{ "ocl_version": "0.1.0", "name": "Chemin de Biarre", "slug": "chemin-de-biarre", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 26.413946411480538, "diagnostic": true, "flags": [], "start_distance_m": 703.0, "end_distance_m": 705.0, "start_elevation_m": 284.86102560640717, "end_elevation_m": 285.3893045346368, "min_gradient_pct": 0.4492424127619188 }, { "window_m": 3.0, "max_gradient_pct": 25.8135304979362, "diagnostic": true, "flags": [], "start_distance_m": 706.0, "end_distance_m": 709.0, "start_elevation_m": 285.5510377424312, "end_elevation_m": 286.3254436573693, "min_gradient_pct": 1.681196393292339 }, { "window_m": 5.0, "max_gradient_pct": 25.158724738844285, "diagnostic": false, "flags": [], "start_distance_m": 706.0, "end_distance_m": 711.0, "start_elevation_m": 285.5510377424312, "end_elevation_m": 286.80897397937343, "min_gradient_pct": 2.4762889209068817 }, { "window_m": 10.0, "max_gradient_pct": 24.569447617992637, "diagnostic": false, "flags": [], "start_distance_m": 492.0, "end_distance_m": 502.0, "start_elevation_m": 251.35659634348917, "end_elevation_m": 253.81354110528844, "min_gradient_pct": 2.560004008827832 }, { "window_m": 20.0, "max_gradient_pct": 23.9554755231687, "diagnostic": false, "flags": [], "start_distance_m": 484.0, "end_distance_m": 504.0, "start_elevation_m": 249.5003773441965, "end_elevation_m": 254.29147244883023, "min_gradient_pct": 3.0570421189273134 }, { "window_m": 25.0, "max_gradient_pct": 23.62443288354882, "diagnostic": false, "flags": [], "start_distance_m": 484.0, "end_distance_m": 509.0, "start_elevation_m": 249.5003773441965, "end_elevation_m": 255.4064855650837, "min_gradient_pct": 3.0907196197488247 }, { "window_m": 50.0, "max_gradient_pct": 22.07234454226341, "diagnostic": false, "flags": [], "start_distance_m": 465.0, "end_distance_m": 515.0, "start_elevation_m": 245.57609359656874, "end_elevation_m": 256.61226586770044, "min_gradient_pct": 3.5550952756090055 }, { "window_m": 100.0, "max_gradient_pct": 20.18887494950698, "diagnostic": false, "flags": [], "start_distance_m": 452.0, "end_distance_m": 552.0, "start_elevation_m": 243.2489443248874, "end_elevation_m": 263.43781927439437, "min_gradient_pct": 4.379772726940246 } ], "shape": { "ascent_concentration": 0.371, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 406.0, "shape_class": "sustained" }, "length_m": 972.5914128139459, "start_elevation_m": 196.52552643737943, "end_elevation_m": 306.340563168204, "endpoint_gain_m": 109.8150367308246, "overall_gradient_pct": 11.290973299168117, "accumulated_ascent_m": 109.8178791797601, "window_maxima": { "max_5m": { "gradient_pct": 25.158724738844285, "start_distance_m": 706.0, "end_distance_m": 711.0, "midpoint_distance_m": 708.5, "start_elevation_m": 285.5510377424312, "end_elevation_m": 286.80897397937343, "start_xy": [ 931561.4885597244, 6858669.7371879555 ], "end_xy": [ 931566.2642177034, 6858668.2562791575 ] }, "max_10m": { "gradient_pct": 24.569447617992637, "start_distance_m": 492.0, "end_distance_m": 502.0, "midpoint_distance_m": 497.0, "start_elevation_m": 251.35659634348917, "end_elevation_m": 253.81354110528844, "start_xy": [ 931364.4817468468, 6858737.219862052 ], "end_xy": [ 931373.2495195529, 6858732.410895243 ] }, "max_20m": { "gradient_pct": 23.9554755231687, "start_distance_m": 484.0, "end_distance_m": 504.0, "midpoint_distance_m": 494.0, "start_elevation_m": 249.5003773441965, "end_elevation_m": 254.29147244883023, "start_xy": [ 931357.4675286819, 6858741.0670355 ], "end_xy": [ 931375.0030740941, 6858731.449101881 ] }, "max_25m": { "gradient_pct": 23.62443288354882, "start_distance_m": 484.0, "end_distance_m": 509.0, "midpoint_distance_m": 496.5, "start_elevation_m": 249.5003773441965, "end_elevation_m": 255.4064855650837, "start_xy": [ 931357.4675286819, 6858741.0670355 ], "end_xy": [ 931379.3869604472, 6858729.044618476 ] }, "max_50m": { "gradient_pct": 22.07234454226341, "start_distance_m": 465.0, "end_distance_m": 515.0, "midpoint_distance_m": 490.0, "start_elevation_m": 245.57609359656874, "end_elevation_m": 256.61226586770044, "start_xy": [ 931340.8087605403, 6858750.204072438 ], "end_xy": [ 931384.6476240708, 6858726.159238391 ] }, "max_100m": { "gradient_pct": 20.18887494950698, "start_distance_m": 452.0, "end_distance_m": 552.0, "midpoint_distance_m": 502.0, "start_elevation_m": 243.2489443248874, "end_elevation_m": 263.43781927439437, "start_xy": [ 931329.4106560224, 6858756.45572929 ], "end_xy": [ 931415.2733413763, 6858705.528666889 ] } }, "window_minima": { "min_5m": { "gradient_pct": 2.4762889209068817, "start_distance_m": 825.0, "end_distance_m": 830.0, "midpoint_distance_m": 827.5, "start_elevation_m": 297.7279892852305, "end_elevation_m": 297.8518037312758, "start_xy": [ 931636.3873837789, 6858580.866017109 ], "end_xy": [ 931639.0911178763, 6858576.660090108 ] }, "min_10m": { "gradient_pct": 2.560004008827832, "start_distance_m": 825.0, "end_distance_m": 835.0, "midpoint_distance_m": 830.0, "start_elevation_m": 297.7279892852305, "end_elevation_m": 297.98398968611326, "start_xy": [ 931636.3873837789, 6858580.866017109 ], "end_xy": [ 931641.7948519739, 6858572.454163109 ] }, "min_20m": { "gradient_pct": 3.0570421189273134, "start_distance_m": 817.0, "end_distance_m": 837.0, "midpoint_distance_m": 827.0, "start_elevation_m": 297.4443206280473, "end_elevation_m": 298.05572905183277, "start_xy": [ 931632.061409223, 6858587.595500309 ], "end_xy": [ 931642.8763456128, 6858570.771792308 ] }, "min_25m": { "gradient_pct": 3.0907196197488247, "start_distance_m": 824.0, "end_distance_m": 849.0, "midpoint_distance_m": 836.5, "start_elevation_m": 297.6935235780339, "end_elevation_m": 298.4662034829711, "start_xy": [ 931635.8466369595, 6858581.707202509 ], "end_xy": [ 931649.4442659074, 6858560.730266041 ] }, "min_50m": { "gradient_pct": 3.5550952756090055, "start_distance_m": 817.0, "end_distance_m": 867.0, "midpoint_distance_m": 842.0, "start_elevation_m": 297.4443206280473, "end_elevation_m": 299.2218682658518, "start_xy": [ 931632.061409223, 6858587.595500309 ], "end_xy": [ 931659.6927082036, 6858545.932650338 ] }, "min_100m": { "gradient_pct": 4.379772726940246, "start_distance_m": 787.0, "end_distance_m": 887.0, "midpoint_distance_m": 837.0, "start_elevation_m": 295.9254991577323, "end_elevation_m": 300.30527188467255, "start_xy": [ 931615.8390046383, 6858612.831062309 ], "end_xy": [ 931671.0798663106, 6858529.490855112 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 26.413946411480538, "start_distance_m": 703.0, "end_distance_m": 705.0, "midpoint_distance_m": 704.0, "start_elevation_m": 284.86102560640717, "end_elevation_m": 285.3893045346368, "start_xy": [ 931558.6231649371, 6858670.625733235 ], "end_xy": [ 931560.5334281287, 6858670.033369715 ] }, "max_3m": { "gradient_pct": 25.8135304979362, "start_distance_m": 706.0, "end_distance_m": 709.0, "midpoint_distance_m": 707.5, "start_elevation_m": 285.5510377424312, "end_elevation_m": 286.3254436573693, "start_xy": [ 931561.4885597244, 6858669.7371879555 ], "end_xy": [ 931564.3539545118, 6858668.848642677 ] } }, "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": 0.0, "obstruction_max_height_m": 1.12, "flagged_windows_m": [] }, "review": [], "extent": [ "may_continue_beyond_end" ] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "16bcc1553fe58b280e0c4a66a3ab0980530490a6", "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-ne7", "road_pbf": "block-batch-fr-ne7.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": "sha256:18f786cf9fa98070" }, "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_E930-N6858_0m5@23LHD1PE-2025-01-29.tif", "data/cache/fr/ign-lidarhd_dtm_E930-N6859_0m5@23LHD1PE-2025-01-29.tif", "data/cache/fr/ign-lidarhd_dtm_E931-N6858_0m5@23LHD1PE-2025-01-29.tif", "data/cache/fr/ign-lidarhd_dtm_E931-N6859_0m5@23LHD1PE-2025-01-29.tif" ], "calculated_at": "2026-09-26T17:50:07+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-ne7.osm.pbf", "osm_snapshot": "", "run_id": "fr-ne7", "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": [ "E930-N6858", "E930-N6859", "E931-N6858", "E931-N6859" ], "elevation_blocks": [ "23LHD1PE@2025-01-29" ], "ign_dalles": [ "LHD_FXX_0930_6859_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0930_6860_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0931_6859_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0931_6860_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "23LHD1PE" ], "ign_editions": [ "2025-01-29" ], "ign_dsm_edition": { "LHD_FXX_0930_6859_MNT_O_0M50_LAMB93_IGN69": "2025-01-29", "LHD_FXX_0930_6860_MNT_O_0M50_LAMB93_IGN69": "2025-01-29", "LHD_FXX_0931_6859_MNT_O_0M50_LAMB93_IGN69": "2025-01-29", "LHD_FXX_0931_6860_MNT_O_0M50_LAMB93_IGN69": "2025-01-29" }, "climb_origin": "discovered", "seam_filled_samples": { "count": 0, "distances_m": [] }, "seam_filled_in_maximum": false, "structure_own_ways": 1, "carriageway": { "stations": 45, "stations_resolved": 45, "width_median_m": 6.25, "width_p10_m": 4.1, "width_min_m": 3.0, "width_max_m": 12.0, "bounded_share": 0.156, "unbounded_share": 0.844, "confidence_median": 0.0, "width_median_bounded_m": 5.5, "window_m": [ 484.0, 509.0 ], "width_at_max25_m": 6.25, "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": 45, "stations_resolved": 45, "width_median_m": 11.25, "width_p10_m": 8.85, "width_min_m": 4.75, "width_max_m": 12.0, "bounded_share": 0.111, "unbounded_share": 0.889, "confidence_median": 0.0, "width_median_bounded_m": 7.5, "window_m": [ 484.0, 509.0 ], "width_at_max25_m": 10.5, "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": "Custines", "county": "Meurthe-et-Moselle", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }