On Aug 16, 2012, at 5:08 PM, steven mosher wrote: > Hi, > > I have two .rda files that I need to include in a package. I've placed > them both in a data directory > after save() the are around 150Kb each. > > When I try to check the package I get the following warning > > Warning: large data file(s) saved inefficiently: > size ASCII compress > zagoskin.rda 137Kb FALSE none > > Note: significantly better compression could be obtained > by using R CMD build --resave-data > old_size new_size compress > modpoll.rda 124Kb 78Kb xz > zagoskin.rda 137Kb 6Kb bzip2 > > Both of these files modpoll.rda and zagoskin.rda have already been > compressed from megabytes down to Kb. > > Also,, the instructions "R CMD build --resave-data" doesnt do anything > that I can see so I must be using it wrong.
R CMD build is how you preferably should be creating your package tar ball, so you simply add the --resave-data argument to your already existing R CMD build call which creates the tar ball from your source directory. So can you elaborate on "doesn't do anything I can see"? In what sense? No output? No compression? Cheers, Simon > Is there a piece of the puzzle I am missing or instructions better than > these: I tried LazyDataCompression and my > data.rdb is 90Kb. > > "Package *tools* has a couple of functions to help with data images: > checkRdaFiles reports on the way the image was saved, and resaveRdaFiles will > re-save with a different type of compression, including choosing the best > type for that particular image. > > Some packages using ŒLazyData‚ will benefit from using a form of > compression other than gzip in the installed lazy-loading database. This > can be selected by the --data-compress option to R CMD INSTALL or by using > the ŒLazyDataCompression‚ field in the DESCRIPTION file. Useful values are > bzip2, xz and the default, gzip. The only way to discover which is best is > to try them all and look at the size of the pkgname/data/Rdata.rdb file." > > [[alternative HTML version deleted]] > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
