{ "version": 2, "generated": "2026-09-26T08:18:27+00:00", "generator": "scripts/yosemite_data.py", "provisional": false, "crs": { "epsg": 26911, "name": "NAD83 / UTM zone 11N", "verticalDatum": "NAVD88 (metres)" }, "origin": { "E": 270870, "N": 4179040, "lat": 37.7299885, "lon": -119.6000294, "requested": { "lat": 37.73, "lon": -119.6 }, "note": "UTM of (37.7300 N, -119.6000 W) rounded to 10 m" }, "localFrame": { "x": "E - E0 (east +)", "z": "-(N - N0) (north is -z)", "y": "elevation, m NAVD88", "units": "metres" }, "rasterConvention": "row 0 = north edge (minZ), column 0 = west edge (minX); pixel centres at x = minX + (i + 0.5)\u00b7cell, z = minZ + (j + 0.5)\u00b7cell", "gridConvergenceDeg": 1.592, "headingConvention": "azimuth clockwise from TRUE north (headingTrueDeg) and from GRID north = local -z (headingGridDeg); grid = true + gridConvergenceDeg. The valley is 2.6\u00b0 west of the zone-11 central meridian so the convergence is \u2248 -1.59\u00b0 (grid north lies 1.59\u00b0 west of true north), not -0.4\u00b0.", "demEncoding": { "format": "gzip of little-endian uint16, row-major [height][width]", "encode": "v = round((elev_m - 900) * 16), clamped 0..65535", "decode": "elev_m = v / 16 + 900", "precisionM": 0.0625, "rangeM": [ 900, 4995.9375 ] }, "files": [ { "name": "dem-main.p16.gz", "kind": "dem", "bytes": 2848795, "width": 2428, "height": 1680, "cellSizeM": 10, "bounds": { "minX": -11280, "maxX": 13000, "minZ": -8120, "maxZ": 8680 }, "encoding": "gzip(low byte plane \u2016 high byte plane) of zig-zag residuals of the predictor left + up \u2212 up-left over uint16 [height][width]; elev_m = v/16 + 900", "source": "USGS 3DEP best-available, requested at 5 m (bilinear) then 2\u00d72 box-averaged; 1 m lidar (CA_YosemiteNP_2019, CA_SouthernSierra_2020) where published, 1/3 arc-second elsewhere", "minElevM": 895.25, "maxElevM": 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111.87, "corrRock": 0.44, "corrAll": 0.248, "peakProminence": 0.155 }, { "objectId": 20914, "tile": "m_3711920_sw_11_060_20220806", "date": "2022-08-06", "timeUTC": "18:42", "timePDT": "11:42", "azimuthTrueDeg": 133.89, "elevationDeg": 62.14, "azimuthGridDeg": 135.49, "corrRock": 0.305, "corrAll": 0.294, "peakProminence": 0.329 }, { "objectId": 20916, "tile": "m_3711921_nw_11_060_20220820", "date": "2022-08-20", "timeUTC": "20:24", "timePDT": "13:24", "azimuthTrueDeg": 192.51, "elevationDeg": 64.02, "azimuthGridDeg": 194.11, "corrRock": 0.291, "corrAll": 0.17, "peakProminence": 0.558 }, { "objectId": 20918, "tile": "m_3711921_sw_11_060_20220820", "date": "2022-08-20", "timeUTC": "19:22", "timePDT": "12:22", "azimuthTrueDeg": 158.2, "elevationDeg": 63.02, "azimuthGridDeg": 159.79, "corrRock": 0.351, "corrAll": 0.176, "peakProminence": 1.199 } ], "sunMethod": "per DOQQ: search the acquisition date's solar path 07:30\u201316:30 PDT (low-precision ephemeris) for the sun direction maximising the sum of two normalised correlations: rock luminance vs cast-shadow-aware Lambert shading, and class-normalised log luminance vs log(sky + sun\u00b7shading) on steep pixels; cast shadows ray-marched on a 20 m DEM", "delighting": "linear (IEC 61966-2-1) NAIP; per DOQQ \u00d7 class robust fits y = a + b\u00b7(V\u00b7cos\u03b8/sinh) in direct-sun bins plus the class's cast-shadow level; sunlit pixels divided per band, shadowed pixels brightened