rtape: Manage and manipulate large collections of R objects stored as tape-like files

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>
License
GPL-2
Version
2.2
URLs

View on CRAN

Man pages

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.

Files in this package

rtape
rtape/MD5
rtape/man
rtape/man/rtapeLapply.Rd
rtape/man/rtapeRerecord.Rd
rtape/man/makeFileFormat.Rd
rtape/man/guessFileFormat.Rd
rtape/man/rtapeAdd.Rd
rtape/man/rtapeAsList.Rd
rtape/man/rtape-sub-apply.Rd
rtape/man/rtapeFilter.Rd
rtape/DESCRIPTION
rtape/R
rtape/R/rtape_apply.R
rtape/R/shared.R
rtape/R/rtapeFilter.R
rtape/R/rtapeAsList.R
rtape/R/rtapeLapply.R
rtape/R/makeFileFormat.R
rtape/R/rtapeRerecord.R
rtape/R/guessFileFormat.R
rtape/R/rtapeAdd.R
rtape/NAMESPACE
rtape/inst
rtape/inst/NEWS