首先:我对 R 完全陌生。所以，如果问题有点粗鲁，请原谅。
我正在尝试对功能数据进行多元聚类。因此，我使用 Ramsay & Silvermans fda -Package 构建基础样条扩展系统，用曲线填充它们并将 funclust 应用于数据集。
funclust-Function 给出了一个建议作为名为 clsResult 的聚类的向量，例如
clsResult <- c(2,2,2,3,3,2,3,2,2)
下一步，我想计算平均值、标准差等统计指标……这就是为什么我希望分离每个类别的数据并计算统计数据。
平均值计算的示例:
uniGroups <- sort(unique(as.vector(clsResult)))
j = 1
for (i in uniGroups) {
obsItems <- which(cls %in% i)
fdClsMean[j] <- mean.fd(fdData[obsItems])
plot(fdClsMean[j])
j <- j + 1
}
变量 $fdClsMean$ 现在应该包含类 2 (j=1) 和 3 (j=2) 的平均曲线。
但是通过这样做，我收到以下错误消息:
Error in basisobj$type : $ operator is invalid for atomic vectors In addition: Warning messages: 1: In fdClsMean[j] <- mean.fd(fdData[obsItems]) : number of items to replace is not a multiple of replacement length 2: In fdClsMean[j] <- mean.fd(fdData[obsItems]) : number of items to replace is not a multiple of replacement length
如果您有解决我的问题的想法，我们将非常感激分享此解决我的问题...
library("fda", lib.loc="~/R/win-library/3.3")
library("Funclustering", lib.loc="~/R/win-library/3.3")
library("RColorBrewer")
dataParam1 <- structure(c(0.983981396374184, 0.985667565176901, 0.987353733979619,
0.989039902782336, 0.990726071585054, 0.992412240387771, 0.994098409190489,
0.995784577993206, 0.997470746795924, 0.999156915598641, 1.00084308440136,
1.00252925320408, 1.00421542200679, 1.00590159080951, 1.00758775961223,
1.00927392841495, 1.01096009721766, 1.01264626602038, 1.0143324348231,
1.01601860362582), .Dim = c(20L, 1L))
dataParam2 <- structure(c(0.935807922166589, 0.943068751205336, 0.950253873594361,
0.957301033607757, 0.964196288650217, 0.970959127061196, 0.977617918964004,
0.984189979476357, 0.990668963023258, 0.997013182869952, 1.00323559960119,
1.00938298993635, 1.01547786768659, 1.02152013701955, 1.0274999384715,
1.0334274313317, 1.03932634191985, 1.04522750712415, 1.05115275864212,
1.05710855288827, 0.944940959736965, 0.952240113360859, 0.959441049641086,
0.966488172817292, 0.97341343344192, 0.980222400271887, 0.986902496653507,
0.993448451457477, 0.99986985906694, 1.00619310390116, 1.01243170737101,
1.01858974507763, 1.02466601555031, 1.03064904117653, 1.03651652181871,
1.04225550204583, 1.04786681255322, 1.05337761542761, 1.05881863137361,
1.06421715026136, 0.942134107403247, 0.949453882063492, 0.956590162743654,
0.96357651793391, 0.970434299161641, 0.977175121667198, 0.983804637900584,
0.990326873791272, 0.996747607095444, 1.00308113105998, 1.00933426721898,
1.01549301552775, 1.02154277232314, 1.02747204422399, 1.0332709082207,
1.03893203367462, 1.04446158372569, 1.04987525096791, 1.05520008265379,
1.06046511659515, 0.940314383500459, 0.947443682667925, 0.954466467035383,
0.961381593377821, 0.968188153734298, 0.974880350284026, 0.981455066595135,
0.987919638428396, 0.994283132996982, 1.00055457342423, 1.00673992698461,
1.01284173849434, 1.01885881474915, 1.02478559454537, 1.03060319500227,
1.03629277173835, 1.04185574786414, 1.04730757048597, 1.05268469714051,
1.05802280631965, 0.942200273210682, 0.949537004317527, 0.956623599167406,
0.963557498320244, 0.970424531942181, 0.977192573805136, 0.983814211488919,
0.990277133991018, 0.996653057498476, 1.00300075654431, 1.00933625505411,
1.01557529576456, 1.02166231349206, 1.02762357846321, 1.03350687583051,
1.0393552762534, 1.04517784054144, 1.05097645707751, 1.05675187074763,
1.06250633686837, 0.918631352137535, 0.926168759248379, 0.933383610717465,
0.940494686251366, 0.947502148141247, 0.954389475599439, 0.961178237128648,
0.967896560645279, 0.974461153761216, 0.980830749331793, 0.987116074571801,
0.99342184407008, 0.99972724615763, 1.00590479212328, 1.01188232533948,
1.01767723457145, 1.02335415372681, 1.02896316014817, 1.03452862636983,
1.0400636313845, 0.948799842055992, 0.95604267242623, 0.963156714842769,
0.970143065897736, 0.97700934008937, 0.983765186828579, 0.990417394142179,
0.996974994464174, 1.00344983548711, 1.00984462195143, 1.01615468562631,
1.02236814859822, 1.02847302994779, 1.0344602037918, 1.04032333101854,
1.04606311135653, 1.0517058460477, 1.05728582670374, 1.06283690174272,
1.06837903584947, 0.937423306587466, 0.944893372711674, 0.952215313085228,
0.959400162368507, 0.966459044310274, 0.973365235191435, 0.980115166296175,
0.986739018932661, 0.993253673429198, 0.999669550405327, 1.0059957825912,
1.012243755661, 1.01842325413489, 1.02453580456187, 1.03057996323426,
1.03655461352516, 1.04246624447002, 1.04832385360279, 1.05413680517058,
1.05991330934091, 0.929064626164736, 0.936318053087355, 0.943487918232746,
0.950544729360738, 0.957477543275641, 0.964285599365032, 0.970974339717291,
0.977549594039067, 0.984023864258173, 0.990424135490678, 0.996768075950284,
1.00305982852269, 1.00929091001667, 1.01544534554472, 1.02150212798765,
1.02744072592741, 1.03324516748151, 1.03892952896684, 1.04453104163349,
1.05008784822354, 0.93174505802589, 0.93913180070802, 0.946369086629952,
0.953430967475995, 0.960342639111208, 0.967156853413704, 0.973912193750937,
0.980515241879027, 0.986922063141707, 0.993226171372671, 0.999502978127663,
1.00578905610495, 1.01204829399176, 1.01823525590035, 1.02431611212046,
1.03025344575662, 1.03602479561377, 1.04166823872877, 1.04723886048702,
1.05279403456375), .Dim = c(20L, 10L))
dataParam3 <- structure(c(1.09752068287775, 1.06097903366602, 1.02849490570095,
1.00006829898254, 0.975699213510778, 0.955387649285669, 0.939133606307212,
0.926937084575411, 0.918798084090263, 0.91471660485177, 0.914692646859928,
0.918726210114739, 0.926817294616202, 0.938965900364315, 0.955172027359076,
0.975435675600487, 0.999756845088542, 1.02813553582325, 1.06057174780459,
1.09706548103259, 1.15326107555771, 1.09807034962895, 1.05134196032301,
1.0130026453226, 0.98288375314881, 0.960918342480959, 0.947105518522033,
0.941413952185788, 0.942411639052145, 0.946950432124294, 0.95383973098054,
0.963066506646878, 0.974630759123311, 0.98853248840984, 1.00477169450647,
1.02334837741319, 1.04426253713001, 1.06751417365691, 1.09310328699392,
1.12102987714102, 1.08280188279282, 1.0339980008814, 0.99569456675958,
0.96693069628092, 0.945845840346565, 0.930481541243696, 0.919050991554413,
0.911059810335648, 0.906507018011789, 0.905392614582835, 0.907716600048786,
0.913478974409641, 0.9226797376654, 0.935318889816062, 0.951396430861627,
0.970912360802095, 0.993866679637463, 1.02025938736774, 1.05009048399292,
1.083359969513, 1.07095942421253, 1.03585502956334, 1.00549026148582,
0.979865119979976, 0.958979605045805, 0.942833716683301, 0.931427454892467,
