{ "ocl_version": "0.1.0", "name": "Chemin des Amandiers", "slug": "chemin-des-amandiers-3", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 30.50619904209313, "diagnostic": true, "flags": [], "start_distance_m": 371.0, "end_distance_m": 373.0, "start_elevation_m": 84.6689109243677, "end_elevation_m": 85.27903490520956, "min_gradient_pct": -4.154140382772198 }, { "window_m": 3.0, "max_gradient_pct": 29.365821842859674, "diagnostic": true, "flags": [], "start_distance_m": 32.0, "end_distance_m": 35.0, "start_elevation_m": 44.0196003134645, "end_elevation_m": 44.90057496875029, "min_gradient_pct": -2.7727198587451576 }, { "window_m": 5.0, "max_gradient_pct": 28.500433523013555, "diagnostic": false, "flags": [], "start_distance_m": 368.0, "end_distance_m": 373.0, "start_elevation_m": 83.85401322905888, "end_elevation_m": 85.27903490520956, "min_gradient_pct": -1.5987579824346199 }, { "window_m": 10.0, "max_gradient_pct": 28.07867417387456, "diagnostic": false, "flags": [], "start_distance_m": 363.0, "end_distance_m": 373.0, "start_elevation_m": 82.4711674878221, "end_elevation_m": 85.27903490520956, "min_gradient_pct": -0.10848316570985617 }, { "window_m": 20.0, "max_gradient_pct": 26.878366732780847, "diagnostic": false, "flags": [], "start_distance_m": 355.0, "end_distance_m": 375.0, "start_elevation_m": 80.44785101947758, "end_elevation_m": 85.82352436603375, "min_gradient_pct": 0.5195200632218899 }, { "window_m": 25.0, "max_gradient_pct": 26.306086520261488, "diagnostic": false, "flags": [], "start_distance_m": 350.0, "end_distance_m": 375.0, "start_elevation_m": 79.24700273596838, "end_elevation_m": 85.82352436603375, "min_gradient_pct": 0.7290444704148058 }, { "window_m": 50.0, "max_gradient_pct": 23.939326020125062, "diagnostic": false, "flags": [], "start_distance_m": 327.0, "end_distance_m": 377.0, "start_elevation_m": 74.28751461031737, "end_elevation_m": 86.2571776203799, "min_gradient_pct": 3.1831338248819065 }, { "window_m": 100.0, "max_gradient_pct": 21.292919034856155, "diagnostic": false, "flags": [], "start_distance_m": 320.0, "end_distance_m": 420.0, "start_elevation_m": 73.26409946461742, "end_elevation_m": 94.55701849947357, "min_gradient_pct": 4.462361350392072 } ], "shape": { "ascent_concentration": 0.393, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 115.0, "shape_class": "sustained" }, "length_m": 470.9193165819546, "start_elevation_m": 38.08631732841425, "end_elevation_m": 96.19816158142378, "endpoint_gain_m": 58.11184425300952, "overall_gradient_pct": 12.340085064847038, "accumulated_ascent_m": 58.34058433997167, "window_maxima": { "max_5m": { "gradient_pct": 28.500433523013555, "start_distance_m": 368.0, "end_distance_m": 373.0, "midpoint_distance_m": 370.5, "start_elevation_m": 83.85401322905888, "end_elevation_m": 85.27903490520956, "start_xy": [ 1228553.6524601642, 6201984.392566881 ], "end_xy": [ 1228549.0356134681, 6201982.473002715 ] }, "max_10m": { "gradient_pct": 28.07867417387456, "start_distance_m": 363.0, "end_distance_m": 373.0, "midpoint_distance_m": 368.0, "start_elevation_m": 82.4711674878221, "end_elevation_m": 85.27903490520956, "start_xy": [ 1228558.2693068604, 6201986.312131046 ], "end_xy": [ 1228549.0356134681, 6201982.473002715 ] }, "max_20m": { "gradient_pct": 26.878366732780847, "start_distance_m": 355.0, "end_distance_m": 375.0, "midpoint_distance_m": 365.0, "start_elevation_m": 80.44785101947758, "end_elevation_m": 85.82352436603375, "start_xy": [ 1228565.7655130392, 6201989.098953917 ], "end_xy": [ 1228547.0908371066, 6201982.156593447 ] }, "max_25m": { "gradient_pct": 26.306086520261488, "start_distance_m": 350.0, "end_distance_m": 375.0, "midpoint_distance_m": 362.5, "start_elevation_m": 79.24700273596838, "end_elevation_m": 85.82352436603375, "start_xy": [ 1228570.4804292694, 6201990.76315491 ], "end_xy": [ 1228547.0908371066, 6201982.156593447 ] }, "max_50m": { "gradient_pct": 23.939326020125062, "start_distance_m": 327.0, "end_distance_m": 377.0, "midpoint_distance_m": 352.0, "start_elevation_m": 74.28751461031737, "end_elevation_m": 86.2571776203799, "start_xy": [ 1228591.841900769, 6201998.889836286 ], "end_xy": [ 1228545.0919715932, 6201982.089238718 ] }, "max_100m": { "gradient_pct": 21.292919034856155, "start_distance_m": 320.0, "end_distance_m": 420.0, "midpoint_distance_m": 370.0, "start_elevation_m": 73.26409946461742, "end_elevation_m": 94.55701849947357, "start_xy": [ 1228596.5476652263, 6202004.072092636 ], "end_xy": [ 1228552.8541017468, 6202021.388424912 ] } }, "window_minima": { "min_5m": { "gradient_pct": -1.5987579824346199, "start_distance_m": 449.0, "end_distance_m": 454.0, "midpoint_distance_m": 451.5, "start_elevation_m": 95.66762243620997, "end_elevation_m": 95.58768453708824, "start_xy": [ 1228561.8415978658, 6202048.886297361 ], "end_xy": [ 1228561.5634265307, 6202053.848053817 ] }, "min_10m": { "gradient_pct": -0.10848316570985617, "start_distance_m": 449.0, "end_distance_m": 459.0, "midpoint_distance_m": 454.0, "start_elevation_m": 95.66762243620997, "end_elevation_m": 95.65677411963898, "start_xy": [ 1228561.8415978658, 6202048.886297361 ], "end_xy": [ 1228561.1345006567, 6202058.829622104 ] }, "min_20m": { "gradient_pct": 0.5195200632218899, "start_distance_m": 441.0, "end_distance_m": 461.0, "midpoint_distance_m": 451.0, "start_elevation_m": 95.55471895067602, "end_elevation_m": 95.6586229633204, "start_xy": [ 1228559.1192519485, 6202041.363742429 ], "end_xy": [ 1228560.962930307, 6202060.822249418 ] }, "min_25m": { "gradient_pct": 0.7290444704148058, "start_distance_m": 436.0, "end_distance_m": 461.0, "midpoint_distance_m": 448.5, "start_elevation_m": 95.4763618457167, "end_elevation_m": 95.6586229633204, "start_xy": [ 1228557.4177857502, 6202036.662145596 ], "end_xy": [ 1228560.962930307, 6202060.822249418 ] }, "min_50m": { "gradient_pct": 3.1831338248819065, "start_distance_m": 420.0, "end_distance_m": 470.0, "midpoint_distance_m": 445.0, "start_elevation_m": 94.55701849947357, "end_elevation_m": 96.14858541191452, "start_xy": [ 1228552.8541017468, 6202021.388424912 ], "end_xy": [ 1228560.1908637336, 6202069.789072334 ] }, "min_100m": { "gradient_pct": 4.462361350392072, "start_distance_m": 213.0, "end_distance_m": 313.0, "midpoint_distance_m": 263.0, "start_elevation_m": 67.97747925300965, "end_elevation_m": 72.43984060340172, "start_xy": [ 1228543.7553340793, 6201932.010743761 ], "end_xy": [ 1228601.8247702997, 6202008.026747543 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 30.50619904209313, "start_distance_m": 371.0, "end_distance_m": 373.0, "midpoint_distance_m": 372.0, "start_elevation_m": 84.6689109243677, "end_elevation_m": 85.27903490520956, "start_xy": [ 1228550.8823521466, 6201983.240828382 ], "end_xy": [ 1228549.0356134681, 6201982.473002715 ] }, "max_3m": { "gradient_pct": 29.365821842859674, "start_distance_m": 32.0, "end_distance_m": 35.0, "midpoint_distance_m": 33.5, "start_elevation_m": 44.0196003134645, "end_elevation_m": 44.90057496875029, "start_xy": [ 1228610.004680774, 6201893.951347908 ], "end_xy": [ 1228607.0595556463, 6201893.380175444 ] } }, "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": 0.064, "obstruction_max_height_m": 10.34, "flagged_windows_m": [] }, "review": [], "extent": [ "may_start_earlier" ] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "33abfff569d4360542e616d0d42c1b94d0a711fa", "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-co4", "road_pbf": "block-batch-fr-co4.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": "sha256:2a717d675f2607cc" }, "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_E1228-N6201_0m5@21LHDCorseVS-2025-04-02.tif", "data/cache/fr/ign-lidarhd_dtm_E1228-N6202_0m5@21LHDCorseVS-2025-04-02.tif" ], "calculated_at": "2026-09-25T00:19:04+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-co4.osm.pbf", "osm_snapshot": "", "run_id": "fr-co4", "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": [ "E1228-N6201", "E1228-N6202" ], "elevation_blocks": [ "21LHDCorseVS@2025-04-02" ], "ign_dalles": [ "LHD_FXX_1228_6202_MNT_O_0M50_LAMB93_IGN78", "LHD_FXX_1228_6203_MNT_O_0M50_LAMB93_IGN78" ], "ign_missions": [ "21LHDCorseVS" ], "ign_editions": [ "2025-04-02" ], "ign_dsm_edition": { "LHD_FXX_1228_6202_MNT_O_0M50_LAMB93_IGN78": "2025-04-02", "LHD_FXX_1228_6203_MNT_O_0M50_LAMB93_IGN78": "2025-04-02" }, "climb_origin": "discovered", "structure_own_ways": 4, "carriageway": { "stations": 23, "stations_resolved": 23, "width_median_m": 5.25, "width_p10_m": 2.3, "width_min_m": 2.0, "width_max_m": 9.75, "bounded_share": 0.696, "unbounded_share": 0.304, "confidence_median": 0.845, "width_median_bounded_m": 4.0, "window_m": [ 350.0, 375.0 ], "width_at_max25_m": 2.62, "window_stations": 6, "single_track": true, "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": 23, "stations_resolved": 23, "width_median_m": 5.25, "width_p10_m": 1.4, "width_min_m": 1.0, "width_max_m": 12.0, "bounded_share": 0.826, "unbounded_share": 0.174, "confidence_median": 1.0, "width_median_bounded_m": 4.0, "window_m": [ 350.0, 375.0 ], "width_at_max25_m": 1.62, "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": "San-Martino-di-Lota", "county": "Haute-Corse", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }