R help - Jun 2013 - Horizontal labels on a plot

Hi,

I have a plot with horizontal lables on the x-axis. For example:
Devonian volcanic rocks
n=2

with n=2 on a new line. How do I centre n=2 under the " Devonian volcanic
rocks  "
label?

This was my code: text(axis_text, par("usr")[three], labels =
paste(LABELS,
" \n ", " n =", t(t(name.count[,two]))), srt = txt_di,  adj
= txtadj, xpd TRUE, cex=txt_cex)

where LABELS=Devonian volcanic rocks
and name.count[,two] =2


Thanks
-- 
Shane

	[[alternative HTML version deleted]]

On Jun 7, 2013, at 8:38 AM, Shane Carey wrote:
> Hi,
> 
> I have a plot with horizontal lables on the x-axis. For example:
> Devonian volcanic rocks
> n=2
> 
> with n=2 on a new line. How do I centre n=2 under the " Devonian
volcanic
> rocks  "
> label?
> 
> This was my code: text(axis_text, par("usr")[three], labels =
paste(LABELS,
> " \n ", " n =", t(t(name.count[,two]))), srt = txt_di, 
adj = txtadj, xpd > TRUE, cex=txt_cex)
> 
Try: 

 ?, labels=bquote( atop(.(LABELS) , n==.(name.count[,two]) ) ), ?

(Unable to test with all those undefined parameters.)

?plotmath
# where one can read that "\n" is not honored by plotmath functions,
including paste().
?bquote

-- 
David
> where LABELS=Devonian volcanic rocks
> and name.count[,two] =2
> 
David Winsemius
Alameda, CA, USA