Hi Hurr, The problem is with the quotes in xlab="". In your version the quotes are not ASCII double quotes but some sort of "smart" quotes. Either your email client has substituted them or more likely, you are editing your code in something like MS Word and cutting and pasting the result into R. Try just typing this in R:
plot(x1,x2,type="l",xlab="") and the first error should not appear. The error with "mtext" is the same problem. The reason that the x axis label is in the wrong place is that it is not suppressed in the initial plot. Jim On Fri, Apr 3, 2015 at 3:44 PM, Hurr <hill0...@umn.edu> wrote: > Thanks, That was good help; I tried this; I hope I didn't copy it wrong: > > #try 2 axes at bottom > x1 <- c(1,2,3,4,5,6,7,8,9) > x2 <- c(5,1,9,6,3,7,8,2,4) > par(mar=c(7,4,4,2)) > plot(x1,x2,type="l",xlab=””) #scatter plot x1 on horiz, x2 on vert axis > require(plotrix) > fullaxis(1,at=pretty(x1),labels=round(1/pretty(x1),3),tick=TRUE, > col=”red”,col.axis=”red”,lwd=4,pos=-0.2) > mtext(“x1”,side=1,line=4.5) > > This is the response I got. > > > #try 2 axes at bottom > > x1 <- c(1,2,3,4,5,6,7,8,9) > > x2 <- c(5,1,9,6,3,7,8,2,4) > > par(mar=c(7,4,4,2)) > > plot(x1,x2,type="l",xlab=””) #scatter plot x1 on horiz, x2 on vert axis > Error: unexpected input in "plot(x1,x2,type="l",xlab=”" > > require(plotrix) > > fullaxis(1,at=pretty(x1),labels=round(1/pretty(x1),3),tick=TRUE, > + col=”red”,col.axis=”red”,lwd=4,pos=-0.2) > Error: unexpected input in: > "fullaxis(1,at=pretty(x1),labels=round(1/pretty(x1),3),tick=TRUE, > col=”" > > mtext(“x1”,side=1,line=4.5) > Error: unexpected input in "mtext(“" > > > > This works but the X-axis name is not in right place: > > #try 2 axes at bottom > x1 <- c(1,2,3,4,5,6,7,8,9) > x2 <- c(5,1,9,6,3,7,8,2,4) > par(mar=c(7,4,4,2)) > plot(x1,x2,type="l") #scatter plot x1 on horiz, x2 on vert axis > require(plotrix) > fullaxis(1,at=pretty(x1),labels=round(1/pretty(x1),2),tick=TRUE, > lwd=4,pos=-0.2) > > > > > -- > View this message in context: > http://r.789695.n4.nabble.com/double-axis-labels-function-of-each-other-tp4705457p4705460.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.