on luminance with class chroma (no amplified skylight blue); DOQQ overlaps re-mosaicked closest-centre (NAIP buffers carry neighbouring flight lines); per-DOQQ gains solved from sunlit forest/rock medians across all DOQQ boundaries; global tone albedo = k\u00b7L^p on luminance (chromaticity kept); remaining flight-line steps removed by seamHarmonisation", "tone": { "k": 2.671, "p": 1.4111, "targets": { "rock": 0.36, "forest": 0.085 }, "whiteBalanceRGB": [ 0.88, 1.0121, 1.5144 ], "granitTargetRatio": [ 1.04, 1.0, 0.88 ], "waterFactor": 0.534, "note": "albedo = wb \u00b7 k\u00b7L^p/L \u00b7 rgb (L = luminance); water class then scaled by waterFactor; a \u00b120 % 1 km-scale residual colour field smooths DOQQ seams" }, "seamHarmonisation": { "method": "regions = closest-centre DOQQ source map + hand-traced flight-line patches (inside DOQQ buffers); patches with a known donor flight are de-lit with that DOQQ's sun/fits/gains. Steps across every region boundary measured on the de-lit 4 m albedo per band in log space, class-stratified (forest/rock/meadow, normalised convolution \u03c3=80 m each side, sunlit pixels weight 1, shaded 0.35), smoothed along the boundary (\u03c3=250 m). One membrane field per band and per class field ['all', 'forest', 'rock'] on a 20 m grid: smooth inside regions, jumps by the measured step at boundaries (each side moves ~half), fades over ~2500 m; evaluated region-aware (sharp exactly at the source boundary) and blended by the pixel's forest/rock weight. Applied to ortho-main/core/near. Shadow-level patches: per-band quantile map of a patch's shadow pixels onto a neighbouring reference strip (raw NAIP).", "patches": [ { "id": "P1", "donor": [ 0, -600 ], "note": "Half Dome/Tenaya forest bench: the 3711912_se/_913_sw flight line continues ~340 m south into 3711920_ne / 3711921_nw", "poly": [ [ 8078, -2060 ], [ 9600, -2060 ], [ 9600, -1642 ], [ 8078, -1642 ] ] }, { "id": "P2", "donor": [ 0, 700 ], "note": "Little Yosemite rim: hazy 3711921_nw flight line reaching ~540 m north into 3711913_sw", "poly": [ [ 9600, -2250 ], [ 9920, -2542 ], [ 12280, -2542 ], [ 12280, -1900 ], [ 9600, -1900 ] ] }, { "id": "P3a", "donor": null, "note": "blue-cast sliver of another flight line east of the 3711920_nw | _ne cut (Ahwahnee \u2192 Curry)", "poly": [ [ 3290, -1800 ], [ 3410, -1800 ], [ 3410, -270 ], [ 3290, -270 ] ] }, { "id": "P3b", "donor": [ -450, 0 ], "note": "3711920_nw/_sw (Aug 6) imagery reaching 80\u2013350 m east of the cut into 3711920_ne/_se (Glacier Point \u2192 Illilouette)", "poly": [ [ 3150, -270 ], [ 3410, -270 ], [ 3410, 900 ], [ 3440, 1100 ], [ 3440, 8700 ], [ 3000, 8700 ], [ 3000, 2000 ], [ 3150, 1000 ] ] } ], "shadowPatches": [ { "id": "S1", "note": "Sentinel Rock cast shadow east of x\u2248180 (3711920_nw): red high, NIR low \u21d2 shadowed forest classified as rock", "poly": [ [ 180, -240 ], [ 470, -240 ], [ 470, 320 ], [ 180, 320 ] ], "ref": [ -110, 170, -240, 320 ] } ], "stats": { "regions": 17, "boundaryEdges": 6195, "medianAbsStepLog": [ 0.179, 0.139, 0.157 ], "p90AbsStepLog": [ 0.481, 0.403, 0.49 ], "fieldRangeLog": { "all": [ -0.537, 0.611 ], "forest": [ -0.561, 0.585 ], "rock": [ -0.612, 0.559 ] } } }, "referenceDoqqs": [ 20912, 20907, 20908 ], "classMeanLinearAlbedo": { "forest": { "meanLinearAlbedo": 0.0927, "meanLinearRGB": [ 0.0796, 0.0986, 0.0611 ], "p10": 