Hi, Kenneth It is not clear if you mean that your pdf output usually works, but it does not in this special case, or that this is a first effort with pdf. The answer might depend on which is the case case.
If you are just getting started, can I refer you to some lecture notes I made about saving graphs in R? http://pj.freefaculty.org/R/SummerCamp2010/PJ-Lectures/plotting2.pdf If you cut off the file name at the end, you will see the list of the other lectures I prepared for our university's "Summer Stats Camp" in 2010. If pdf does usually work, Could I suggest you take this code and rearrange? Where you have this: pdf("plot1.pdf") m1<-aov(Nitratos~Descripcion-1,data=Sx) vect1<-table(Sx$Descripcion) K<-contrMat(vect1,base=4) dnk<-glht(m1,linfct=K) summary(dnk) old.par<-par(no.readonly = TRUE) par(mai=c(1,2,1.25,1),mgp=c(3,1,0)) print(plot(dnk,las=1,xlab="")) print(abline(v=0,lty=2)) par(old.par) dev.off() Instead, separate the "stats" part from the plot part m1 <- aov(Nitratos~Descripcion-1, data=Sx) vect1 <- table(Sx$Descripcion) K <- contrMat(vect1, base=4) dnk <- glht(m1, linfct=K) summary(dnk) pdf("plot1.pdf", onefile=F, paper="special", height=6, width=6) ### old.par<-par(no.readonly = TRUE) par(mai = c(1, 2, 1.25, 1), mgp = c(3,1,0)) plot(dnk, las = 1, xlab = "") abline(v = 0, lty = 2) ####par(old.par) dev.off() I've made changes to cut your "print" statements and moved your pdf command down to "sandwich" the plot commands. I've added some embellishment which I almost guarantee will make your pdf output more useful. (Spaces are inserted around <- and after commas for readability. Check the R examples, they generally recommend that). To the R experts, it may be that the "par" stuff seems obvious, but to the rest of us, well, it is not completely so. You do not need to save the par values because the par setting you change is instantly forgotten when you do dev.off(). So you don't need to worry about saving the default settings and then returning them. Run par() to see for yourself after dev.off(). par's defaults will be back where they were at the beginning. You would only need to do "remember my par" thing if you were trying to put several graphs into a single output device, which you aren't. And I've made that clear by putting onefile=F in the pdf statement. I'd try it without the "par" at all if there is still trouble in the output file. I added the paper="special" option in the pdf command in order to make the margins in the output more reasonable. If you don't do that, the pdf output assumes you are wanting a whole sheet of paper, so there will be some massive margins in your output. Good luck. -- Paul E. Johnson Professor, Political Science 1541 Lilac Lane, Room 504 University of Kansas ______________________________________________ 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.
