{ "ocl_version": "0.1.0", "name": "Col de Tami\u00e9 from Verrens-Arvey", "slug": "col-de-tamie-from-verrens-arvey", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 13.98987749842604, "diagnostic": true, "flags": [ "texture_excluded", "canopy_or_structure" ], "start_distance_m": 5494.0, "end_distance_m": 5496.0, "start_elevation_m": 873.7928069632803, "end_elevation_m": 874.0726045132488, "min_gradient_pct": -14.186595887900921, "suppressed_max_gradient_pct": 42.45734169741695, "suppressed_location_m": [ 5034.0, 5036.0 ] }, { "window_m": 3.0, "max_gradient_pct": 11.21625108939194, "diagnostic": true, "flags": [ "texture_excluded", "canopy_or_structure" ], "start_distance_m": 5494.0, "end_distance_m": 5497.0, "start_elevation_m": 873.7928069632803, "end_elevation_m": 874.1292944959621, "min_gradient_pct": -6.538461886744547, "suppressed_max_gradient_pct": 42.438174056364154, "suppressed_location_m": [ 5033.0, 5036.0 ] }, { "window_m": 5.0, "max_gradient_pct": 9.919830632366029, "diagnostic": false, "flags": [ "texture_excluded", "canopy_or_structure" ], "start_distance_m": 5041.0, "end_distance_m": 5046.0, "start_elevation_m": 841.1002937870132, "end_elevation_m": 841.5962853186315, "min_gradient_pct": -4.233186434087202, "suppressed_max_gradient_pct": 33.61840344035045, "suppressed_location_m": [ 5033.0, 5038.0 ] }, { "window_m": 10.0, "max_gradient_pct": 9.73953785176036, "diagnostic": false, "flags": [ "texture_excluded" ], "start_distance_m": 284.0, "end_distance_m": 294.0, "start_elevation_m": 522.0347920174123, "end_elevation_m": 523.0087458025884, "min_gradient_pct": -1.3705686186085586, "suppressed_max_gradient_pct": 22.446528878389245, "suppressed_location_m": [ 5032.0, 5042.0 ] }, { "window_m": 20.0, "max_gradient_pct": 9.61214202522001, "diagnostic": false, "flags": [ "texture_excluded" ], "start_distance_m": 284.0, "end_distance_m": 304.0, "start_elevation_m": 522.0347920174123, "end_elevation_m": 523.9572204224563, "min_gradient_pct": 1.0670250332492515, "suppressed_max_gradient_pct": 15.473104136390248, "suppressed_location_m": [ 5032.0, 5052.0 ] }, { "window_m": 25.0, "max_gradient_pct": 9.406066781898517, "diagnostic": false, "flags": [ "texture_excluded" ], "start_distance_m": 284.0, "end_distance_m": 309.0, "start_elevation_m": 522.0347920174123, "end_elevation_m": 524.386308712887, "min_gradient_pct": 2.0885497324125026, "suppressed_max_gradient_pct": 13.963839849946908, "suppressed_location_m": [ 5032.0, 5057.0 ] }, { "window_m": 50.0, "max_gradient_pct": 9.157085381174966, "diagnostic": false, "flags": [ "texture_excluded", "canopy_or_structure" ], "start_distance_m": 263.0, "end_distance_m": 313.0, "start_elevation_m": 520.1914631439411, "end_elevation_m": 524.7700058345285, "min_gradient_pct": 3.9475946772149655, "suppressed_max_gradient_pct": 10.815999838864855, "suppressed_location_m": [ 5032.0, 5082.0 ] }, { "window_m": 100.0, "max_gradient_pct": 8.919973189802704, "diagnostic": false, "flags": [ "texture_excluded", "canopy_or_structure" ], "start_distance_m": 216.0, "end_distance_m": 316.0, "start_elevation_m": 516.1218537450935, "end_elevation_m": 525.0418269348962, "min_gradient_pct": 4.2326651213378454, "suppressed_max_gradient_pct": 9.289328597052759, "suppressed_location_m": [ 5032.0, 5132.0 ] } ], "shape": { "ascent_concentration": 0.259, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 22.0, "shape_class": "sustained" }, "length_m": 5788.167629994699, "start_elevation_m": 500.25334516504563, "end_elevation_m": 892.4389288378943, "endpoint_gain_m": 392.1855836728487, "overall_gradient_pct": 6.775643152429015, "accumulated_ascent_m": 393.1312443296871, "window_maxima": { "max_5m": { "gradient_pct": 9.919830632366029, "start_distance_m": 