Computations for approximations and alternatives for the 'DPQ' (Density (pdf), Probability (cdf) and Quantile) functions for probability distributions in R. Primary focus is on (central and non-central) beta, gamma and related distributions such as the chi-squared, F, and t. – This is for the use of researchers in these numerical approximation implementations, notably for my own use in order to improve R‘s own pbeta(), qgamma(), ..., etc: {’"dpq"'-functions}. – We plan to complement with 'DPQmpfr' to be suggested later.

Version: | 0.3-5 |

Depends: | R (≥ 3.5.0) |

Imports: | stats, graphics, methods, utils, sfsmisc |

Suggests: | Rmpfr, Matrix, mgcv, scatterplot3d, akima |

Published: | 2019-10-21 |

Author: | Martin Maechler [aut, cre], Morten Welinder [ctb] (pgamma C code, see PR#7307, Jan. 2005), Wolfgang Viechtbauer [ctb] (dtWV(), 2002), Ross Ihaka [ctb] (src/qchisq_appr.c), Marius Hofert [ctb] (lsum(), lssum()), R-core [ctb] (src/{dpq.h, algdiv.c, pnchisq.c}), R Foundation [cph] (src/qchisq-appr.c) |

Maintainer: | Martin Maechler <maechler at stat.math.ethz.ch> |

License: | GPL-2 | GPL-3 [expanded from: GPL (≥ 2)] |

NeedsCompilation: | yes |

Materials: | NEWS |

CRAN checks: | DPQ results |

Reference manual: | DPQ.pdf |

Vignettes: |
Noncentral Chi-Squared Probabilities – Algorithms in \R Computing Beta(a,b) for Large Arguments |

Package source: | DPQ_0.3-5.tar.gz |

Windows binaries: | r-devel: DPQ_0.3-5.zip, r-release: DPQ_0.3-5.zip, r-oldrel: not available |

OS X binaries: | r-release: DPQ_0.3-5.tgz, r-oldrel: not available |

Old sources: | DPQ archive |

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