On 30.03.2011 15:15, Christopher Desjardins wrote:
Hi, I am trying to write a loop to recode my data from -999 to NA in R. What's the most efficient way to do this? Below is what I'm presently doing, which is inefficient. Thanks, Chris
I think read.table(na.string="-999.00000000") is. Uwe Ligges
dat0<- read.table("time1.dat") colnames(dat0)<- c("e1dq", "e1arcp", "e1dev", "s1prcp", "s1nrcp", "s1ints", "a1gpar", "a1pias", "a1devt") dat0[dat0$e1dq==-999.00000000,"e1dq"]<- NA dat0[dat0$e1arcp==-999.00000000,"e1arcp"]<- NA dat0[dat0$e1dev==-999.00000000,"e1dev"]<- NA dat0[dat0$s1prcp==-999.00000000,"s1prcp"]<- NA dat0[dat0$s1nrcp==-999.00000000,"s1nrcp"]<- NA dat0[dat0$s1ints==-999.00000000,"s1ints"]<- NA dat0[dat0$a1gpar==-999.00000000,"a1gpar"]<- NA dat0[dat0$a1pias==-999.00000000,"a1pias"]<- NA dat0[dat0$a1devt==-999.00000000,"a1devt"]<- NA [[alternative HTML version deleted]] ______________________________________________ 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.