I am new to R so I apologize if my question is trivial. I have not been able
to figure out whether what I want to do is even possible.
I have a data frame of stock ticker symbols which I store into R space from
a txt file as follows:
tickers <- read.csv("stocks.txt", header=FALSE, sep=",")
tickers <- tickers[1] / the tickers are stored in the first column
> tickers
V1
1 BCSI
2 WBSN
3 NTAP
4 FFIV
5 SU
> is.vector(tickers)
[1] FALSE
>
> is.data.frame(tickers)
[1] TRUE
I tried to do the following without success.
stockdata <- data.frame()
stockdata <- coredata(get.hist.quote(instruments=tickers,
start="2011-01-01", end="2011-01-31", quote=c("Close"), provider="yahoo"))
Error in get.hist.quote(instruments = tickers, start = "2011-01-01", end =
"2011-01-31", :
unused argument(s) (instruments = tickers)
So I coerced the data stored in 'tickers' to be a character as follows:
> as.character(tickers)
Then I tried to execute get.hist.quote as above with the same erro.
stockdata <- coredata(get.hist.quote(instruments=tickers,
start="2011-01-01", end="2011-01-31", quote=c("Close"), provider="yahoo"))
Error in get.hist.quote(instruments = tickers, start = "2011-01-01", end =
"2011-01-31", :
unused argument(s) (instruments = tickers)
I dont want to use loops because of inefficiencies. I know in Matlab I can
take advantage of the matrix/vector environment by passing a variable as a
vector. I think there should be a clean way to do what I want to do. I have
1500+ tickers and I dont want to cycle through each of them in a loop.
I would greatly appreciate some guidance.
--
View this message in context:
http://r.789695.n4.nabble.com/pass-character-vector-in-instrument-field-of-get-hist-quote-function-tp3350779p3350779.html
Sent from the R help mailing list archive at Nabble.com.
______________________________________________
R-help@r-project.org mailing list
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.
