r - Change the size of ggplot2 plot in Sweave without making the text/numbers disproportionately large -

i found question changing size of ggplot2 plot in sweave. added sweaveopts{width=3, height=3} , shrink size of plot, doesn't scale down text. in end, of numbers on axes overlap.

is there way scale entire ggplot2 plot in sweave don't have manually scale every component in original ggplot2 call? seems should able do, can't find in ggplot2 book or on website. thanks!

fwiw, here's call in sweave:

\sweaveopts{width=3, height=3} \begin{figure} \begin{center} <<fig=true>>= print(plot.m) @ \end{center} \caption{stuff} \label{fig:stuff} \end{figure} 

and call generates ggplot2 plot:

plot.m <- ggplot(temp, aes(date, spread)) + geom_bar(stat="identity") + scale_x_date(major="years", minor="months") 

it's sweave faq. google , find gazillion hits.

one approach write file pdf (no scaling) , scale on \includegraphics command. looked @ vignette finished couple of days ago wanted approximately wide page , did:

\begin{figure}[t!]   \centering <<somelabel,fig=true,width=8>>= ## r code omitted print(dotplot(foo ~ bar | somefactor, group=something,                data=somedf, layout=c(1,3),               xlab="some x label", ylab="",               key=simplekey(text=c("a","b"), space="top"))) @   \caption{some caption.}   \label{fig:somelabel} \end{figure} 

some 1 width dimension @ sweave options level. found small values not work -- try bigger eg 6 or 7 inches.