没有适用于’时间< - '的方法适用于类“c('xts',
发布时间:2020-12-16 03:19:20 所属栏目:百科 来源:网络整理
导读:请将此数据结构放入R中以重现我的示例: dX - structure(c(3272.1,3271.48,3281.03,3267.08,3260.65,NA,1616.3,1620.1,1639.9,1637.4,1669.6,1662.2,528.385,529.268,531.022,532.424,NA),.indexTZ = "",class = c("xts","zoo"),.indexCLASS = c("POSIXct","
请将此数据结构放入R中以重现我的示例:
dX <- structure(c(3272.1,3271.48,3281.03,3267.08,3260.65,NA,1616.3,1620.1,1639.9,1637.4,1669.6,1662.2,528.385,529.268,531.022,532.424,NA),.indexTZ = "",class = c("xts","zoo"),.indexCLASS = c("POSIXct","POSIXt"),tclass = c("POSIXct",tzone = "",index = structure(c(1345147200,1345406400,1345492800,1345579200,1345665600,1345752000),"POSIXt")),.Dim = c(6L,3L),.Dimnames = list(NULL,c("M1WO.Index","GC1.COMB.Comdty","JGAGGUSD.Index"))) 现在试试这段代码: library(PerformanceAnalytics) library(quantmod) library(timeSeries) charts.PerformanceSummary(R = dX) 并得到此错误: Error in UseMethod("time<-") : no applicable method for 'time<-' applied to an object of class "c('xts','zoo')" 我想这个问题是关于class = c(“xts,”zoo“)的数据,但是我不明白为什么它会以那种格式读取那些数据,我怎么能将它强制转换为一个简单的xts对象. 我怎么能解决这个问题? 我的系统: R version 2.15.1 (2012-06-22) Platform: i386-pc-mingw32/i386 (32-bit) locale: [1] LC_COLLATE=English_United States.1252 [2] LC_CTYPE=English_United States.1252 [3] LC_MONETARY=English_United States.1252 [4] LC_NUMERIC=C [5] LC_TIME=English_United States.1252 attached base packages: [1] stats graphics grDevices datasets utils methods base other attached packages: [1] timeSeries_2160.94 timeDate_2160.95 [3] quantmod_0.3-17 TTR_0.21-1 [5] Defaults_1.1-1 PerformanceAnalytics_1.0.4.4 [7] xts_0.8-6 zoo_1.7-7 [9] rcom_2.2-5 rscproxy_2.0-5 loaded via a namespace (and not attached): [1] fBasics_2160.81 fGarch_2110.80.1 grid_2.15.1 lattice_0.20-6 [5] MASS_7.3-18 stabledist_0.6-4 tools_2.15.1 当我加载包时,我得到以下内容: Loading required package: zoo Attaching package: ‘zoo’ The following object(s) are masked from ‘package:base’: as.Date,as.Date.numeric Loading required package: timeDate Attaching package: ‘timeDate’ The following object(s) are masked from ‘package:PerformanceAnalytics’: kurtosis,skewness Attaching package: ‘timeSeries’ The following object(s) are masked from ‘package:zoo’: time<- 根据错误信息,我猜这个问题来自于附加timeSeries和时间< - 被掩盖了来自package:zoo,我真的不知道它的含义以及如何处理. 解决方法
问题是package timeSeries.加载它会发出以下警告:
Attaching package: ‘timeSeries’ The following object(s) are masked from ‘package:zoo’: time<- 您可以分离包以使用charts.PerformanceSummary而不是再次加载它: detach('package:timeSeries') detach('package:timeDate') # since it masks statistical functions charts.PerformanceSummary(R = dX) library(timeSeries) (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |