Storing huge data in RData format causes problems because of the necessity to load the whole file to the memory in order to access and manipulate objects inside such file; rtape is a simple solution to this problem. The package contains several wrappers of R built-in serialize/unserialize mechanism allowing user to quickly append objects to a tape-like file and later iterate over them requiring only one copy of each stored object to reside in memory a time.
|Author||Miron B. Kursa|
|Date of publication||2012-07-31 16:06:41|
|Maintainer||Miron B. Kursa <M.Kursa@icm.edu.pl>|
guessFileFormat: Automatically pick proper tape file format.
makeFileFormat: Setting tape file format/compression.
rtapeAdd: Add object to the tape.
rtapeAsList: Load the whole tape as a list.
rtapeFilter: Rerecord the tape dropping certain objects.
rtapeLapply: Iterate over tape, gathering results.
rtapeRerecord: Rerecord the tape.
rtape-sub-apply: Iterate over tape, discarding results.