{ "ocl_version": "0.1.0", "name": "Impasse du Mas de Cabris", "slug": "impasse-du-mas-de-cabris", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 36.890001714380105, "diagnostic": true, "flags": [ "structure_excluded", "texture_excluded", "canopy_or_structure" ], "start_distance_m": 1254.0, "end_distance_m": 1256.0, "start_elevation_m": 306.95614931937916, "end_elevation_m": 307.69394935366677, "min_gradient_pct": -88.70299180752, "suppressed_max_gradient_pct": 91.78494692179981, "suppressed_location_m": [ 576.0, 578.0 ] }, { "window_m": 3.0, "max_gradient_pct": 32.58428351103172, "diagnostic": true, "flags": [ "structure_excluded", "texture_excluded" ], "start_distance_m": 2334.0, "end_distance_m": 2337.0, "start_elevation_m": 469.63630614342617, "end_elevation_m": 470.6138346487571, "min_gradient_pct": -56.931229331043674, "suppressed_max_gradient_pct": 61.10831606402485, "suppressed_location_m": [ 576.0, 579.0 ] }, { "window_m": 5.0, "max_gradient_pct": 30.81016180230108, "diagnostic": false, "flags": [ "texture_excluded", "canopy_or_structure" ], "start_distance_m": 1277.0, "end_distance_m": 1282.0, "start_elevation_m": 312.7546308898168, "end_elevation_m": 314.29513897993183, "min_gradient_pct": -30.985707836352958, "suppressed_max_gradient_pct": 35.893631704154814, "suppressed_location_m": [ 2512.0, 2517.0 ] }, { "window_m": 10.0, "max_gradient_pct": 28.944178216555656, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1274.0, "end_distance_m": 1284.0, "start_elevation_m": 311.9614477721064, "end_elevation_m": 314.85586559376196, "min_gradient_pct": -9.926834557931556 }, { "window_m": 20.0, "max_gradient_pct": 26.787730701075247, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1265.0, "end_distance_m": 1285.0, "start_elevation_m": 309.7558356217227, "end_elevation_m": 315.1133817619378, "min_gradient_pct": -8.6436474925668 }, { "window_m": 25.0, "max_gradient_pct": 26.17398554833244, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1263.0, "end_distance_m": 1288.0, "start_elevation_m": 309.27059511576704, "end_elevation_m": 315.81409150285015, "min_gradient_pct": -8.444620884581013 }, { "window_m": 50.0, "max_gradient_pct": 25.37025343192306, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1237.0, "end_distance_m": 1287.0, "start_elevation_m": 302.9030320617613, "end_elevation_m": 315.5881587777228, "min_gradient_pct": -6.798902414683198 }, { "window_m": 100.0, "max_gradient_pct": 23.82060316487423, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 1239.0, "end_distance_m": 1339.0, "start_elevation_m": 303.3695606576034, "end_elevation_m": 327.19016382247764, "min_gradient_pct": -4.344531913313432 } ], "shape": { "ascent_concentration": 0.379, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 567.0, "shape_class": "sustained" }, "length_m": 2580.611714197628, "start_elevation_m": 228.3553182422358, "end_elevation_m": 510.27760995360666, "endpoint_gain_m": 281.92229171137086, "overall_gradient_pct": 10.924630395201746, "accumulated_ascent_m": 290.11327053249886, "window_maxima": { "max_5m": { "gradient_pct": 30.81016180230108, "start_distance_m": 1277.0, "end_distance_m": 1282.0, "midpoint_distance_m": 1279.5, "start_elevation_m": 312.7546308898168, "end_elevation_m": 314.29513897993183, "start_xy": [ 1012448.4267226545, 6290958.033855948 ], "end_xy": [ 1012449.7576064031, 6290962.853477141 ] }, "max_10m": { "gradient_pct": 28.944178216555656, "start_distance_m": 1274.0, "end_distance_m": 1284.0, "midpoint_distance_m": 1279.0, "start_elevation_m": 311.9614477721064, "end_elevation_m": 314.85586559376196, "start_xy": [ 1012447.6281924053, 6290955.142083231 ], "end_xy": [ 1012450.5958384593, 6290964.666799161 ] }, "max_20m": { "gradient_pct": 26.787730701075247, "start_distance_m": 1265.0, "end_distance_m": 1285.0, "midpoint_distance_m": 1275.0, "start_elevation_m": 309.7558356217227, "end_elevation_m": 315.1133817619378, "start_xy": [ 1012445.4452226319, 6290946.4188329885 ], "end_xy": [ 1012451.0281875011, 6290965.568505491 ] }, "max_25m": { "gradient_pct": 26.17398554833244, "start_distance_m": 1263.0, "end_distance_m": 1288.0, "midpoint_distance_m": 1275.5, "start_elevation_m": 309.27059511576704, "end_elevation_m": 315.81409150285015, "start_xy": [ 1012445.0989142146, 6290944.4490435375 ], "end_xy": [ 1012452.3252346265, 6290968.273624482 ] }, "max_50m": { "gradient_pct": 25.37025343192306, "start_distance_m": 1237.0, "end_distance_m": 1287.0, "midpoint_distance_m": 1262.0, "start_elevation_m": 302.9030320617613, "end_elevation_m": 315.5881587777228, "start_xy": [ 1012441.5876864832, 6290918.71139487 ], "end_xy": [ 1012451.8928855847, 6290967.371918151 ] }, "max_100m": { "gradient_pct": 23.82060316487423, "start_distance_m": 1239.0, "end_distance_m": 1339.0, "midpoint_distance_m": 1289.0, "start_elevation_m": 303.3695606576034, "end_elevation_m": 327.19016382247764, "start_xy": [ 1012441.7627874457, 6290920.703715038 ], "end_xy": [ 1012454.5640145498, 6291012.267851762 ] } }, "window_minima": { "min_5m": { "gradient_pct": -30.985707836352958, "start_distance_m": 571.0, "end_distance_m": 576.0, "midpoint_distance_m": 573.5, "start_elevation_m": 273.90078632496846, "end_elevation_m": 272.3515009331508, "start_xy": [ 1013015.2033824847, 6291073.37102609 ], "end_xy": [ 1013019.6327071277, 6291075.690742281 ] }, "min_10m": { "gradient_pct": -9.926834557931556, "start_distance_m": 566.0, "end_distance_m": 576.0, "midpoint_distance_m": 571.0, "start_elevation_m": 273.344184388944, "end_elevation_m": 272.3515009331508, "start_xy": [ 1013010.7740578419, 6291071.0513098985 ], "end_xy": [ 1013019.6327071277, 6291075.690742281 ] }, "min_20m": { "gradient_pct": -8.6436474925668, "start_distance_m": 196.0, "end_distance_m": 216.0, "midpoint_distance_m": 206.0, "start_elevation_m": 249.00784323972115, "end_elevation_m": 247.2791137412078, "start_xy": [ 1013097.0594632728, 6290990.216688386 ], "end_xy": [ 1013078.027155531, 6290984.4012042405 ] }, "min_25m": { "gradient_pct": -8.444620884581013, "start_distance_m": 194.0, "end_distance_m": 219.0, "midpoint_distance_m": 206.5, "start_elevation_m": 249.1599850061171, "end_elevation_m": 247.04882978497184, "start_xy": [ 1013099.044098512, 6290990.464121139 ], "end_xy": [ 1013075.2131087364, 6290983.361425111 ] }, "min_50m": { "gradient_pct": -6.798902414683198, "start_distance_m": 188.0, "end_distance_m": 238.0, "midpoint_distance_m": 213.0, "start_elevation_m": 249.4942038372431, "end_elevation_m": 246.0947526299015, "start_xy": [ 1013104.99800423, 6290991.206419396 ], "end_xy": [ 1013056.5150560626, 6290980.949950173 ] }, "min_100m": { "gradient_pct": -4.344531913313432, "start_distance_m": 174.0, "end_distance_m": 274.0, "midpoint_distance_m": 224.0, "start_elevation_m": 249.7996860794357, "end_elevation_m": 245.45515416612227, "start_xy": [ 1013118.890450905, 6290992.938448663 ], "end_xy": [ 1013022.1434743849, 6290975.19429015 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 36.890001714380105, "start_distance_m": 1254.0, "end_distance_m": 1256.0, "midpoint_distance_m": 1255.0, "start_elevation_m": 306.95614931937916, "end_elevation_m": 307.69394935366677, "start_xy": [ 1012443.5405263373, 6290935.584991009 ], "end_xy": [ 1012443.8868347545, 6290937.55478046 ] }, "max_3m": { "gradient_pct": 32.58428351103172, "start_distance_m": 2334.0, "end_distance_m": 2337.0, "midpoint_distance_m": 2335.5, "start_elevation_m": 469.63630614342617, "end_elevation_m": 470.6138346487571, "start_xy": [ 1012374.3807178083, 6291554.270889885 ], "end_xy": [ 1012374.5912861265, 6291557.250434635 ] } }, "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": 0.003, "windows_resited": [ 2.0, 3.0 ], "windows_unresolved": [] }, "texture_suppression": { "masked_fraction": 0.007, "windows_resited": [ 2.0, 3.0, 5.0 ], "windows_unresolved": [] }, "texture_windows": { "rounds": 1, "windows_masked": [ { "window_m": 5.0, "start_m": 2512.0, "end_m": 2517.0, "raw_pct": 35.89, "reason": "short-step" } ], "advisory": [], "unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.216, "obstruction_max_height_m": 20.7, "flagged_windows_m": [ 2, 5, 10, 20, 25, 50, 100 ] }, "excluded_ranges_m": [ [ 573.0, 579.0 ], [ 2510.0, 2519.0 ] ], "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_E1012-N6290_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E1012-N6291_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E1013-N6290_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E1013-N6291_0m5.tif" ], "calculated_at": "2026-09-17T02:08:58+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": [ "E1012-N6290", "E1012-N6291", "E1013-N6290", "E1013-N6291" ], "elevation_blocks": [ "22LHD6RQ@2025-03-13" ], "ign_dalles": [ "LHD_FXX_1012_6291_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_1012_6292_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_1013_6291_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_1013_6292_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "22LHD6RQ" ], "ign_editions": [ "2025-03-13" ], "ign_dsm_edition": { "LHD_FXX_1012_6291_MNT_O_0M50_LAMB93_IGN69": "2025-03-13", "LHD_FXX_1012_6292_MNT_O_0M50_LAMB93_IGN69": "2025-03-13", "LHD_FXX_1013_6291_MNT_O_0M50_LAMB93_IGN69": "2025-03-13", "LHD_FXX_1013_6292_MNT_O_0M50_LAMB93_IGN69": "2025-03-13" }, "climb_origin": "discovered", "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked", "carriageway": { "stations": 110, "stations_resolved": 110, "width_median_m": 5.5, "width_p10_m": 3.0, "width_min_m": 0.5, "width_max_m": 11.25, "bounded_share": 0.536, "unbounded_share": 0.464, "confidence_median": 0.528, "width_median_bounded_m": 5.25, "window_m": [ 1263.0, 1288.0 ], "width_at_max25_m": 5.25, "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": 110, "stations_resolved": 110, "width_median_m": 3.5, "width_p10_m": 0.75, "width_min_m": 0.0, "width_max_m": 9.25, "bounded_share": 0.982, "unbounded_share": 0.018, "confidence_median": 1.0, "width_median_bounded_m": 3.38, "window_m": [ 1263.0, 1288.0 ], "width_at_max25_m": 2.25, "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": "Peymeinade", "county": "Alpes-Maritimes", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }