我正在尝试平均两个一维变量的元素。另外，我分别尝试对两个3维变量的元素求平均。
首先，我想找到这两个一维变量的均值：
get2.teratons #(90 values)
get5.teratons #(90 values)
这是get2.teratons的外观（与get5.teratons相同）：
print(get2.teratons)
[1] 0.4558545 0.4651129 0.4747509 0.4848242 0.4950900 0.5056109 0.5159335
0.5262532 0.5372275 0.5481839 0.5586787 0.5694379 0.5802970
[14] 0.5909211 0.6015753 0.6124256 0.6237733 0.6353634 0.6467227 0.6582857
0.6702509 0.6817027 0.6935311 0.7060161 0.7182312 0.7301909
[27] 0.7422574 0.7544744 0.7665907 0.7786409 0.7907518 0.8032732 0.8158733
0.8284363 0.8413905 0.8545881 0.8674711 0.8797701 0.8927392
[40] 0.9059937 0.9189707 0.9317215 0.9438155 0.9558035 0.9673665 0.9784927
0.9900898 1.0020388 1.0132683 1.0240023 1.0347708 1.0456077
[53] 1.0570347 1.0682903 1.0793535 1.0901511 1.1001753 1.1101276 1.1199142
1.1293237 1.1384669 1.1470002 1.1547341 1.1622488 1.1697549
[66] 1.1777542 1.1857587 1.1930233 1.1999645 1.2067172 1.2132979 1.2199317
1.2265673 1.2328599 1.2390689 1.2446050 1.2495579 1.2546455
[79] 1.2599212 1.2648733 1.2700068 1.2753889 1.2807509 1.2856922 1.2905927
1.2953338 1.3000484 1.3045992 1.3091128 1.3144190
因此，有效地，我想对get2teratons的值1和get5teratons的值1求平均值，然后对每个值求平均值2，依此类推。我尝试过：
mean(get2.teratons, get5.teratons)
但这会产生此错误：
Error in mean.default(get2.teratons, get5.teratons) :
'trim' must be numeric of length one
现在，对于我想平均的两个3维变量，它们分别是：
subset
subset5
为“子集”使用打印功能（子集5的想法相同）：
print(subset)
class : RasterStack
dimensions : 64, 128, 8192, 90 (nrow, ncol, ncell, nlayers)
resolution : 2.8125, 2.789327 (x, y)
extent : -181.4062, 178.5938, -89.25846, 89.25846 (xmin, xmax, ymin,
ymax)
coord. ref. : +proj=longlat +datum=WGS84 +ellps=WGS84 +towgs84=0,0,0
names : X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11, X12, X13, X14,
X15, ...
dim(subset)
[1] 64 128 90
dim(subset5)
[1] 64 128 90
我尝试了mean(subset,subset5)，但是有效，但是它将90层合并为1层。我希望将层数保持在90，但只需对每个层的“子集”和“子集5”的每个网格单元值取平均值。因此，例如，我想对“子集”的第1层的每个网格单元的值与“子集5”的第1层的每个网格单元的值求平均值，然后对与“子集”的第2层的那些网格单元求平均值。那些“ subset5”的第2层的值……一直到第90层。这样，我在所有网格单元上都有90个平均值。
dput(head(subset,5))
structure(c(11.5447145886719, 11.2479725852609, 10.0223480723798,
11.4909216295928, 12.5930442474782, 15.0295264553279, 14.6107862703502,
13.3623332250863, 10.4473929153755, 13.262210553512, 13.3166334126145,
13.7211008928716, 10.594900790602, 11.7217378690839, 10.8397546224296,
14.2727348953485, 13.6185416020453, 12.7485566306859, 11.7246472276747,
10.6815265025944, 13.1605062168092, 12.9131189547479, 12.6493454910815,
11.6938022430986, 11.4522186107934, 8.84930260945112, 11.5785481408238,
12.9859233275056, 13.6702361516654, 11.863912967965, 11.6624090820551,
12.1465771459043, 12.9789240192622, 13.5916746687144, 15.0383287109435,
7.89674604311585, 8.14079332631081, 7.05628590658307, 6.99759456329048,
8.06435288395733, 8.00622920505702, 7.35754533670843, 6.57949370797724,
6.26998774241656, 6.10911303665489, 10.1576759945601, 9.83650996349752,
10.6277788057923, 10.3647025069222, 9.38627037685364, 28.411143925041,
27.3436004295945, 25.7670222781599, 24.1854049265385, 22.7183715440333,
10.8529561199248, 11.1584928352386, 11.4545458462089, 11.7570801638067,
11.6314635146409, 13.7268429156393, 12.4547378160059, 12.8433785866946,
10.282119596377, 9.66278391424567, 6.39572446234524, 8.4569685626775,
12.253624945879, 12.4784250743687, 13.6823802720755, 8.65540341474116,
8.34308553021401, 8.30261853989214, 7.9798299819231, 7.96007991302758,
13.3976918645203, 15.2056947816163, 15.3097502421588, 18.0296610575169,
17.918016621843, 14.121591579169, 14.3091559410095, 14.7470911033452,
15.414851764217, 15.8059203531593, 22.9126498103142, 21.5608592145145,
19.7303873486817, 17.5689237657934, 15.4688697773963, 10.2526041911915,
10.4463449679315, 9.85705149360001, 9.5394266070798, 9.17961853556335,
14.064371259883, 12.626935634762, 12.1540617663413, 10.9235350973904,
9.32216013316065, 12.3676003888249, 12.9718807060272, 14.5685050170869,
13.8497828040272, 14.0683455392718, 8.09576804749668, 8.54510050266981,
8.02388715092093, 8.6679536383599, 9.38348234631121, 11.6279292851686,
11.5998465567827, 11.6469369269907, 11.6286710835993, 10.8152111526579,
17.4072104506195, 18.9169261604548, 19.5168524980545, 19.0377978142351,
19.5594304706901, 9.74474258255213, 10.2144323755056, 10.9722976572812,
11.5369332488626, 12.0274581480771, 14.007618650794, 14.0536692459136,
14.4861201290041, 14.133819937706, 13.045089924708, 19.9330265633762,
20.3158976510167, 21.4452845044434, 19.9475897010416, 20.3566399868578,
15.703826257959, 14.8260951507837, 14.6203982178122, 14.0476305037737,
13.2086589932442, 6.5044054761529, 6.51829722337425, 6.59741191193461,
6.57343484926969, 7.07112564705312, 8.42645864468068, 9.15604883339256,
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9.92726711556315, 11.5754703059793, 8.74886247329414, 8.99941809475422,
9.90840594749898, 11.1468604300171, 11.1322306562215, 10.49438144546,
9.50155213940889, 8.31737467087805, 5.76932597905397, 6.14411209244281,
7.39980584476143, 8.47632132936269, 8.00714262295514, 8.64454926922917,
7.79559868387878, 7.14818593114614, 7.42282171268016, 9.04718739911914,
12.0141573250294, 11.0411503817886, 11.7892528418452, 11.2668004352599,
10.5345542309806, 14.2355003859848, 12.4114783946425, 13.1144292186946,
14.3049817532301, 14.7282858844846, 9.90791183430701, 10.4058899218217,
12.0624131988734, 13.2521220948547, 13.9345653355122, 12.5256763771176,
12.3285478446633, 11.9927407242358, 11.6441268939525, 11.6448875516653,
30.5602320469916, 30.6964941322803, 27.3358505219221, 27.5474566966295,
24.3847575969994, 15.1250814087689, 15.0272130500525, 14.9795342702419,
14.2658210825175, 13.437497522682, 10.7001833617687, 10.0823557935655,
10.1298170629889, 9.99525294173509, 10.6919908896089, 9.04134479351342,
9.57930330187082, 9.58402880933136, 8.82056106347591, 9.06912200152874,
11.0435656271875, 12.827942892909, 14.6962288767099, 15.984565531835,
16.3673574104905, 17.7882182411849, 17.1887206379324, 16.4347139652818,
15.4833788517863, 14.3649869598448, 10.0324214436114, 10.9937381464988,
10.7803415972739, 10.64134365879, 10.3700830601156, 10.7242427766323,
10.1225153775886, 9.59254063200206, 9.67734202276915, 9.9705743137747,
6.15209711249918, 7.6417050557211, 9.55170588567853, 12.123644258827,
14.6793850231916, 13.8236853294075, 14.3564789090306, 13.6828002054244,
13.0476749036461, 12.3909330926836, 12.5938401091844, 12.5098232645541,
12.4792913440615, 10.5595408938825, 10.0890464382246, 9.20089432038367,
8.92592284362763, 8.59467086847872, 9.42603517323732, 10.0353622343391,
11.7311725392938, 12.4379832297564, 12.9343897104263, 12.9055073484778,
10.8944955747575, 13.6480727232993, 13.5285727679729, 13.1794585380703,
12.8222310449928, 12.3997843824327, 12.7413347829133, 14.3273916095495,
17.3931313678622, 18.2263168506324, 18.5841742437333, 6.59096706658602,
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14.3639346119016, 14.6688716020435, 14.1826340463012, 15.2044224087149,
15.5630568042397, 15.0458208750933, 10.0154311163351, 9.7418615128845,
11.8866622913629, 10.4000290855765, 9.74880487192422, 12.071524746716,
11.5644979756325, 11.0723461490124, 10.6282578315586, 10.2157085202634,
14.5142644643784, 12.1188929770142, 12.3748247511685, 12.4087903182954,
11.9534945581108, 9.04913682024926, 10.3765605948865, 11.6044067312032,
11.8693192955106, 11.4852412138134, 9.60276927798986, 8.47671863157302,
6.53922976925969, 6.61022553686053, 6.93009907845408, 13.2296028546989,
13.0423339549452, 13.0597360432148, 12.6910961698741, 12.4157820828259,
10.1926731644198, 8.71818219311535, 7.08254557102919, 8.77621911931783,
10.0059285527095, 12.931788386777, 12.2630294412374, 11.4822425879538,
10.4378029704094, 9.7940765786916, 13.0133786704391, 11.9061049539596,
12.0638377033174, 12.3013137839735, 12.9490484017879, 13.2149957120419,
13.1087802350521, 12.6286820042878, 12.2278920840472, 11.8682594038546,
10.9492189250886, 12.2341319918633, 12.9464382771403, 12.5120461452752,
12.5263502821326, 12.6686599105597, 12.7322974149138, 12.1948833111674,
12.1215357910842, 11.9392029941082, 15.2677292469889, 16.3731585256755,
17.8960581310093, 18.6334447469562, 19.5818214677274, 8.80653981585056,
9.830889897421, 9.35642933472991, 8.49255602806807, 9.19627505354583,
9.56638909410685, 10.4608207242563, 11.0053240321577, 12.0839668437839,
12.6748947892338, 10.9087632503361, 11.0474556684494, 9.86553691327572,
11.7183218244463, 12.5948534812778, 9.51134513597935, 7.67265690956265,
8.47005187533796, 8.948102616705, 9.48919930960983, 8.92916852608323,
9.19180226046592, 9.93818349670619, 10.3347131051123, 9.19244724791497,
16.0914938896894, 16.6821955237538, 17.9938221350312, 19.0754321403801,
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9.96728525497019, 9.48596934322268, 10.508708213456, 10.0394641282037,
10.5090778553858, 10.1252990076318, 9.86525025218725, 21.985590364784,
22.3454732447863, 22.693102620542, 22.8635905310512, 23.2176823541522,
18.6908649746329, 16.1407203879207, 14.8633007425815, 13.0084274802357,
10.3990704054013, 6.98735397309065, 6.87530469149351, 8.9313744334504,
