Resize Arrays and Figures in a Sweave document.

Question

How is it possible to resize figures produced via a Sweave script?

I tried scalebox and others, but I can't succeed to obtain a figure with an acceptable size in my beamer with direct Sweave output like:

<<MyGraph,fig=T>>
x <- rnorm(1000)
y <- rnorm(1000)
plot(x,y)
@

Good answers for figures but for text output ? (see below)

I would also like indications to resize for example an output which is too large for the screen.

For example:

<<MyBigData.Frame,echo=off>>
summary(mybigdata.frame)
@

Answer 1

I usually put

\usepackege[nogin]{sweave}

to the preamble to override default Sweave scaling. That way the width and height of the figure could be controlled by the arguments to the code chunk

<<label=test, fig=TRUE, width=5, height=5>>=
x <- rnorm(1000)
y <- rnorm(1000)
plot(x,y)
@

Depends on your settings you maybe need to copy Sweave.sty to your local directory for this to work.

Answer 2

For the figures something like,

«MyGraph,fig=TRUE,height=4,width=8»= 
…
@

should work. (It defaults to inches.)

To set the default size of all figures in the document with respect to the text block, try, e.g.,

\setkeys{Gin}{width=0.9\textwidth}

You can set absolute widths (in inches or cm) that way, too.