{ "ocl_version": "0.1.0", "name": "Chemin du Peyrat", "slug": "chemin-du-peyrat", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 35.79419534159527, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 40.0, "end_distance_m": 42.0, "start_elevation_m": 73.80885567587454, "end_elevation_m": 74.52473958270645, "min_gradient_pct": 2.8079562069557085 }, { "window_m": 3.0, "max_gradient_pct": 29.352034665136273, "diagnostic": true, "flags": [], "start_distance_m": 17.0, "end_distance_m": 20.0, "start_elevation_m": 69.99896849101498, "end_elevation_m": 70.87952953096907, "min_gradient_pct": 5.170632404416627 }, { "window_m": 5.0, "max_gradient_pct": 26.396459292070347, "diagnostic": false, "flags": [], "start_distance_m": 15.0, "end_distance_m": 20.0, "start_elevation_m": 69.55970656636555, "end_elevation_m": 70.87952953096907, "min_gradient_pct": 7.203172279530179 }, { "window_m": 10.0, "max_gradient_pct": 23.222935583764723, "diagnostic": false, "flags": [], "start_distance_m": 10.0, "end_distance_m": 20.0, "start_elevation_m": 68.5572359725926, "end_elevation_m": 70.87952953096907, "min_gradient_pct": 7.610608983606966 }, { "window_m": 20.0, "max_gradient_pct": 20.28594697335606, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 99.0, "end_distance_m": 119.0, "start_elevation_m": 83.875156341619, "end_elevation_m": 87.93234573629022, "min_gradient_pct": 8.344983922127795 }, { "window_m": 25.0, "max_gradient_pct": 20.119860117100984, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 99.0, "end_distance_m": 124.0, "start_elevation_m": 83.875156341619, "end_elevation_m": 88.90512137089425, "min_gradient_pct": 8.689295499550497 }, { "window_m": 50.0, "max_gradient_pct": 19.69029591255861, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 91.0, "end_distance_m": 141.0, "start_elevation_m": 82.33273519814713, "end_elevation_m": 92.17788315442644, "min_gradient_pct": 10.379072721208672 }, { "window_m": 100.0, "max_gradient_pct": 18.52216882626651, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 54.0, "end_distance_m": 154.0, "start_elevation_m": 75.96815930871696, "end_elevation_m": 94.49032813498347, "min_gradient_pct": 12.11012946769415 } ], "shape": { "ascent_concentration": 0.316, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 188.0, "shape_class": "sustained" }, "length_m": 259.42700296066243, "start_elevation_m": 67.44052629319643, "end_elevation_m": 107.43723420484625, "endpoint_gain_m": 39.99670791164982, "overall_gradient_pct": 15.41732643679911, "accumulated_ascent_m": 39.99670791164982, "window_maxima": { "max_5m": { "gradient_pct": 26.396459292070347, "start_distance_m": 15.0, "end_distance_m": 20.0, "midpoint_distance_m": 17.5, "start_elevation_m": 69.55970656636555, "end_elevation_m": 70.87952953096907, "start_xy": [ 531705.6687951521, 6332583.25529892 ], "end_xy": [ 531702.059268627, 6332579.795339634 ] }, "max_10m": { "gradient_pct": 23.222935583764723, "start_distance_m": 10.0, "end_distance_m": 20.0, "midpoint_distance_m": 15.0, "start_elevation_m": 68.5572359725926, "end_elevation_m": 70.87952953096907, "start_xy": [ 531709.0077836204, 6332586.944304909 ], "end_xy": [ 531702.059268627, 6332579.795339634 ] }, "max_20m": { "gradient_pct": 20.28594697335606, "start_distance_m": 99.0, "end_distance_m": 119.0, "midpoint_distance_m": 109.0, "start_elevation_m": 83.875156341619, "end_elevation_m": 87.93234573629022, "start_xy": [ 531664.8037626909, 6332523.449977031 ], "end_xy": [ 531661.9758735853, 6332503.650910306 ] }, "max_25m": { "gradient_pct": 20.119860117100984, "start_distance_m": 99.0, "end_distance_m": 124.0, "midpoint_distance_m": 111.5, "start_elevation_m": 83.875156341619, "end_elevation_m": 88.90512137089425, "start_xy": [ 531664.8037626909, 6332523.449977031 ], "end_xy": [ 531661.268901309, 6332498.701143624 ] }, "max_50m": { "gradient_pct": 19.69029591255861, "start_distance_m": 91.0, "end_distance_m": 141.0, "midpoint_distance_m": 116.0, "start_elevation_m": 82.33273519814713, "end_elevation_m": 92.17788315442644, "start_xy": [ 531666.5074333341, 6332531.259772074 ], "end_xy": [ 531658.2547854587, 6332481.9852420045 ] }, "max_100m": { "gradient_pct": 18.52216882626651, "start_distance_m": 54.0, "end_distance_m": 154.0, "midpoint_distance_m": 104.0, "start_elevation_m": 75.96815930871696, "end_elevation_m": 94.49032813498347, "start_xy": [ 531690.3198418764, 6332557.251451839 ], "end_xy": [ 531654.7075069482, 6332469.494881596 ] } }, "window_minima": { "min_5m": { "gradient_pct": 7.203172279530179, "start_distance_m": 190.0, "end_distance_m": 195.0, "midpoint_distance_m": 192.5, "start_elevation_m": 99.4271744265541, "end_elevation_m": 99.78733304053061, "start_xy": [ 531639.5760993687, 6332436.965973696 ], "end_xy": [ 531637.3855808694, 6332432.471351498 ] }, "min_10m": { "gradient_pct": 7.610608983606966, "start_distance_m": 187.0, "end_distance_m": 197.0, "midpoint_distance_m": 192.0, "start_elevation_m": 99.194546356572, "end_elevation_m": 99.9556072549327, "start_xy": [ 531640.9695255511, 6332439.621960846 ], "end_xy": [ 531636.5093734696, 6332430.673502618 ] }, "min_20m": { "gradient_pct": 8.344983922127795, "start_distance_m": 183.0, "end_distance_m": 203.0, "midpoint_distance_m": 193.0, "start_elevation_m": 98.82622475364298, "end_elevation_m": 100.49522153806853, "start_xy": [ 531642.8819597027, 6332443.135163888 ], "end_xy": [ 531633.9127501947, 6332425.265510567 ] }, "min_25m": { "gradient_pct": 8.689295499550497, "start_distance_m": 181.0, "end_distance_m": 206.0, "midpoint_distance_m": 193.5, "start_elevation_m": 98.62464316115745, "end_elevation_m": 100.79696703604507, "start_xy": [ 531643.8381767784, 6332444.891765409 ], "end_xy": [ 531632.7594218545, 6332422.496064099 ] }, "min_50m": { "gradient_pct": 10.379072721208672, "start_distance_m": 178.0, "end_distance_m": 228.0, "midpoint_distance_m": 203.0, "start_elevation_m": 98.24748543516316, "end_elevation_m": 103.43702179576749, "start_xy": [ 531645.2725023922, 6332447.526667691 ], "end_xy": [ 531624.3016806935, 6332402.18679 ] }, "min_100m": { "gradient_pct": 12.11012946769415, "start_distance_m": 159.0, "end_distance_m": 259.0, "midpoint_distance_m": 209.0, "start_elevation_m": 95.29959984340877, "end_elevation_m": 107.40972931110292, "start_xy": [ 531653.1176976786, 6332464.754364063 ], "end_xy": [ 531610.4450447818, 6332374.808705173 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 35.79419534159527, "start_distance_m": 40.0, "end_distance_m": 42.0, "midpoint_distance_m": 41.0, "start_elevation_m": 73.80885567587454, "end_elevation_m": 74.52473958270645, "start_xy": [ 531702.5032881299, 6332563.815431022 ], "end_xy": [ 531701.2004035548, 6332562.3124179095 ] }, "max_3m": { "gradient_pct": 29.352034665136273, "start_distance_m": 17.0, "end_distance_m": 20.0, "midpoint_distance_m": 18.5, "start_elevation_m": 69.99896849101498, "end_elevation_m": 70.87952953096907, "start_xy": [ 531704.224984542, 6332581.8713152055 ], "end_xy": [ 531702.059268627, 6332579.795339634 ] } }, "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": 0.123, "obstruction_max_height_m": 19.45, "flagged_windows_m": [ 2, 20, 25, 50, 100 ] }, "review": [], "extent": [ "may_start_earlier", "may_continue_beyond_end" ] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "16bcc1553fe58b280e0c4a66a3ab0980530490a6", "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-so6", "road_pbf": "block-batch-fr-so6.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": "sha256:18f786cf9fa98070" }, "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_E531-N6332_0m5@21LHD2HP-2026-03-20.tif" ], "calculated_at": "2026-09-27T03:56:14+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-so6.osm.pbf", "osm_snapshot": "", "run_id": "fr-so6", "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": [ "E531-N6332" ], "elevation_blocks": [ "21LHD2HP@2026-03-20" ], "ign_dalles": [ "LHD_FXX_0531_6333_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD2HP" ], "ign_editions": [ "2026-03-20" ], "ign_dsm_edition": { "LHD_FXX_0531_6333_MNT_O_0M50_LAMB93_IGN69": "2026-03-20" }, "climb_origin": "discovered", "seam_filled_samples": { "count": 0, "distances_m": [] }, "seam_filled_in_maximum": false, "structure_own_ways": "none \u2014 the route carried no way list and no mapped way runs along it; own decks unmasked", "carriageway": { "stations": 17, "stations_resolved": 17, "width_median_m": 6.0, "width_p10_m": 4.35, "width_min_m": 2.5, "width_max_m": 9.5, "bounded_share": 0.235, "unbounded_share": 0.765, "confidence_median": 0.0, "width_median_bounded_m": 6.0, "window_m": [ 99.0, 124.0 ], "width_at_max25_m": 5.75, "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": 17, "stations_resolved": 17, "width_median_m": 7.25, "width_p10_m": 0.95, "width_min_m": 0.5, "width_max_m": 10.5, "bounded_share": 0.765, "unbounded_share": 0.235, "confidence_median": 1.0, "width_median_bounded_m": 3.25, "window_m": [ 99.0, 124.0 ], "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": "Auvillar", "county": "Tarn-et-Garonne", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }