{ "ocl_version": "0.1.0", "name": "Chemin de la Roche", "slug": "chemin-de-la-roche-2-2", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 45.19378502997142, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 540.0, "end_distance_m": 542.0, "start_elevation_m": 646.5461682153789, "end_elevation_m": 647.4500439159783, "min_gradient_pct": -4.481640353350258 }, { "window_m": 3.0, "max_gradient_pct": 37.852102952698864, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 539.0, "end_distance_m": 542.0, "start_elevation_m": 646.3144808273973, "end_elevation_m": 647.4500439159783, "min_gradient_pct": -2.5888850349664003 }, { "window_m": 5.0, "max_gradient_pct": 29.99599837199412, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 644.0, "end_distance_m": 649.0, "start_elevation_m": 660.7040182019656, "end_elevation_m": 662.2038181205653, "min_gradient_pct": -1.741559790955307 }, { "window_m": 10.0, "max_gradient_pct": 28.171847372166212, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 639.0, "end_distance_m": 649.0, "start_elevation_m": 659.3866333833487, "end_elevation_m": 662.2038181205653, "min_gradient_pct": -1.1405020236099972 }, { "window_m": 20.0, "max_gradient_pct": 22.82293455994136, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 632.0, "end_distance_m": 652.0, "start_elevation_m": 658.0348615567701, "end_elevation_m": 662.5994484687584, "min_gradient_pct": 0.49976400293644474 }, { "window_m": 25.0, "max_gradient_pct": 20.785245377486262, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 633.0, "end_distance_m": 658.0, "start_elevation_m": 658.2982534207791, "end_elevation_m": 663.4945647651507, "min_gradient_pct": 1.0456435786722977 }, { "window_m": 50.0, "max_gradient_pct": 19.733394689943225, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 97.0, "end_distance_m": 147.0, "start_elevation_m": 582.7091958842533, "end_elevation_m": 592.5758932292249, "min_gradient_pct": 4.999127718262571 }, { "window_m": 100.0, "max_gradient_pct": 17.889645172923906, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 310.0, "end_distance_m": 410.0, "start_elevation_m": 609.8305293976749, "end_elevation_m": 627.7201745705988, "min_gradient_pct": 8.212790055194546 } ], "shape": { "ascent_concentration": 0.301, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 163.0, "shape_class": "sustained" }, "length_m": 1116.1984708690838, "start_elevation_m": 570.2265292353694, "end_elevation_m": 715.7365243359392, "endpoint_gain_m": 145.50999510056977, "overall_gradient_pct": 13.03621165035947, "accumulated_ascent_m": 145.9665067817947, "window_maxima": { "max_5m": { "gradient_pct": 29.99599837199412, "start_distance_m": 644.0, "end_distance_m": 649.0, "midpoint_distance_m": 646.5, "start_elevation_m": 660.7040182019656, "end_elevation_m": 662.2038181205653, "start_xy": [ 797632.9994768043, 6473168.755166125 ], "end_xy": [ 797635.0681159016, 6473173.307169232 ] }, "max_10m": { "gradient_pct": 28.171847372166212, "start_distance_m": 639.0, "end_distance_m": 649.0, "midpoint_distance_m": 644.0, "start_elevation_m": 659.3866333833487, "end_elevation_m": 662.2038181205653, "start_xy": [ 797630.930837707, 6473164.203163018 ], "end_xy": [ 797635.0681159016, 6473173.307169232 ] }, "max_20m": { "gradient_pct": 22.82293455994136, "start_distance_m": 632.0, "end_distance_m": 652.0, "midpoint_distance_m": 642.0, "start_elevation_m": 658.0348615567701, "end_elevation_m": 662.5994484687584, "start_xy": [ 797628.0347429708, 6473157.830358668 ], "end_xy": [ 797636.3092993599, 6473176.038371096 ] }, "max_25m": { "gradient_pct": 20.785245377486262, "start_distance_m": 633.0, "end_distance_m": 658.0, "midpoint_distance_m": 645.5, "start_elevation_m": 658.2982534207791, "end_elevation_m": 663.4945647651507, "start_xy": [ 797628.4484707903, 6473158.74075929 ], "end_xy": [ 797638.7916662766, 6473181.500774824 ] }, "max_50m": { "gradient_pct": 19.733394689943225, "start_distance_m": 97.0, "end_distance_m": 147.0, "midpoint_distance_m": 122.0, "start_elevation_m": 582.7091958842533, "end_elevation_m": 592.5758932292249, "start_xy": [ 797321.9948969422, 6473117.558293654 ], "end_xy": [ 797327.2128543714, 6473069.116465759 ] }, "max_100m": { "gradient_pct": 17.889645172923906, "start_distance_m": 310.0, "end_distance_m": 410.0, "midpoint_distance_m": 360.0, "start_elevation_m": 609.8305293976749, "end_elevation_m": 627.7201745705988, "start_xy": [ 797461.5551137408, 6473032.007753199 ], "end_xy": [ 797522.651155753, 6473077.051015387 ] } }, "window_minima": { "min_5m": { "gradient_pct": -1.741559790955307, "start_distance_m": 1110.0, "end_distance_m": 1115.0, "midpoint_distance_m": 1112.5, "start_elevation_m": 715.8438004793832, "end_elevation_m": 