On Jan 7, 2013, at 8:06 AM, Michael Rennie wrote:


Any thoughts on what that dirty hack might be or any leads on where to start? Perhaps a whole new plot region in the margin or something? Is that even possible? I'm having a difficult time imagining how I can do this.

The `text` function accepts the 'xpd' argument for `par`.

?par
?text

(Similar but not exactly the same as R-FAQ "7.27 How can I create rotated axis labels?")

I'm not sure what sort of "dirt" Uwe was expecting, but I'm guessing he meant that you probably were not going to be getting exactly what you wanted with the first attempt and were going to need to adjust the locations "by hand" after digging around in the par documentation.

--
David.
Mike

Uwe Ligges wrote:


On 07.01.2013 07:00, Michael Rennie wrote:

Hi all,

I have read through the archives, but can't find a solution to this
problem.

I need the text direction on "dependent B", plotted in margin 4, to go
top to bottom (opposite what it is now). Here's some sample code:

#plot with mtext example

par(mgp = c(2,1,0), mfrow=c(2,2), las=1, mar=c(2,2,2,2), omi=
c(0.5,0.2,0,0.2))

a<-1:10
b<-7:16
c<-21:30

plot(a~b, ylab="", xlab="", xaxt="n")
axis(1, at=b, labels=FALSE, tick=TRUE)
plot(c~b, ylab="", xlab="", xaxt="n", yaxt="n")
axis(1, at=b, labels=FALSE, tick=TRUE)
axis(4, at=c(22,24,26,28,30), labels=TRUE, tick=TRUE)
plot(a~b, ylab="")
plot(c~b, ylab="", yaxt="n")
axis(4, at=c(22,24,26,28,30), labels=TRUE, tick=TRUE)

mtext(side=1, "independent", outer=TRUE, line=1, padj=1)
mtext(side=2, "dependent A", las=0, outer=TRUE, line=0.25)
mtext(side=4, "dependent B", las=0, outer=TRUE, line=0.25)

I have seen an example in help where i can use text and (srt) to
manipulate this with a single panel plot, but not for a multi-panel
example. Any help would be greatly appreciated.


You cannot do that with mtext, you rather need a dirty hack with text(), I believe.

Best,
Uwe Ligges



Cheers,

Mike

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David Winsemius, MD
Alameda, CA, USA

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