{ "ocl_version": "0.1.0", "name": "Route de Taloire", "slug": "route-de-taloire", "confidence": "U", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 47.795860691610415, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 245.0, "end_distance_m": 247.0, "start_elevation_m": 718.9627444356797, "end_elevation_m": 719.9186616495119, "min_gradient_pct": -11.057223385574844 }, { "window_m": 3.0, "max_gradient_pct": 46.36841570067342, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 244.0, "end_distance_m": 247.0, "start_elevation_m": 718.5276091784917, "end_elevation_m": 719.9186616495119, "min_gradient_pct": -5.028811407078138 }, { "window_m": 5.0, "max_gradient_pct": 42.96275886085368, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 242.0, "end_distance_m": 247.0, "start_elevation_m": 717.7705237064692, "end_elevation_m": 719.9186616495119, "min_gradient_pct": -1.5740554841113408 }, { "window_m": 10.0, "max_gradient_pct": 32.65768829626836, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 240.0, "end_distance_m": 250.0, "start_elevation_m": 717.2234763214295, "end_elevation_m": 720.4892451510564, "min_gradient_pct": 0.7441031365272011 }, { "window_m": 20.0, "max_gradient_pct": 24.398931854782404, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 228.0, "end_distance_m": 248.0, "start_elevation_m": 715.271586183408, "end_elevation_m": 720.1513725543645, "min_gradient_pct": 1.3364431525411646 }, { "window_m": 25.0, "max_gradient_pct": 23.037606282705383, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 223.0, "end_distance_m": 248.0, "start_elevation_m": 714.3919709836881, "end_elevation_m": 720.1513725543645, "min_gradient_pct": 1.346966611118205 }, { "window_m": 50.0, "max_gradient_pct": 19.24914371763043, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 200.0, "end_distance_m": 250.0, "start_elevation_m": 710.8646732922412, "end_elevation_m": 720.4892451510564, "min_gradient_pct": 1.5419923270062554 }, { "window_m": 100.0, "max_gradient_pct": 16.137970338537798, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 393.0, "end_distance_m": 493.0, "start_elevation_m": 739.4961779222062, "end_elevation_m": 755.634148260744, "min_gradient_pct": 2.6255095515045923 } ], "shape": { "ascent_concentration": 0.344, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 203.0, "shape_class": "sustained" }, "length_m": 1969.7108144844883, "start_elevation_m": 687.5777908623088, "end_elevation_m": 908.8543903383, "endpoint_gain_m": 221.27659947599125, "overall_gradient_pct": 11.233963780307702, "accumulated_ascent_m": 222.1747484886315, "window_maxima": { "max_5m": { "gradient_pct": 42.96275886085368, "start_distance_m": 242.0, "end_distance_m": 247.0, "midpoint_distance_m": 244.5, "start_elevation_m": 717.7705237064692, "end_elevation_m": 719.9186616495119, "start_xy": [ 977886.6834004292, 6309395.358543922 ], "end_xy": [ 977881.6947434999, 6309395.021940235 ] }, "max_10m": { "gradient_pct": 32.65768829626836, "start_distance_m": 240.0, "end_distance_m": 250.0, "midpoint_distance_m": 245.0, "start_elevation_m": 717.2234763214295, "end_elevation_m": 720.4892451510564, "start_xy": [ 977888.6788632009, 6309395.493185396 ], "end_xy": [ 977878.7015493424, 6309394.819978024 ] }, "max_20m": { "gradient_pct": 24.398931854782404, "start_distance_m": 228.0, "end_distance_m": 248.0, "midpoint_distance_m": 238.0, "start_elevation_m": 715.271586183408, "end_elevation_m": 720.1513725543645, "start_xy": [ 977900.6516398313, 6309396.301034244 ], "end_xy": [ 977880.697012114, 6309394.954619498 ] }, "max_25m": { "gradient_pct": 23.037606282705383, "start_distance_m": 223.0, "end_distance_m": 248.0, "midpoint_distance_m": 235.5, "start_elevation_m": 714.3919709836881, "end_elevation_m": 720.1513725543645, "start_xy": [ 977905.6402967606, 6309396.63763793 ], "end_xy": [ 977880.697012114, 6309394.954619498 ] }, "max_50m": { "gradient_pct": 19.24914371763043, "start_distance_m": 200.0, "end_distance_m": 250.0, "midpoint_distance_m": 225.0, "start_elevation_m": 710.8646732922412, "end_elevation_m": 720.4892451510564, "start_xy": [ 977926.9765953703, 6309403.8793806005 ], "end_xy": [ 977878.7015493424, 6309394.819978024 ] }, "max_100m": { "gradient_pct": 16.137970338537798, "start_distance_m": 393.0, "end_distance_m": 493.0, "midpoint_distance_m": 443.0, "start_elevation_m": 739.4961779222062, "end_elevation_m": 755.634148260744, "start_xy": [ 977890.3228411484, 6309342.033374643 ], "end_xy": [ 977878.7327487039, 