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

[Marc Schwartz (via MN)]

On Fri, 2006-08-04 at 19:44 +0100, Prof Brian Ripley wrote:
> On Fri, 4 Aug 2006, Marc Schwartz (via MN) wrote:
> 
> > On Fri, 2006-08-04 at 09:47 -0600, Andrew Kniss 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
> > 
> > plotmath, as has been covered many times previously, does not support
> > multi-line expressions. A note should probably be added to ?plotmath on
> > this.
> 
> I've added a note.  I think what is exact is that control chars are not 
> interpreted ('expresssion' is an overloaded work in this context).
> 
> Thanks for the nudge (and please do continue to make such remarks).
> 
> Brian

<snip>

Happy to help and thanks for both noticing and taking the time to
incorporate the update.

Best regards,

Marc