[R] Sweave and multiple graphs

[Gavin Simpson]

tobias.verbeke at bivv.be wrote:
> 
> Use list.files(). It has a path argument (to specify the directory)
> and a pattern argument to put the regular expression.
> 
> mygraphs <- list.files(path="./mygraphs", pattern="^ANCbwplot.*\\.eps")
> 
> See ?list.files and maybe ?regex
> 
> HTH,
> Tobias

Hi Tobias.

Thanks for the reply. I just found list.files() but was struggling with 
specifying the pattern argument. I have this working very well now for 
my application like so in a Sweave file:

<<echo=FALSE,results=tex>>=
postscript(file = "ANCbwplot%03d.eps", onefile = FALSE,
            paper = "special", width = 4, height = 6,
            horizontal = FALSE)
oldpar <- par(mfrow = c(4,3))
for (i in seq(along = g1865.w.res99))
   {
     multplot(g1865.w.res99[[i]], m.title = names(g1865.w.res99[i]))
   }
par(oldpar)
invisible(dev.off())
graphs <- list.files(pattern = "^ANCbwplot.*\\.eps")
for (i in seq(along = graphs))
   {
     cat("\\includegraphics{", graphs[i], "}\n\n", sep = "")
   }
@

multplot() is just a helper function that extracts the relevant 
information from the list g1865.w.res99 and plots a boxplot

Many thanks for your help,

Gavin
-- 
%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%
Gavin Simpson                     [T] +44 (0)20 7679 5522
ENSIS Research Fellow             [F] +44 (0)20 7679 7565
ENSIS Ltd. & ECRC                 [E] gavin.simpson at ucl.ac.uk
UCL Department of Geography       [W] http://www.ucl.ac.uk/~ucfagls/cv/
26 Bedford Way                    [W] http://www.ucl.ac.uk/~ucfagls/
London.  WC1H 0AP.
%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%