0.0248, "p90": 0.1793, "pixels": 15945656 }, "meadow": { "meanLinearAlbedo": 0.2008, "meanLinearRGB": [ 0.1867, 0.2116, 0.1345 ], "p10": 0.1448, "p90": 0.2732, 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"66493399" }, { "x": 315.7, "z": 583.3, "y": 1787.8, "permanentId": "66493413" }, { "x": 10523.3, "z": -406.9, "y": 1900.8, "permanentId": "66493423" }, { "x": -9968.3, "z": 56.1, "y": 1272.0, "permanentId": "66493425" }, { "x": -4184.1, "z": -803.2, "y": 2151.4, "permanentId": "66493459" }, { "x": -10336.0, "z": 416.3, "y": 1278.3, "permanentId": "66493475" } ] } }, "features": [ { "name": "El Capitan", "source": "USGS GNIS", "gnisId": 259807, "gnisClass": "Summit", "lat": 37.742136, "lon": -119.635908, "x": -3124.4, "y": 2369.5, "z": -1436.6, "summit": { "x": -3302.5, "y": 2307.6, "z": -572.5, "lat": 37.734, "lon": -119.6378, "note": "summit of the El Capitan formation above the SW face (published coordinate; DEM 2307 m). The GNIS point lies ~0.9 km north on higher ground (2372 m)." } }, { "name": "Half Dome", "source": "USGS GNIS", "gnisId": 253497, "gnisClass": "Summit", "lat": 37.744407, "lon": -119.534066, "x": 5857.4, "y": 2681.7, "z": -1440.6, "summit": { "x": 5947.5, "y": 2694.4, "z": -1627.5, "note": "highest 5 m DEM cell within 200 m of the GNIS point" } }, { "name": "Clouds Rest", "source": "USGS GNIS", "gnisId": 254751, "gnisClass": "Summit", "lat": 37.76783, "lon": -119.489209, "x": 9879.5, "y": 3026.0, "z": -3933.8, "summit": { "x": 9877.5, "y": 3026.4, "z": -3937.5, "note": "highest 5 m DEM cell within 200 m of the GNIS point" } }, { "name": "Sentinel Dome", "source": "USGS GNIS", "gnisId": 253838, "gnisClass": "Summit", "lat": 37.722999, "lon": -119.584362, "x": 1359.5, "y": 2474.4, "z": 813.9, "summit": { "x": 1372.5, "y": 2475.9, "z": 802.5, "note": "highest 5 m DEM cell within 200 m of the GNIS point" } }, { "name": "Sentinel Rock", "source": "USGS GNIS", "gnisId": 253840, "gnisClass": "Pillar", "lat": 37.72882, "lon": -119.594344, "x": 497.5, "y": 2135.7, "z": 143.6, "summit": { "x": 482.5, "y": 2140.5, "z": 142.5, "note": "highest 5 m DEM cell within 120 m of the GNIS point" } }, { "name": "Glacier Point", "source": "USGS GNIS", "gnisId": 253478, "gnisClass": "Cliff", "lat": 37.730765, "lon": -119.573787, "x": 2315.4, "y": 2083.4, "z": -22.2, "summit": { "x": 2327.5, "y": 2202.1, "z": 7.5, "lat": 37.7306, "lon": -119.5738, "note": "Glacier Point overlook (published coordinate; DEM \u22482200 m). The GNIS point sits on the cliff face below (2083 m)." } }, { "name": "Cathedral Rocks", "source": "USGS GNIS", "gnisId": 258081, "gnisClass": "Cliff", "lat": 37.714654, "lon": -119.636845, "x": -3293.0, "y": 2008.9, "z": 1610.9, "summit": { "x": -3267.5, "y": 2026.1, "z": 1607.5, "note": "highest 5 m DEM cell within 120 m of the GNIS point" } }, { "name": "Cathedral Spires", "source": "USGS GNIS", "gnisId": 258082, "gnisClass": "Pillar", "lat": 37.713543, "lon": -119.632678, "x": -2929.1, "y": 1751.5, "z": 1744.6, "summit": { "x": -2922.5, "y": 1864.8, "z": 1712.5, "note": "highest 5 m DEM cell within 120 m of the GNIS point" } }, { "name": "Three Brothers", "source": "USGS GNIS", "gnisId": 1659995, "gnisClass": "Summit", "lat": 37.746038, "lon": -119.614823, "x": -1254.1, "y": 2367.8, "z": -1817.4, "summit": { "x": -1247.5, "y": 2370.2, "z": -1812.5, "note": "highest 5 m DEM cell within 200 m of the GNIS point" } }, { "name": "Eagle Peak", "source": "USGS GNIS", "gnisId": 1658452, "gnisClass": "Summit", "lat": 37.746064, "lon": -119.614781, "x": -1250.4, "y": 2365.9, "z": -1820.3, "summit": { "x": -1247.5, "y": 2370.2, "z": -1812.5, "note": "highest 5 m DEM cell within 200 m of the GNIS point" } }, { "name": "North Dome", "source": "USGS GNIS", "gnisId": 254979, "gnisClass": "Summit", "lat": 37.756869, "lon": -119.559993, "x": 3610.5, "y": 2296.4, "z": -2885.8, "summit": { "x": 3612.5, "y": 2297.9, "z": -2872.5, "note": "highest 5 m DEM cell within 200 m of the GNIS point" } }, { "name": "Washington Column", "source": "USGS GNIS", "gnisId": 255218, "gnisClass": "Pillar", "lat": 37.748541, "lon": -119.559899, "x": 3593.5, "y": 1795.9, "z": -1961.4, "summit": { "x": 3582.5, "y": 1808.2, "z": -1952.5, "note": "highest 5 m DEM cell within 120 m of the GNIS point" } }, { "name": "Royal Arches", "source": "USGS GNIS", "gnisId": 255057, "gnisClass": "Pillar", "lat": 37.746597, "lon": -119.566288, "x": 3024.6, "y": 1268.8, "z": -1761.0, "summit": { "x": 3052.5, "y": 1470.3, "z": -1882.5, "note": "highest 5 m DEM cell within 120 m of the GNIS point" } }, { "name": "Mount Starr King", "source": "USGS GNIS", "gnisId": 253928, "gnisClass": "Summit", "lat": 37.702799, "lon": -119.517605, "x": 7183.8, "y": 2768.5, "z": 3216.0, "summit": { "x": 7197.5, "y": 2770.0, "z": 3212.5, "note": "highest 5 m DEM cell within 200 m of the GNIS point" } }, { "name": "Liberty Cap", "source": "USGS GNIS", "gnisId": 254909, "gnisClass": "Summit", "lat": 37.728563, "lon": -119.532469, "x": 5950.5, "y": 2156.0, "z": 321.5, "summit": { "x": 5952.5, "y": 2156.5, "z": 312.5, "note": "highest 5 m DEM cell within 200 m of the GNIS point" } }, { "name": "Mount Broderick", "source": "USGS GNIS", "gnisId": 254663, "gnisClass": "Summit", "lat": 37.733537, "lon": -119.535161, "x": 5728.2, "y": 2040.4, "z": -236.9, "summit": { "x": 5722.5, "y": 2047.7, "z": -197.5, "note": "highest 5 m DEM cell within 200 m of the GNIS point" } }, { "name": "Leaning Tower", "source": "USGS GNIS", "gnisId": 262387, "gnisClass": "Cliff", "lat": 37.711043, "lon": -119.646846, "x": -4185.9, "y": 1809.4, "z": 1986.8, "summit": { "x": -4222.5, "y": 1891.8, "z": 2107.5, "note": "highest 5 m DEM cell within 120 m of the GNIS point" } } ], "waterfalls": [ { "name": "Bridalveil Fall", "publishedHeightM": 188, "source": "USGS GNIS", "gnisName": "Bridalveil Fall", "gnisId": 257449, "lat": 37.716599, "lon": -119.646846, "x": -4168.5, "y": 1326.5, "z": 1370.2, "lip": { "x": -4133.9, "y": 1463.4, "z": 1364.8 }, "base": { "x": -4161.2, "y": 1277.9, "z": 1348.7 }, "dropM": 185.5, "steep": { "meanSlopeDeg": 80.2, "horizontalRunM": 32.0, "fallAzimuthGridDeg": 300.5, "fallAzimuthTrueDeg": 298.9, "note": "near-vertical face: aerial ortho colour is smeared here; renderer substitutes granite shading tinted by the local average" }, "method": "lip/base = ends of the steepest contiguous drop (stream gradient > 0.9, gaps < 12 m closed) along the NHD flowline profile on the 5 m 3DEP DEM, nearest the GNIS point" }, { "name": "Upper Yosemite Fall", "publishedHeightM": 435, "source": "USGS GNIS", "gnisName": "Upper Yosemite Falls", "gnisId": 236934, "lat": 37.756319, "lon": -119.596845, "x": 361.8, "y": 1568.2, "z": -2914.3, "lip": { "x": 375.4, "y": 1981.6, "z": -2995.0 }, "base": { "x": 358.3, "y": 1562.7, "z": -2914.0 }, "dropM": 418.8, "steep": { "meanSlopeDeg": 78.7, "horizontalRunM": 84.0, "fallAzimuthGridDeg": 192.0, "fallAzimuthTrueDeg": 190.4, "note": "near-vertical face: aerial ortho colour is smeared here; renderer substitutes granite shading tinted by the local average" }, "method": "lip/base = ends of the steepest contiguous drop (stream gradient > 0.9, gaps < 12 m closed) along the NHD flowline profile on the 5 m 3DEP DEM, nearest the GNIS point" }, { "name": "Lower Yosemite Fall", "publishedHeightM": 98, "source": "USGS GNIS", "gnisName": "Lower Yosemite Fall", "gnisId": 227800, "lat": 37.751319, "lon": -119.596567, "x": 370.8, "y": 1370.7, "z": -2358.7, "lip": { "x": 339.7, "y": 1353.5, "z": -2377.8 }, "base": { "x": 340.9, "y": 1246.9, "z": -2339.2 }, "dropM": 106.6, "steep": { "meanSlopeDeg": 69.5, "horizontalRunM": 39.9, "fallAzimuthGridDeg": 178.2, "fallAzimuthTrueDeg": 176.6, "note": "near-vertical face: aerial ortho colour is smeared here; renderer substitutes granite shading tinted by the local average" }, "method": "lip/base = ends of the steepest contiguous drop (stream gradient > 0.9, gaps < 12 m closed) along the NHD flowline profile on the 5 m 3DEP DEM, nearest the GNIS point" }, { "name": "Ribbon Fall", "publishedHeightM": 491, "source": "USGS GNIS", "gnisName": "Ribbon Fall", "gnisId": 265392, "lat": 37.735764, "lon": -119.648236, "x": -4230.9, "y": 1705.2, "z": -760.2, "lip": { "x": -4183.5, "y": 2149.4, "z": -806.7 }, "base": { "x": -4220.8, "y": 1653.7, "z": -736.6 }, "dropM": 495.8, "steep": { "meanSlopeDeg": 80.8, "horizontalRunM": 80.0, "fallAzimuthGridDeg": 208.0, "fallAzimuthTrueDeg": 206.4, "note": "near-vertical face: aerial ortho colour is smeared here; renderer substitutes granite shading tinted by the local average" }, "method": "lip/base = ends of the steepest contiguous drop (stream gradient > 0.9, gaps < 12 m closed) along the NHD flowline profile on the 5 m 3DEP DEM, nearest the GNIS point" }, { "name": "Horsetail Fall", "publishedHeightM": 480, "source": "derived: NHD unnamed flowline + 3DEP DEM (no GNIS entry)", "lip": { "x": -2496.2, "y": 1903.3, "z": -237.9 }, "base": { "x": -2495.5, "y": 1458.2, "z": -208.2 }, "dropM": 445.1, "steep": { "meanSlopeDeg": 86.1, "horizontalRunM": 30.0, "fallAzimuthGridDeg": 178.7, "fallAzimuthTrueDeg": 177.1, "note": "near-vertical face: aerial ortho colour is smeared here; renderer substitutes granite shading tinted by the local average" }, "method": "lip/base = ends of the steepest contiguous drop (stream gradient > 0.9, gaps < 12 m closed) along the NHD flowline profile on the 5 m 3DEP DEM, nearest the GNIS point", "x": -2495.0, "z": -224.2, "y": 1798.5, "lat": 37.731379, "lon": -119.628386 }, { "name": "Sentinel Fall", "publishedHeightM": 610, "source": "USGS GNIS", "gnisName": "Sentinel Fall", "gnisId": 253839, "lat": 37.724932, "lon": -119.596566, "x": 289.7, "y": 1713.0, "z": 569.7, "lip": { "x": 328.1, "y": 1798.4, "z": 591.4 }, "base": { "x": 267.2, "y": 1590.9, "z": 547.0 }, "dropM": 207.5, "steep": { "meanSlopeDeg": 69.9, "horizontalRunM": 76.0, "fallAzimuthGridDeg": 306.1, "fallAzimuthTrueDeg": 304.5, "note": "near-vertical face: aerial ortho colour is smeared here; renderer substitutes granite shading tinted by the local average" }, "method": "lip/base = ends of the