Thanks Mr.Pr. Ripley, For pointing me in the good direction, i use win.graph() so i get an overview of the different graphs. Until now, i v had no problems with it, hope it stays that way.
for those whom have the same porblem, this is what i do: win.graph(); op <- par(mfrow = c(1,2) , oma= c(1,1,1,1)) boxplot(lg_value~labo, main="Test 1 at day 1",ylab="log(x) ", xlab="different lab's", data=dataset,ylim=c(-0.05,5)) mtext("At day 1",line=-1,outer=TRUE) boxplot(lg_value~labo, main="Test 2 at day 1",ylab="log(x)", xlab="different lab's", data=dataset,ylim=c(-0.05,5)) par(op); Kind regards, Tom W. Disclaimer: click here [[alternative HTML version deleted]] ______________________________________________ R-help@stat.math.ethz.ch 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.