, 6516379.258569078 ], "end_xy": [ 763286.1377869049, 6516410.98277573 ] }, "min_100m": { "gradient_pct": 0.8603357005561065, "start_distance_m": 7738.0, "end_distance_m": 7838.0, "midpoint_distance_m": 7788.0, "start_elevation_m": 1137.3691593641406, "end_elevation_m": 1138.2294950646967, "start_xy": [ 763328.1138985989, 6516375.533608887 ], "end_xy": [ 763247.3579362973, 6516433.093352558 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 10.192914685046617, "start_distance_m": 9897.0, "end_distance_m": 9899.0, "midpoint_distance_m": 9898.0, "start_elevation_m": 1212.7238644304562, "end_elevation_m": 1212.927722724157, "start_xy": [ 761591.0046448704, 6516457.352540304 ], "end_xy": [ 761589.0566886995, 6516456.899255894 ] }, "max_3m": { "gradient_pct": 9.018081037303697, "start_distance_m": 483.0, "end_distance_m": 486.0, "midpoint_distance_m": 484.5, "start_elevation_m": 888.1675934460457, "end_elevation_m": 888.4381358771648, "start_xy": [ 766662.4162742135, 6512477.611792514 ], "end_xy": [ 766664.5411589977, 6512479.663984635 ] } }, "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": 0.033, "obstruction_max_height_m": 21.17, "flagged_windows_m": [ 2 ] }, "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-mc6", "road_pbf": "block-batch-fr-mc6.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_E760-N6515_0m5@22LHD4ML-2025-09-15.tif", "data/cache/fr/ign-lidarhd_dtm_E760-N6516_0m5@22LHD4ML-2025-09-15.tif", "data/cache/fr/ign-lidarhd_dtm_E761-N6516_0m5@22LHD4ML-2025-09-15.tif", "data/cache/fr/ign-lidarhd_dtm_E762-N6515_0m5@22LHD4ML-2025-09-15.tif", "data/cache/fr/ign-lidarhd_dtm_E762-N6516_0m5@22LHD4ML-2025-09-15.tif", "data/cache/fr/ign-lidarhd_dtm_E763-N6515_0m5@22LHD4ML-2025-09-15.tif", "data/cache/fr/ign-lidarhd_dtm_E763-N6516_0m5@22LHD4ML-2025-09-15.tif", "data/cache/fr/ign-lidarhd_dtm_E764-N6514_0m5@22LHD4ML-2025-09-15.tif", "data/cache/fr/ign-lidarhd_dtm_E764-N6515_0m5@22LHD4ML-2025-09-15.tif", "data/cache/fr/ign-lidarhd_dtm_E765-N6514_0m5@22LHD4ML-2025-09-15.tif", "data/cache/fr/ign-lidarhd_dtm_E765-N6515_0m5@22LHD4ML-2025-09-15.tif", "data/cache/fr/ign-lidarhd_dtm_E766-N6512_0m5@22LHD4ML-2025-09-15.tif", "data/cache/fr/ign-lidarhd_dtm_E766-N6513_0m5@22LHD4ML-2025-09-15.tif", "data/cache/fr/ign-lidarhd_dtm_E766-N6514_0m5@22LHD4ML-2025-09-15.tif", "data/cache/fr/ign-lidarhd_dtm_E767-N6512_0m5@22LHD4ML-2025-09-15.tif", "data/cache/fr/ign-lidarhd_dtm_E767-N6513_0m5@22LHD4ML-2025-09-15.tif", "data/cache/fr/ign-lidarhd_dtm_E767-N6514_0m5@22LHD4ML-2025-09-15.tif" ], "calculated_at": "2026-09-22T18:21:00+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc6.osm.pbf", "osm_snapshot": "", "run_id": "fr-mc6", "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": [ "E760-N6515", "E760-N6516", "E761-N6516", "E762-N6515", "E762-N6516", "E763-N6515", "E763-N6516", "E764-N6514", "E764-N6515", "E765-N6514", "E765-N6515", "E766-N6512", "E766-N6513", "E766-N6514", "E767-N6512", "E767-N6513", "E767-N6514" ], "elevation_blocks": [ "22LHD4ML@2025-09-15" ], "ign_dalles": [ "LHD_FXX_0760_6516_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0760_6517_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0761_6517_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0762_6516_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0762_6517_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0763_6516_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0763_6517_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0764_6515_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0764_6516_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0765_6515_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0765_6516_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0766_6513_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0766_6514_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0766_6515_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0767_6513_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0767_6514_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0767_6515_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "22LHD4ML" ], "ign_editions": [ "2025-09-15" ], "ign_dsm_edition": { "LHD_FXX_0760_6516_MNT_O_0M50_LAMB93_IGN69": "2025-09-15", "LHD_FXX_0760_6517_MNT_O_0M50_LAMB93_IGN69": "2025-09-15", "LHD_FXX_0761_6517_MNT_O_0M50_LAMB93_IGN69": "2025-09-15", "LHD_FXX_0762_6516_MNT_O_0M50_LAMB93_IGN69": "2025-09-15", "LHD_FXX_0762_6517_MNT_O_0M50_LAMB93_IGN69": "2025-09-15", "LHD_FXX_0763_6516_MNT_O_0M50_LAMB93_IGN69": "2025-09-15", "LHD_FXX_0763_6517_MNT_O_0M50_LAMB93_IGN69": "2025-09-15", "LHD_FXX_0764_6515_MNT_O_0M50_LAMB93_IGN69": "2025-09-15", "LHD_FXX_0764_6516_MNT_O_0M50_LAMB93_IGN69": "2025-09-15", "LHD_FXX_0765_6515_MNT_O_0M50_LAMB93_IGN69": "2025-09-15", "LHD_FXX_0765_6516_MNT_O_0M50_LAMB93_IGN69": "2025-09-15", "LHD_FXX_0766_6513_MNT_O_0M50_LAMB93_IGN69": "2025-09-15", "LHD_FXX_0766_6514_MNT_O_0M50_LAMB93_IGN69": "2025-09-15", "LHD_FXX_0766_6515_MNT_O_0M50_LAMB93_IGN69": "2025-09-15", "LHD_FXX_0767_6513_MNT_O_0M50_LAMB93_IGN69": "2025-09-15", "LHD_FXX_0767_6514_MNT_O_0M50_LAMB93_IGN69": "2025-09-15", "LHD_FXX_0767_6515_MNT_O_0M50_LAMB93_IGN69": "2025-09-15" }, "climb_origin": "named-pass", "via": [ "Col de la croix de Ladret" ], "structure_own_ways": 5, "carriageway": { "stations": 444, "stations_resolved": 444, "width_median_m": 7.25, "width_p10_m": 6.0, "width_min_m": 2.75, "width_max_m": 11.5, "bounded_share": 0.306, "unbounded_share": 0.694, "confidence_median": 0.0, "width_median_bounded_m": 7.25, "window_m": [ 461.0, 486.0 ], "width_at_max25_m": 7.25, "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": 444, "stations_resolved": 444, "width_median_m": 9.0, "width_p10_m": 4.75, "width_min_m": 0.0, "width_max_m": 12.0, "bounded_share": 0.646, "unbounded_share": 0.354, "confidence_median": 1.0, "width_median_bounded_m": 8.25, "window_m": [ 461.0, 486.0 ], "width_at_max25_m": 9.0, "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": "Chalmazel-Jeansagni\u00e8re", "county": "Loire", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }