R help - May 2003 - R CMD BATCH --vanilla --slave produces unwanted lines

Hello list

(thanks for all the help on my data.frame() question, especially to
Professor R for a working script...I was pleased to see the solution
wasn't obvious!)

Anyway, now I'm trying to run R in batch mode, but I'm getting extra
output, which I don't want (RedHat 8.3, R-1.7.0):

r:~% cat test.R
options(echo=FALSE)
write(rnorm(4),"")

r:~% R CMD BATCH --vanilla --slave test.R
r:~% cat test.Rout 
> options(echo=FALSE)
0.1500393 0.1067567 0.2707306 -1.657154
[1] 1.82 0.07 1.87 0.00 0.00
r:~% 


I just want the four random variables, not the "options(echo=FALSE)"
line nor the final line which looks like the output of a proc.time()
call (how come this is called at all if I'm using the --vanilla flag?)

How do I arrange for test.Rout to contain just a single line of four
random variables?



-- 

Robin Hankin, Lecturer,
School of Geography and Environmental Science
Tamaki Campus
Private Bag 92019 Auckland
New Zealand

r.hankin at auckland.ac.nz
tel 0064-9-373-7599 x6820; FAX 0064-9-373-7042

Supply a separate output file name explicitly to write().

-  tom blackwell  -  u michigan medical school  -  ann arbor  -

On Fri, 30 May 2003, Robin Hankin wrote:
> Anyway, now I'm trying to run R in batch mode, but I'm getting
extra
> output, which I don't want (RedHat 8.3, R-1.7.0):
>
> r:~% cat test.R
> options(echo=FALSE)
> write(rnorm(4),"")
>
> r:~% R CMD BATCH --vanilla --slave test.R
> r:~% cat test.Rout
> > options(echo=FALSE)
> 0.1500393 0.1067567 0.2707306 -1.657154
> [1] 1.82 0.07 1.87 0.00 0.00
> r:~%
>
> I just want the four random variables, not the
"options(echo=FALSE)"
> line nor the final line which looks like the output of a proc.time()
> call (how come this is called at all if I'm using the --vanilla flag?)
>
> How do I arrange for test.Rout to contain just a single line of four
> random variables?
>
> Robin Hankin, Lecturer,
> School of Geography and Environmental Science
> Tamaki Campus
> Private Bag 92019 Auckland
> New Zealand
>
> r.hankin at auckland.ac.nz
> tel 0064-9-373-7599 x6820; FAX 0064-9-373-7042
>

Robin Hankin <r.hankin at auckland.ac.nz> wrote:
> Anyway, now I'm trying to run R in batch mode, but I'm getting
extra
> output, which I don't want (RedHat 8.3, R-1.7.0):
...
> r:~% R CMD BATCH --vanilla --slave test.R
Why not just run:
unix> R --vanilla --slave < test.R > test.out

Then the "options(echo=FALSE)" line is unnecessary.  Note an explicit
q()
at the end of the script eliminates a single blank line that occurs otherwise.
So the test.R script is just:

  write(rnorm(4),"")
  q()

-- 
                              -- David Brahm (brahm at alum.mit.edu)