Pakket: r-cran-bit (4.6.0+dfsg-1 en anderen)

[ Bron: r-cran-bit  ]

GNU R class for vectors of 1-bit booleans

This GNU R package provides bitmapped vectors of booleans (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 one 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% of the time for copying from logical to logical; and copying from logical to bit comes at a performance penalty of 150%. 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).

Andere aan r-cran-bit gerelateerde pakketten

• dep: libc6 (>= 2.16) [x32]

  GNU C Bibliotheek: Gedeelde bibliotheken
  Ook een virtueel pakket geboden door: libc6-udeb

  dep: libc6 (>= 2.17) [arm64, ppc64el]

  dep: libc6 (>= 2.2) [hppa]

  dep: libc6 (>= 2.27) [riscv64]

  dep: libc6 (>= 2.4) [amd64, armel, armhf, i386, m68k, mips64el, ppc64, s390x, sparc64]

  dep: libc6 (>= 2.41) [loong64, sh4]

• dep: libc6.1 (>= 2.1.3) [alpha]

  GNU C Bibliotheek: Gedeelde bibliotheken
  Ook een virtueel pakket geboden door: libc6.1-udeb

  dep: libc6.1 (>= 2.36) [ia64]

• dep: r-api-4.0

  virtueel pakket geboden door r-base-core

• dep: r-base-core (>= 4.2.2.20221110-1) [ia64]

  GNU R core of statistical computation and graphics system

• rec: r-cran-bit64 (>= 4.0.0)

  A S3 Class for Vectors of 64bit Integers

• rec: r-cran-ff (>= 4.0.0)

  Memory-Efficient Fast-Access Storage of Large Data

• rec: r-cran-knitr

  GNU R package for dynamic report generation using Literate Programming

• rec: r-cran-markdown

  GNU R package providing R bindings to the Sundown Markdown rendering library

• rec: r-cran-microbenchmark

  GNU R package for Accurate Timeing Functions

• rec: r-cran-rmarkdown

  convert R markdown documents into a variety of formats

• rec: r-cran-roxygen2

  in-line documentation for GNU R

• rec: r-cran-testthat (>= 3.0.0)

  GNU R testsuite

• sug: r-cran-bit64 (>= 4.0.0)

  A S3 Class for Vectors of 64bit Integers

• sug: r-cran-ff (>= 4.0.0)

  Memory-Efficient Fast-Access Storage of Large Data

• sug: r-cran-knitr

  GNU R package for dynamic report generation using Literate Programming

• sug: r-cran-rmarkdown

  convert R markdown documents into a variety of formats

• sug: r-cran-roxygen2

  in-line documentation for GNU R

• sug: r-cran-testthat (>= 0.11.0)

  GNU R testsuite

r-cran-bit downloaden

Pakket downloaden voor alle beschikbare platforms

Platform	Versie	Pakketgrootte	Geïnstalleerde grootte	Bestanden
alpha (unofficial port)	4.6.0+dfsg-1	440,0 kB	715,0 kB	[overzicht]
amd64	4.6.0+dfsg-1	444,2 kB	700,0 kB	[overzicht]
arm64	4.6.0+dfsg-1	436,7 kB	716,0 kB	[overzicht]
armel	4.6.0+dfsg-1	435,9 kB	714,0 kB	[overzicht]
armhf	4.6.0+dfsg-1	436,1 kB	650,0 kB	[overzicht]
hppa (unofficial port)	4.6.0+dfsg-1+b1	437,3 kB	686,0 kB	[overzicht]
i386	4.6.0+dfsg-1	446,2 kB	706,0 kB	[overzicht]
ia64 (unofficial port)	4.0.5-1	1.048,1 kB	1.468,0 kB	[overzicht]
loong64 (unofficial port)	4.6.0+dfsg-1	439,5 kB	714,0 kB	[overzicht]
m68k (unofficial port)	4.6.0+dfsg-1	435,6 kB	665,0 kB	[overzicht]
mips64el	4.6.0+dfsg-1	439,4 kB	722,0 kB	[overzicht]
ppc64 (unofficial port)	4.6.0+dfsg-1	450,9 kB	782,0 kB	[overzicht]
ppc64el	4.6.0+dfsg-1	450,4 kB	780,0 kB	[overzicht]
riscv64	4.6.0+dfsg-1	441,1 kB	672,0 kB	[overzicht]
s390x	4.6.0+dfsg-1	455,5 kB	739,0 kB	[overzicht]
sh4 (unofficial port)	4.6.0+dfsg-1	442,1 kB	713,0 kB	[overzicht]
sparc64 (unofficial port)	4.6.0+dfsg-1	435,9 kB	1.615,0 kB	[overzicht]
x32 (unofficial port)	4.6.0+dfsg-1	442,0 kB	686,0 kB	[overzicht]