[R] Using R to create pdf's from each file in a directory

[Robert A LaBudde]

At 09:40 PM 4/20/2007, gecko951 wrote:
><snip>
>list <- dir("/tmp/data")
>for(x in list){
>d <- read.table(x, sep="\t", header=TRUE) # read data
>pdf("/tmp/graph/x.pdf")                              # file for graph
><snip>

I'm a tyro at R, but it's obvious here that the line

pdf("/tmp/graph/x.pdf")

has the intended file name string 'x' embedded with the literal 
string enclosed in quotation marks. Obviously he needs "/tmp/graph/" 
string concatenated with x and then ".pdf".

I would suggest a fix, but I am unable to find in the documentation 
how to concatenate two strings into a single string.

So I will amplify gecko951's question to include "How you you 
concatenate two strings in R?". I.e.,

x<-"abc"
y<-"def"

What operator or function returns "abcdef" as a result?

Thanks.

================================================================
Robert A. LaBudde, PhD, PAS, Dpl. ACAFS  e-mail: ral at lcfltd.com
Least Cost Formulations, Ltd.            URL: http://lcfltd.com/
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