[R] read.table( ... comment.char="#") truncated my data
Ren_Yu@hgsi.com
Ren_Yu at hgsi.com
Fri Oct 11 23:18:49 CEST 2002
Thanks a lot! That works. This will solve my problem. Otherwise I need to
update lots of R functions we have developed based on R1.3.1.
Ben Bolker <ben at zoo.ufl.edu>
10/11/2002 04:49 PM
Please respond to bolker
To: Ren_Yu at hgsi.com
cc: r-help at stat.math.ethz.ch
Subject: Re: [R] read.table( ... comment.char="#") truncated my data
I would guess the answer is yes (although I'm not in R-Core), but in the
meanwhile you can easily override the definition with your own by putting
something like
old.read.table <- read.table
read.table <- function(...) {
old.read.table(...,comment.char="")
}
in your .Rprofile or .First function, which will work
as long as you never use the comment.char argument explicitly
with your new version of read.table ...
(warning: I haven't tested this)
On Fri, 11 Oct 2002 Ren_Yu at hgsi.com wrote:
> Dear all,
>
> I found that the new feature of the comment.char="#" argument in the
> read.table function truncated my data while the data set actually
contains
> '#'. We analyze lot of data that contain '#'. This is really annoying
and
> it is also not compatible earlier version of R. I searched the R archive
> and found the following message for the scan function. Is it possible to
> change the default to " " in read.table ?
>
> Thanks,
>
> Ren
>
>
>
> On Tue, 19 Feb 2002, Steve Cassidy wrote:
> > I've just discovered the recent addition of the comment.char arg to
> scan, a
> > useful feature no doubt but the default value of # rather than ""
breaks
> my
> > code which looks for # as a delimeter in a file and provides a messy
> > incompatability with earlier versions of R and with Splus.
> >
> > Is there any chance that this default could be changed to ""?
> It already has been. The NEWS for R-patched / R-devel says:
> o The default has been changed to scan(comment.char="") for
> consistency with earlier code (as in the previous item).
>
--
318 Carr Hall bolker at zoo.ufl.edu
Zoology Department, University of Florida http://www.zoo.ufl.edu/bolker
Box 118525 (ph) 352-392-5697
Gainesville, FL 32611-8525 (fax) 352-392-3704
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