Depending on how you created df maybe your code has the column names wrong. In any case these 4 alternatives all work. Start a fresh R session and then copy and paste this into it.
library(zoo) u <- "https://faculty.washington.edu/ezivot/econ424/sbuxPrices.csv"; fmt <- "%m/%d/%Y" # 1 sbux1.z <- read.csv.zoo(u, FUN = as.yearmon, format = fmt) # 2 df <- read.csv(u) sbux2.z <- read.zoo(df, FUN = as.yearmon, format = fmt) # 3 df <- read.csv(u) names(head(df)) ## [1] "Date" "Adj.Close" sbux3.z <- zoo(df$Adj.Close, as.yearmon(df$Date, fmt)) # 4 df <- read.csv(u) sbux4.z <- zoo(df[[2]], as.yearmon(df[[1]], fmt)) On Mon, Sep 18, 2017 at 7:36 AM, Upananda Pani <upananda.p...@gmail.com> wrote: > Dear All, > > While i am trying convert data frame object to zoo object I am > getting numeric(0) error in performance analytics package. > > The source code i am using from this website to learn r in finance: > https://faculty.washington.edu/ezivot/econ424/returnCalculations.r > > # create zoo objects from data.frame objects > dates.sbux = as.yearmon(sbux.df$Date, format="%m/%d/%Y") > dates.msft = as.yearmon(msft.df$Date, format="%m/%d/%Y") > sbux.z = zoo(x=sbux.df$Adj.Close, order.by=dates.sbux) > msft.z = zoo(x=msft.df$Adj.Close, order.by=dates.msft) > class(sbux.z) > head(sbux.z) >> head(sbux.z) > Data: > numeric(0) > > I will be grateful if anybody would like to guide me where i am making the > mistake. > > With best regards, > Upananda Pani > > > -- > > > You may delay, but time will not. > > > Research Scholar > alternative mail id: up...@iitkgp.ac.in > Department of HSS, IIT KGP > KGP > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. -- Statistics & Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.com ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
