{ "ocl_version": "0.1.0", "name": "Avenue des Fourches", "slug": "avenue-des-fourches", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 30.92821316915888, "diagnostic": true, "flags": [ "structure_excluded", "canopy_or_structure" ], "start_distance_m": 483.0, "end_distance_m": 485.0, "start_elevation_m": 361.8549609172389, "end_elevation_m": 362.47352518062206, "min_gradient_pct": -29.918937162270254, "suppressed_max_gradient_pct": 43.85214920018825, "suppressed_location_m": [ 405.0, 407.0 ] }, { "window_m": 3.0, "max_gradient_pct": 30.228929636100094, "diagnostic": true, "flags": [ "structure_excluded" ], "start_distance_m": 482.0, "end_distance_m": 485.0, "start_elevation_m": 361.56665729153906, "end_elevation_m": 362.47352518062206, "min_gradient_pct": -28.083782231415928, "suppressed_max_gradient_pct": 33.236348461050135, "suppressed_location_m": [ 404.0, 407.0 ] }, { "window_m": 5.0, "max_gradient_pct": 29.7952974290547, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 482.0, "end_distance_m": 487.0, "start_elevation_m": 361.56665729153906, "end_elevation_m": 363.0564221629918, "min_gradient_pct": -21.942363791728212 }, { "window_m": 10.0, "max_gradient_pct": 27.490903299942033, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 479.0, "end_distance_m": 489.0, "start_elevation_m": 360.79540273483644, "end_elevation_m": 363.54449306483065, "min_gradient_pct": -12.246843979266373 }, { "window_m": 20.0, "max_gradient_pct": 23.022309025493257, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 474.0, "end_distance_m": 494.0, "start_elevation_m": 359.8689508306279, "end_elevation_m": 364.47341263572656, "min_gradient_pct": -5.9583268440536585 }, { "window_m": 25.0, "max_gradient_pct": 21.31774280300715, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 468.0, "end_distance_m": 493.0, "start_elevation_m": 358.9991106129778, "end_elevation_m": 364.3285463137296, "min_gradient_pct": -5.148955828283306 }, { "window_m": 50.0, "max_gradient_pct": 18.876283002153855, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 439.0, "end_distance_m": 489.0, "start_elevation_m": 354.1063515637537, "end_elevation_m": 363.54449306483065, "min_gradient_pct": -1.867558633998101 }, { "window_m": 100.0, "max_gradient_pct": 16.340756745083524, "diagnostic": false, "flags": [ "structure_excluded", "canopy_or_structure" ], "start_distance_m": 410.0, "end_distance_m": 510.0, "start_elevation_m": 349.2358758183508, "end_elevation_m": 365.5766325634343, "min_gradient_pct": 2.8838896316950695, "suppressed_max_gradient_pct": 17.5494162687026, "suppressed_location_m": [ 393.0, 493.0 ] } ], "shape": { "ascent_concentration": 0.593, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 121.0, "shape_class": "stepped" }, "length_m": 554.5663001218709, "start_elevation_m": 329.1701706611327, "end_elevation_m": 364.4836787536617, "endpoint_gain_m": 35.31350809252899, "overall_gradient_pct": 6.367770289101327, "accumulated_ascent_m": 37.44183140518203, "window_maxima": { "max_5m": { "gradient_pct": 29.7952974290547, "start_distance_m": 482.0, "end_distance_m": 487.0, "midpoint_distance_m": 484.5, "start_elevation_m": 361.56665729153906, "end_elevation_m": 363.0564221629918, "start_xy": [ 915906.6546062543, 6273264.784615461 ], "end_xy": [ 915906.7656499613, 6273269.783382238 ] }, "max_10m": { "gradient_pct": 27.490903299942033, "start_distance_m": 479.0, "end_distance_m": 489.0, "midpoint_distance_m": 484.0, "start_elevation_m": 360.79540273483644, "end_elevation_m": 363.54449306483065, "start_xy": [ 915908.2769407226, 6273262.59423518 ], "end_xy": [ 915906.8100674441, 6273271.782888949 ] }, "max_20m": { "gradient_pct": 23.022309025493257, "start_distance_m": 474.0, "end_distance_m": 494.0, "midpoint_distance_m": 484.0, "start_elevation_m": 359.8689508306279, "end_elevation_m": 364.47341263572656, "start_xy": [ 915912.2412681365, 6273259.547251727 ], "end_xy": [ 915906.9211111512, 6273276.781655727 ] }, "max_25m": { "gradient_pct": 21.31774280300715, "start_distance_m": 468.0, "end_distance_m": 493.0, "midpoint_distance_m": 480.5, "start_elevation_m": 358.9991106129778, "end_elevation_m": 364.3285463137296, "start_xy": [ 915917.9576429466, 6273257.948190281 ], "end_xy": [ 915906.8989024098, 6273275.781902371 ] }, "max_50m": { "gradient_pct": 18.876283002153855, "start_distance_m": 439.0, "end_distance_m": 489.0, "midpoint_distance_m": 464.0, "start_elevation_m": 354.1063515637537, "end_elevation_m": 363.54449306483065, "start_xy": [ 915945.3017354063, 6273248.699565231 ], "end_xy": [ 915906.8100674441, 6273271.782888949 ] }, "max_100m": { "gradient_pct": 16.340756745083524, "start_distance_m": 410.0, "end_distance_m": 510.0, "midpoint_distance_m": 460.0, "start_elevation_m": 349.2358758183508, "end_elevation_m": 365.5766325634343, "start_xy": [ 915970.7739269591, 6273234.967745756 ], "end_xy": [ 915907.2764510137, 6273292.777709414 ] } }, "window_minima": { "min_5m": { "gradient_pct": -21.942363791728212, "start_distance_m": 522.0, "end_distance_m": 527.0, "midpoint_distance_m": 524.5, "start_elevation_m": 365.9146868393329, "end_elevation_m": 364.8175686497465, "start_xy": [ 915907.5430573706, 6273304.774747426 ], "end_xy": [ 915907.6542064153, 6273309.773511861 ] }, "min_10m": { "gradient_pct": -12.246843979266373, "start_distance_m": 522.0, "end_distance_m": 532.0, "midpoint_distance_m": 527.0, "start_elevation_m": 365.9146868393329, "end_elevation_m": 364.69000244140625, "start_xy": [ 915907.5430573706, 6273304.774747426 ], "end_xy": [ 915907.7653554599, 6273314.772276298 ] }, "min_20m": { "gradient_pct": -5.9583268440536585, "start_distance_m": 522.0, "end_distance_m": 542.0, "midpoint_distance_m": 532.0, "start_elevation_m": 365.9146868393329, "end_elevation_m": 364.72302147052216, "start_xy": [ 915907.5430573706, 6273304.774747426 ], "end_xy": [ 915907.9876535493, 6273324.769805171 ] }, "min_25m": { "gradient_pct": -5.148955828283306, "start_distance_m": 522.0, "end_distance_m": 547.0, "midpoint_distance_m": 534.5, "start_elevation_m": 365.9146868393329, "end_elevation_m": 364.62744788226206, "start_xy": [ 915907.5430573706, 6273304.774747426 ], "end_xy": [ 915908.0988025939, 6273329.768569607 ] }, "min_50m": { "gradient_pct": -1.867558633998101, "start_distance_m": 504.0, "end_distance_m": 554.0, "midpoint_distance_m": 529.0, "start_elevation_m": 365.42102955128746, "end_elevation_m": 364.4872502342884, "start_xy": [ 915907.1431985653, 6273286.779189281 ], "end_xy": [ 915908.2544112565, 6273336.766839818 ] }, "min_100m": { "gradient_pct": 2.8838896316950695, "start_distance_m": 0.0, "end_distance_m": 100.0, "midpoint_distance_m": 50.0, "start_elevation_m": 329.1701706611327, "end_elevation_m": 332.0540602928278, "start_xy": [ 915806.066, 6272952.738 ], "end_xy": [ 915872.7201942058, 6273027.223507404 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 30.92821316915888, "start_distance_m": 483.0, "end_distance_m": 485.0, "midpoint_distance_m": 484.0, "start_elevation_m": 361.8549609172389, "end_elevation_m": 362.47352518062206, "start_xy": [ 915906.6768149957, 6273265.784368816 ], "end_xy": [ 915906.7212324785, 6273267.783875527 ] }, "max_3m": { "gradient_pct": 30.228929636100094, "start_distance_m": 482.0, "end_distance_m": 485.0, "midpoint_distance_m": 483.5, "start_elevation_m": 361.56665729153906, "end_elevation_m": 362.47352518062206, "start_xy": [ 915906.6546062543, 6273264.784615461 ], "end_xy": [ 915906.7212324785, 6273267.783875527 ] } }, "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": [ 2.0, 3.0, 100.0 ], "windows_unresolved": [], "minima_resited": [], "minima_unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.315, "obstruction_max_height_m": 18.09, "flagged_windows_m": [ 2, 5, 10, 20, 25, 50, 100 ] }, "excluded_ranges_m": [ [ 404.0, 409.0 ] ], "review": [], "extent": [] }, "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-pr4", "road_pbf": "block-batch-fr-pr4.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_E915-N6272_0m5@21LHD7PQ-2025-03-14.tif", "data/cache/fr/ign-lidarhd_dtm_E915-N6273_0m5@21LHD7PQ-2025-03-14.tif", "data/cache/fr/ign-lidarhd_dtm_E916-N6272_0m5@21LHD7PQ-2025-03-14.tif", "data/cache/fr/ign-lidarhd_dtm_E916-N6273_0m5@21LHD7PQ-2025-03-14.tif" ], "calculated_at": "2026-09-25T09:32:24+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-pr4.osm.pbf", "osm_snapshot": "", "run_id": "fr-pr4", "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": [ "E915-N6272", "E915-N6273", "E916-N6272", "E916-N6273" ], "elevation_blocks": [ "21LHD7PQ@2025-03-14" ], "ign_dalles": [ "LHD_FXX_0915_6273_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0915_6274_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0916_6273_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0916_6274_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD7PQ" ], "ign_editions": [ "2025-03-14" ], "ign_dsm_edition": { "LHD_FXX_0915_6273_MNT_O_0M50_LAMB93_IGN69": "2025-03-14", "LHD_FXX_0915_6274_MNT_O_0M50_LAMB93_IGN69": "2025-03-14", "LHD_FXX_0916_6273_MNT_O_0M50_LAMB93_IGN69": "2025-03-14", "LHD_FXX_0916_6274_MNT_O_0M50_LAMB93_IGN69": "2025-03-14" }, "climb_origin": "discovered", "structure_own_ways": 4, "carriageway": { "stations": 29, "stations_resolved": 29, "width_median_m": 6.0, "width_p10_m": 4.2, "width_min_m": 3.75, "width_max_m": 10.5, "bounded_share": 0.241, "unbounded_share": 0.759, "confidence_median": 0.0, "width_median_bounded_m": 4.75, "window_m": [ 468.0, 493.0 ], "width_at_max25_m": 4.75, "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": 29, "stations_resolved": 29, "width_median_m": 3.75, "width_p10_m": 1.0, "width_min_m": 0.75, "width_max_m": 11.5, "bounded_share": 0.793, "unbounded_share": 0.207, "confidence_median": 1.0, "width_median_bounded_m": 3.0, "window_m": [ 468.0, 493.0 ], "width_at_max25_m": 3.5, "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": "Puyloubier", "county": "Bouches-du-Rh\u00f4ne", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }