{ "ocl_version": "0.1.0", "name": "Chemin Daou Ribas", "slug": "chemin-daou-ribas", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 39.45411069406077, "diagnostic": true, "flags": [ "structure_excluded", "canopy_or_structure" ], "start_distance_m": 1229.0, "end_distance_m": 1231.0, "start_elevation_m": 595.7923583420626, "end_elevation_m": 596.5814405559438, "min_gradient_pct": -16.883295563036427, "suppressed_max_gradient_pct": 73.8186038000606, "suppressed_location_m": [ 283.0, 285.0 ] }, { "window_m": 3.0, "max_gradient_pct": 33.68887725422761, "diagnostic": true, "flags": [ "structure_excluded", "canopy_or_structure" ], "start_distance_m": 1228.0, "end_distance_m": 1231.0, "start_elevation_m": 595.570774238317, "end_elevation_m": 596.5814405559438, "min_gradient_pct": -15.882756477007357, "suppressed_max_gradient_pct": 54.346764797018444, "suppressed_location_m": [ 283.0, 286.0 ] }, { "window_m": 5.0, "max_gradient_pct": 32.74674041543449, "diagnostic": false, "flags": [ "structure_excluded" ], "start_distance_m": 29.0, "end_distance_m": 34.0, "start_elevation_m": 466.81815187897246, "end_elevation_m": 468.4554888997442, "min_gradient_pct": -15.99952113436757, "suppressed_max_gradient_pct": 36.80495697590686, "suppressed_location_m": [ 281.0, 286.0 ] }, { "window_m": 10.0, "max_gradient_pct": 32.14960184057759, "diagnostic": false, "flags": [], "start_distance_m": 24.0, "end_distance_m": 34.0, "start_elevation_m": 465.2405287156864, "end_elevation_m": 468.4554888997442, "min_gradient_pct": -14.49032070855651 }, { "window_m": 20.0, "max_gradient_pct": 31.736936118909114, "diagnostic": false, "flags": [], "start_distance_m": 14.0, "end_distance_m": 34.0, "start_elevation_m": 462.10810167596236, "end_elevation_m": 468.4554888997442, "min_gradient_pct": -12.291101577075665 }, { "window_m": 25.0, "max_gradient_pct": 31.674697073453217, "diagnostic": false, "flags": [], "start_distance_m": 9.0, "end_distance_m": 34.0, "start_elevation_m": 460.5368146313809, "end_elevation_m": 468.4554888997442, "min_gradient_pct": -11.109830390951174 }, { "window_m": 50.0, "max_gradient_pct": 27.2025130720084, "diagnostic": false, "flags": [], "start_distance_m": 0.0, "end_distance_m": 50.0, "start_elevation_m": 457.97532754437657, "end_elevation_m": 471.57658408038077, "min_gradient_pct": -5.898578199321491 }, { "window_m": 100.0, "max_gradient_pct": 23.51254899129339, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 0.0, "end_distance_m": 100.0, "start_elevation_m": 457.97532754437657, "end_elevation_m": 481.48787653566995, "min_gradient_pct": 0.5469374087649612 } ], "shape": { "ascent_concentration": 0.363, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 335.0, "shape_class": "sustained" }, "length_m": 1320.4592653609564, "start_elevation_m": 457.97532754437657, "end_elevation_m": 605.7257216865426, "endpoint_gain_m": 147.750394142166, "overall_gradient_pct": 11.18931859679726, "accumulated_ascent_m": 152.63430332835208, "window_maxima": { "max_5m": { "gradient_pct": 32.74674041543449, "start_distance_m": 29.0, "end_distance_m": 34.0, "midpoint_distance_m": 31.5, "start_elevation_m": 466.81815187897246, "end_elevation_m": 468.4554888997442, "start_xy": [ 1010606.194347051, 6290757.527691694 ], "end_xy": [ 1010603.3843020827, 6290761.663347298 ] }, "max_10m": { "gradient_pct": 32.14960184057759, "start_distance_m": 24.0, "end_distance_m": 34.0, "midpoint_distance_m": 29.0, "start_elevation_m": 465.2405287156864, "end_elevation_m": 468.4554888997442, "start_xy": [ 1010609.1270847651, 6290753.478486111 ], "end_xy": [ 1010603.3843020827, 6290761.663347298 ] }, "max_20m": { "gradient_pct": 31.736936118909114, "start_distance_m": 14.0, "end_distance_m": 34.0, "midpoint_distance_m": 24.0, "start_elevation_m": 462.10810167596236, "end_elevation_m": 468.4554888997442, "start_xy": [ 1010615.0250607678, 6290745.40297504 ], "end_xy": [ 1010603.3843020827, 6290761.663347298 ] }, "max_25m": { "gradient_pct": 31.674697073453217, "start_distance_m": 9.0, "end_distance_m": 34.0, "midpoint_distance_m": 21.5, "start_elevation_m": 460.5368146313809, "end_elevation_m": 468.4554888997442, "start_xy": [ 1010618.0982161883, 6290741.493773129 ], "end_xy": [ 1010603.3843020827, 6290761.663347298 ] }, "max_50m": { "gradient_pct": 27.2025130720084, "start_distance_m": 0.0, "end_distance_m": 50.0, "midpoint_distance_m": 25.0, "start_elevation_m": 457.97532754437657, "end_elevation_m": 471.57658408038077, "start_xy": [ 1010625.546, 6290736.441 ], "end_xy": [ 1010595.2931456984, 6290775.256266727 ] }, "max_100m": { "gradient_pct": 23.51254899129339, "start_distance_m": 0.0, "end_distance_m": 100.0, "midpoint_distance_m": 50.0, "start_elevation_m": 457.97532754437657, "end_elevation_m": 481.48787653566995, "start_xy": [ 1010625.546, 6290736.441 ], "end_xy": [ 1010593.915888805, 6290811.116581368 ] } }, "window_minima": { "min_5m": { "gradient_pct": -15.99952113436757, "start_distance_m": 713.0, "end_distance_m": 718.0, "midpoint_distance_m": 715.5, "start_elevation_m": 556.4323720861714, "end_elevation_m": 555.632396029453, "start_xy": [ 1010639.1671890033, 6291056.299164199 ], "end_xy": [ 1010643.9168364682, 6291057.861485857 ] }, "min_10m": { "gradient_pct": -14.49032070855651, "start_distance_m": 712.0, "end_distance_m": 722.0, "midpoint_distance_m": 717.0, "start_elevation_m": 556.5613910515707, "end_elevation_m": 555.112358980715, "start_xy": [ 1010638.2172595104, 6291055.986699868 ], "end_xy": [ 1010647.5664137778, 6291059.450485773 ] }, "min_20m": { "gradient_pct": -12.291101577075665, "start_distance_m": 711.0, "end_distance_m": 731.0, "midpoint_distance_m": 721.0, "start_elevation_m": 556.6547375295439, "end_elevation_m": 554.1965172141288, "start_xy": [ 1010637.2673300174, 6291055.674235537 ], "end_xy": [ 1010655.3956848602, 6291063.88923721 ] }, "min_25m": { "gradient_pct": -11.109830390951174, "start_distance_m": 706.0, "end_distance_m": 731.0, "midpoint_distance_m": 718.5, "start_elevation_m": 556.9739748118666, "end_elevation_m": 554.1965172141288, "start_xy": [ 1010632.7581228234, 6291053.521405126 ], "end_xy": [ 1010655.3956848602, 6291063.88923721 ] }, "min_50m": { "gradient_pct": -5.898578199321491, "start_distance_m": 690.0, "end_distance_m": 740.0, "midpoint_distance_m": 715.0, "start_elevation_m": 557.2130561247521, "end_elevation_m": 554.2637670250914, "start_xy": [ 1010619.3626565486, 6291045.227307653 ], "end_xy": [ 1010663.1523516114, 6291068.424676635 ] }, "min_100m": { "gradient_pct": 0.5469374087649612, "start_distance_m": 648.0, "end_distance_m": 748.0, "midpoint_distance_m": 698.0, "start_elevation_m": 554.2162291239663, "end_elevation_m": 554.7631665327312, "start_xy": [ 1010592.465856101, 6291012.975383259 ], "end_xy": [ 1010668.8821823394, 6291074.007600585 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 39.45411069406077, "start_distance_m": 1229.0, "end_distance_m": 1231.0, "midpoint_distance_m": 1230.0, "start_elevation_m": 595.7923583420626, "end_elevation_m": 596.5814405559438, "start_xy": [ 1010983.4775251928, 6291425.538140566 ], "end_xy": [ 1010984.526976679, 6291427.240683246 ] }, "max_3m": { "gradient_pct": 33.68887725422761, "start_distance_m": 1228.0, "end_distance_m": 1231.0, "midpoint_distance_m": 1229.5, "start_elevation_m": 595.570774238317, "end_elevation_m": 596.5814405559438, "start_xy": [ 1010982.9527994498, 6291424.686869226 ], "end_xy": [ 1010984.526976679, 6291427.240683246 ] } }, "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": 0.005, "windows_resited": [ 2.0, 3.0, 5.0 ], "windows_unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.444, "obstruction_max_height_m": 18.89, "flagged_windows_m": [ 2, 3, 100 ] }, "excluded_ranges_m": [ [ 282.0, 287.0 ] ], "review": [], "extent": [ "may_start_earlier", "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_E1010-N6290_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E1010-N6291_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E1011-N6291_0m5.tif" ], "calculated_at": "2026-09-17T02:29:10+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-alps4.osm.pbf", "osm_snapshot": "", "run_id": "fr-alps4", "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": [ "E1010-N6290", "E1010-N6291", "E1011-N6291" ], "elevation_blocks": [ "21LHD8RP@2025-03-06", "22LHD6RQ@2025-03-13" ], "ign_dalles": [ "LHD_FXX_1010_6291_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_1010_6292_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_1011_6292_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD8RP", "22LHD6RQ" ], "ign_editions": [ "2025-03-06", "2025-03-13" ], "ign_dsm_edition": { "LHD_FXX_1010_6291_MNT_O_0M50_LAMB93_IGN69": "2025-03-13", "LHD_FXX_1010_6292_MNT_O_0M50_LAMB93_IGN69": "2025-03-06", "LHD_FXX_1011_6292_MNT_O_0M50_LAMB93_IGN69": "2025-03-06" }, "climb_origin": "discovered", "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked", "carriageway": { "stations": 59, "stations_resolved": 59, "width_median_m": 4.25, "width_p10_m": 3.0, "width_min_m": 1.0, "width_max_m": 10.75, "bounded_share": 0.593, "unbounded_share": 0.407, "confidence_median": 0.62, "width_median_bounded_m": 4.0, "window_m": [ 9.0, 34.0 ], "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": 59, "stations_resolved": 59, "width_median_m": 2.75, "width_p10_m": 1.0, "width_min_m": 0.5, "width_max_m": 9.25, "bounded_share": 0.898, "unbounded_share": 0.102, "confidence_median": 1.0, "width_median_bounded_m": 2.5, "window_m": [ 9.0, 34.0 ], "width_at_max25_m": 7.5, "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": "Sp\u00e9rac\u00e8des", "county": "Alpes-Maritimes", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }