On Fri, 23 Jun 2006 16:12:27 -0500 Kerpel, John wrote:
> > SP500<-read.zoo("SP500.csv", sep = ",")
> Error in read.zoo("SP500.csv", sep = ",") :
> index contains NAs
Well, there are two problems with this: 1. the CSV is not
comma-separated (despite its siffix) and 2. the date format should be
specified.
> First ten records of SP500.csv:
>
> Date Open High Low Close
> Volume Adj. Close*
^^^^^^^^^^^
and I changed this name to "Adj.Close" which gives a syntactically
valid name in R.
Then I successfully employed:
SP500 <- read.zoo("SP500.csv", format = "%d-%b-%y", header = TRUE)
DGS10 <- read.zoo("DGS10.csv", format = "%m/%d/%Y", header = TRUE)
and then
weekdays(time(SP500))
weekdays(time(DGS10))
Z
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