[R] Sweave, Xfig, pdflatex and \setkeys

[David Lindelöf]

On Tue, 2006-12-12 at 13:22 -0500, Kevin E. Thorpe wrote:
> > Trouble is that Sweave defines (with \setkeys) the default width of
> > \includegraphics to be 0.8 times the \textwidth. The result is that the
> > graphic is scaled, but not the text.
> > 
> > I was looking for a way to temporarily undefine the default width of
> > included graphics, but without success. Does anyone know how to undo a
> > definition that has been set with \setkeys?

> If you knew what setting you needed, you could try
> 
> \setkeys{Gin}{width=whatever}
> 
> before your include, and set it back to the default afterward with
> 
> \setkeys{Gin}{width=0.8\textwidth}

Yes, but the trouble is that for arbitrary figures created with Xfig I
cannot know what the correct width is going to be. And I could not find
any help on how to undefine variables set with \setkeys.

> I have run into this myself, but since I was also using beamer, it
> wasn't at all obvious what I should try for the setting, so I don't
> know if this will work.  I have used this to rescale the imported
> graphics from R.  Fortunately, the graphic I created in xfig could
> be completely specified in LaTeX, and so I exported it in that format
> and imported it with \scalebox{0.5}{\input{xfigfile.latex}}

But then you are severly limited, aren't you? For instance, you cannot
draw lines with slopes other that multiples of 45 degrees?

Cheers,
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