Manage Massive Matrices with Shared Memory and Memory-Mapped Files

Create, store, access, and manipulate massive matrices. Matrices are allocated to shared memory and may use memory-mapped files. Packages 'biganalytics', 'bigtabulate', 'synchronicity', and 'bigalgebra' provide advanced functionality.

News

NEWS for R package bigmemory

http://www.bigmemory.org

Jay and Mike [email protected]

Jay Emerson [email protected]

Mike Kane [email protected]

Charles Determan [email protected]

2017-11-19 Michael Kane

Re-added functions to assign based on column and row names.

2017-11-08 Michael Kane

Memory leak problem solved.

2016-09-21 Adam Ryczkowski [email protected]

Fixed a bug with handling raw bytes. Now it is possible to use big.matrix to store arbitrary R object (using serialization). If you want to make sure that bigmemory big.matrix handles raw data, add "bigmemory (>=4.5.21)" to the Depends stanza in the Description.

2014-04-15 Mike and Charles [email protected]

Enabled use of Rcpp package to simply code and create smaller barrier to adding additional extensions.
Added new method to big.matrix objects, allocation_size, to easily check the size of the object in memory.
Float type matrices have now been added to enable single precision analytics.

2013-03-09 Jay and Mike [email protected]

We missed a NEWS entry. Windows support is temporarily suspended due to issues with the Boost headers.
We now depend on bigmemory.sri (a trivial dependency relating to our big.matrix descriptors) and new package BH (for Boost headers).

2011-06-29 Jay and Mike [email protected]

Modified deepcopy() with C code (thanks to Zarrar for this)
Added -fpermissive to possibly address a compilation issue in Linux
Added -lm to address a linking problem with math.h
Fixed a problem with reading all 0's in a column in read.big.matrix()
We note that there may be an inconsistency with read.big.matrix() and write.big.matrix() that needs to be addressed.

2010-10-30 Jay [email protected]

Modified configure to handle a Solaris problem.
Added definition of C99FEATURES to isna.hpp; hopefully won't break anything.

2010-05-16 Jay [email protected]

Set proper default value op='AND' for mwhich()

2010-05-08 Jay [email protected]

The configuration process has been streamlined to avoid warnings and allow for support of Sun Studio compiler on Linux.

2010-05-06 Jay and Mike [email protected]

bigmemory >= 2.2.0 is accompanied by sister packages biganalytics and bigtabulate; mutexes (locking) are abstracted to package synchronicity, available now on R-Forge and soon to be uploaded to CRAN. Package bigalgebra is on R-Forge as a beta version while we sort through the range of library configuration options.