[R] avoiding reinstall already installed library

Steve Lianoglou mailinglist.honeypot at gmail.com
Tue May 18 17:46:24 CEST 2010


On Tue, May 18, 2010 at 11:36 AM, milton ruser <milton.ruser at gmail.com> wrote:
> Dear R-experts,
> I am installing new libraries using
> install.packages("ggplot2",dependencies=T).
> But I perceive that many dependencies are already installed. As I am using
> a low-band internet, how can avoid reinstall installed libraries?

Look at the description of the "dependencies" argument in the
?instal.packages help:

"""logical indicating to also install uninstalled packages on which
these packages ..."""

It looks like your concern is already taken care of.

Steve Lianoglou
Graduate Student: Computational Systems Biology
 | Memorial Sloan-Kettering Cancer Center
 | Weill Medical College of Cornell University
Contact Info: http://cbio.mskcc.org/~lianos/contact

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