7.93048026971519, 8.05362006649375, 7.19595712143928, 6.09859018586576,
7.31170470826328, 8.58990701381117, 8.4448722191155, 10.6643167790025,
10.839969618246, 10.5106293456629, 10.4457534151152, 11.2185546196997,
12.6707960385829, 12.9902018699795, 12.9533659201115, 12.501154281199,
12.3501065187156, 25.9615670889616, 28.099115844816, 30.2258117124438,
32.2391155175865, 34.1092220507562, 13.0570391658694, 14.2825467512012,
11.1714780796319, 9.62660552468151, 13.1034480873495, 12.0462608523667,
12.1476030908525, 12.087664520368, 12.486698012799, 12.6554797869176,
12.9096878226846, 13.7426960282028, 15.2569429948926, 17.1046711038798,
17.0782153028995, 8.75586932525039, 8.82860643323511, 8.69223182089627,
9.15108947083354, 9.4462743261829, 8.55356580577791, 8.69411900639534,
8.9102350641042, 9.00506707839668, 8.75238287262619, 12.8364848904312,
14.6456281654537, 13.9498212374747, 14.5683591719717, 14.3893217202276,
15.1805742178112, 16.7262759525329, 17.7521643228829, 18.5243777465075,
18.8792126253247, 7.70680792629719, 7.47225251980126, 7.72799758706242,
7.68415729980916, 7.50800217501819, 9.68811193015426, 10.5253741610795,
10.922572016716, 10.9020531177521, 10.406608460471, 22.1927281469107,
21.7946967110038, 22.5350291468203, 22.0015277154744, 23.2784972526133,
25.1319196075201, 24.1645314730704, 23.0207713320851, 14.8746414575726,
12.5255933962762, 19.3960575386882, 19.3368871696293, 19.8454126249999,
19.8410699609667, 19.8172997217625, 12.1799279004335, 11.8857935070992,
11.4909932948649, 11.3612791523337, 10.8840802218765, 11.1973982769996,
11.6429010406137, 11.2867686431855, 11.5507948212326, 11.7122428491712,
13.8513946440071, 14.9497504346073, 14.425096521154, 13.2822252810001,
12.4311964027584, 18.864199379459, 17.5528808031231, 17.7616731729358,
17.1655979007483, 16.6251927148551, 29.3679255992174, 28.4771841019392,
27.9151875525713, 26.65377818048, 25.2528126351535, 10.6545137241483,
10.91169398278, 11.0310669522732, 11.1646522767842, 11.2674177624285,
13.7821182142943, 14.1553220339119, 15.0969068985432, 15.9642276819795,
16.6291657369584, 9.4556876225397, 9.84383365139365, 11.0380863770843,
10.6556000187993, 11.1149505246431, 8.38961955159903, 9.4479993218556,
10.1951210992411, 10.6412279885262, 10.8386783860624, 8.28430177643895,
8.50012865848839, 8.0173090333119, 8.15484160557389, 8.07647814508528,
10.3200965328142, 10.4913098970428, 10.3476996067911, 10.6061836704612,
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12.6221365761012, 13.4234247263521, 15.5103187076747, 9.88674920517951,
9.41792191006243, 8.58000149019063, 7.98727499786764, 7.34257609583437,
13.8378750532866, 14.5356948953122, 14.5302697084844, 14.6059796679765,
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15.5585858970881, 15.4571908526123, 11.8359496816993, 11.2020426895469,
11.4698356948793, 11.8119870778173, 13.0321650300175, 17.7426278125495,
18.6734465416521, 18.8405636698008, 18.8715255819261, 18.9619445241988,
8.8628712343052, 8.674994437024, 9.01558804325759, 9.04601749498397,
