There aren't "empty" values in R..... nor is it likely you have a matrix of this form, but perhaps a data frame.
Perhaps this works for you, If "dat" is the name of your data.frame, dat[dat$AGE == 30,"TRUE/FALSE"] <- TRUE Next time do use dput() to give a reproducible example of your data -- if it's very large, just limit it to the first 30 rows or so with dput(head(dats, 30)) Michael On Fri, May 25, 2012 at 9:43 AM, Rantony <antony.akk...@ge.com> wrote: > Hi, > > Here i have been a matrix like this, > > *NAME AGE PALCE TRUE/FALSE* > ABC 20 INDIA > XYZ 30 FRANCE > PQR 40 USA > MNO 30 KENIYA > DEF 25 AUSTRALIA > > Here,* TRUE/FALSE* Column containing empty values. > > So my requirement what is , need to change all the *TRUE/FALSE *column value > into "*TRUE*" where *AGE = 30*. > Note :- i *dont want* to use* any loop *and do. Main intension is avoid > loop,bcz there is a bulk of data. > > Final Matrix should be like this > *NAME AGE PALCE TRUE/FALSE* > ABC 20 INDIA > XYZ 30 FRANCE TRUE > PQR 40 USA > MNO 30 KENIYA TRUE > DEF 25 AUSTRALIA > > > Immediate Help Requied. > > Your, > Antony. > > > -- > View this message in context: > http://r.789695.n4.nabble.com/Hash-Table-Select-and-Change-Data-iniside-Matrix-tp4631312.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.
