R devel - Feb 2011 - Reading a specific file during "R CMD check"?

Hello, All:


       How can I obtain the location of an example data file in a 
package during "R CMD check"?


       I want to include sample raw data files in a package and have 
them read by a function in the package.  It occurs to me to put such a 
file in "\inst\rawdata" and have examples find the data using
something
like "system.file('rawdata', package='MyPackage')".
However, this will
only work if the desired data are already in a version of 'MyPackage' 
that is already installed.  If I change the data, this will return the 
old data, not the modified.  I've looked at packages RUnit and svUnit, 
but have not spent enough time with either to know if they include a 
solution to this problem.


       Thanks for your help.
       Spencer

-- 
Spencer Graves, PE, PhD
President and Chief Operating Officer
Structure Inspection and Monitoring, Inc.
751 Emerson Ct.
San Jos?, CA 95126
ph:  408-655-4567

Hi Spencer,

I think one of the early phases of R CMD check is R CMD install - it
installs the package into a special location so that it doesn't
override existing installed packages, but still allows function to
work exactly as if they were in an installed package.

Hadley

On Fri, Feb 4, 2011 at 7:57 PM, Spencer Graves
<spencer.graves at structuremonitoring.com> wrote:
> Hello, All:
>
>
> ? ? ?How can I obtain the location of an example data file in a package
> during "R CMD check"?
>
>
> ? ? ?I want to include sample raw data files in a package and have them
read
> by a function in the package. ?It occurs to me to put such a file in
> "\inst\rawdata" and have examples find the data using something
like
> "system.file('rawdata', package='MyPackage')".
However, this will only work
> if the desired data are already in a version of 'MyPackage' that is
already
> installed. ?If I change the data, this will return the old data, not the
> modified. ?I've looked at packages RUnit and svUnit, but have not spent
> enough time with either to know if they include a solution to this problem.
>
>
> ? ? ?Thanks for your help.
> ? ? ?Spencer
>
> --
> Spencer Graves, PE, PhD
> President and Chief Operating Officer
> Structure Inspection and Monitoring, Inc.
> 751 Emerson Ct.
> San Jos?, CA 95126
> ph: ?408-655-4567
>
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>


-- 
Assistant Professor / Dobelman Family Junior Chair
Department of Statistics / Rice University
http://had.co.nz/