[R] Preventing repeated package installation, or pre installing packages

Thierry Onkelinx thierry.onkelinx at inbo.be
Wed Nov 29 17:20:38 CET 2017

Dear Larry,

Have a look at https://github.com/inbo/rstable That is a dockerfile
with a stable version of R and a set of packages.

Best regards,

ir. Thierry Onkelinx
Statisticus / Statistician

Vlaamse Overheid / Government of Flanders
Team Biometrie & Kwaliteitszorg / Team Biometrics & Quality Assurance
thierry.onkelinx op inbo.be
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2017-11-29 15:28 GMT+01:00 Larry Martell <larry.martell op gmail.com>:
> I have a R script that I call from python using rpy2. It uses dplyr, doBy,
> and ggplot2. The script has install.packages commands for these 3 packages.
> Even thought the packages are already installed it still downloads,
> builds, and installs them, which is very time consuming. Is there a way to
> have it only do the install if the package is not already installed?
> Also, I run in a docker container, so after the container is instantiated
> the packages are not there the first time the script runs. Is there a way
> to pre load the packages, in which case I would not need the
> install.packages commands for these packages and my above question would
> become moot.
>         [[alternative HTML version deleted]]
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