[R] getting "small" graphs with Sweave using Rnews.sty

[Duncan Murdoch]

On 11/4/2008 11:15 AM, Felipe Carrillo wrote:
> \setkeys{Gin}{width=8} gets the desired width but shifts the graph to the right. Is there another latex command to place the graph so that the margins on left and right of the page are the same? \centering or \begin{center} doesn't seem to get it right. I have about one inch margin to my right and about 2.5 inches to my left. 

Remember that by default R doesn't put symmetric margins around plots. 
Latex will center the whole plot, including white space.  If you want 
the actual plotting area centered, play around with par("mar"), e.g.

par(mar=c(4,4,4,4)+0.1)

for fat margins,

par(mar=c(2,2,2,2)+0.1)

for thin ones (which probably don't have enough room for all the labels 
you might add).

Duncan Murdoch

> Felipe D. Carrillo  
> Supervisory Fishery Biologist  
> Department of the Interior  
> US Fish & Wildlife Service  
> California, USA
> 
> 
> --- On Tue, 11/4/08, Duncan Murdoch <murdoch at stats.uwo.ca> wrote:
> 
>> From: Duncan Murdoch <murdoch at stats.uwo.ca>
>> Subject: Re: [R] getting "small" graphs with Sweave using Rnews.sty
>> To: "Jeff Hamann" <jeff.hamann at forestinformatics.com>
>> Cc: r-help at stat.math.ethz.ch
>> Date: Tuesday, November 4, 2008, 3:01 AM
>> Jeff Hamann wrote:
>> > I'm sorry for having to post this, but I can't
>> seem to find any solutions to this, which seems pretty
>> simple, but then again...
>> > 
>> > I've started playing with the example r news
>> project and wanted to start adding some graphs, but
>> replacing:
>> > 
>> > \begin{figure}
>> > \vspace*{.1in}
>> > \framebox[\textwidth]{\hfill
>> \raisebox{-.45in}{\rule{0in}{1in}}
>> >                        A graph goes here \hfill}
>> > \caption{\label{figure:onecolfig}
>> > A normal figure only occupies one column.}
>> > \end{figure}
>> > 
>> > yields a an empty box, which is good, with the
>> following:
>> > 
>> > \begin{figure}
>> > \vspace*{.1in}
>> > <<fig=true,echo=false>>=
>> > plot( rnorm( 100 ) )
>> > @
>> > \caption{A normal figure only occupies one
>> column.}
>> > \label{figure:onecolfig}
>> > \end{figure}
>> > 
>> > which isn't good, or at least yields a
>> "normal sized" graph that starts in the second
>> column, when I run Sweave( "yourarticle.rnw" ) and
>> the pdflatex wrapper
>> > 
>> > Is it possible, to get a "small" graphic
>> this way, or should I write
>> > out a temp graph as a pdf and include the graphic by
>> constructing the
>> > statement using Sweave?
>> > 
>> >   
>> There are two ways to control the size of an Sweave graph: 
>> by telling R the size you want, and by telling LaTeX how big
>> to make it when you include it.
>> 
>> You tell R the size by using <<fig=true, width=w,
>> height=h>>= (with w and h being numbers in units of
>> inches).  You tell LaTeX
>> (assuming you're using the graphicx package) by using
>> \setkeys{Gin}{width=w} (or maybe you'd want to set
>> the height, but I usually just set the width and
>> let LaTeX scale the height accordingly).  The w here is a
>> LaTeX measure such as \textwidth or 4in or whatever you
>> like.
>> 
>> I find the font choices in R look a little bit too large if
>> I tell R the actual size I want, so I generally use both:
>> tell R I want the figure larger than I really want it, and
>> then tell
>> LaTeX to shrink it to fit.
>> 
>> Duncan Murdoch
>> > Thanks for any advice,
>> > Jeff.
>> > 
>> > 
>> >  
>> ------------------------------------------------------------------------
>> > 
>> > ______________________________________________
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>> > and provide commented, minimal, self-contained,
>> reproducible code.
>> > 
>> 
>> ______________________________________________
>> R-help at r-project.org mailing list
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>> PLEASE do read the posting guide
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>> and provide commented, minimal, self-contained,
>> reproducible code.
> 
> ______________________________________________
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.