steepest contiguous drop (stream gradient > 0.9, gaps < 12 m closed) along the NHD flowline profile on the 5 m 3DEP DEM, nearest the GNIS point" }, { "name": "Vernal Fall", "publishedHeightM": 97, "source": "USGS GNIS", "gnisName": "Vernal Fall", "gnisId": 255195, "lat": 37.728762, "lon": -119.546219, "x": 4739.2, "y": 1578.8, "z": 266.5, "lip": { "x": 4970.2, "y": 1533.2, "z": 409.5 }, "base": { "x": 4945.4, "y": 1449.7, "z": 421.7 }, "dropM": 83.5, "steep": { "meanSlopeDeg": 71.5, "horizontalRunM": 28.0, "fallAzimuthGridDeg": 243.9, "fallAzimuthTrueDeg": 242.3, "note": "near-vertical face: aerial ortho colour is smeared here; renderer substitutes granite shading tinted by the local average" }, "method": "lip/base = ends of the steepest contiguous drop (stream gradient > 0.9, gaps < 12 m closed) along the NHD flowline profile on the 5 m 3DEP DEM, nearest the GNIS point" }, { "name": "Nevada Fall", "publishedHeightM": 181, "source": "USGS GNIS", "gnisName": "Nevada Fall", "gnisId": 254969, "lat": 37.725209, "lon": -119.533785, "x": 5824.5, "y": 1696.5, "z": 690.5, "lip": { "x": 5863.0, "y": 1798.7, "z": 731.2 }, "base": { "x": 5764.4, "y": 1634.7, "z": 705.6 }, "dropM": 164.0, "steep": { "meanSlopeDeg": 58.1, "horizontalRunM": 102.0, "fallAzimuthGridDeg": 284.6, "fallAzimuthTrueDeg": 283.0, "note": "near-vertical face: aerial ortho colour is smeared here; renderer substitutes granite shading tinted by the local average" }, "method": "lip/base = ends of the steepest contiguous drop (stream gradient > 0.9, gaps < 12 m closed) along the NHD flowline profile on the 5 m 3DEP DEM, nearest the GNIS point" } ], "vantages": [ { "id": "tunnel-view", "name": "Tunnel View", "lat": 37.715691, "lon": -119.677162, "x": -6844.0, "y": 1342.99, "z": 1395.0, "headingTrueDeg": 75.1, "headingGridDeg": 76.7, "pitchDeg": 2.5, "note": "North wall of the paved Tunnel View overlook at the east portal of the Wawona Tunnel (SR 41). Classic view east up the valley: El Capitan left, Bridalveil Fall right, Half Dome centre-distance.", "aim": [ { "name": "Half Dome", "distanceM": 13143.7, "elevationAngleDeg": 5.9, "azimuthGridDeg": 76.7 } ], "coverAtTripod": { "forest": 0.0, "meadow": 0.0, "rock": 1.0, "water": 0.0 }, "groundNote": "y = bare-earth 1 m lidar DEM at the tripod (add eye/tripod height in the renderer)" }, { "id": "valley-view", "name": "Valley View (Gates of the Valley)", "lat": 37.717199, "lon": -119.661903, "x": -5494.0, "y": 1184.36, "z": 1266.0, "headingTrueDeg": 72.8, "headingGridDeg": 74.4, "pitchDeg": 6.0, "note": "River edge of the Valley View turnout on Northside Drive (north bank of the Merced, ~2 m above the water). River in the foreground, El Capitan left, Cathedral Rocks and Bridalveil Fall right.", "aim": [ { "name": "El Capitan", "distanceM": 2860.6, "elevationAngleDeg": 21.4, "azimuthGridDeg": 50.0 }, { "name": "Cathedral Rocks", "distanceM": 2252.5, "elevationAngleDeg": 20.5, "azimuthGridDeg": 98.7 } ], "coverAtTripod": { "forest": 0.0, "meadow": 0.0, "rock": 1.0, "water": 0.0 }, "groundNote": "y = bare-earth 1 m lidar DEM at the tripod (add eye/tripod height in the renderer)" }, { "id": "el-capitan-meadow", "name": "El Capitan Meadow", "lat": 37.722762, "lon": -119.634513, "x": -3062.0, "y": 1204.57, "z": 717.0, "headingTrueDeg": 347.8, "headingGridDeg": 349.4, "pitchDeg": 24.0, "note": "Open grass in El