On Dec 5, 2013, at 5:15 AM, Charles Thuo wrote:

> Hi,
> 
> I had downloaded the package zoo under R version 3.0.0. Afterwards i
> downloaded R version 3.0.2 on the same workstation. Is it possible to  use
> the zoo package from 3.0.0. in 3.0.2.
> 
Should be not only possible but trivial. 

> Is is possible to upgrade from version 3.0.1 to 3.0.2 for example   without
> downloading afresh and retain  the packages already installed in an earlier
> version.

The packages are by default kept in the same location on the basis of major 
version which they share,  and there should be no major design changes between 
R versions that share the first two numbers in the version hierarchy.

But why not just do this? ...

update.packages()         # fast; easy; automatic; ...  what's not to like?

-- 

David Winsemius
Alameda, CA, USA

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