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.