5041.0, "end_distance_m": 5046.0, "midpoint_distance_m": 5043.5, "start_elevation_m": 841.1002937870132, "end_elevation_m": 841.5962853186315, "start_xy": [ 957022.4699443309, 6513022.151425637 ], "end_xy": [ 957027.4688965635, 6513022.0490704905 ] }, "max_10m": { "gradient_pct": 9.73953785176036, "start_distance_m": 284.0, "end_distance_m": 294.0, "midpoint_distance_m": 289.0, "start_elevation_m": 522.0347920174123, "end_elevation_m": 523.0087458025884, "start_xy": [ 958079.1230598966, 6511768.51486833 ], "end_xy": [ 958071.0624702433, 6511774.4332206715 ] }, "max_20m": { "gradient_pct": 9.61214202522001, "start_distance_m": 284.0, "end_distance_m": 304.0, "midpoint_distance_m": 294.0, "start_elevation_m": 522.0347920174123, "end_elevation_m": 523.9572204224563, "start_xy": [ 958079.1230598966, 6511768.51486833 ], "end_xy": [ 958063.0018805899, 6511780.351573013 ] }, "max_25m": { "gradient_pct": 9.406066781898517, "start_distance_m": 284.0, "end_distance_m": 309.0, "midpoint_distance_m": 296.5, "start_elevation_m": 522.0347920174123, "end_elevation_m": 524.386308712887, "start_xy": [ 958079.1230598966, 6511768.51486833 ], "end_xy": [ 958058.9715857632, 6511783.310749184 ] }, "max_50m": { "gradient_pct": 9.157085381174966, "start_distance_m": 263.0, "end_distance_m": 313.0, "midpoint_distance_m": 288.0, "start_elevation_m": 520.1914631439411, "end_elevation_m": 524.7700058345285, "start_xy": [ 958096.0502981688, 6511756.086328412 ], "end_xy": [ 958055.7473499018, 6511785.678090121 ] }, "max_100m": { "gradient_pct": 8.919973189802704, "start_distance_m": 216.0, "end_distance_m": 316.0, "midpoint_distance_m": 266.0, "start_elevation_m": 516.1218537450935, "end_elevation_m": 525.0418269348962, "start_xy": [ 958138.8251067536, 6511737.395292418 ], "end_xy": [ 958053.3291730059, 6511787.453595824 ] } }, "window_minima": { "min_5m": { "gradient_pct": -4.233186434087202, "start_distance_m": 5017.0, "end_distance_m": 5022.0, "midpoint_distance_m": 5019.5, "start_elevation_m": 839.0900384973468, "end_elevation_m": 838.8783791756424, "start_xy": [ 956999.4824324292, 6513015.998717908 ], "end_xy": [ 957004.034896394, 6513018.066342596 ] }, "min_10m": { "gradient_pct": -1.3705686186085586, "start_distance_m": 5014.0, "end_distance_m": 5024.0, "midpoint_distance_m": 5019.0, "start_elevation_m": 838.8699752187161, "end_elevation_m": 838.7329183568553, "start_xy": [ 956997.0148999471, 6513014.2945177555 ], "end_xy": [ 957005.8571528181, 6513018.889944769 ] }, "min_20m": { "gradient_pct": 1.0670250332492515, "start_distance_m": 5011.0, "end_distance_m": 5031.0, "midpoint_distance_m": 5021.0, "start_elevation_m": 838.7212768944142, "end_elevation_m": 838.9346819010641, "start_xy": [ 956994.5538454559, 6513012.578938906 ], "end_xy": [ 957012.5905408383, 6513020.798388343 ] }, "min_25m": { "gradient_pct": 2.0885497324125026, "start_distance_m": 5007.0, "end_distance_m": 5032.0, "midpoint_distance_m": 5019.5, "start_elevation_m": 838.4429700626486, "end_elevation_m": 838.9651074957517, "start_xy": [ 956991.5797183246, 6513009.944288804 ], "end_xy": [ 957013.5757297662, 6513020.969860721 ] }, "min_50m": { "gradient_pct": 3.9475946772149655, "start_distance_m": 1032.0, "end_distance_m": 1082.0, "midpoint_distance_m": 1057.0, "start_elevation_m": 577.8727152376059, "end_elevation_m": 579.8465125762134, "start_xy": [ 957418.1499676027, 6511749.112309953 ], "end_xy": [ 957422.5609541148, 6511798.282959589 ] }, "min_100m": { "gradient_pct": 4.2326651213378454, "start_distance_m": 1718.0, "end_distance_m": 1818.0, "midpoint_distance_m": 1768.0, "start_elevation_m": 614.5597696347893, "end_elevation_m": 618.7924347561271, "start_xy": [ 957619.1225331534, 6512304.598283272 ], "end_xy": [ 957694.3128516081, 6512369.54990232 