Re: [R] everytime I download a new version of R, need I reinstall all packages?

From: Christos Hatzis <>
Date: Wed 17 May 2006 - 10:53:19 EST

The process that you outlined is described in the Windows R FAQ 2.8 "What's the best way to upgrade?".
The same process should apply to other platforms as well, but I don't think
it is in the general R FAQ. Perhaps it should.


-----Original Message-----
[] On Behalf Of Berton Gunter Sent: Tuesday, May 16, 2006 8:16 PM
To: 'Michael'
Subject: Re: [R] everytime I download a new version of R,need I reinstall all packages?

> I think you did not answer my question... I now upgraded my main R
> program from 2.2.1 to 2.3.0 and I removed the 2.2.1 installation, but
> all the

Wait until after you use update.packages() to remove your previous installation. You can keep multiple versions of R simultaneously, so this is no problem. That is:

  1. Install new R version
  2. Run update.packages() on old library version
  3. Copy updated old library to new library location (or point new library location to old)
  4. Remove old R version (and its libraries if you copied them)

There are probably better ways to do this, which this message may stimulate. mailing list PLEASE do read the posting guide! mailing list PLEASE do read the posting guide! Received on Wed May 17 10:59:18 2006

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