{ "ocl_version": "0.1.0", "name": "Chemin du Collet Redon", "slug": "chemin-du-collet-redon", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 23.308087129882438, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 43.0, "end_distance_m": 45.0, "start_elevation_m": 327.6716760788534, "end_elevation_m": 328.13783782145106, "min_gradient_pct": -8.799190569322946 }, { "window_m": 3.0, "max_gradient_pct": 22.07461955404142, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 72.0, "end_distance_m": 75.0, "start_elevation_m": 333.5124482869672, "end_elevation_m": 334.1746868735884, "min_gradient_pct": -8.617486746019646 }, { "window_m": 5.0, "max_gradient_pct": 21.584051441574275, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 41.0, "end_distance_m": 46.0, "start_elevation_m": 327.2477629098687, "end_elevation_m": 328.3269654819474, "min_gradient_pct": -8.233645575758146 }, { "window_m": 10.0, "max_gradient_pct": 21.415100769453943, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 71.0, "end_distance_m": 81.0, "start_elevation_m": 333.31858385676185, "end_elevation_m": 335.46009393370724, "min_gradient_pct": -7.171554319548932 }, { "window_m": 20.0, "max_gradient_pct": 20.88375363202914, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 63.0, "end_distance_m": 83.0, "start_elevation_m": 331.68493657822063, "end_elevation_m": 335.86168730462646, "min_gradient_pct": -6.717901153666048 }, { "window_m": 25.0, "max_gradient_pct": 20.618830038723445, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 60.0, "end_distance_m": 85.0, "start_elevation_m": 331.09045380784085, "end_elevation_m": 336.2451613175217, "min_gradient_pct": -6.304356381184334 }, { "window_m": 50.0, "max_gradient_pct": 20.409096067403198, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 37.0, "end_distance_m": 87.0, "start_elevation_m": 326.4373519145389, "end_elevation_m": 336.6418999482405, "min_gradient_pct": -5.510144913432441 }, { "window_m": 100.0, "max_gradient_pct": 18.26124756323776, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 18.0, "end_distance_m": 118.0, "start_elevation_m": 323.11187546022734, "end_elevation_m": 341.3731230234651, "min_gradient_pct": -4.53890478998494 } ], "shape": { "ascent_concentration": 0.612, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 144.0, "shape_class": "stepped" }, "length_m": 754.6835280192179, "start_elevation_m": 321.56415009643587, "end_elevation_m": 359.77785300610844, "endpoint_gain_m": 38.21370290967258, "overall_gradient_pct": 5.063540078842091, "accumulated_ascent_m": 45.35926572928025, "window_maxima": { "max_5m": { "gradient_pct": 21.584051441574275, "start_distance_m": 41.0, "end_distance_m": 46.0, "midpoint_distance_m": 43.5, "start_elevation_m": 327.2477629098687, "end_elevation_m": 328.3269654819474, "start_xy": [ 949386.749933824, 6251306.669445727 ], "end_xy": [ 949383.5077894159, 6251302.8630695455 ] }, "max_10m": { "gradient_pct": 21.415100769453943, "start_distance_m": 71.0, "end_distance_m": 81.0, "midpoint_distance_m": 76.0, "start_elevation_m": 333.31858385676185, "end_elevation_m": 335.46009393370724, "start_xy": [ 949367.4349450765, 6251283.716144016 ], "end_xy": [ 949361.1065769681, 6251275.973292016 ] }, "max_20m": { "gradient_pct": 20.88375363202914, "start_distance_m": 63.0, "end_distance_m": 83.0, "midpoint_distance_m": 73.0, "start_elevation_m": 331.68493657822063, "end_elevation_m": 335.86168730462646, "start_xy": [ 949372.497639563, 6251289.9104256155 ], "end_xy": [ 949359.8409033464, 6251274.424721616 ] }, "max_25m": { "gradient_pct": 20.618830038723445, "start_distance_m": 60.0, "end_distance_m": 85.0, "midpoint_distance_m": 72.5, "start_elevation_m": 331.09045380784085, "end_elevation_m": 336.2451613175217, "start_xy": [ 949374.4297850734, 6251292.205216236 ], "end_xy": [ 949358.5752297248, 6251272.876151216 ] }, "max_50m": { "gradient_pct": 20.409096067403198, "start_distance_m": 37.0, "end_distance_m": 87.0, "midpoint_distance_m": 62.0, "start_elevation_m": 326.4373519145389, "end_elevation_m": 336.6418999482405, "start_xy": [ 949389.3436493505, 6251309.714546672 ], "end_xy": [ 949357.3095561031, 6251271.327580816 ] }, "max_100m": { "gradient_pct": 18.26124756323776, "start_distance_m": 18.0, "end_distance_m": 118.0, "midpoint_distance_m": 68.0, "start_elevation_m": 323.11187546022734, "end_elevation_m": 341.3731230234651, "start_xy": [ 949401.8748586891, 6251323.992635404 ], "end_xy": [ 949337.6916149674, 6251247.324739618 ] } }, "window_minima": { "min_5m": { "gradient_pct": -8.233645575758146, "start_distance_m": 310.0, "end_distance_m": 315.0, "midpoint_distance_m": 312.5, "start_elevation_m": 347.26472058601894, "end_elevation_m": 346.85303830723103, "start_xy": [ 949200.7372098656, 6251238.5923735425 ], "end_xy": [ 949197.4297405432, 6251242.342126425 ] }, "min_10m": { "gradient_pct": -7.171554319548932, "start_distance_m": 309.0, "end_distance_m": 319.0, "midpoint_distance_m": 314.0, "start_elevation_m": 347.32019196419753, "end_elevation_m": 346.60303653224264, "start_xy": [ 949201.3987037301, 6251237.842422966 ], "end_xy": [ 949194.7837650854, 6251245.341928732 ] }, "min_20m": { "gradient_pct": -6.717901153666048, "start_distance_m": 308.0, "end_distance_m": 328.0, "midpoint_distance_m": 318.0, "start_elevation_m": 347.4227305492259, "end_elevation_m": 346.0791503184927, "start_xy": [ 949202.0601975946, 6251237.092472389 ], "end_xy": [ 949189.0346263893, 6251252.25859891 ] }, "min_25m": { "gradient_pct": -6.304356381184334, "start_distance_m": 303.0, "end_distance_m": 328.0, "midpoint_distance_m": 315.5, "start_elevation_m": 347.65523941378876, "end_elevation_m": 346.0791503184927, "start_xy": [ 949205.4315789202, 6251233.404338565 ], "end_xy": [ 949189.0346263893, 6251252.25859891 ] }, "min_50m": { "gradient_pct": -5.510144913432441, "start_distance_m": 278.0, "end_distance_m": 328.0, "midpoint_distance_m": 303.0, "start_elevation_m": 348.8342227752089, "end_elevation_m": 346.0791503184927, "start_xy": [ 949223.636201961, 6251216.274678031 ], "end_xy": [ 949189.0346263893, 6251252.25859891 ] }, "min_100m": { "gradient_pct": -4.53890478998494, "start_distance_m": 229.0, "end_distance_m": 329.0, "midpoint_distance_m": 279.0, "start_elevation_m": 350.57594686237707, "end_elevation_m": 346.0370420723921, "start_xy": [ 949260.6666631323, 6251184.198378941 ], "end_xy": [ 949188.4307233505, 6251253.055656699 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 23.308087129882438, "start_distance_m": 43.0, "end_distance_m": 45.0, "midpoint_distance_m": 44.0, "start_elevation_m": 327.6716760788534, "end_elevation_m": 328.13783782145106, "start_xy": [ 949385.4530760607, 6251305.146895254 ], "end_xy": [ 949384.1562182975, 6251303.624344782 ] }, "max_3m": { "gradient_pct": 22.07461955404142, "start_distance_m": 72.0, "end_distance_m": 75.0, "midpoint_distance_m": 73.5, "start_elevation_m": 333.5124482869672, "end_elevation_m": 334.1746868735884, "start_xy": [ 949366.8021082656, 6251282.941858816 ], "end_xy": [ 949364.9035978331, 6251280.619003216 ] } }, "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": 0.276, "obstruction_max_height_m": 16.91, "flagged_windows_m": [ 2, 3, 5, 10, 20, 25, 50, 100 ] }, "review": [], "extent": [ "may_start_earlier" ] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "41205ec4649bb0a4093af76ff34281a5d9a13832", "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-pr6", "road_pbf": "block-batch-fr-pr6.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:ba95a0bf562c86eb" }, "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_E948-N6251_0m5@22LHD6QQ-2025-03-24.tif", "data/cache/fr/ign-lidarhd_dtm_E949-N6251_0m5@22LHD6QQ-2025-03-24.tif" ], "calculated_at": "2026-09-25T09:13:15+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-pr6.osm.pbf", "osm_snapshot": "", "run_id": "fr-pr6", "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": [ "E948-N6251", "E949-N6251" ], "elevation_blocks": [ "22LHD6QQ@2025-03-24" ], "ign_dalles": [ "LHD_FXX_0948_6252_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0949_6252_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "22LHD6QQ" ], "ign_editions": [ "2025-03-24" ], "ign_dsm_edition": { "LHD_FXX_0948_6252_MNT_O_0M50_LAMB93_IGN69": "2025-03-24", "LHD_FXX_0949_6252_MNT_O_0M50_LAMB93_IGN69": "2025-03-24" }, "climb_origin": "discovered", "structure_own_ways": 1, "carriageway": { "stations": 36, "stations_resolved": 36, "width_median_m": 5.12, "width_p10_m": 3.25, "width_min_m": 2.5, "width_max_m": 12.0, "bounded_share": 0.056, "unbounded_share": 0.944, "confidence_median": 0.0, "width_median_bounded_m": 4.75, "window_m": [ 60.0, 85.0 ], "width_at_max25_m": 3.5, "window_stations": 6, "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": 36, "stations_resolved": 36, "width_median_m": 2.88, "width_p10_m": 0.88, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.833, "unbounded_share": 0.167, "confidence_median": 1.0, "width_median_bounded_m": 2.5, "window_m": [ 60.0, 85.0 ], "width_at_max25_m": 1.25, "window_stations": 6, "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": "Rocbaron", "county": "Var", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }