## Description

**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

## Alternatives

Package | Version | Architecture | Repository |
---|---|---|---|

R-cran-bit-1.1.14.txz | 1.1.14 | i386 | FreeBSD Ports Latest |

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 Quarterly |

R-cran-bit | - | - | - |

## Requires

Name | Value |
---|---|

R | = 3.5.1_1 |

gcc7 | = 7.3.0_5 |

libR.so.3.5 | - |

## Download

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-1.17.1.1.txz | 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 |

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