[R] Loading multiple packages with install.packages()...

[Bert Gunter]

"If you can get a vector with all the package names (I do not know how
to do this)..."

See ?available.packages

grep-ing the rownames of the available.packages() result appropriately
should give you a vector of the desired package names to install,
which can then be given to install.packages.

... Untested, so no guarantees.

Cheers,
Bert


On Mon, Sep 23, 2024 at 9:46 AM Ebert,Timothy Aaron <tebert using ufl.edu> wrote:
>
> If you can get a vector with all the package names (I do not know how to do this) then you could do something like this;
> # Function to check and install missing packages
> install_if_missing <- function(pkg) {
>   if (!require(pkg, character.only = TRUE)) {
>     install.packages(pkg, dependencies = TRUE)
>   }
>   library(pkg, character.only = TRUE)
> }
> # List of required packages.
> packages <- c("emmeans", "multcomp", "sandwich", "multcompView", "ggplot2", "stringr", "dplyr", "openxlsx", "tidyr")
> # Check and install each package
> lapply(packages, install_if_missing)
>
>
> Regards,
> Tim
> -----Original Message-----
> From: R-help <r-help-bounces using r-project.org> On Behalf Of Brian Lunergan
> Sent: Monday, September 23, 2024 12:35 PM
> To: r-help using r-project.org
> Subject: [R] Loading multiple packages with install.packages()...
>
> [External Email]
>
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> Hi folks:
>
> Curious question. I've added Rcmdr to my setup (R 4.4.1). I would like to add all of the plugins. Is there a way to get install.packages() to gather up everything starting 'rcmdrplugin', or do I have to list each package individually between the brackets?? 😕️
>
> Regards...
> - --
> Brian Lunergan
> Russell, Ontario
> Canada
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