8.85597188025713, 7.58305897470564, 7.92995095252991, 8.35649385116994,
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13.0261426325887, 12.6654123421758, 11.5908016450703, 13.0077322013676,
12.6599280629307, 11.9994106236845, 10.1917257998139, 9.89739338401705,
10.7914459425956, 11.8336362764239, 11.7934257723391, 11.2242249771953,
11.4056261256337, 7.95377462636679, 7.26088020019233, 7.43080170359462,
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9.43983325269073, 9.29652785416692, 10.826626047492, 14.3595944624394,
13.2217460777611, 12.7365244086832, 12.05212357454, 12.3027219437063,
13.1963438820094, 12.8045422956347, 13.7076315935701, 14.145736489445,
14.4983648322523, 14.3930621445179, 13.7241447810084, 13.0053710192442,
12.2289746068418, 11.4307265728712, 22.3180065862834, 17.3237380106002,
12.7182623371482, 13.0704908631742, 15.2839343994856, 11.1243085004389,
10.2472041500732, 10.5197993572801, 11.790946405381, 10.6045705731958,
15.1506495662034, 17.2426456119865, 18.0581725202501, 17.5418430939317,
16.011631116271, 16.6771751828492, 14.9888406973332, 14.0024574939162,
12.2754199896008, 10.462130815722, 14.700809167698, 14.7662508767098,
14.6368321962655, 13.8920741155744, 13.6426123324782, 7.52487180288881,
6.8714844295755, 7.11258086375892, 7.18187426682562, 7.26737848017365,
8.01721725147218, 9.51534896157682, 9.49199174065143, 9.66430208645761,
9.95999739971012, 12.6632636412978, 12.3405989259481, 12.1739520225674,
11.8746338412166, 11.4930238109082, 17.375064175576, 16.5855303872377,
14.6908791270107, 12.4465051107109, 10.6631374452263, 9.17110545560718,
8.15483720507473, 8.49230268504471, 9.13922635372728, 9.57141006365418,
16.033780714497, 17.3399481922388, 16.4341507013887, 15.3515323530883,
14.7840439807624, 18.8009101431817, 19.3318882025778, 20.5749990418553,
21.8101386912167, 21.9960610382259, 18.0659588892013, 17.8131891880184,
17.4943805672228, 17.3403216060251, 16.8955769855529, 12.620489532128,
12.2214950155467, 11.8860110174865, 11.3811555784196, 10.8314753975719,
13.4036011062562, 11.5633060690016, 11.6371187847108, 12.5311543699354,
13.4179203305393, 8.22134572081268, 7.50831649638712, 7.27005901280791,
7.60287002194673, 7.99200239125639, 7.90263516828418, 8.68863912764937,
10.4649641085416, 14.8291767574847, 13.2854715920985, 14.6683146245778,
15.3950218576938, 16.1753460299224, 18.3709637727588, 18.7799926847219,
9.85975402873009, 11.3263857085258, 14.0980262774974, 14.9891349021345,
15.565140126273, 17.7682626061141, 17.6397152245045, 18.1632375810295,
18.5020068660378, 18.6178280040622, 13.9469483401626, 13.3572864811867,
13.7237298768014, 15.0745737366378, 13.0753238685429, 7.80682750046253,
8.02811540197581, 8.54396957438439, 8.93615526147187, 9.23284823074937,
11.9208830874413, 11.34336409159, 9.64633170515299, 9.77506830822676,
9.60444209631532, 13.3866403251886, 13.6259520426393, 11.5198655985296,
10.6700826901942, 9.85463059041649, 16.529045579955, 14.2629016656429,
12.7639583777636, 13.6573225725442, 15.0617569684982, 9.50025964993984,
