Hi, ################################################################# ######### check for if file exist or not ################################################################# niftyquotes <- function(ndays){ library(RCurl) endDate =Sys.Date() startDate = as.Date(endDate-ndays, order="ymd")
start1<-format(startDate,"%d-%m-%Y") end1<-format(endDate ,"%d-%m-%Y") a=paste("http://nseindia.com/content/indices/histdata/S&P%20CNX%20NIFTY",start1,"-",end1,".csv",sep="") if (url.exists(a)){ return(print(paste(start1,"file exist"))) } else { return(print(paste(start1,"Not exist ********"))) } } # find for last 30 days N=30 for (i in 1:N){ niftyquotes(i) } 1] "07-11-2012 file exist" [1] "06-11-2012 file exist" [1] "05-11-2012 file exist" [1] "04-11-2012 file exist" [1] "03-11-2012 Not exist ********" [1] "02-11-2012 file exist" [1] "01-11-2012 file exist" [1] "31-10-2012 file exist" [1] "30-10-2012 file exist" [1] "29-10-2012 file exist" [1] "28-10-2012 file exist" [1] "27-10-2012 Not exist ********" [1] "26-10-2012 file exist" [1] "25-10-2012 Not exist ********" [1] "24-10-2012 file exist" [1] "23-10-2012 Not exist ********" [1] "22-10-2012 Not exist ********" [1] "21-10-2012 Not exist ********" [1] "20-10-2012 Not exist ********" [1] "19-10-2012 Not exist ********" [1] "18-10-2012 Not exist ********" [1] "17-10-2012 Not exist ********" [1] "16-10-2012 Not exist ********" [1] "15-10-2012 Not exist ********" [1] "14-10-2012 Not exist ********" [1] "13-10-2012 Not exist ********" [1] "12-10-2012 Not exist ********" [1] "11-10-2012 Not exist ********" [1] "10-10-2012 file exist" [1] "09-10-2012 Not exist ********" > > [1] "04-11-2012 file exist" is sunday how it shows file exist? please help me with regards veepsirtt -- View this message in context: http://r.789695.n4.nabble.com/if-url-exists-or-not-tp4648840.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.