Colleagues,
I am trying to create a PDF document in which I use margin text with two
different fonts. The resulting text might be:
XXXXXyZZZ
where X and Z are one font and Y is the other.
My plan was to do this in the following manner:
mtext("XXXXX ZZZ", cex=2, adj=0.5, family=SOMEFONT)
mtext("Y", cex=2, adj=??, family=DIFFERENTFONT)
My question regards how to calculate "adj" for the second string.
I tried the following (different strings here and the same font was used for
both strings - even under these circumstances, it does not work correctly):
> STRING1 <- "0123456789 0"
> STRING2 <- " x "
> pdf("GREEK.pdf", width=10, height=8)
> par(mfrow=c(1,1))
> WIDTH1 <- strwidth("0123456789", cex=1, units="inches", family="",
> font=1)
> WIDTH2 <- strwidth("0", cex=1, units="inches", family="",
> font=1)
> plot(1,1,type="n", axes=F, xlab="", ylab="")
> mtext(line=-1, outer=T, cex=1, family="", font=1, adj=0.5, STRING1)
> mtext(line=-1, outer=T, cex=1, family="", font=1, adj=0.5 - (WIDTH2 -
> WIDTH1)/2/par()$pin[1], STRING2)
> mtext(line=-1, outer=F, cex=1, family="", font=1, adj=0.5, STRING1)
> mtext(line=-1, outer=F, cex=1, family="", font=1, adj=0.5 - (WIDTH2 -
> WIDTH1)/2/par()$din[1], STRING2)
> dev.off()
The logic is:
1. determine the width of the first and second portions of the string
for the first font
2. one-half of the difference between these two should be the offset
3. however, WIDTH1 and WIDTH2 have units of inches - so I need to
normalize them to the width of the figure (if outer=T, use width of the page)
Unfortunately, spacing is not perfect. Perhaps I misunderstand how "adj" is
applied or I am apply. Can anyone help me to understand how "adj" is applied?
Thanks in advance.
Dennis
Dennis Fisher MD
P < (The "P Less Than" Company)
Phone: 1-866-PLessThan (1-866-753-7784)
Fax: 1-866-PLessThan (1-866-753-7784)
www.PLessThan.com
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