R Observatory: Metrics for RTMBdist version 1.1.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

RTMBdist

1.1.0Package record

Distributions Compatible with Automatic Differentiation by 'RTMB'

1packages dependsuggested by 1

5.3Kdownloads / year

63.4%test coverage

13/13flavors OK

Overview

About

Maintained by Jan-Ole FischerCRAN page ↗Website ↗

Extends the functionality of the 'RTMB' https://kaskr.r-universe.dev/RTMB package by providing a collection of non-standard probability distributions compatible with automatic differentiation (AD). While 'RTMB' enables flexible and efficient modelling, including random effects, its built-in support is limited to standard distributions. The package adds additional AD-compatible distributions, broadening the range of models that can be implemented and estimated using 'RTMB'. Automatic differentiation and Laplace approximation are described in Kristensen et al. (2016) doi:10.18637/jss.v070.i05.

Changes in 1.1.0

Added the Johnson SU distribution in both the original parameterisation (djsu(), pjsu(), qjsu(), rjsu()) and the moment parameterisation (djsu2(), pjsu2(), qjsu2(), rjsu2()), a four-parameter distribution on the real line covering a wide range of skewness and kurtosis. In djsu2() the location and scale arguments are exactly the mean and standard deviation. The density and distribution function are both differentiable, so simulation and one-step-ahead residuals are supported. Unlike gamlss.dist, the reparameterisation stays finite for very large tau, where the distribution approaches the normal.
Added references to the primary source for each distribution derived from gamlss.dist, and cross-links between related families. pgenpois() and friends previously had no references at all.
Removed the dependency on gamlss.dist, which is scheduled for archival on CRAN. The quantile and random generation functions of the Box-Cox Cole-Green (qbccg(), rbccg()), Box-Cox *t* (qbct(), rbct()), Box-Cox power exponential (qbcpe(), rbcpe()), power exponential (qpowerexp(), rpowerexp(), qpowerexp2(), rpowerexp2()), Pareto (qpareto(), rpareto()), generalised Poisson (pgenpois(), qgenpois(), rgenpois()) and exponentially modified Gaussian (qexgauss()) distributions are now implemented natively. Results are unchanged except for the fixes below.
Fixed argument recycling in qbccg(), qbct(), qbcpe(), qgenpois() and pgenpois(). Evaluating a single quantile against vectorised parameters previously collapsed the result to length one, and a parameter vector shorter than x silently truncated it. These functions now return one value per recycled argument tuple.
Fixed qbct() and rbct(), which failed with an error when mu, sigma or tau was supplied as a vector.
qpareto() now honours lower.tail, which was previously accepted but ignored.
log.p = TRUE now works in qpareto(), qbct() and qgenpois(). These previously validated p before transforming it back from the log scale, so the argument could not be used.
qexgauss() is substantially more accurate. It inverts pexgauss() with a tighter convergence tolerance, reducing the round-trip error |p(q(p)) - p| from roughly 1e-6 to roughly 1e-14.
pgenpois() no longer falls back to the Poisson distribution for phi < 1e-4 and evaluates the generalised Poisson distribution function across the whole parameter range.
pbetaprime(), pinvchisq() and pinvgamma() are now differentiable, so one-step-ahead residuals via method = "cdf" are available for the beta prime, inverse chi-squared and inverse gamma distributions.
Added the Bell distribution (dbell(), pbell(), qbell(), rbell()) and its mean parameterisation (dbell2(), pbell2(), qbell2(), rbell2()), a one-parameter distribution for overdispersed counts. Log Bell numbers are used throughout and cached, so the density stays finite well past the point at which the Bell numbers themselves overflow double precision. One-step-ahead residuals are supported via method = "cdf".
Added lambertW(), an AD-compatible implementation of the principal branch of the Lambert W function. Derivatives of all orders are exact, so it can be used in models fitted by Laplace approximation.

Show all changes in 1.1.0Hide the rest of the changes in 1.1.0

Added the Conway-Maxwell-binomial distribution (dcombinom(), pcombinom(), qcombinom(), rcombinom()), a binomial generalisation with an additional dispersion parameter nu. The density and distribution function are differentiable with respect to x, so one-step-ahead residuals are supported.

From NEWS.md in the release

Install

R (CRAN)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("RTMBdist", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-rtmbdist

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-RTMBdist

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-RTMBdist

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 7.5 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK7 OK2026-07-23
ERROR11 OK, 1 ERROR2026-04-25
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.1.0

READMEYes · 223 wordsVignettesYes · 3 · dynamicNEWSYes · 100% structured · mentions 1.1.0Citation fileNoWebsiteYes · pkgdown

Description cites a JSS article

Help pages: 79
Examples that run: 100%79 run in a plain check
Exported functions with examples: 100%
Documented parameters: 66%
Return-value docs: 100%
Help pages citing references: 16%

Vignettes (3)

How these are measured

Downloads

5.3K

CRAN downloads in the past year

Rank #6,133 · ~15/day · ~442/mo

Releases R versions

Daily download trend is not available in this view yet.

