[R] Question about version argument of require() and library()

James W. MacDonald jmacdon at med.umich.edu
Tue Oct 19 18:23:35 CEST 2004

Prof Brian Ripley wrote:

> Did you install this package with --with-package-versions?  The `version'
> argument picks up a particular versioned installed, not an ordinary
> install of the right version.

No I hadn't. That fixed it, and I do see the installWithVers argument to 
install.packages() for binary packages. Thanks for the help.



> We have rather little documentation on versioned installs.

James W. MacDonald
Affymetrix and cDNA Microarray Core
University of Michigan Cancer Center
1500 E. Medical Center Drive
7410 CCGC
Ann Arbor MI 48109

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