{ "ocl_version": "0.1.0", "name": "Col du Pranlet from Lachamp-Rapha\u00ebl", "slug": "col-du-pranlet-from-lachamp-raphael", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 18.60806672294757, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 149.0, "end_distance_m": 151.0, "start_elevation_m": 1300.5321616832998, "end_elevation_m": 1300.9043230177588, "min_gradient_pct": -2.163454805508991 }, { "window_m": 3.0, "max_gradient_pct": 17.3816674338165, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 149.0, "end_distance_m": 152.0, "start_elevation_m": 1300.5321616832998, "end_elevation_m": 1301.0536117063143, "min_gradient_pct": -0.30808160622655123 }, { "window_m": 5.0, "max_gradient_pct": 16.371411913714837, "diagnostic": false, "flags": [], "start_distance_m": 1035.0, "end_distance_m": 1040.0, "start_elevation_m": 1365.0238861552323, "end_elevation_m": 1365.842456750918, "min_gradient_pct": 0.4281605543246769 }, { "window_m": 10.0, "max_gradient_pct": 13.681124293625544, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 149.0, "end_distance_m": 159.0, "start_elevation_m": 1300.5321616832998, "end_elevation_m": 1301.9002741126624, "min_gradient_pct": 1.0031534951326648 }, { "window_m": 20.0, "max_gradient_pct": 12.786674886489209, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 149.0, "end_distance_m": 169.0, "start_elevation_m": 1300.5321616832998, "end_elevation_m": 1303.0894966605977, "min_gradient_pct": 1.5780553928743757 }, { "window_m": 25.0, "max_gradient_pct": 12.681870967311625, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 149.0, "end_distance_m": 174.0, "start_elevation_m": 1300.5321616832998, "end_elevation_m": 1303.7026294251277, "min_gradient_pct": 1.7105047686736725 }, { "window_m": 50.0, "max_gradient_pct": 11.156397725586885, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 143.0, "end_distance_m": 193.0, "start_elevation_m": 1299.9795908846081, "end_elevation_m": 1305.5577897474016, "min_gradient_pct": 3.0213230936365107 }, { "window_m": 100.0, "max_gradient_pct": 10.462674409116516, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 77.0, "end_distance_m": 177.0, "start_elevation_m": 1293.5423342300953, "end_elevation_m": 1304.0050086392118, "min_gradient_pct": 4.105795907329821 } ], "shape": { "ascent_concentration": 0.328, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 54.0, "shape_class": "sustained" }, "length_m": 1053.2701185639658, "start_elevation_m": 1286.0833135937385, "end_elevation_m": 1366.1310261684566, "endpoint_gain_m": 80.04771257471816, "overall_gradient_pct": 7.599922485587615, "accumulated_ascent_m": 80.20541216163019, "window_maxima": { "max_5m": { "gradient_pct": 16.371411913714837, "start_distance_m": 1035.0, "end_distance_m": 1040.0, "midpoint_distance_m": 1037.5, "start_elevation_m": 1365.0238861552323, "end_elevation_m": 1365.842456750918, "start_xy": [ 799924.2933463233, 6413611.827873075 ], "end_xy": [ 799926.1136700587, 6413616.4754070025 ] }, "max_10m": { "gradient_pct": 13.681124293625544, "start_distance_m": 149.0, "end_distance_m": 159.0, "midpoint_distance_m": 154.0, "start_elevation_m": 1300.5321616832998, "end_elevation_m": 1301.9002741126624, "start_xy": [ 799569.023591304, 6413032.081535341 ], "end_xy": [ 799568.3899556049, 6413042.061440441 ] }, "max_20m": { "gradient_pct": 12.786674886489209, "start_distance_m": 149.0, "end_distance_m": 169.0, "midpoint_distance_m": 159.0, "start_elevation_m": 1300.5321616832998, "end_elevation_m": 1303.0894966605977, "start_xy": [ 799569.023591304, 6413032.081535341 ], "end_xy": [ 799566.3182271883, 6413051.837418234 ] }, "max_25m": { "gradient_pct": 12.681870967311625, "start_distance_m": 149.0, "end_distance_m": 174.0, "midpoint_distance_m": 161.5, "start_elevation_m": 1300.5321616832998, "end_elevation_m": 1303.7026294251277, "start_xy": [ 799569.023591304, 6413032.081535341 ], "end_xy": [ 799565.235260536, 6413056.718727816 ] }, "max_50m": { "gradient_pct": 11.156397725586885, "start_distance_m": 143.0, "end_distance_m": 193.0, "midpoint_distance_m": 168.0, "start_elevation_m": 1299.9795908846081, "end_elevation_m": 1305.5577897474016, "start_xy": [ 799569.4037727234, 6413026.093592281 ], "end_xy": [ 799559.8641677188, 6413074.912565154 ] }, "max_100m": { "gradient_pct": 10.462674409116516, "start_distance_m": 77.0, "end_distance_m": 177.0, "midpoint_distance_m": 127.0, "start_elevation_m": 1293.5423342300953, "end_elevation_m": 1304.0050086392118, "start_xy": [ 799544.6630588846, 6412970.7980173845 ], "end_xy": [ 799564.5854805446, 6413059.647513565 ] } }, "window_minima": { "min_5m": { "gradient_pct": 0.4281605543246769, "start_distance_m": 1048.0, "end_distance_m": 1053.0, "midpoint_distance_m": 1050.5, "start_elevation_m": 1366.1154627555186, "end_elevation_m": 1366.1368707832348, "start_xy": [ 799928.7620820593, 6413623.9829653865 ], "end_xy": [ 799928.0475990261, 6413628.931653495 ] }, "min_10m": { "gradient_pct": 1.0031534951326648, "start_distance_m": 1043.0, "end_distance_m": 1053.0, "midpoint_distance_m": 1048.0, "start_elevation_m": 1366.0365554337216, "end_elevation_m": 1366.1368707832348, "start_xy": [ 799927.1676772006, 6413619.284155646 ], "end_xy": [ 799928.0475990261, 6413628.931653495 ] }, "min_20m": { "gradient_pct": 1.5780553928743757, "start_distance_m": 709.0, "end_distance_m": 729.0, "midpoint_distance_m": 719.0, "start_elevation_m": 1345.059771487354, "end_elevation_m": 1345.375382565929, "start_xy": [ 799643.5649217952, 6413474.589560978 ], "end_xy": [ 799662.0538625076, 6413481.648276869 ] }, "min_25m": { "gradient_pct": 1.7105047686736725, "start_distance_m": 707.0, "end_distance_m": 732.0, "midpoint_distance_m": 719.5, "start_elevation_m": 1345.0260668408346, "end_elevation_m": 1345.453693033003, "start_xy": [ 799641.5683013684, 6413474.705780044 ], "end_xy": [ 799664.6054064169, 6413483.226131007 ] }, "min_50m": { "gradient_pct": 3.0213230936365107, "start_distance_m": 700.0, "end_distance_m": 750.0, "midpoint_distance_m": 725.0, "start_elevation_m": 1344.6879951894073, "end_elevation_m": 1346.1986567362255, "start_xy": [ 799634.5801298744, 6413475.112546774 ], "end_xy": [ 799679.9146698724, 6413492.6932558315 ] }, "min_100m": { "gradient_pct": 4.105795907329821, "start_distance_m": 661.0, "end_distance_m": 761.0, "midpoint_distance_m": 711.0, "start_elevation_m": 1342.6633074999531, "end_elevation_m": 1346.769103407283, "start_xy": [ 799596.5755461914, 6413469.7633295255 ], "end_xy": [ 799689.270330873, 6413498.478721002 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 18.60806672294757, "start_distance_m": 149.0, "end_distance_m": 151.0, "midpoint_distance_m": 150.0, "start_elevation_m": 1300.5321616832998, "end_elevation_m": 1300.9043230177588, "start_xy": [ 799569.023591304, 6413032.081535341 ], "end_xy": [ 799568.8968641642, 6413034.077516361 ] }, "max_3m": { "gradient_pct": 17.3816674338165, "start_distance_m": 149.0, "end_distance_m": 152.0, "midpoint_distance_m": 150.5, "start_elevation_m": 1300.5321616832998, "end_elevation_m": 1301.0536117063143, "start_xy": [ 799569.023591304, 6413032.081535341 ], "end_xy": [ 799568.8335005942, 6413035.075506871 ] } }, "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": 0.078, "obstruction_max_height_m": 9.38, "flagged_windows_m": [ 2, 3, 10, 20, 25, 50, 100 ] }, "review": [], "extent": [ "may_start_earlier", "may_continue_beyond_end" ] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "076a8e7f889cfb3c2cf6b3de65a6030c7155b1f0", "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-mc-cols", "road_pbf": "block-batch-fr-mc-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: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_E799-N6412_0m5@22LHD5NN-2025-06-04.tif", "data/cache/fr/ign-lidarhd_dtm_E799-N6413_0m5@22LHD5NN-2025-06-04.tif" ], "calculated_at": "2026-09-22T22:27:55+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc-cols.osm.pbf", "osm_snapshot": "", "run_id": "fr-mc-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": [ "E799-N6412", "E799-N6413" ], "elevation_blocks": [ "22LHD5NN@2025-06-04" ], "ign_dalles": [ "LHD_FXX_0799_6413_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0799_6414_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "22LHD5NN" ], "ign_editions": [ "2025-06-04" ], "ign_dsm_edition": { "LHD_FXX_0799_6413_MNT_O_0M50_LAMB93_IGN69": "2025-06-04", "LHD_FXX_0799_6414_MNT_O_0M50_LAMB93_IGN69": "2025-06-04" }, "climb_origin": "named-pass", "structure_own_ways": 1, "carriageway": { "stations": 49, "stations_resolved": 49, "width_median_m": 4.5, "width_p10_m": 2.7, "width_min_m": 1.75, "width_max_m": 10.75, "bounded_share": 0.388, "unbounded_share": 0.612, "confidence_median": 0.0, "width_median_bounded_m": 4.5, "window_m": [ 149.0, 174.0 ], "width_at_max25_m": 3.5, "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": 49, "stations_resolved": 49, "width_median_m": 7.25, "width_p10_m": 2.1, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.816, "unbounded_share": 0.184, "confidence_median": 1.0, "width_median_bounded_m": 6.5, "window_m": [ 149.0, 174.0 ], "width_at_max25_m": 2.5, "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": "Lachamp-Rapha\u00ebl", "county": "Ard\u00e8che", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }