Re: [R] updating columns using other column as reference

Amazing. Thanks a lot milton On Mon, Oct 19, 2009 at 12:55 PM, Henrique Dallazuanna wrote: > Milton, > > Try this: > > myDF[grep("k", names(myDF))] <- sapply(myDF[grep("k", names(myDF))], > function(idx)myDF$namesp[idx]) > > > On Mon, Oct 19, 2009 at 2:03 PM, milton ruser > wrote: > > Dear R-g

Re: [R] updating columns using other column as reference

Milton, Try this: myDF[grep("k", names(myDF))] <- sapply(myDF[grep("k", names(myDF))], function(idx)myDF$namesp[idx]) On Mon, Oct 19, 2009 at 2:03 PM, milton ruser wrote: > Dear R-gurus, > > Just supose I have a dara.frame that looks like > > myDF<-read.table(stdin(),head=T,sep=",") > codID,na