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Overview

About

Maintained by Sebastian KrantzFirst published 2020-03-1957 releasesCRAN page ↗GitHub ↗

A large C/C++-based package for advanced data transformation and statistical computing in R that is extremely fast, class-agnostic, robust, and programmer friendly. Core functionality includes a rich set of S3 generic grouped and weighted statistical functions for vectors, matrices and data frames, which provide efficient low-level vectorizations, OpenMP multithreading, and skip missing values by default. These are integrated with fast grouping and ordering algorithms (also callable from C), and efficient data manipulation functions. The package also provides a flexible and rigorous approach to time series and panel data in R, fast functions for data transformation and common statistical procedures, detailed (grouped, weighted) summary statistics, powerful tools to work with nested data, fast data object conversions, functions for memory efficient R programming, and helpers to effectively deal with variable labels, attributes, and missing data. It seamlessly supports base R objects/classes as well as 'units', 'integer64', 'xts'/ 'zoo', 'tibble', 'grouped_df', 'data.table', 'sf', and 'pseries'/'pdata.frame'. For a concise overview of the package see Krantz (2026) doi:10.18637/jss.v116.i01.

Install

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

install.packages("collapse", 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("fastverse/collapse")

Development version from fastverse/collapse. 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-collapse

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-collapse

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-collapse

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

Health

CRAN checks

13OK

Slowest check: 14.8 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 1.21

75.1%

Coverage · measured lines

90%

Documentation · exports

1

Dependencies · direct

Check history

OK2026-04-25
12 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-04-22
11 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
10 OK · 3 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
NOTE2026-03-10
11 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 85%
Return-value docs: 90%
References docs: 28%

Downloads

559.1K

CRAN downloads in the past year

Rank #535 · ~1.5K/day · ~46.6K/mo

Releases R versions

Daily download trend is not available in this view yet.

39.7K30 days

143K90 days

559.1K1 year

Compare downloads with other packages →

Also on9.7K r2u36 autocran19.1K conda_forge62 c2d4u

Repository

GitHub ↗ fastverse/collapse

705Stars

36Forks

16Open issues

3Open PRs

60Releases

3,529Commits

14Contributors

rcranrstatsstatisticsdata-sciencescientific-computingtime-seriespanel-data

3,529 commits · Last activity 2026-07-16 · +0.7% stars, 30d

Stars over time

2025-06-16 · 6802026-07-14 · 705

Repository practices

Upstream repositoryBeta

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

Checks run against github.com/fastverse/collapse on 2026-07-19.

Continuous integration (1)

GitHub Actions

Research and citation (1)

CITATION.cff

Lint, format, editor (1)

RStudio project

Coverage (1)

Codecov

Show all practices

Governance and community (1)

Issue templates

Git structural (1)

.gitattributes

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

Dependencies

Declared dependencies

24 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.1.0

Imports (1)

Rcpp

LinkingTo (1)

Rcpp

Suggests (22)

fastverse data.table magrittr kit xts zoo plm fixest vars RcppArmadillo RcppEigen tibble dplyr ggplot2 scales microbenchmark testthat covr knitr rmarkdown withr bit64

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

64direct

57indirect

and 16 more packages.

Code & Tests

Code Composition

R 30,386 (37%)C 19,557 (24%)Vignettes 11,529 (14%)C++ 9,867 (12%)Rd 9,711 (12%)

Code characteristics

Object systems

S3390

Cyclomatic complexity: 2.0 median / 108 max
Test cases: 624 / 1.21 per code line

Test coverage

Line coverage

75%

Expression

75.0%

Tests / Examples

75.1% / 49% ex

Functions

1294 322 exported

Complexity

6 avg / 108 max

Call network

1294 nodes / 3312 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

1294 functions

Function	Cyclo	Coverage
GRPN exp	8	0%
GRPid exp	6	0%
as_integer_factor exp	7	0%
copyAttrib exp	1	0%
fHDbetween exp	1	0%
fHDwithin exp	1	0%

Datasets

Bundled datasets · 2

Name	Class	Rows × Cols	Also ships in
GGDC10S	tbl_df/tbl/data.frame	5,027 × 16	–
wlddev	data.frame	13,176 × 13	–

People & History

People (12)

Maintainer (1)

Sebastian Krantz

Author, Maintainer

Authors (1)

Sebastian Krantz

Author, Maintainer

Contributors (9)

R Core Team and contributors worldwide

Contributor

Laurent Berge

Contributor · added in 1.5.0

Alina Cherkas

Contributor · added in 2.1.0

Matt Dowle

Contributor

Dirk Eddelbuettel

Contributor

Morgan Jacob

Contributor · added in 1.7.0

Ivan Krylov

Contributor · added in 2.1.6

Arun Srinivasan

Contributor

Show 1 more contributors

Kevin Tappe

Contributor · added in 1.4.2

Copyright holders (2)

1999-2016 The R Core Team

Copyright holder

Martyn Plummer

Copyright holder

Listed in earlier versions (2)

Simen Gaure

no longer listed · 1.0.0 to 1.4.2

Josh Pasek

no longer listed · 1.5.0 to 1.7.2

Package Timeline

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

2.1.7Latest
2026-05-19 · current release · diff ↗
R
R 4.6.0 released · 2026-04-24
2.1.6
2026-01-11 · diff ↗
2.1.5
2025-11-19 · diff ↗
2.1.4
2025-10-24 · diff ↗
2.1.3
2025-08-18 · diff ↗
2.1.2
2025-05-25 · diff ↗
2.1.1
2025-04-14 · diff ↗
R
R 4.5.0 released · 2025-04-11
2.1.0
2025-03-10 · diff ↗
2.0.19
2025-01-09 · diff ↗
2.0.18
2024-11-23 · diff ↗
2.0.17
2024-11-03 · diff ↗
2.0.16
2024-08-21 · diff ↗
2.0.15
2024-07-08 · diff ↗
2.0.14
2024-05-25 · diff ↗

Show 51 earlier events

R
R 4.4.0 released · 2024-04-24
2.0.13
2024-04-14 · diff ↗
2.0.12
2024-04-01 · diff ↗
2.0.11
2024-03-21 · diff ↗
2.0.10
2024-02-17 · diff ↗
2.0.9
2024-01-11 · diff ↗
2.0.7
2023-12-07 · diff ↗
2.0.6
2023-11-12 · diff ↗
2.0.3
2023-10-18 · diff ↗
2.0.2
2023-10-14 · diff ↗
1.9.6
2023-05-28 · diff ↗
R
R 4.3.0 released · 2023-04-21
1.9.5
2023-04-07 · diff ↗
1.9.4
2023-03-31 · diff ↗
1.9.3
2023-02-27 · diff ↗
1.9.2
2023-01-25 · diff ↗
1.9.0
2023-01-15 · diff ↗
1.8.9
2022-10-07 · diff ↗
1.8.8
2022-08-15 · diff ↗
1.8.6
2022-06-14 · diff ↗
1.8.5
2022-06-13 · diff ↗
1.8.4
2022-06-08 · diff ↗
R
R 4.2.0 released · 2022-04-22
1.7.6
2022-02-11 · diff ↗
1.7.5
2022-02-03 · diff ↗
1.7.3
2022-01-26 · diff ↗
1.7.2
2022-01-23 · diff ↗
1.7.0
2022-01-14 · diff ↗
1.6.5
2021-07-24 · diff ↗
1.6.4
2021-07-13 · diff ↗
1.6.2
2021-07-04 · diff ↗
1.6.0
2021-06-28 · diff ↗
R
R 4.1.0 released · 2021-05-18
1.5.3
2021-03-07 · diff ↗
1.5.2
2021-03-02 · diff ↗
1.5.1
2021-01-12 · diff ↗
1.5.0
2021-01-04 · diff ↗
unarchivedReturned to CRAN
2021-01-04
archivedRemoved from CRAN
2020-12-19
check problems were not corrected in time
1.4.2
2020-11-10 · diff ↗
1.4.1
2020-11-09 · diff ↗
1.4.0
2020-11-01 · diff ↗
1.3.2
2020-09-13 · diff ↗
1.3.1
2020-08-27 · diff ↗
1.3.0
2020-08-11 · diff ↗
1.2.1
2020-05-27 · diff ↗
1.2.0
2020-05-19 · diff ↗
R
R 4.0.0 released · 2020-04-24
1.1.0
2020-04-01 · diff ↗
1.0.0
2020-03-19
R
R 3.6.0 released · 2019-04-26

Package metadata

First published: 2020-03-19
Total releases: 57 / 6 yrs
License: GPL (>= 2) | file LICENSE OSI
Minimum R: ≥ 4.1.0
Bundled data: 571 KB / 2 files
Download size: 1.4 MB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Econometrics Official Statistics & Survey Statistics Time Series Analysis