Colossus

1.5.1

"Risk Model Regression and Analysis with Complex Non-Linear Models"

0packages depend

4.8Kdownloads / year

89.0%test coverage

13/13checks pass

Overview

About

Maintained by Eric King-GiuntaFirst published 2023-09-2818 releasesCRAN page ↗GitHub ↗

Performs survival analysis using general non-linear models. Risk models can be the sum or product of terms. Each term is the product of exponential/linear functions of covariates. Additionally sub-terms can be defined as a sum of exponential, linear threshold, and step functions. Cox Proportional hazards https://en.wikipedia.org/wiki/Proportional_hazards_model, Poisson https://en.wikipedia.org/wiki/Poisson_regression, and Fine-Gray competing risks https://www.publichealth.columbia.edu/research/population-health-methods/competing-risk-analysis regression are supported. This work was sponsored by NASA Grants 80NSSC19M0161 and 80NSSC23M0129 through a subcontract from the National Council on Radiation Protection and Measurements (NCRP). The computing for this project was performed on the Beocat Research Cluster at Kansas State University, which is funded in part by NSF grants CNS-1006860, EPS-1006860, EPS-0919443, ACI-1440548, CHE-1726332, and NIH P20GM113109.

Install

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

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

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

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("ericgiunta/Colossus")

Development version from ericgiunta/Colossus. Installs pak first if it is not already available.

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-colossus

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

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-Colossus

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-Colossus

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 12.9 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 2.23

89.0%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-04-25
12 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
9 OK · 3 NOTE · 0 WARNING · 2 ERROR · 0 FAILURE
NOTE2026-03-10
11 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 251 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 67% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 95%
Return-value docs: 75%
References docs: 0%

Downloads

4.8K

CRAN downloads in the past year

Rank #6,377 · ~13/day · ~403/mo

Releases R versions

Daily download trend is not available in this view yet.

33830 days

1.6K90 days

4.8K1 year

Compare downloads with other packages →

Also on545 r2u36 autocran

Repository

GitHub ↗ ericgiunta/colossus

2Stars

1Forks

0Open issues

0Open PRs

0Releases

578Commits

2Contributors

License GPL-3.0 · 578 commits · Last activity 2026-07-20

Stars over time

2025-04-17 · 22026-07-07 · 2

Repository practices

Upstream repositoryBeta

6 development-tooling and community-health practices detected across 6 families in the upstream repository

Checks run against github.com/ericgiunta/colossus on 2026-07-19.

Continuous integration (1)

GitHub Actions

Docs source (1)

README.Rmd

Research and citation (1)

codemeta.json

Lint, format, editor (1)

lintr

Show all practices

Coverage (1)

Codecov

Governance and community (1)

Issue templates

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

19 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (13)

Rcpp data.tableparallelstatsutilsrlangmethodscallr stringr processx dplyr tibble lubridate

LinkingTo (3)

Rcpp RcppEigen testthat

Suggests (9)

knitr rmarkdown testthat xml2 pandoc spellingsurvivalsplinesggplot2

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

Code Composition

Other 22,438 (34%)C++ 19,723 (30%)R 17,289 (26%)Vignettes 2,732 (4%)Rd 2,404 (4%)C 564 (1%)CSS 201 (0%)

Code characteristics

Object systems

S325

Cyclomatic complexity: 5.0 median / 122 max
Test cases: 190 / 2.23 per code line
System requirements: 2 external

Test coverage

Line coverage

89%

Expression

89.3%

Tests / Examples

89.0% / 31% ex

Functions

282 32 exported

Complexity

11.8 avg / 122 max

Call network

282 nodes / 449 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

282 functions

Function	Cyclo	Coverage
print.caseconres	5	0%
print.coxres	5	0%
print.poisres	5	0%
Interpret_Output	61	45%
print.coxresbound	5	56%
print.logitres	5	56%

People & History

People (11)

Maintainer (1)

Eric King-Giunta

Author, Maintainer · added in 1.5

Authors (1)

Eric King-Giunta

Author, Maintainer · added in 1.5

Contributors (6)

Contributor

Contributor

Contributor

Contributor

Contributor

Contributor

Kansas State University

Funders (3)

NASA

Funder

NCRP

Funder

NRC

Funder

Listed in earlier versions (1)

Eric Giunta

no longer listed · 0.9.3 to 1.4.10

Package Timeline

18 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
1.5.1Latest
2026-04-23 · current release · diff ↗
1.5
2026-04-17 · diff ↗
1.4.10
2026-02-20 · diff ↗
1.4.9
2026-01-23 · diff ↗
1.4.6
2025-12-17 · diff ↗
1.4.5
2025-12-07 · diff ↗
1.4.3
2025-10-30 · diff ↗
1.3.0
2025-06-05 · diff ↗
R
R 4.5.0 released · 2025-04-11
1.2
2025-02-13 · diff ↗
1.1.4.2
2024-10-21 · diff ↗
unarchivedReturned to CRAN
2024-10-21
archivedRemoved from CRAN
2024-09-23
issues were not corrected in time
1.1.4.1
2024-09-20 · diff ↗
1.1.3.1
2024-09-12 · diff ↗

Show 10 earlier events

1.1.3
2024-09-06 · diff ↗
1.1.1
2024-04-30 · diff ↗
R
R 4.4.0 released · 2024-04-24
1.1.0
2024-04-03 · diff ↗
1.0.1
2024-02-26 · diff ↗
1.0.0
2024-02-20 · diff ↗
unarchivedReturned to CRAN
2024-02-20
archivedRemoved from CRAN
2023-09-30
multiple policy violations including installation failures Undeclared dependence on OpenMP, spammed team member in HTML
0.9.3
2023-09-28
R
R 4.3.0 released · 2023-04-21

Package metadata

First published: 2023-09-28
Total releases: 18 / 3 yrs
License: GPL (>= 3) OSI
Download size: 1.3 MB
Installed size: not tracked yet
With dependencies: not tracked yet

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