44230 days

1.3K90 days

5.3K1 year

Compare downloads with other packages →

Also on177 r2u3 autocran

How downloads are counted

Repository

janolefi/rtmbdist ↗Account: janolefi

4Stars

1Forks

2Open issues

0Open PRs

0Releases

364Commits

2Commit identities

364 commits · Last activity 2026-09-26 · 0% stars, 30d · Default branch at 1.2.0, ahead of CRAN 1.1.0 (checked 2026-10-18)

Responsiveness

How these are sampled

PRs merged (all time): 100%
Median days to close, 50 most recently updated closed issues: 11
Median days to close, 50 most recently updated closed PRs: 49

Issues over time

2026-03-06 · 12026-07-07 · 2

How these are measured

PracticesBeta

9 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/janolefi/rtmbdist on 2026-10-18.

Continuous integration (2)

GitHub ActionsR CMD check workflow

The R CMD check workflow runs on Linux, macOS and Windows, and on R-devel

Docs source (4)

README.Rmdpkgdown

GitHub Pages site last deployed 2026-09-26 · The repository has a site deploy workflow

pkgdown site last built 2026-09-26

CRAN release process (2)

cran-comments.mdCRAN-SUBMISSION

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v3 (2026-09-26)

AI coding toolsBeta

This repository shows signs of AI coding tools.

Claude Codefirst seen 2026-05-11
Seen in the repository: .claude
Named in .Rbuildignore: .claude
Commits: at least 10 crediting it in the message

Models named in its commits

Claude Opus 5.510 commits · Sep 2026

Counts are commits, not lines of code. Commits by a tool's accounts count once across all of its accounts. Commits crediting it are the largest count among its credit lines, a minimum.How this is detected·Detection ruleset v4 (updated 2026-09-27)

Dependencies

Declared dependencies

12 external dependencies (excludes base and recommended)

Installing RTMBdist adds 17 packages (13 with compiled code, 10.0 MB of source tarballs). Heaviest: Rcpp 1.8 MB, RcppEigen 1.7 MB, mvtnorm 1.0 MB.

Depends (2)

R >= 3.5.0RTMB

Imports (6)

statsMatrixcircular sn statmod movMF

LinkingTo (0)

none

Suggests (7)

knitr rmarkdown testthat TMB gamlss.data mvtnorm LaMa

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

0indirect

Imports 1

Suggested by 1

Depends, Imports or LinkingTo, most downloaded first

LaMa

Suggests, most downloaded first

multiSA

How these are counted

Code & Tests

People & History

People (1)

Jan-Ole Fischer

Author, Maintainer · added in 1.0.1

Maintainer since 0.1.0 (2025)

Listed in earlier versions (1)

Jan-Ole Koslik

no longer listed · 0.1.0 to 1.0.0

Releases (9)

Pick two releases to compare their code metrics.

1.1.0Latest
record
2026-09-06 · current release · diff ↗ ·
added 17 exports
dbell, dbell2, djsu, djsu2, lambertW, pbell, pbell2, pjsu, pjsu2, qbell, qbell2, qjsu, qjsu2, rbell, rbell2, rjsu, rjsu2
1.0.6
record
2026-08-21 · diff ↗ ·
added 5 exports
dcombinom, laplace_check, pcombinom, qcombinom, rcombinom
unarchivedReturned to CRAN
2026-07-22
1.0.5
record
2026-07-22 · diff ↗ ·
removed 1 export
pnbinom

added 8 exports
dgompertz, dllogis, pgompertz, pllogis, qgompertz, qllogis, rgompertz, rllogis
archivedRemoved from CRAN
2026-07-15
issues were not corrected in time
R
R 4.6.0 released · 2026-04-24
1.0.4
record
2026-04-09 · diff ↗ ·
added 2 exports
mcreport, rgmrf
1.0.3
record
2026-04-01 · diff ↗ ·
added 3 exports
dziweibull, pziweibull, rziweibull
1.0.2
record
2026-03-16 · diff ↗ ·
added 22 exports
dbetaprime, dgengamma, dinvchisq, dinvgamma, dkumar, dskellam, pbetaprime, pgengamma, pinvchisq, pinvgamma, pkumar, qbetaprime, qgengamma, qinvchisq, qinvgamma, qkumar, rbetaprime, rgengamma, rinvchisq, rinvgamma, rkumar, rskellam
1.0.1
record
2026-02-24 · diff ↗
1.0.0
record
2026-01-13 · diff ↗ ·
added 20 exports
Cclayton, Cfrank, Cgumbel, abs_smooth, cgmrf, cmvgauss, ddcopula, dmvcopula, dpgweibull, dskewt2, dwishart, hpgweibull, ppgweibull, pskewt2, qpgweibull, qskewt2, rpgweibull, rskewt2, rwishart, spgweibull
0.1.0
record
2025-10-07
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2025-10-07
Total releases: 9 / 1 yrs
License: GPL-2 | GPL-3 OSI · relicensed from MIT + file LICENSE in 1.1.0
Minimum R: ≥ 3.5.0
Download size: 402 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("RTMBdist")

Format

Fischer, J. (2026). RTMBdist: Distributions Compatible with Automatic Differentiation by 'RTMB' (Version 1.1.0) [Computer software]. https://doi.org/10.32614/CRAN.package.RTMBdist

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for RTMBdist version 1.1.0 [Data set]. HJJB, LLC. Data release v2026-10-21. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-21, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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