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 13.98987749842604, "start_distance_m": 5494.0, "end_distance_m": 5496.0, "midpoint_distance_m": 5495.0, "start_elevation_m": 873.7928069632803, "end_elevation_m": 874.0726045132488, "start_xy": [ 957467.5886763377, 6513007.040505382 ], "end_xy": [ 957469.4811679961, 6513007.687402069 ] }, "max_3m": { "gradient_pct": 11.21625108939194, "start_distance_m": 5494.0, "end_distance_m": 5497.0, "midpoint_distance_m": 5495.5, "start_elevation_m": 873.7928069632803, "end_elevation_m": 874.1292944959621, "start_xy": [ 957467.5886763377, 6513007.040505382 ], "end_xy": [ 957470.4274138253, 6513008.010850412 ] } }, "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": { "texture_suppression": { "masked_fraction": 0.002, "windows_resited": [ 2.0, 3.0, 5.0, 10.0, 20.0, 25.0, 50.0, 100.0 ], "windows_unresolved": [] }, "texture_windows": { "rounds": 1, "windows_masked": [ { "window_m": 5.0, "start_m": 5033.0, "end_m": 5038.0, "raw_pct": 33.62, "reason": "short-step" } ], "advisory": [], "unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.154, "obstruction_max_height_m": 29.69, "flagged_windows_m": [ 2, 3, 5, 50, 100 ] }, "excluded_ranges_m": [ [ 5031.0, 5040.0 ] ], "review": [], "extent": [ "may_start_earlier", "may_continue_beyond_end" ] }, "provenance": { "analysis_version": "0.1.0", "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_E956-N6512_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E956-N6513_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E957-N6511_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E957-N6512_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E957-N6513_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E958-N6511_0m5.tif" ], "calculated_at": "2026-09-17T05:15:43+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-alps3.osm.pbf", "osm_snapshot": "", "run_id": "fr-alps3", "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": [ "E956-N6512", "E956-N6513", "E957-N6511", "E957-N6512", "E957-N6513", "E958-N6511" ], "elevation_blocks": [ "21LHD5QL2@2025-03-26" ], "ign_dalles": [ "LHD_FXX_0956_6513_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0956_6514_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0957_6512_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0957_6513_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0957_6514_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0958_6512_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD5QL2" ], "ign_editions": [ "2025-03-26" ], "ign_dsm_edition": { "LHD_FXX_0956_6513_MNT_O_0M50_LAMB93_IGN69": "2025-03-26", "LHD_FXX_0956_6514_MNT_O_0M50_LAMB93_IGN69": "2025-03-26", "LHD_FXX_0957_6512_MNT_O_0M50_LAMB93_IGN69": "2025-03-26", "LHD_FXX_0957_6513_MNT_O_0M50_LAMB93_IGN69": "2025-03-26", "LHD_FXX_0957_6514_MNT_O_0M50_LAMB93_IGN69": "2025-03-26", "LHD_FXX_0958_6512_MNT_O_0M50_LAMB93_IGN69": "2025-03-26" }, "climb_origin": "named-pass", "structure_own_ways": 12, "carriageway": { "stations": 238, "stations_resolved": 238, "width_median_m": 7.25, "width_p10_m": 5.5, "width_min_m": 2.5, "width_max_m": 12.0, "bounded_share": 0.391, "unbounded_share": 0.609, "confidence_median": 0.0, "width_median_bounded_m": 6.5, "window_m": [ 284.0, 309.0 ], "width_at_max25_m": 7.0, "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": 238, "stations_resolved": 238, "width_median_m": 8.0, "width_p10_m": 1.0, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.655, "unbounded_share": 0.345, "confidence_median": 1.0, "width_median_bounded_m": 6.75, "window_m": [ 284.0, 309.0 ], "width_at_max25_m": 8.75, "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": "Verrens-Arvey", "county": "Savoie", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }