[R] String problems

[Uwe Ligges]

MMarques Power wrote:

> after reading some docs I still can not find anything how to escape
> the "\" string
> 
> 
> I know that "\" in files needs to be escaped in order to be read by R.
> But in Windows if I try to call any shell util I keep getting errors.
> example:
> 
> afile <- "g:\\simulation\\at"
> works fine with read.table(afile) ...
> 
> but if I try sometthing like this:
> aprogram <- paste( "c:\dir", afile, sep=" " )
> system(aprogram)
> it crashes...
> 
> How can I remove the double "\" in the afile ?
> I know that I need to reconstruct the afile string without the double
> "\"
> 
> Ideas ?
> or am I missing something ?

Yes, you missed to double it in "c:\dir". Try:

  afile <- "g:\\simulation\\at"
  aprogram <- paste( "c:\\dir", afile, sep=" " )
  system(aprogram)

Uwe Ligges



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