[R] Install package automatically if not there?

[Bert Gunter]

You mean if a "package" has been installed?! (big difference)

?installed.packages  or ?.packages with all.available = TRUE
?install.packages



Bert Gunter
Genentech Nonclinical Biostatistics
 
 
-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On
Behalf Of Ralf B
Sent: Thursday, June 24, 2010 12:26 PM
To: r-help at r-project.org
Subject: [R] Install package automatically if not there?

Hi fans,

is it possible for a script to check if a library has been installed?
I want to automatically install it if it is missing to avoid scripts
to crash when running on a new machine...

Ralf

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