R-cran-bit-1.1.14_2.txz


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Description

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

Property Value
Distribution FreeBSD 12
Repository FreeBSD Ports Quarterly i386
Package filename R-cran-bit-1.1.14_2.txz
Package name R-cran-bit
Package version 1.1.14
Package release 2
Package architecture i386
Package type txz
Category devel
Homepage https://cran.r-project.org/web/packages/bit/
License GPLv2
Maintainer tota@FreeBSD.org
Download size 224.96 KB
Installed size 288.22 KB
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/

Alternatives

Package Version Architecture Repository
R-cran-bit-1.1.14_2.txz 1.1.14 amd64 FreeBSD Ports Latest
R-cran-bit-1.1.14_2.txz 1.1.14 i386 FreeBSD Ports Latest
R-cran-bit-1.1.14_2.txz 1.1.14 amd64 FreeBSD Ports Quarterly
R-cran-bit - - -

Requires

Name Value
R = 3.6.1_2
gcc9 = 9.2.0
libR.so.3.6 -

Download

Type URL
Mirror pkg.freebsd.org
Binary Package R-cran-bit-1.1.14_2.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_3.txz S3 Class for Vectors of 64bit Integers
R-cran-bitops-1.0.6_8.txz Functions for Bitwise operations
R-cran-brew-1.0.6_3.txz Templating Framework for Report Generation
R-cran-broom-0.5.2_1.txz Convert Statistical Analysis Objects into Tidy Data Frames
R-cran-caTools-1.17.1.2_1.txz Tools: moving window statistics, GIF, Base64, ROC AUC, etc
R-cran-carData-3.0.2_2.txz Companion to Applied Regression Data Sets
R-cran-ccgarch-0.2.3_5.txz Conditional Correlation GARCH models
R-cran-cellranger-1.1.0_2.txz Translate Spreadsheet Cell Ranges to Rows and Columns
R-cran-chron-2.3.43_11.txz R package for creating objects which can handle dates and times
R-cran-classInt-0.4.1.txz Choose Univariate Class Intervals
R-cran-cli-1.1.0_1.txz Helpers for Developing Command Line Interfaces
R-cran-clipr-0.7.0.txz Read and Write from the System Clipboard
R-cran-cmprsk-2.2.8_1.txz Subdistribution Analysis of Competing Risks
R-cran-coda-0.19.3.txz Output analysis and diagnostics for MCMC
R-cran-colorspace-1.4.1_1.txz Color Space Manipulation
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