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.