6309312.366113531 ] } }, "window_minima": { "min_5m": { "gradient_pct": -1.5740554841113408, "start_distance_m": 386.0, "end_distance_m": 391.0, "midpoint_distance_m": 388.5, "start_elevation_m": 739.4483626914655, "end_elevation_m": 739.3696599172599, "start_xy": [ 977885.7516149047, 6309347.334684918 ], "end_xy": [ 977889.0167765074, 6309343.548034721 ] }, "min_10m": { "gradient_pct": 0.7441031365272011, "start_distance_m": 0.0, "end_distance_m": 10.0, "midpoint_distance_m": 5.0, "start_elevation_m": 687.5777908623088, "end_elevation_m": 687.6522011759615, "start_xy": [ 977855.264, 6309534.089 ], "end_xy": [ 977862.235663175, 6309526.919905735 ] }, "min_20m": { "gradient_pct": 1.3364431525411646, "start_distance_m": 713.0, "end_distance_m": 733.0, "midpoint_distance_m": 723.0, "start_elevation_m": 781.0380460234127, "end_elevation_m": 781.3053346539209, "start_xy": [ 977881.373121381, 6309149.303168104 ], "end_xy": [ 977864.1025880727, 6309139.223801629 ] }, "min_25m": { "gradient_pct": 1.346966611118205, "start_distance_m": 702.0, "end_distance_m": 727.0, "midpoint_distance_m": 714.5, "start_elevation_m": 780.8702952922628, "end_elevation_m": 781.2070369450423, "start_xy": [ 977891.0732834572, 6309154.490349968 ], "end_xy": [ 977869.2569781519, 6309142.295000565 ] }, "min_50m": { "gradient_pct": 1.5419923270062554, "start_distance_m": 696.0, "end_distance_m": 746.0, "midpoint_distance_m": 721.0, "start_elevation_m": 780.7675597814094, "end_elevation_m": 781.5385559449126, "start_xy": [ 977896.3701420608, 6309157.305937213 ], "end_xy": [ 977853.5123278134, 6309131.745623104 ] }, "min_100m": { "gradient_pct": 2.6255095515045923, "start_distance_m": 690.0, "end_distance_m": 790.0, "midpoint_distance_m": 740.0, "start_elevation_m": 780.4932090495255, "end_elevation_m": 783.1187186010301, "start_xy": [ 977902.078623501, 6309159.153432719 ], "end_xy": [ 977822.7082914431, 6309100.490356192 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 47.795860691610415, "start_distance_m": 245.0, "end_distance_m": 247.0, "midpoint_distance_m": 246.0, "start_elevation_m": 718.9627444356797, "end_elevation_m": 719.9186616495119, "start_xy": [ 977883.6902062716, 6309395.15658171 ], "end_xy": [ 977881.6947434999, 6309395.021940235 ] }, "max_3m": { "gradient_pct": 46.36841570067342, "start_distance_m": 244.0, "end_distance_m": 247.0, "midpoint_distance_m": 245.5, "start_elevation_m": 718.5276091784917, "end_elevation_m": 719.9186616495119, "start_xy": [ 977884.6879376575, 6309395.223902447 ], "end_xy": [ 977881.6947434999, 6309395.021940235 ] } }, "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": 0.011, "windows_resited": [], "windows_unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.385, "obstruction_max_height_m": 15.98, "flagged_windows_m": [ 2, 3, 5, 10, 20, 25, 50, 100 ] }, "excluded_ranges_m": [ [ 0.0, 20.0 ] ], "review": [ "short_window_divergence" ], "extent": [ "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_E977-N6308_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E977-N6309_0m5.tif" ], "calculated_at": "2026-09-17T05:14:48+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": [ "E977-N6308", "E977-N6309" ], "elevation_blocks": [ "21LHD7QP@2025-04-02" ], "ign_dalles": [ "LHD_FXX_0977_6309_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0977_6310_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD7QP" ], "ign_editions": [ "2025-04-02" ], "ign_dsm_edition": { "LHD_FXX_0977_6309_MNT_O_0M50_LAMB93_IGN69": "2025-04-02", "LHD_FXX_0977_6310_MNT_O_0M50_LAMB93_IGN69": "2025-04-02" }, "climb_origin": "discovered", "structure_own_ways": 2, "structure_mask_ranges_m": [ [ 0.0, 15.0 ] ], "carriageway": { "stations": 85, "stations_resolved": 85, "width_median_m": 4.0, "width_p10_m": 2.25, "width_min_m": 1.0, "width_max_m": 9.75, "bounded_share": 0.541, "unbounded_share": 0.459, "confidence_median": 0.553, "width_median_bounded_m": 4.0, "window_m": [ 223.0, 248.0 ], "width_at_max25_m": 3.25, "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": 85, "stations_resolved": 85, "width_median_m": 2.75, "width_p10_m": 1.0, "width_min_m": 0.5, "width_max_m": 9.75, "bounded_share": 0.929, "unbounded_share": 0.071, "confidence_median": 1.0, "width_median_bounded_m": 2.75, "window_m": [ 223.0, 248.0 ], "width_at_max25_m": 3.25, "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": "Castellane", "county": "Alpes-de-Haute-Provence", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }