R-cran-bit - Class for vectors of 1-bit booleans

Property Value
Distribution FreeBSD 10
Repository FreeBSD Ports Latest amd64
Package name R-cran-bit
Package version 1.1.14
Package architecture amd64
Package type txz
Installed size 291.68 KB
Download size 221.95 KB
Official Mirror pkg.freebsd.org
True boolean datatype (no NAs), coercion from and to logicals,
integers and integer subscripts; fast boolean operators and fast
summary statistics. With 'bit' vectors you can store true binary
booleans {FALSE,TRUE} at the expense of 1 bit only, on a 32 bit
architecture this means factor 32 less RAM and ~ factor 32 more
speed on boolean operations. Due to overhead of R calls, actual
speed gain depends on the size of the vector: expect gains for
vectors of size > 10000 elements. Even for one-time boolean operations
it can pay-off to convert to bit, the pay-off is obvious, when such
components are used more than once. Reading from and writing to bit
is approximately as fast as accessing standard logicals - mostly
due to R's time for memory allocation. The package allows to work
with pre-allocated memory for return values by calling .Call()
directly: when evaluating the speed of C-access with pre-allocated
vector memory, coping from bit to logical requires only 70%25 of the
time for copying from logical to logical; and copying from logical
to bit comes at a performance penalty of 150%25. the package now
contains further classes for representing logical selections:
'bitwhich' for very skewed selections and 'ri' for selecting ranges
of values for chunked processing. All three index classes can be
used for subsetting 'ff' objects (ff-2.1-0 and higher).
WWW: https://cran.r-project.org/web/packages/bit/
Categories: devel
Maintainer: tota@FreeBSD.org


Package Version Architecture Repository
R-cran-bit-1.1.14.txz 1.1.14 i386 FreeBSD Ports Quarterly
R-cran-bit-1.1.14.txz 1.1.14 amd64 FreeBSD Ports Quarterly
R-cran-bit-1.1.14.txz 1.1.14 i386 FreeBSD Ports Latest
R-cran-bit - - -


Name Value
R = 3.5.1_1
gcc7 = 7.3.0_5
libR.so.3.5 -


Type URL
Binary Package R-cran-bit-1.1.14.txz
Source Package devel/R-cran-bit

Install Howto

Install R-cran-bit txz package:

# pkg install R-cran-bit

See Also

Package Description
R-cran-bit64-0.9.7_1.txz S3 Class for Vectors of 64bit Integers
R-cran-bitops-1.0.6_6.txz Functions for Bitwise operations
R-cran-brew-1.0.6_1.txz Templating Framework for Report Generation
R-cran-broom-0.5.0.txz Convert Statistical Analysis Objects into Tidy Data Frames
R-cran-caTools- Tools: moving window statistics, GIF, Base64, ROC AUC, etc
R-cran-car-3.0.2.txz Companion to Applied Regression
R-cran-carData-3.0.2.txz Companion to Applied Regression Data Sets
R-cran-caret-6.0.80.txz Classification and Regression Training
R-cran-ccgarch-0.2.3_3.txz Conditional Correlation GARCH models
R-cran-cellranger-1.1.0.txz Translate Spreadsheet Cell Ranges to Rows and Columns
R-cran-chron-2.3.43_9.txz R package for creating objects which can handle dates and times
R-cran-classInt-0.2.3.txz Choose Univariate Class Intervals
R-cran-cli-1.0.1.txz Helpers for Developing Command Line Interfaces
R-cran-cmprsk-2.2.7_2.txz Subdistribution Analysis of Competing Risks
R-cran-coda-0.19.2.txz Output analysis and diagnostics for MCMC