Capitan Meadow between Northside Drive and the Merced, looking north up the ~900 m southwest face of El Capitan.", "aim": [ { "name": "El Capitan", "distanceM": 1311.7, "elevationAngleDeg": 40.0, "azimuthGridDeg": 349.4 } ], "coverAtTripod": { "forest": 0.0, "meadow": 1.0, "rock": 0.0, "water": 0.0 }, "groundNote": "y = bare-earth 1 m lidar DEM at the tripod (add eye/tripod height in the renderer)" }, { "id": "sentinel-bridge", "name": "Sentinel Bridge", "lat": 37.743123, "lon": -119.589573, "x": 962.0, "y": 1209.61, "z": -1432.0, "headingTrueDeg": 86.2, "headingGridDeg": 87.8, "pitchDeg": 3.0, "note": "South end of Sentinel Bridge by the east railing (bare-earth lidar has no bridge deck, so the tripod stands where the deck meets the bank), looking upstream (east) at Half Dome reflected in the Merced.", "aim": [ { "name": "Half Dome", "distanceM": 4989.3, "elevationAngleDeg": 16.6, "azimuthGridDeg": 87.8 } ], "coverAtTripod": { "forest": 0.03, "meadow": 0.0, "rock": 0.96, "water": 0.01 }, "groundNote": "y = bare-earth 1 m lidar DEM at the tripod (add eye/tripod height in the renderer)" }, { "id": "cooks-meadow", "name": "Cook's Meadow", "lat": 37.744103, "lon": -119.591309, "x": 812.0, "y": 1207.77, "z": -1545.0, "headingTrueDeg": 83.7, "headingGridDeg": 85.3, "pitchDeg": 7.0, "note": "On the Cook's Meadow boardwalk (south-west part of the meadow) looking north-east across the meadow toward Half Dome and the Royal Arches; Yosemite Falls is to the NNW.", "aim": [ { "name": "Half Dome", "distanceM": 5136.2, "elevationAngleDeg": 16.1, "azimuthGridDeg": 89.1 }, { "name": "Royal Arches", "distanceM": 2265.8, "elevationAngleDeg": 6.6, "azimuthGridDeg": 81.4 } ], "coverAtTripod": { "forest": 0.0, "meadow": 1.0, "rock": 0.0, "water": 0.0 }, "groundNote": "y = bare-earth 1 m lidar DEM at the tripod (add eye/tripod height in the renderer)" }, { "id": "yosemite-falls", "name": "Yosemite Falls", "lat": 37.748092, "lon": -119.596351, "x": 380.0, "y": 1212.79, "z": -2000.0, "headingTrueDeg": 357.3, "headingGridDeg": 358.9, "pitchDeg": 24.0, "note": "Lower Yosemite Fall trail, ~340 m south of the lower fall's plunge pool, looking north: Lower Yosemite Fall in front, Upper Yosemite Fall stacked above it on the north wall.", "aim": [ { "name": "Upper Yosemite Fall", "distanceM": 914.5, "elevationAngleDeg": 21.2, "azimuthGridDeg": 358.9 } ], "coverAtTripod": { "forest": 1.0, "meadow": 0.0, "rock": 0.0, "water": 0.0 }, "groundNote": "y = bare-earth 1 m lidar DEM at the tripod (add eye/tripod height in the renderer)" }, { "id": "bridalveil-fall", "name": "Bridalveil Fall", "lat": 37.718325, "lon": -119.650327, "x": -4470.0, "y": 1199.84, "z": 1170.0, "headingTrueDeg": 122.0, "headingGridDeg": 123.6, "pitchDeg": 18.0, "note": "Open ground by the Bridalveil Fall trail below the Wawona Road, ~330 m north-west of the fall, looking south-east up the hanging valley's 188 m drop.", "aim": [ { "name": "Bridalveil Fall", "distanceM": 361.9, "elevationAngleDeg": 19.1, "azimuthGridDeg": 123.6 } ], "coverAtTripod": { "forest": 1.0, "meadow": 0.0, "rock": 0.0, "water": 0.0 }, "groundNote": "y = bare-earth 1 m lidar DEM at the tripod (add eye/tripod height in the renderer)" }, { "id": "taft-point", "name": "Taft Point", "lat": 37.713088, "lon": -119.605563, "x": -540.0, "y": 2282.82, "z": 1862.0, "headingTrueDeg": 309.8, "headingGridDeg": 