[R] Extracting data from .zip file in WINDOWS version of package

Prof Brian Ripley ripley at stats.ox.ac.uk
Tue Dec 20 20:14:31 CET 2005

On Tue, 20 Dec 2005, Jain, Nitin wrote:

> I am building a R-package for Genetics analysis. The accepted data is in pedigree (.ped) file format.
> To load the data (say CAMP.ped) from "data" directory, I have a function "CAMP.R", which does the job.
> The package builds successfully in Linux (.tar.gz) and the data loads successfully by "data(CAMP)".
> However, when I build the package in WINDOWS, the data directory is zipped, and the command "data(CAMP)"
> gives an error -
> Error in readGenes(gfile = "CAMP.ped",....)
> Genotype file CAMP.ped does not exist.
> While debugging "data(CAMP)", I found that only the file "CAMP.R" is extracted temporarily, and not the file
> "CAMP.ped" - which causes the error.
> Linux version does not face this problem as the data directory is not zipped.

Well, not zipped by default: it can be zipped.

> Could you please suggest a way around for this problem?

You need to read the `Writing R Extensions' manual and set the appropriate 
option in the DESCRIPTION file.  Search for 'ZipData'

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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