Try playing around with the "oma" setting in par() -- it sets the outer
margins, which by default are zero.
The following shows the mtext label for me, using the windows device:
par(mfrow=c(2,2))
par("oma")
[1] 0 0 0 0
par("oma"=c(0,0,2,0))
for (i in 1:4) plot(0:1,0:1)
mtext(text = "my test plots", side = 3, outer = TRUE)
Mark Kimpel wrote:
I'm trying to use mtext to create a main title over multiple plots. Below is
a simple self-contained example and my sessionInfo (I should note I've also
tried this with R-2.8.1 with the same results). When I execute the code
chunk below, I get the plots, but no title. I've tried this using the screen
driver, pdf, and postscript. I've used different sizes of paper. I suspect I
am making an elementary error but searching the help files and help archives
hasn't provided me an answer.
Thanks for any help, Mark
#############################################
setwd("~/Desktop")
pdf("my.test.plots.pdf", paper = "letter")
par(mfrow=c(2,2))
for (i in 1:4){
plot(1:6, 1:6)
}
mtext(text = "my test plots", side = 3, outer = TRUE)
dev.off()
#
R version 2.10.0 Under development (unstable) (2009-09-21 r49771)
x86_64-unknown-linux-gnu
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
[3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
[5] LC_MONETARY=C LC_MESSAGES=en_US.UTF-8
[7] LC_PAPER=en_US.UTF-8 LC_NAME=C
[9] LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] car_1.2-15
loaded via a namespace (and not attached):
[1] tools_2.10.0
Mark W. Kimpel MD ** Neuroinformatics ** Dept. of Psychiatry
Indiana University School of Medicine
15032 Hunter Court, Westfield, IN 46074
(317) 490-5129 Work, & Mobile & VoiceMail
(317) 399-1219 Skype No Voicemail please
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______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