311.4, "pitchDeg": -6.0, "note": "The railing at the tip of Taft Point on the south rim (~2285 m), at the edge of a ~800 m drop: El Capitan across the valley, Yosemite Falls to the north-east, the Fissures behind.", "aim": [ { "name": "El Capitan", "distanceM": 3682.1, "elevationAngleDeg": 0.4, "azimuthGridDeg": 311.4 } ], "coverAtTripod": { "forest": 0.0, "meadow": 0.0, "rock": 1.0, "water": 0.0 }, "groundNote": "y = bare-earth 1 m lidar DEM at the tripod (add eye/tripod height in the renderer)" }, { "id": "glacier-point", "name": "Glacier Point", "lat": 37.730549, "lon": -119.573671, "x": 2325.0, "y": 2201.74, "z": 2.0, "headingTrueDeg": 64.2, "headingGridDeg": 65.8, "pitchDeg": -2.0, "note": "The overlook at Glacier Point (~2200 m), a few metres back from the 975 m drop to Curry Village: Half Dome face-on across Tenaya Canyon, Vernal and Nevada Falls on the Merced to its right.", "aim": [ { "name": "Half Dome", "distanceM": 3972.1, "elevationAngleDeg": 7.0, "azimuthGridDeg": 65.8 } ], "coverAtTripod": { "forest": 0.0, "meadow": 0.0, "rock": 1.0, "water": 0.0 }, "groundNote": "y = bare-earth 1 m lidar DEM at the tripod (add eye/tripod height in the renderer)" }, { "id": "swinging-bridge", "name": "Swinging Bridge", "lat": 37.740011, "lon": -119.599109, "x": 112.0, "y": 1206.09, "z": -1110.0, "headingTrueDeg": 6.3, "headingGridDeg": 7.9, "pitchDeg": 12.0, "note": "South bank of the Merced by Swinging Bridge (~2 m above the water), looking north across the river to Yosemite Falls and its reflection.", "aim": [ { "name": "Upper Yosemite Fall", "distanceM": 1821.5, "elevationAngleDeg": 11.2, "azimuthGridDeg": 7.9 } ], "coverAtTripod": { "forest": 1.0, "meadow": 0.0, "rock": 0.0, "water": 0.0 }, "groundNote": "y = bare-earth 1 m lidar DEM at the tripod (add eye/tripod height in the renderer)" } ], "sources": [ { "credit": "Elevation: USGS 3DEP", "service": "https://elevation.nationalmap.gov/arcgis/rest/services/3DEPElevation/ImageServer", "license": "Public domain (U.S. Government work)" }, { "credit": "Imagery: USDA NAIP", "service": "https://imagery.nationalmap.gov/arcgis/rest/services/USGSNAIPImagery/ImageServer", "license": "Public domain (USDA FSA / USGS TNM)" }, { "credit": "Hydrography: USGS NHD", "service": "https://hydro.nationalmap.gov/arcgis/rest/services/nhd/MapServer", "license": "Public domain (U.S. Government work)" }, { "credit": "Names: USGS GNIS", "service": "https://carto.nationalmap.gov/arcgis/rest/services/geonames/MapServer", "license": "Public domain (U.S. Government work)" } ], "credits": "Elevation: USGS 3DEP \u00b7 Imagery: USDA NAIP \u00b7 Hydrography: USGS NHD \u00b7 Names: USGS GNIS", "sanityChecks": { "elCapitanSummitM": { "value": 2307.6, "expected": 2307 }, "halfDomeSummitM": { "value": 2694.4, "expected": 2693 }, "glacierPointM": { "value": 2202.1, "expected": 2199 }, "valleyFloorRiverM": { "min": 1177.5, "max": 1214.2, "expected": "\u22481190\u20131220" }, "tunnelViewM": { "value": 1342.99, "expected": 1340 }, "mercedMonotonicRawRises": 26 }, "patches": [ { "id": "half-dome", "name": "Half Dome", "note": "Summit dome, the northwest face's rim and upper wall, and the shoulders (the face itself is near-vertical, so a height field carries its edges and ledges; the renderer shades the wall).", "bounds": { "minX": 5600, "maxX": 6240, "minZ": -1960, "maxZ": -1320 } } ] }