Paket: r-cran-bit (4.0.5-1)
Links für r-cran-bit
Debian-Ressourcen:
Quellcode-Paket r-cran-bit herunterladen:
Betreuer:
Externe Ressourcen:
- Homepage [cran.r-project.org]
Ähnliche Pakete:
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 Pakete mit Bezug zu r-cran-bit
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- dep: libc6 (>= 2.4)
- GNU-C-Bibliothek: Laufzeitbibliotheken
auch ein virtuelles Paket, bereitgestellt durch libc6-udeb
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- dep: r-api-4.0
- virtuelles Paket, bereitgestellt durch r-base-core
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- dep: r-base-core (>= 4.2.2.20221110-1)
- GNU R - System für statistische Berechnungen und Grafik - Kern
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- sug: r-cran-bit64 (>= 4.0.0)
- GNU R S3 Class for Vectors of 64bit Integers
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- sug: r-cran-ff (>= 4.0.0)
- Memory-Efficient Fast-Access Storage of Large Data
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- sug: r-cran-knitr
- GNU R package for dynamic report generation using Literate Programming
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- sug: r-cran-rmarkdown
- Konvertierung von R-Markdown-Dokumenten in verschiedene Formate
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- sug: r-cran-roxygen2
- in-line documentation for GNU R
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- sug: r-cran-testthat (>= 0.11.0)
- GNU R testsuite
r-cran-bit herunterladen
| Architektur | Paketgröße | Größe (installiert) | Dateien |
|---|---|---|---|
| i386 | 1.044,9 kB | 1.366,0 kB | [Liste der Dateien] |