[R] Having two different versions of a package in the same R installation

[Greg Snow]

So if you have both loaded in the same instance of R, how will R know
which version of lmer or other functions that you want to run?

It seems cleanest to me to have the 2 different instances of R running
like you do now.  The other option would be to change all the names
(exported ones anyways) in one version and change that package name as
well.  Then you would have 2 different package names with different
exported function names.

On Tue, Oct 2, 2012 at 2:18 PM, Søren Højsgaard <sorenh at math.aau.dk> wrote:
> Dear list,
>
> I am making some comparisons of two versions of the lme4 package: The CRAN version and the R-Forge version. For the moment I have two different R installations, each with a different version of lme4. However it would be convenient if I could have the same version within the same R installation such that I can run a code chunk on one lme4 version and immediately after run the same code chunk on another lme4 version. Does anyone know if this is possible?
>
> Best regards
> Søren
>
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-- 
Gregory (Greg) L. Snow Ph.D.
538280 at gmail.com