Re: [R] find max value in different columns

Hi, Try: dat <- read.table(text="ID    ONE  TWO  THREE 1    2  5    7 2    6  NA  NA 3    5  7    NA 4    1  NA  NA",sep="",header=TRUE) dat1 <- dat #Either: dat$MAX <- apply(dat[,-1],1,max,na.rm=TRUE) #or  dat1$MAX <- do.call('pmax',c(dat1[,2:4],list(na.rm=TRUE))

Re: [R] find max value in different columns

Thanks for the help. problem is solved. :-) -- View this message in context: http://r.789695.n4.nabble.com/find-max-value-in-different-columns-tp4685905p4685912.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org ma

Re: [R] find max value in different columns

February 27, 2014 8:06 AM > To: r-help@r-project.org > Subject: [R] find max value in different columns > > Hello together, > > i have a data.frame like this one: > > IDONE TWO THREE > 1 2 57 > 2 6 NA NA > 3 5 7

[R] find max value in different columns

Hello together, i have a data.frame like this one: IDONE TWO THREE 1 2 57 2 6 NA NA 3 5 7NA 4 1 NA NA Now i want a new column with the max-Value of "ONE", "TWO" and THREE. The result look like this one: IDONE TWO