9.68771148473024, 9.27095026709139, 9.30016769561917, 9.69172285404056,
7.99956496339291, 7.4167326791212, 7.22712711431086, 8.56165643781424,
9.04990502167493, 16.1096038296819, 15.6424694694579, 16.1224633455276,
15.2468092739582, 15.2601830195636, 14.6924834232777, 15.2172856964171,
15.6576700508595, 15.8558295574039, 15.6930990982801, 10.0672576809302,
10.4989007581025, 10.7346505858004, 10.9321122989058, 10.1002658251673,
7.57602006196976, 8.28179977834225, 9.00425424333662, 8.75011347234249,
9.78429929818958, 8.22318575810641, 7.62580542359501, 7.52632019575685,
7.3945076437667, 8.00606575794518, 9.82791453134269, 10.3108039358631,
10.8194808941334, 11.0586643684655, 12.7866649534553, 16.4375944063067,
16.122004436329, 15.8343450631946, 15.183718688786, 14.59901179187,
13.086870778352, 13.8396339956671, 13.0286106839776, 12.6303931698203,
11.8594408035278, 12.4039673712105, 9.90002802573144, 9.60356576833874,
11.081666406244, 11.0487984493375, 15.9987502265722, 14.9749074596912,
13.8462209142745, 12.3910789377987, 11.7417626548558, 10.7962236274034,
11.77659323439, 11.0980827827007, 10.4603781597689, 10.4605271480978,
12.797769298777, 11.2864379771054, 9.58062659483403, 9.57864196971059,
9.7400170750916, 15.1035780552775, 15.3101249132305, 15.6179285142571,
14.4825984723866, 11.6881796624511, 11.791490809992, 11.2104086671025,
8.8539243908599, 8.34417999722064, 8.39954141993076, 9.41099112387747,
8.93235134426504, 9.60718737915158, 9.41101815551519, 9.83936337288469,
13.6638214811683, 14.4527215976268, 14.7365185897797, 13.2517122197896,
11.0009524505585, 9.60110148880631, 8.54964307509363, 8.75000974629074,
8.88564947526902, 7.84255138132721, 11.6202082950622, 12.075385870412,
12.8382677212358, 14.9491381365806, 20.0978868640959, 8.93126882147044,
9.09663643687963, 9.05409744009376, 8.98246862925589, 8.80278556142002,
8.68155935313553, 8.91096869017929, 7.71334832534194, 9.87222944386303,
11.2759735900909, 17.2249065712094, 17.9082475136966, 17.6210721954703,
16.7172310408205, 16.2506423424929, 12.9267014097422, 14.7103695664555,
19.504395313561, 22.4196153692901, 22.2453631460667, 8.23867111466825,
8.10000761412084, 7.8771845670417, 7.56322089582682, 7.14911003597081,
9.50618146453053, 8.6958515457809, 7.36113237217069, 6.79777669720352,
6.69330381788313), .Dim = c(10L, 90L), .Dimnames = list(NULL,
c("X1", "X2", "X3", "X4", "X5", "X6", "X7", "X8", "X9", "X10",
"X11", "X12", "X13", "X14", "X15", "X16", "X17", "X18", "X19",
"X20", "X21", "X22", "X23", "X24", "X25", "X26", "X27", "X28",
"X29", "X30", "X31", "X32", "X33", "X34", "X35", "X36", "X37",
"X38", "X39", "X40", "X41", "X42", "X43", "X44", "X45", "X46",
"X47", "X48", "X49", "X50", "X51", "X52", "X53", "X54", "X55",
"X56", "X57", "X58", "X59", "X60", "X61", "X62", "X63", "X64",
"X65", "X66", "X67", "X68", "X69", "X70", "X71", "X72", "X73",
"X74", "X75", "X76", "X77", "X78", "X79", "X80", "X81", "X82",
"X83", "X84", "X85", "X86", "X87", "X88", "X89", "X90")))
在上述两种情况下，是否有任何方法可以计算均值？
任何帮助将不胜感激！
谢谢