{ "ocl_version": "0.1.0", "name": "Chemin de Castelas", "slug": "chemin-de-castelas", "confidence": "B", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 23.10170614069591, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 768.0, "end_distance_m": 770.0, "start_elevation_m": 363.920638443679, "end_elevation_m": 364.38267256649294, "min_gradient_pct": -12.929428721847103 }, { "window_m": 3.0, "max_gradient_pct": 22.410323943392996, "diagnostic": true, "flags": [ "canopy_or_structure" ], "start_distance_m": 767.0, "end_distance_m": 770.0, "start_elevation_m": 363.71036284819115, "end_elevation_m": 364.38267256649294, "min_gradient_pct": -11.680886041510044 }, { "window_m": 5.0, "max_gradient_pct": 21.815073019529336, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 766.0, "end_distance_m": 771.0, "start_elevation_m": 363.48517339267323, "end_elevation_m": 364.5759270436497, "min_gradient_pct": -5.299882878266544 }, { "window_m": 10.0, "max_gradient_pct": 21.160764874897495, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 762.0, "end_distance_m": 772.0, "start_elevation_m": 362.6663204216898, "end_elevation_m": 364.78239690917957, "min_gradient_pct": -0.6772747700875925 }, { "window_m": 20.0, "max_gradient_pct": 20.693858413795, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 761.0, "end_distance_m": 781.0, "start_elevation_m": 362.46517071097236, "end_elevation_m": 366.60394239373136, "min_gradient_pct": -0.17678485189378534 }, { "window_m": 25.0, "max_gradient_pct": 20.46866112296584, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 745.0, "end_distance_m": 770.0, "start_elevation_m": 359.2655072857515, "end_elevation_m": 364.38267256649294, "min_gradient_pct": -0.00660789030939668 }, { "window_m": 50.0, "max_gradient_pct": 20.104880351781503, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 735.0, "end_distance_m": 785.0, "start_elevation_m": 357.2735021498718, "end_elevation_m": 367.3259423257625, "min_gradient_pct": 0.620398635630977 }, { "window_m": 100.0, "max_gradient_pct": 17.853180727865265, "diagnostic": false, "flags": [ "canopy_or_structure" ], "start_distance_m": 689.0, "end_distance_m": 789.0, "start_elevation_m": 350.1715650765938, "end_elevation_m": 368.0247458044591, "min_gradient_pct": 2.0877537329263305 } ], "shape": { "ascent_concentration": 0.588, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 182.0, "shape_class": "stepped" }, "length_m": 917.999999999966, "start_elevation_m": 318.7306439465336, "end_elevation_m": 376.04256311704944, "endpoint_gain_m": 57.311919170515864, "overall_gradient_pct": 6.243128449947493, "accumulated_ascent_m": 58.024840130979555, "window_maxima": { "max_5m": { "gradient_pct": 21.815073019529336, "start_distance_m": 766.0, "end_distance_m": 771.0, "midpoint_distance_m": 768.5, "start_elevation_m": 363.48517339267323, "end_elevation_m": 364.5759270436497, "start_xy": [ 904801.3292396681, 6299390.2650214955 ], "end_xy": [ 904798.7962765595, 6299394.572235769 ] }, "max_10m": { "gradient_pct": 21.160764874897495, "start_distance_m": 762.0, "end_distance_m": 772.0, "midpoint_distance_m": 767.0, "start_elevation_m": 362.6663204216898, "end_elevation_m": 364.78239690917957, "start_xy": [ 904803.3910571161, 6299386.8373533655 ], "end_xy": [ 904798.4042554193, 6299395.492191978 ] }, "max_20m": { "gradient_pct": 20.693858413795, "start_distance_m": 761.0, "end_distance_m": 781.0, "midpoint_distance_m": 771.0, "start_elevation_m": 362.46517071097236, "end_elevation_m": 366.60394239373136, "start_xy": [ 904803.9065114781, 6299385.9804363325 ], "end_xy": [ 904794.9582915915, 6299403.794052475 ] }, "max_25m": { "gradient_pct": 20.46866112296584, "start_distance_m": 745.0, "end_distance_m": 770.0, "midpoint_distance_m": 757.5, "start_elevation_m": 359.2655072857515, "end_elevation_m": 364.38267256649294, "start_xy": [ 904811.3658137142, 6299371.863445525 ], "end_xy": [ 904799.26742222, 6299393.692689626 ] }, "max_50m": { "gradient_pct": 20.104880351781503, "start_distance_m": 735.0, "end_distance_m": 785.0, "midpoint_distance_m": 760.0, "start_elevation_m": 357.2735021498718, "end_elevation_m": 367.3259423257625, "start_xy": [ 904815.3578308837, 6299362.69481428 ], "end_xy": [ 904794.4563844752, 6299407.762438702 ] }, "max_100m": { "gradient_pct": 17.853180727865265, "start_distance_m": 689.0, "end_distance_m": 789.0, "midpoint_distance_m": 739.0, "start_elevation_m": 350.1715650765938, "end_elevation_m": 368.0247458044591, "start_xy": [ 904830.7966360607, 6299319.593864725 ], "end_xy": [ 904793.9961027425, 6299411.728521611 ] } }, "window_minima": { "min_5m": { "gradient_pct": -5.299882878266544, "start_distance_m": 612.0, "end_distance_m": 