Antwort: Re: Antwort: Re: Re: sink(): Cannot open file
Sounds like it would be helpful to find out exactly which process is holding on to the file in order to figure out what's going on. From a quick look, it seems that http://superuser.com/questions/117902/find-out-which-process-is-locking-a-file-or-folder-in-windows gives some useful info on how to track down the process that looks the file. /Henrik
On Wed, May 11, 2016 at 9:47 AM, <G.Maubach at weinwolf.de> wrote:
Duncan,
thanks for the hint.
I have done it correctly in R fashion
## capture all the output to a file.
zz <- file("C:/Temp/all.Rout", open = "wt")
sink(zz)
sink(zz, type = "message")
try(log("a"))
## back to the console
sink(type = "message")
sink()
unlink("C:/Temp/all.Rout")
But the error persits.
Kind regards
Georg
Von: Duncan Murdoch <murdoch.duncan at gmail.com>
An: John Sorkin <jsorkin at grecc.umaryland.edu>, drjimlemon at gmail.com,
G.Maubach at weinwolf.de,
Kopie: r-help at r-project.org
Datum: 10.05.2016 19:03
Betreff: Re: [R] Antwort: Re: Re: sink(): Cannot open file
On 10/05/2016 11:15 AM, John Sorkin wrote:
George, I do not know what operating system you are working with, but when I use
sink() under windows, I need to specify a valid path which I don't see in your code. I might, for example specify:
sink("c:\myfile.txt")
Note that the backslash should be doubled (so it isn't interpreted as an escape for the "m" that follows it), or replaced with a forward slash. Duncan Murdoch
R code goes here sink() with the expectation that I would create a file myfile.txt that would
contain the output of my R program.
John John David Sorkin M.D., Ph.D. Professor of Medicine Chief, Biostatistics and Informatics University of Maryland School of Medicine Division of Gerontology and
Geriatric Medicine
Baltimore VA Medical Center 10 North Greene Street GRECC (BT/18/GR) Baltimore, MD 21201-1524 (Phone) 410-605-7119 (Fax) 410-605-7913 (Please call phone number above prior to faxing)
<G.Maubach at weinwolf.de> 05/10/16 11:10 AM >>>
Hi Jim,
I tried:
sink("all.Rout")
try(log("a"))
sink()
The program executes without warning or error. The file "all.Rout" is
begin created. Nothing will be written to it. The file is accessable
rights after the execution of the program by notepad.exe.
The program
zz <- file("all.Rout", open = "wt")
sink(zz, type = "message")
try(log("a"))
sink()
close(zz)
unlink(zz)
creates the file, does not write anything to it and is not accessable
after program execution in R with notepad.exe.
Any ideas what happens behind the szenes?
Kind regards
Georg
Von: Jim Lemon <drjimlemon at gmail.com>
An: G.Maubach at weinwolf.de,
Kopie: r-help mailing list <r-help at r-project.org>
Datum: 10.05.2016 13:16
Betreff: Re: Re: [R] sink(): Cannot open file
Have you tried:
sink("all.Rout")
try(log("a"))
sink()
Jim
On Tue, May 10, 2016 at 9:05 PM, <G.Maubach at weinwolf.de> wrote:
Hi Jim, thanks for your reply. ad 1) "all.Rout" was created in the correct directory. It exists properly
with
correct file properties on Windows, e.g. creation date and time and
file
size information. ad 2) I can not access the file with Notepad.exe directly after it was
created
by R. The error message is (translated): "Cannot access file "all.Rout". The file is opened by another
process."
ad 3) If I close R completely the file access is released. Then I can read
the
file using Notepad.exe. The contents is:
Error in log("a") : non-numeric argument to mathematical function
I tried
close(zz)
but the error persists.
To me it looks like R is still accessing the file and not releasing
the
connection for other programs. close(zz) should have solved the
problem
but unfortantely it doesn't. What else could I try? Kind regards Georg Von: Jim Lemon <drjimlemon at gmail.com> An: G.Maubach at weinwolf.de, Kopie: r-help mailing list <r-help at r-project.org> Datum: 10.05.2016 12:50 Betreff: Re: [R] sink(): Cannot open file Hi Georg, I don't suppose that you have: 1) checked that the file "all.Rout" exists somewhere? 2) if so, looked at the file with Notepad, perhaps? 3) let us in on the secret by pasting the contents of "all.Rout" into your message if it is not too big? At a guess, trying: close(zz) might get you there. Jim On Tue, May 10, 2016 at 5:25 PM, <G.Maubach at weinwolf.de> wrote:
Hi All, I would like to route the output to a file using sink(). When using
the
example from the ?sink documentation:
sink("sink-examp.txt")
i <- 1:10
outer(i, i, "*")
sink()
unlink("sink-examp.txt")
## capture all the output to a file.
zz <- file("all.Rout", open = "wt")
sink(zz)
sink(zz, type = "message")
try(log("a"))
## back to the console
sink(type = "message")
sink()
file.show("all.Rout")
I can not open the file in Windows Explorer. The error message is:
"Cannot open file. File is in use be another proces."
How can I close the file in a manner that I can open it right after
it
was
created? Kind regards Georg
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