The original subject line is false. It *does* reposition, but `origin'
was being ignored, so your request was to reposition to the beginning of
the file, and that is what happened.
This was already fixed in R-patched: from NEWS there:
o seek() on file connections was ignoring the `origin' argument.
It's always worth looking at the current patched version.
On Tue, 29 Jan 2002 garbade@psy.uni-muenchen.de wrote:
Full_Name: Sven Garbade Version: 1.4.0 OS: Linux i386 Submission from: (NULL) (129.187.254.49) It seems that seek() can't reposition a file connection, but it can report the actual file position correctly if the file connection was repositioned by another function (e.g. readBin()). R code:
s <- file("p9_os/p9lr_all.mea","rb")
s
description class mode
"p9_os/p9lr_all.mea" "file" "rb"
text opened can read
"binary" "opened" "yes"
can write
"no"
seek(s, 0, "end")
[1] 0
seek(s)
[1] 0 # file connctor its still at the first position
readBin(s, integer(), 64, size=2)
[1] 103 1 400 1 749 0 0 0 0 0 0 0 [13] 0 0 0 0 0 0 0 0 0 0 0 0 [25] 0 0 0 0 0 0 0 0 11884 25888 25977 11552 [37] 22560 0 0 0 0 0 0 0 0 0 0 0 [49] 0 0 0 0 0 0 0 0 0 0 0 0 [61] 0 0 0 0
seek(s)
[1] 128 # here seek reports the correct postion -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Brian D. Ripley, ripley@stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272860 (secr) Oxford OX1 3TG, UK Fax: +44 1865 272595 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._