On Jun 7, 2012, at 09:25 , Rui Barradas wrote: > Hello, > > Try option stringsAsFactors, see ?read.csv or ?read.table > As for the thousands separator, see ?format
help(as.Date) should also help. (Hint: there's no dateFormat= argument) > > Hope this helps, > > Rui Barradas > > Em 07-06-2012 03:09, eric escreveu: >> How do I fix this error ? I tried coercion to a vector but that didn't work. >> >> msci <-read.csv("..MSCIexUS.csv", header=TRUE) >> >> head(msci) >> >> Date index >> 1 Dec 31, 1969 100 >> 2 Jan 30, 1970 97.655 >> 3 Feb 27, 1970 96.154 >> 4 Mar 31, 1970 95.857 >> 5 Apr 30, 1970 85.564 >> 6 May 29, 1970 79.005 >> >>> str(msci) >> 'data.frame': 510 obs. of 2 variables: >> $ Date : Factor w/ 510 levels "Apr 28, 1972",..: 98 178 134 311 13 342 268 >> 228 55 481 ... >> $ index: Factor w/ 510 levels "100","1,000.302",..: 1 499 493 488 444 412 >> 418 434 441 448 ... >> >> >>> msci$Date <-as.Date(msci$Date, dateFormat='%b %d, %Y') >> Error in charToDate(x) : >> character string is not in a standard unambiguous format >> >> >> -- >> View this message in context: >> http://r.789695.n4.nabble.com/factor-coercion-with-read-csv-or-read-table-tp4632622.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. >> > > ______________________________________________ > 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. -- Peter Dalgaard, Professor, Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000 Frederiksberg, Denmark Phone: (+45)38153501 Email: pd....@cbs.dk Priv: pda...@gmail.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.