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coga (version 1.2.3)

Convolution of Gamma Distributions

Description

Evaluation for density and distribution function of convolution of gamma distributions in R. Two related exact methods and one approximate method are implemented with efficient algorithm and C++ code. A quick guide for choosing correct method and usage of this package is given in package vignette. For the detail of methods used in this package, we refer the user to Mathai(1982), Moschopoulos(1984), Barnabani(2017), Hu et al.(2020).

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Install

install.packages('coga')

Monthly Downloads

335

Version

1.2.3

License

GPL (>= 3.0)

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Maintainer

Chaoran Hu

Last Published

March 7th, 2026

Functions in coga (1.2.3)

dcoga2dim

Convolution of Two Gamma Distributions (Exact Method).
pcoga2dim_diff_shape

Recurrence Identity of Shape Parameter for pcoga2dim
dcoga_approx

Convolution of Gamma distribuitons (Approximation Method)
coga

coga: Convolution of independent Gamma Distributions
dcoga

Convolution of Gamma Distributions (Exact Method).