Rolf,

If you want to avoid the warning, why not use lib=.libPaths()[1]?
This is not to say that your suggestions aren't useful.

Cheers,
Peter Ehlers

Rolf Turner wrote:

I was flummoxed for a long time by errors generated when I did
something like

    install.packages(foo,lib="Rlib")

where ``Rlib'' is my personalized directory of R packages, which
lives in my home directory (from which I started R before issuing
the foregoing install.packages() call.

Recently someone (I forget who, but thanks very much to whomever
it was) pointed out that I needed to specify the complete pathname,
i.e. "/Users/rturner/Rlib" rather than the relative pathname "Rlib"
or "./Rlib" (which I'd also tried).  When the complete pathname is
given the install.packages() call works seamlessly.

Remark:  I have "/Users/rturner/Rlib" as the first entry of my .libPaths(),
so just doing install.packages(foo) works --- but this gives a warning
about lib not being specified, which I find irksome.

Questions:

    (1) Why is it that the complete pathname of ``lib'' has to
    be specified?  Cannot the code of install.packages() be
    adjusted to work with relative pathnames?

    (2) If indeed this is not possible, wouldn't it be kind and
    helpful, to us young ( :-) ) and naive persons, to put an
    indication in the help file for install.packages that the
    complete pathname is required?

    cheers,

        Rolf Turner

P. S. > sessionInfo()
R version 2.10.0 (2009-10-26)
i386-apple-darwin8.11.1

locale:
[1] C

attached base packages:
[1] datasets  utils     stats     graphics  grDevices methods   base

other attached packages:
[1] misc_0.0-11    fortunes_1.3-6 MASS_7.3-3


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