On Thu, 10 Jun 2010, Keith Jewell wrote:
In MS Windows I
a) invoke Rterm from a batch file (test.bat)
b) to execute commands from a script (m:\test.rsc)
c) capturing output in a log file (m:\test.log)
BUT if the script results in an error the error message is NOT written to
the log file, leaving me problems when the error is from a complicated
function.
Sure, warning and errors are written to stderr, which you did not
redirect. This is covered in rw-FAQ Q2.12. Using R CMD BATCH would
have done this for you ....
This is not to do with 'buffered output': in any case R uses minimal
buffering so stdout and stderr can be mixed nicely on a single log
file.
Simplified example:.
test.bat ------------------------
REM ensure 'R' is in path
path \\Server02\stats\R\R-Current\bin\;%PATH%
Rterm --no-init-file --no-restore-data --no-save --silent < m:\test.rsc >
m:\test.log
---------------------
m:\test.rsc -----------------
print("this is a test")
#generate an error
nls()
------------------
The error message:
"Error in .Internal(inherits(x, what, which)) : 'x' is missing"
is is NOT written to the log file, which just ends
m:\test.log --------------------------
<snip>
print("this is a test")
[1] "this is a test"
#generate an error
nls()
---------------------
I surmise this is due to output buffering (?). In an S-Plus version I turned
off buffering with
guiSetOption(option.name="BufferOutputWindows", value.string="F")
but I don't think this is available in R (?).
Has anyone any suggestions?
Thanks in advance,
Keith Jewell
--please do not edit the information below--
R Version:
platform = i386-pc-mingw32
arch = i386
os = mingw32
system = i386, mingw32
status =
major = 2
minor = 11.0
year = 2010
month = 04
day = 22
svn rev = 51801
language = R
version.string = R version 2.11.0 (2010-04-22)
Windows Server 2003 x64 (build 3790) Service Pack 2
Locale:
LC_COLLATE=English_United Kingdom.1252;LC_CTYPE=English_United
Kingdom.1252;LC_MONETARY=English_United
Kingdom.1252;LC_NUMERIC=C;LC_TIME=English_United Kingdom.1252
Search Path:
.GlobalEnv, package:datasets, CBRIForecast, package:RODBC, package:tree,
package:locfit, package:lattice, package:akima, package:nlme, package:MASS,
package:grDevices, package:geometry, KJRutils, package:xlsReadWrite,
package:svSocket, package:TinnR, package:R2HTML, package:Hmisc,
package:survival, package:splines, package:graphics, package:stats,
CBRIutils, package:utils, package:tcltk, package:tools, package:methods,
TempEnv, Autoloads, package:base
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--
Brian D. Ripley, rip...@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 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
