R help - Nov 1999 - some related problems

I just tried to batch-start rgui.exe (not rterm.exe) in a way, that it
read.table()s data from a file with changing filename. As I understand no
command line parameters are available for that, so instead I tried to pass
the filename to an approbriate .RProfile, which works roughly, BUT

## this is my %R_USER%\.RProfile
im <- read.table("d:/temp/im/temp.csv", header=TRUE,
sep=",")
nam <- names(im)
nnam <- nchar(nam)
newnam <- substr(nam, 2, nnam-1) # change names from e.g.
<"x"> to <x>
names(im) <- newnam
pairs2(im)
## end

Two lines in this code do not work *during* .RProfile execution, but they
work if entered manually *after* all profile executions:

names(im) <- newnam  # should work always
Error: attempt to set an attribute on NULL

pairs2(im) # my global RProfile sources a file which defines pairs2()
Error: couldn't find function "pairs2"

How can I make these commands working during .RProfile execution?
Moreover: how can I exchange single Backslashes to slashes in R?

I tried:
> gsub("[\\]", "/", "c:\temp")
[1] "c:     emp"
> gsub("[\\]", "/", "c:\\temp")
[1] "c:/temp"

Thanks for any help

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Dr. Jens Oehlschl?gel-Akiyoshi
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"Jens Oehlschl?gel-Akiyoshi" <jens.oehlschlaegel-akiyoshi at
mdfactory.de> writes:
> How can I make these commands working during .RProfile execution?
> Moreover: how can I exchange single Backslashes to slashes in R?
> 
> I tried:
> 
> > gsub("[\\]", "/", "c:\temp")
> [1] "c:     emp"
> > gsub("[\\]", "/", "c:\\temp")
> [1] "c:/temp"
The 2nd line *is* the way to change a single backslash.

Hint:
> nchar("c:\temp")
[1] 6
> substr("c:\temp",3,3)
[1] "\t"
> nchar("c:\\temp")
[1] 7
> substr("c:\\temp",3,3)
[1] "\\"
> nchar("\\")
[1] 1
> cat("\\")
\> 


-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907
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