I'm guessing there's a more efficient way to do the following using the index features of R. Appreciate any thoughts....
for (i in 1:nrow(dbs1)){ if(dbs1$Payor[i] %in% Payor.Group.Medicaid) dbs1$Payor.Group[i] = "Medicaid" if(dbs1$Payor[i] %in% Payor.Group.Medicare) dbs1$Payor.Group[i] = "Medicare" if(dbs1$Payor[i] %in% Payor.Group.Commercial) dbs1$Payor.Group[i] = "Commercial" if(dbs1$Payor[i] %in% Payor.Group.Workers.Comp) dbs1$Payor.Group[i] = "Workers Comp" if(dbs1$Payor[i] %in% Payor.Group.Self.Pay) dbs1$Payor.Group[i] = "Self Pay" if(dbs1$Adm.Source[i] %in% Adm.Source.Group.Newborn) dbs1$Adm.Source.Group[i] = "Newborn" if(dbs1$Adm.Source[i] %in% Adm.Source.Group.ED) dbs1$Adm.Source.Group[i] = "ED" if(dbs1$Adm.Source[i] %in% Adm.Source.Group.Routine) dbs1$Adm.Source.Group[i] = "Routine" if(dbs1$Adm.Source[i] %in% Adm.Source.Group.Transfer) dbs1$Adm.Source.Group[i] = "Transfer" } -- View this message in context: http://r.789695.n4.nabble.com/Basic-question-more-efficient-method-than-loop-tp2271096p2271096.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.