0.924759134770715, 0.922715496413862, 0.925000988457256, 0.931232021681892,
0.940974907301548, 0.954057033380912, 0.970475602146626, 0.99023061359869,
1.0133220677371, 1.03974996456186, 1.06951430407298, 1.10261508627044,
1.13905231115425, 1.11173319871675, 1.07474700125511, 1.04289364687089,
1.015144362519, 0.991499148199451, 0.971958003912224, 0.956520929657326,
0.94518792543476, 0.937950419475085, 0.934666308796689, 0.935126761169374,
0.939286949471352, 0.947146873129281, 0.95870653214316, 0.97396592651299,
0.992925056238774, 1.01558392132051, 1.0419425217582, 1.07200085755185,
1.10575892870146, 1.18452158624921, 1.12370399561361, 1.07335363604345,
1.03347050753872, 1.00405461009944, 0.985101985787768, 0.975484170734052,
0.971553828495674, 0.970543650731045, 0.971115755631005, 0.973165208428402,
0.97669200912324, 0.981696157715515, 0.988177654205224, 0.996136498592366,
1.00557269087694, 1.01648623105895, 1.02887711913838, 1.04274535511525,
1.05809093898954, 1.06649113627055, 1.024759151488, 0.991993644427598,
0.966493902211868, 0.946597045425109, 0.931024085529654, 0.919567682099019,
0.912227835133204, 0.90900454463221, 0.909897810596039, 0.914907633024689,
0.92403008262567, 0.936993197222042, 0.953120075509914, 0.972106114234723,
0.993944684266615, 1.01863578560559, 1.04617941825165, 1.07657558220479,
1.10982427746502, 1.1253871751946, 1.08517168478315, 1.05718721613491,
1.03386322378679, 1.01386163522085, 0.996961380709181, 0.983162460251796,
0.972464873848689, 0.96486862149986, 0.960373703205309, 0.958980118965034,
0.960687868779034, 0.965496952647307, 0.973407370569853, 0.984419122546672,
0.998532208577764, 1.01574662866313, 1.03606238280277, 1.05947947099668,
1.08599789324487, 1.10370505705101, 1.07105955490089, 1.042537295611,
1.01813827918133, 0.997862505611908, 0.981709974902708, 0.969649294946133,
0.961487003409706, 0.957046106397668, 0.956305216070678, 0.959264332428738,
0.965923455471853, 0.976282585200022, 0.990341721613246, 1.00810086471153,
1.02956001449487, 1.05471917096326, 1.08357833411671, 1.11613750395523,
1.15239574124661, 1.17014704608091, 1.12539391342114, 1.08622797779053,
1.05264923918907, 1.02465769761678, 1.00225335307363, 0.985253167489029,
0.972675875945994, 0.963752595681981, 0.958418763926775, 0.956674380680374,
0.95851944594278, 0.963953959713992, 0.972977921994012, 0.985591332782836,
1.00179419208046, 1.02158649988689, 1.04496825620213, 1.07193946102617,
1.10250011435902), .Dim = c(20L, 10L))
dataParam4 <- structure(c(0.998027622801379, 0.998139005663452, 0.998271051914594,
0.998423328203811, 0.998595824570253, 0.998787296486765, 0.998993932660538,
0.999210129159112, 0.999431146138834, 0.999656257754324, 0.999883808694126,
1.00011168941983, 1.00033957014554, 1.00056745087124, 1.00079533159695,
1.00102321232266, 1.00125109304836, 1.00147897377407, 1.00170685449977,
1.00193473522548, 0.998889268641521, 0.998995305981988, 0.999133764074945,
0.99928651296306, 0.999452207584217, 0.999630847938417, 0.99982243402566,
1.00002692932507, 1.00024266452332, 1.00046582375815, 1.00069345965806,
1.00092367291089, 1.00115613664618, 1.00139085086393, 1.00162781556414,
1.0018670307468, 1.00210849641193, 1.0023521950849, 1.00259752350583,
1.0028432697472, 0.99858396998391, 0.99870387003, 0.998847936377362,
0.999013112737924, 0.999193672030613, 0.999385662628316, 0.999586590108664,
0.999795769265012, 1.00001319873968, 1.00023887520213, 1.00047211431565,
1.00071073589431, 1.00095287258822, 1.00119740014348, 1.00144380788341,
1.00169207895861, 1.00194221336906, 1.00219421111478, 1.00244807219575,
1.00270379661199, 0.998270181390647, 0.998401339075749, 0.998551858486823,
0.998714133501672, 0.998888127245082, 0.999073839717051, 0.999271270917581,
0.999480396599729, 0.999699586873158, 0.999924714214518, 1.00015335625382,
1.00038507691478, 1.00061973867722, 1.00085733931215, 1.00109787881957,
1.00134135719949, 1.00158777258983, 1.00183667764293, 1.00208661796178,
1.00233662699637, 0.998524744128797, 0.99863486766656, 0.998766395000859,
0.998919231110539, 0.999090190884781, 0.99927303979413, 0.999465840024052,
0.999667849206214, 0.99987677069341, 1.00009092850323, 1.00030946243406,
1.00053217357039, 1.00075802790152, 1.00098471847949, 1.00121141596579,
1.00143811345209, 1.0016648109384, 1.0018915084247, 1.002118205911,
1.00234490339731, 0.997142773287418, 0.997216060623538, 0.997337368533094,
0.99748694099883, 0.997653350796102, 0.997832448382706, 0.998024129720826,
0.998228394810461, 0.998445199575133, 0.9986718900988, 0.998902679532502,
0.999136069032265, 0.999372057841899, 0.999610645961405, 0.999851833390782,
1.00009562013003, 1.00034200617915, 1.00059099153814, 1.00084257620701,
1.00109676018574, 0.998774949267013, 0.998910297833251, 0.999061521216158,
0.999227984680012, 0.999409687603104, 0.999605338922452, 0.99980970198149,
1.00001925408346, 1.00023376857386, 1.00045324545269, 1.00067768471994,
1.00090707945052, 1.00114095033083, 1.00137806194375, 1.00161725633342,
1.00185762361078, 1.00209895072581, 1.00234123762244, 1.00258448430066,
1.00282869076048, 0.998235072519545, 0.998344557202282, 0.998473860627503,
0.998622982795209, 0.9987919237054, 0.998980556065077, 0.999185038787191,
0.999398230779131, 0.999618154290144, 0.999844806347269, 1.00007793486253,
1.00031476590786, 1.00055208167417, 1.00078941271967, 1.00102675904437,
1.00126412064827, 1.00150149743951, 1.00173888541517, 1.00197627612265,
1.00221366684226, 0.997626171909553, 0.997748769141173, 0.997905556676881,
0.998072158983953, 0.998246774313143, 0.998429402664452, 0.998620044037878,
0.998818696371925, 0.999024892332026, 0.999237142122056, 0.999454583203959,
0.999677175584942, 0.999904919265005, 1.00013781424415, 1.00037584615344,
1.00061802820279, 1.00086189544351, 1.00110629255917, 1.00135119016537,
1.00159658826211, 0.99786182119536, 0.997943059648897, 0.998068582740041,
0.998214894107906, 0.998377432849961, 0.998555103351116, 0.998747881433229,
0.998955724328998, 0.999175663350038, 0.999400370426972, 0.999626749674934,
0.999854748906657, 1.00008436812214, 1.00031560732139, 1.0005484665044,
1.00078294567116, 1.00101904482169, 1.00125676395599, 1.00149610307404,
1.00173700388097), .Dim = c(20L, 10L))
# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# Param1
# ####################################################################################
xVal <- as.vector(dataParam1)
nObs <- dim(dataParam3)[2]
# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# Param2
# ####################################################################################
# Build the basis expansion system for Param2
fdBasisParam2 <- create.bspline.basis(rangeval = range(xVal), norder=6)
# Calculate the coefficients for Param2 as matrix at once
yVal <- as.matrix(dataParam2)
fdParam2 <- Data2fd(argvals=xVal,y=yVal, basisobj=fdBasisParam2, lambda=0)
round(fdParam2$coefs, 4)
rm(yVal)
plot(fdParam2)
# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# Param3
# ####################################################################################
# Build the basis expansion system for Param3
fdBasisParam3 <- create.bspline.basis(rangeval = range(xVal), norder=3)
# Calculate the coefficients for Param3 as matrix at once
yVal <- as.matrix(dataParam3)
fdParam3 <- Data2fd(argvals=xVal,y=yVal, basisobj=fdBasisParam3, lambda=0)
round(fdParam3$coefs, 4)
rm(yVal)
plot(fdParam3)
# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# Param4
# ####################################################################################
# Build the basis expansion system for Param4
fdBasisParam4 <- create.bspline.basis(rangeval = range(xVal), norder=3)
# Calculate the coefficients for Param4 as matrix at once
yVal <- as.matrix(dataParam4)
fdParam4 <- Data2fd(argvals=xVal,y=yVal, basisobj=fdBasisParam4, lambda=0)
round(fdParam4$coefs, 4)
rm(yVal)
plot(fdParam4)
# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# Clustering multivariate functional Data with funclust algorithm
# ####################################################################################
# -- Create a multivariate functional data object
allFd <- list(fdParam2,fdParam3,fdParam4)
# -- clustering in K classes
K <- 3 # Number of clusters
thd <- 0.05 # Threshold for Cantell Scree-Test
hard <- FALSE
nLoop <- 1
cls <- c()
tik <- c()
for (i in 1:nLoop) {
clustResult <- funclust(allFd,
K=K,
thd=thd,
increaseDimension=FALSE,
hard=hard
)
tik <- rbind(round((clustResult$tik)*100, 2))
cls <- rbind(cls,clustResult$cls)
}
#
# Calculation of class-specific characteristics
#
uniGroups <- sort(unique(as.vector(cls)))
fbParam2ClsMean <- list()
fbParam3ClsMean <- list()
fbParam4ClsMean <- list()
j <- 1
for (i in uniGroups) {
obsItems <- which(cls %in% i)
# Mean values
fbParam2ClsMean[[j]] <- mean.fd(fdParam2[obsItems])
fbParam3ClsMean[[j]] <- mean.fd(fdParam3[obsItems])
fbParam4ClsMean[[j]] <- mean.fd(fdParam4[obsItems])
j <- j+1
}
plot(fbParam2ClsMean)
plot(fbParam3ClsMean)
plot(fbParam4ClsMean)
最佳答案
额外的错误是由 mean.fd(fdData[obsItems]) 的输出引起的，而不是单个元素。你需要 list() 来放置它。 (listname[[1]] 表示列表中的第一个对象。)
fdClsMean <- list()
for (i in uniGroups) {
obsItems <- which(cls %in% i) # what is cls ??
fdClsMean[[j]] <- mean.fd(fdData[obsItems])
plot(fdClsMean[[j]])
j <- j + 1
}
[已编辑]
您的fbParamXClsMean是一个list类，并且具有三个fd对象。当你绘制它时，你需要拾取一个fd对象。
例如；
plot(fbParam2ClsMean[[1]])
plot(fbParam2ClsMean[[2]], add=T, col=2, lty=2)
plot(fbParam2ClsMean[[3]], add=T, col=3, lty=3)
# if use for()
a <- FALSE
for(i in 1:3) {
plot(fbParam2ClsMean[[i]], col = i, lty = i, add = a)
a <- TRUE
}
关于r - 如何在R中带有索引的对象中添加数据？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/39815986/