715.7567224898354, "start_xy": [ 797829.7126650728, 6473572.716986509 ], "end_xy": [ 797832.3797219945, 6473576.94626628 ] }, "min_10m": { "gradient_pct": -1.1405020236099972, "start_distance_m": 1106.0, "end_distance_m": 1116.0, "midpoint_distance_m": 1111.0, "start_elevation_m": 715.8539471355422, "end_elevation_m": 715.7398969331812, "start_xy": [ 797827.5790195352, 6473569.333562693 ], "end_xy": [ 797832.913133379, 6473577.792122234 ] }, "min_20m": { "gradient_pct": 0.49976400293644474, "start_distance_m": 1096.0, "end_distance_m": 1116.0, "midpoint_distance_m": 1106.0, "start_elevation_m": 715.6399441325939, "end_elevation_m": 715.7398969331812, "start_xy": [ 797822.2449056916, 6473560.8750031525 ], "end_xy": [ 797832.913133379, 6473577.792122234 ] }, "min_25m": { "gradient_pct": 1.0456435786722977, "start_distance_m": 1091.0, "end_distance_m": 1116.0, "midpoint_distance_m": 1103.5, "start_elevation_m": 715.4784860385131, "end_elevation_m": 715.7398969331812, "start_xy": [ 797819.5778487697, 6473556.645723382 ], "end_xy": [ 797832.913133379, 6473577.792122234 ] }, "min_50m": { "gradient_pct": 4.999127718262571, "start_distance_m": 1066.0, "end_distance_m": 1116.0, "midpoint_distance_m": 1091.0, "start_elevation_m": 713.2403330740499, "end_elevation_m": 715.7398969331812, "start_xy": [ 797807.8860391335, 6473534.586871456 ], "end_xy": [ 797832.913133379, 6473577.792122234 ] }, "min_100m": { "gradient_pct": 8.212790055194546, "start_distance_m": 1016.0, "end_distance_m": 1116.0, "midpoint_distance_m": 1066.0, "start_elevation_m": 707.5271068779866, "end_elevation_m": 715.7398969331812, "start_xy": [ 797786.7993347401, 6473492.052045706 ], "end_xy": [ 797832.913133379, 6473577.792122234 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 45.19378502997142, "start_distance_m": 540.0, "end_distance_m": 542.0, "midpoint_distance_m": 541.0, "start_elevation_m": 646.5461682153789, "end_elevation_m": 647.4500439159783, "start_xy": [ 797583.143165056, 6473188.988537737 ], "end_xy": [ 797585.0757527605, 6473188.829127677 ] }, "max_3m": { "gradient_pct": 37.852102952698864, "start_distance_m": 539.0, "end_distance_m": 542.0, "midpoint_distance_m": 540.5, "start_elevation_m": 646.3144808273973, "end_elevation_m": 647.4500439159783, "start_xy": [ 797582.1431995232, 6473188.980235133 ], "end_xy": [ 797585.0757527605, 6473188.829127677 ] } }, "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": 0.019, "windows_resited": [], "windows_unresolved": [], "minima_resited": [], "minima_unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.324, "obstruction_max_height_m": 20.28, "flagged_windows_m": [ 2, 3, 5, 10, 20, 25, 50, 100 ] }, "excluded_ranges_m": [ [ 0.0, 20.0 ] ], "review": [], "extent": [ "may_start_earlier" ] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "076a8e7f889cfb3c2cf6b3de65a6030c7155b1f0", "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-mc7", "road_pbf": "block-batch-fr-mc7.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:af4eae1f5df9e232" }, "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_E797-N6472_0m5@22LHD5NM-2025-02-27.tif", "data/cache/fr/ign-lidarhd_dtm_E797-N6473_0m5@22LHD5NM-2025-02-27.tif" ], "calculated_at": "2026-09-22T15:16:56+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-mc7.osm.pbf", "osm_snapshot": "", "run_id": "fr-mc7", "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": [ "E797-N6472", "E797-N6473" ], "elevation_blocks": [ "22LHD5NM@2025-02-27" ], "ign_dalles": [ "LHD_FXX_0797_6473_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0797_6474_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "22LHD5NM" ], "ign_editions": [ "2025-02-27" ], "ign_dsm_edition": { "LHD_FXX_0797_6473_MNT_O_0M50_LAMB93_IGN69": "2025-02-27", "LHD_FXX_0797_6474_MNT_O_0M50_LAMB93_IGN69": "2025-02-27" }, "climb_origin": "discovered", "structure_own_ways": 2, "structure_mask_ranges_m": [ [ 0.0, 15.0 ] ], "carriageway": { "stations": 51, "stations_resolved": 51, "width_median_m": 3.5, "width_p10_m": 2.0, "width_min_m": 1.0, "width_max_m": 12.0, "bounded_share": 0.333, "unbounded_share": 0.667, "confidence_median": 0.0, "width_median_bounded_m": 2.5, "window_m": [ 633.0, 658.0 ], "width_at_max25_m": 2.5, "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": 51, "stations_resolved": 51, "width_median_m": 3.5, "width_p10_m": 1.0, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.765, "unbounded_share": 0.235, "confidence_median": 1.0, "width_median_bounded_m": 2.75, "window_m": [ 633.0, 658.0 ], "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": "Saint-Ferr\u00e9ol-d'Auroure", "county": "Haute-Loire", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }