[R] expression() - Superscript in y-axis, keeping line break in string

Gabor Grothendieck
2006-08-04T16:04:45Z

Use atop:

   plot(1, main = expression(atop(" "^14*C*"-glyphosate
line", "line2")))

On 8/4/06, Andrew Kniss <akniss at uwyo.edu>
wrote:
> I've tried several different ways to accomplish this, but as yet to no
> avail.  My y-axis for a plot has a rather long label, and thus I have
> been using "/n" to break it into two lines.  However, to make it
> technically correct for publication, I also need to use superscript in
> the label.  For example:
>
>     par(oma=c(0,0,2,0),mar=c(5,6,0.25,2),lheight=1)
>     plot(1:10,
>          ylab="14C-glyphosate line1\n line2")
>
> will provide the text in two lines as I would like it.  However, I am
> trying to keep those same line breaks when using expression() to get my
> superscript number.  This will not work, as it aligns the "14C"
section
> with the bottom line of the expression making little sense to the
> reader.
>
>     par(oma=c(0,0,2,0),mar=c(5,6,0.25,2),lheight=1)
>     plot(1:10,
>          ylab=expression(" "^14*C*"-glyphosate line1\n
line2"))
>
> Is there a way to align the "14C" portion of the expression with
the top
> line of the string rather than the bottom line?  Any suggestions are
> greatly appreciated.
> Andrew
>
>
> --
> Andrew Kniss
> Assistant Research Scientist
> University of Wyoming
> Department of Plant Sciences
>
> akniss at uwyo.edu
> Office: (307) 766-3949
> Fax:    (307) 766-5549
>
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