pack.ffdf stores ffdf data.frames into the given file for easy archiving and movement of data.
The file can be restored using unpack.ffdf. If file ends with ".zip", the package will be zipped
otherwise it will be tar.gz-ed.
Usage
pack.ffdf(file, ...)
Arguments
file
packaged file, zipped or tar.gz.
...
ff objects to be packed
See Also
save.ffdfunpack.ffdf
Examples
iris.ffdf <- as.ffdf(iris)
td <- tempfile()
# save the ffdf into the supplied directory
save.ffdf(iris.ffdf, dir=td)
# what in the directory?
dir(td)
#remove the ffdf from memory
rm("iris.ffdf")
# and reload the stored ffdf
load.ffdf(dir=td)
tf <- paste(tempfile(), ".zip", sep="")
packed <- pack.ffdf(file=tf, iris.ffdf)
#remove the ffdf from memory
rm("iris.ffdf")
# restore the ffdf from the packed ffdf
unpack.ffdf(tf)