On 02/05/2013 12:54 PM, Hui Du wrote:
Hi All,
I have a question about package installation in R. We have developed a package,
say 'ABC'. We have installed it in two machines, A and B by running 'Install
Package(s) from local zip file'. Everything was fine. Right now, suppose that
package got damaged in machine A and our zipped file is gone, My question is
that may I directly copy ../library/ABC from machine B to machine A rather than
running 'Install Package(s) from local zip file' (I don't have that zip file
anymore)?
If the R versions are the same, this should work. If the versions are
different, it may not be. This means that you'll be in trouble if you
ever decide to upgrade R, even if you're not in trouble now. Remember
the two laws of computing:
1. Back it up.
2. Do it now.
(From Fred Davidson's book.)
Duncan Murdoch
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