617.0, "midpoint_distance_m": 614.5, "start_elevation_m": 340.1674863331481, "end_elevation_m": 339.90249218923475, "start_xy": [ 904885.3317000647, 6299268.7791129425 ], "end_xy": [ 904883.9102895709, 6299273.572816334 ] }, "min_10m": { "gradient_pct": -0.6772747700875925, "start_distance_m": 897.0, "end_distance_m": 907.0, "midpoint_distance_m": 902.0, "start_elevation_m": 376.04127526037826, "end_elevation_m": 375.9735477833695, "start_xy": [ 904768.314668118, 6299512.498975286 ], "end_xy": [ 904763.5237986196, 6299521.276649776 ] }, "min_20m": { "gradient_pct": -0.17678485189378534, "start_distance_m": 892.0, "end_distance_m": 912.0, "midpoint_distance_m": 902.0, "start_elevation_m": 376.03887836462854, "end_elevation_m": 376.0035213942498, "start_xy": [ 904770.7101028672, 6299508.110138041 ], "end_xy": [ 904761.0689302874, 6299525.628542688 ] }, "min_25m": { "gradient_pct": -0.00660789030939668, "start_distance_m": 892.0, "end_distance_m": 917.0, "midpoint_distance_m": 904.5, "start_elevation_m": 376.03887836462854, "end_elevation_m": 376.0372263920512, "start_xy": [ 904770.7101028672, 6299508.110138041 ], "end_xy": [ 904758.1935497194, 6299529.719042241 ] }, "min_50m": { "gradient_pct": 0.620398635630977, "start_distance_m": 868.0, "end_distance_m": 918.0, "midpoint_distance_m": 893.0, "start_elevation_m": 375.73236379923395, "end_elevation_m": 376.04256311704944, "start_xy": [ 904780.6470768832, 6299486.3025850905 ], "end_xy": [ 904757.6184736058, 6299530.537142151 ] }, "min_100m": { "gradient_pct": 2.0877537329263305, "start_distance_m": 0.0, "end_distance_m": 100.0, "midpoint_distance_m": 50.0, "start_elevation_m": 318.7306439465336, "end_elevation_m": 320.8183976794599, "start_xy": [ 904949.733, 6298671.222 ], "end_xy": [ 904951.6596098474, 6298771.20343915 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 23.10170614069591, "start_distance_m": 768.0, "end_distance_m": 770.0, "midpoint_distance_m": 769.0, "start_elevation_m": 363.920638443679, "end_elevation_m": 364.38267256649294, "start_xy": [ 904800.298330944, 6299391.9788555605 ], "end_xy": [ 904799.26742222, 6299393.692689626 ] }, "max_3m": { "gradient_pct": 22.410323943392996, "start_distance_m": 767.0, "end_distance_m": 770.0, "midpoint_distance_m": 768.5, "start_elevation_m": 363.71036284819115, "end_elevation_m": 364.38267256649294, "start_xy": [ 904800.8137853061, 6299391.1219385285 ], "end_xy": [ 904799.26742222, 6299393.692689626 ] } }, "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": 0.135, "obstruction_max_height_m": 11.16, "flagged_windows_m": [ 2, 3, 5, 10, 20, 25, 50, 100 ] }, "review": [], "extent": [] }, "provenance": { "analysis_version": "0.1.0", "run_manifest": { "manifest_version": "1", "code_git_sha": "41205ec4649bb0a4093af76ff34281a5d9a13832", "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-pr3", "road_pbf": "block-batch-fr-pr3.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:ba95a0bf562c86eb" }, "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_E904-N6298_0m5@21LHD7PP-2025-04-02.tif", "data/cache/fr/ign-lidarhd_dtm_E904-N6299_0m5@21LHD7PP-2025-04-02.tif" ], "calculated_at": "2026-09-25T09:26:45+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-pr3.osm.pbf", "osm_snapshot": "", "run_id": "fr-pr3", "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": [ "E904-N6298", "E904-N6299" ], "elevation_blocks": [ "21LHD7PP@2025-04-02" ], "ign_dalles": [ "LHD_FXX_0904_6299_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0904_6300_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD7PP" ], "ign_editions": [ "2025-04-02" ], "ign_dsm_edition": { "LHD_FXX_0904_6299_MNT_O_0M50_LAMB93_IGN69": "2025-04-02", "LHD_FXX_0904_6300_MNT_O_0M50_LAMB93_IGN69": "2025-04-02" }, "route_summit_trim_m": 245.2, "route_summit_trim_loss_m": 10.3, "climb_origin": "discovered", "structure_own_ways": 4, "carriageway": { "stations": 42, "stations_resolved": 42, "width_median_m": 7.25, "width_p10_m": 3.75, "width_min_m": 2.75, "width_max_m": 12.0, "bounded_share": 0.286, "unbounded_share": 0.714, "confidence_median": 0.0, "width_median_bounded_m": 6.62, "window_m": [ 745.0, 770.0 ], "width_at_max25_m": 6.38, "window_stations": 6, "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": 42, "stations_resolved": 42, "width_median_m": 9.62, "width_p10_m": 1.05, "width_min_m": 1.0, "width_max_m": 12.0, "bounded_share": 0.452, "unbounded_share": 0.548, "confidence_median": 0.0, "width_median_bounded_m": 1.75, "window_m": [ 745.0, 770.0 ], "width_at_max25_m": 3.25, "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": "Saint-Martin-de-la-Brasque", "county": "Vaucluse", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }