[R] Unable to require installed package

Prof Brian Ripley ripley at stats.ox.ac.uk
Thu Jan 27 10:21:22 CET 2011

On Thu, 27 Jan 2011, Barry Rowlingson wrote:

> On Thu, Jan 27, 2011 at 7:57 AM, 刘力平 <liping.liulp at gmail.com> wrote:
>> Hi,
>> I write a package in Linux and ready to distribute, and I can install it in
>> linux and run it.
>> However, when I have install it in my Windows' R.
>> I can not 'require' it.
>>> is.element("grt", installed.packages()[,1])
>> [1] TRUE
>>> require(grt)
>> Loading required package: grt
>> Failed with error:  ‘'grt' is not a valid installed package’
>> Is there any pitfall between platforms?
>> And anywhere I could check more detailed error message.
> How did you install it in Windows? If you just copied it from the
> Linux install directory, or if its in a shared directory, it probably
> wont work.
> You need to do a proper R CMD INSTALL on Windows, and for that you'll
> need the assorted dev tools for building R packages on Windows.

For the record: these days you do not need any extra tools unless the 
package contains code that needs compilation, and in the latter case 
we provide the win-builder service.

However, the message indicates no file grt/Meta/package.rds, which 
would be there if the package was copied from Linux.  So we need to 
know exactly what was done.

> Barry
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Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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