[R] building data object on iteration

[Liaw, Andy]

That's technically an S-PLUS question, more appropriate for S-news than
R-help.

In any case, see page 31 of `S Programming'.

Andy

> From: Spencer Graves
> 
>       What should one use in place of "sub" in S-Plus, where 
> "sub" is a 
> subscripting function? 
> 
>       Spencer Graves    
> 
> Uwe Ligges wrote:
> 
> > Fred J. wrote:
> >
> >> Hello
> >> I need help, few days tying to work this out but
> >> unable to find examples. "alos would appricate
> >> direction on how to find exmples"
> >> getting the file name "without the extension" into a
> >> character vector.
> >> for (i in dir("c:/data/")){
> >>     filename <- c(filename,sub("([^.]+)(\\..+)","\\1",
> >> i))
> >> }
> >> Error: Object "filename" not found
> >> and I understand why the error but cann't find a way
> >> to fix it.
> >>
> >> thanks
> >>
> >> ______________________________________________
> >> R-help at stat.math.ethz.ch mailing list
> >> https://www.stat.math.ethz.ch/mailman/listinfo/r-help
> >> PLEASE do read the posting guide! 
> >> http://www.R-project.org/posting-guide.html
> >
> >
> > You don't need a loop:
> >
> >  filename <- sub("([^.]+)(\\..+)", "\\1", dir("c:/data/"))
> >
> >
> > Uwe Ligges
> >
> >
> > PS: Just to get your loop working (you don't want to do it 
> that way!):
> >
> >  filename <- NULL
> >  for (i in dir("c:/data/")){
> >      filename <- c(filename,sub("([^.]+)(\\..+)","\\1", i))
> >
> > ______________________________________________
> > R-help at stat.math.ethz.ch mailing list
> > https://www.stat.math.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide! 
> > http://www.R-project.org/posting-guide.html
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://www.stat.math.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide! 
> http://www.R-project.org/posting-guide.html
> 
>