Paketti: r-cran-bit (1.1-14-1 ja muut)
Links for r-cran-bit
Debian-palvelut:
Imuroi lähdekoodipaketti r-cran-bit:
Ylläpitäjät:
External Resources:
- Kotisivu [cran.r-project.org]
Samankaltaisia paketteja:
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).
Muut pakettiin r-cran-bit liittyvät paketit
|
|
|
|
-
- dep: libc6 (>= 2.1.3) [i386]
- GNU-C-kirjasto: jaetut kirjastot
myös näennäispaketti, jonka toteuttaa libc6-udeb
- dep: libc6 (>= 2.17) [arm64]
- dep: libc6 (>= 2.2.5) [amd64]
- dep: libc6 (>= 2.4) [armhf]
-
- dep: r-api-3.5
- näennäispaketti, jonka toteuttaa r-base-core
-
- dep: r-base-core (>= 3.5.0-4) [arm64, i386]
- GNU R core of statistical computation and graphics system
- dep: r-base-core (>= 3.5.0-5) [amd64, armhf]
Imuroi r-cran-bit
Arkkitehtuuri | Versio | Paketin koko | Koko asennettuna | Tiedostot |
---|---|---|---|---|
amd64 | 1.1-14-1+b1 | 216.0 kt | 305.0 kt | [tiedostoluettelo] |
arm64 | 1.1-14-1+b1 | 213.5 kt | 301.0 kt | [tiedostoluettelo] |
armhf | 1.1-14-1+b1 | 213.6 kt | 296.0 kt | [tiedostoluettelo] |
i386 | 1.1-14-1+b1 | 216.5 kt | 304.0 kt | [tiedostoluettelo] |