R Observatory: Metrics for fect version 2.4.5

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

fect

2.4.5

Fixed Effects Counterfactual Estimators

2packages depend

23.2Kdownloads / year

–test coverage

13/13checks pass

Overview

About

Maintained by Yiqing XuFirst published 2022-10-146 releasesCRAN page ↗GitHub ↗

Provides tools for estimating causal effects in panel data using counterfactual methods, as well as other modern DID estimators. It is designed for causal panel analysis with binary treatments under the parallel trends assumption. The package supports scenarios where treatments can switch on and off and allows for limited carryover effects. It includes several imputation estimators, such as Gsynth (Xu 2017), linear factor models, and the matrix completion method. Detailed methodology is described in Liu, Wang, and Xu (2024) doi:10.48550/arXiv.2107.00856 and Chiu et al. (2025) doi:10.48550/arXiv.2309.15983. Optionally integrates with the "HonestDiDFEct" package for sensitivity analyses compatible with imputation estimators. "HonestDiDFEct" is not on CRAN but can be obtained from https://github.com/lzy318/HonestDiDFEct.

Install

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

install.packages("fect", 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("xuyiqing/fect")

Development version from xuyiqing/fect. 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-fect

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-fect

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-fect

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

Health

CRAN checks

13OK

Slowest check: 9.2 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.48

not tracked

Coverage

100%

Documentation · exports

22

Dependencies · direct

Check history

OK2026-08-05
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-08-01
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-06-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-08
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-04-25
12 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Show 3 earlier snapshots

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

READMENoVignettesNopkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 46%
Documented parameters: 99%
Return-value docs: 93%
References docs: 50%

Downloads

23.2K

CRAN downloads in the past year

Rank #2,415 · ~64/day · ~1.9K/mo

Releases R versions

Daily download trend is not available in this view yet.

2.3K30 days

7.9K90 days

23.2K1 year

Compare downloads with other packages →

Also on742 r2u14 autocran463 conda_forge

Repository

GitHub ↗ xuyiqing/fect

83Stars

29Forks

2Open issues

1Open PRs

5Releases

510Commits

12Contributors

510 commits · Last activity 2026-08-13 · 0% stars, 30d

Stars over time

2025-08-01 · 702026-07-07 · 83

Repository practices

Upstream repositoryBeta

3 development-tooling and community-health practices detected across 3 families in the upstream repository

Checks run against github.com/xuyiqing/fect on 2026-08-16.

Continuous integration (1)

GitHub Actions

Docs source (1)

README.Rmd

Lint, format, editor (1)

RStudio project

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

Development tooling

AI-assisted toolingBeta

Uses AI-assisted development tooling (declared in repo)

Earliest detected marker: claude on 2026-03-12

claude

Most recent: claude on 2026-03-12

Evidence

claude: on 2026-03-12 · evidence A, B, D · sole bot-author seen

How this is detected·Detection ruleset v2 (updated 2026-07-29)

Dependencies

Declared dependencies

27 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.1.0

Imports (22)

Rcpp ggplot2 GGally doParallel doFuture foreach abind (>= 1.4-0)codetoolsMASSgridExtragridfixest doRNG future parallelly mvtnorm dplyr future.apply reshape2 rlang scalessplines

LinkingTo (2)

Rcpp RcppArmadillo

Suggests (7)

panelView testthat did DIDmultiplegtDYN ggrepel HonestDiDFEct withr

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

2direct

0indirect

gsynth nonabsdid

Code & Tests

Datasets

People & History

People (7)

Maintainer (1)

Yiqing Xu

Author, Maintainer

Authors (7)

Yiqing Xu

Author, Maintainer

Shiyun Hu

Author · added in 2.0.5

Rivka Lipkovitz

Author · added in 2.0.5

Licheng Liu

Author

Ziyi Liu

Author

Tianzhu Qin

Author · added in 2.0.5

Ye Wang

Author

Package Timeline

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

2.4.5Latest
2026-05-30 · current release · diff ↗
2.4.1
2026-04-30 · diff ↗
R
R 4.6.0 released · 2026-04-24
2.2.0
2026-03-27 · diff ↗
2.1.0
2026-01-17 · diff ↗
2.0.5
2025-08-25 · diff ↗
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
1.0.0
2022-10-14
R
R 4.2.0 released · 2022-04-22

Package metadata

First published: 2022-10-14
Total releases: 6 / 4 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 4.1.0
Bundled data: 1.1 MB / 10 files
Download size: 2.6 MB
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("fect")

Format

Xu, Y., Hu, S., Lipkovitz, R., Liu, L., Liu, Z., Qin, T., & Wang, Y. (2026). fect: Fixed Effects Counterfactual Estimators (Version 2.4.5) [Computer software]. https://doi.org/10.32614/CRAN.package.fect

This is what citation() produces when a package has no citation file of its own. If it prints something else, use that.

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 fect version 2.4.5 [Data set]. HJJB, LLC. Data release v2026-08-18. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-18, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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