No applicable method for 'time<-' applied to an object of class "c('xts', 'zoo')"
r, xts, zoo
Solution
The problem is package `timeSeries`. Loading it gives the following warning:
Attaching package: ‘timeSeries’
The following object(s) are masked from ‘package:zoo’:
time<-
You can detach the package for using `charts.PerformanceSummary` and than load it again:
detach('package:timeSeries')
detach('package:timeDate') # since it masks statistical functions
charts.PerformanceSummary(R = dX)
library(timeSeries)
Problem
Please, put this data structure into R in order to reproduce my example: ``` 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, NA), .indexTZ = "", class = c("xts", "zoo"), .indexCLASS = c("POSIXct", "POSIXt"), tclass = c("POSIXct", "POSIXt"), tzone = "", index = structure(c(1345147200, 1345406400, 1345492800, 1345579200, 1345665600, 1345752000), tzone = "", tclass = c("POSIXct", "POSIXt")), .Dim = c(6L, 3L), .Dimnames = list(NULL, c("M1WO.Index", "GC1.COMB.Comdty", "JGAGGUSD.Index"))) ``` Now try this code: ``` library(PerformanceAnalytics) library(quantmod) library(timeSeries) charts.PerformanceSummary(R = dX) ``` and get this error: ``` Error in UseMethod("time<-") : no applicable method for 'time<-' applied to an object of class "c('xts', 'zoo')" ``` I guess the issue is about the datas whose `class = c("xts, "zoo")`, but I do not understand why it reads those datas in that format and how may I coerce it to a simple `xts` object. How could I solve this issue? My system: ``` 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 ``` When I load packages, I get the following: ``` 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<- ``` According to the error messagge, I guess the issue comes when attaching `timeSeries` and `time<-` is masked from `package:zoo`, which I do not really know what it does mean and how to deal with.