Rscript and default packages
On Sep 3, 2009, at 13:52 , Romain Francois wrote:
On 09/03/2009 05:23 PM, Duncan Murdoch wrote:
On 03/09/2009 9:53 AM, Romain Francois wrote:
Hi, Is is possible to embed inside an R script, the name of the default packages to be loaded when the script is invoked with Rscript. I know about the --default-packages argument, but I was wondering if there was a mechanism to embed this information within the script itself
I don't understand what you'd want here that you don't get with attach() or require(). Why does it matter if they are default? Duncan Murdoch
Sorry for being vague. I am more interested in not loading some packages: $ time Rscript -e "#" real 0m0.224s user 0m0.188s sys 0m0.032s $ time Rscript --default-packages="base" -e "#" real 0m0.067s user 0m0.033s sys 0m0.016s $ time r -e "#" real 0m0.039s user 0m0.032s sys 0m0.006s This is related to the "How to ship R scripts with R packages" thread. I'd like for example to ship a script that I know only requires the "base" package. How would I specify this from within the script.
Well, what's wrong with: #!/usr/bin/Rscript --default-packages=base ginaz:sandbox$ time ./scr real 0m0.045s user 0m0.027s sys 0m0.017s .. as opposed to #!/usr/bin/Rscript --default-packages=base ginaz:sandbox$ time ./scr real 0m0.201s user 0m0.166s sys 0m0.034s Cheers, Simon