R Observatory: Metrics for fect version 2.4.5

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

fect

2.4.5Package record

Fixed Effects Counterfactual Estimators

1packages dependsuggested by 1

25.8Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Yiqing XuCRAN page ↗GitHub ↗Website ↗Issues ↗

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. 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-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). 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: 9.2 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-09-09
ERROR12 OK, 1 ERROR2026-09-04
OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK13 OK2026-06-09

Show 5 earlier changesHide 5 earlier changes

ERROR12 OK, 1 ERROR2026-06-08
OK12 OK2026-04-25
NOTE11 OK, 3 NOTE2026-04-22
ERROR10 OK, 3 NOTE, 1 ERROR2026-04-18
NOTE11 OK, 3 NOTE2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 2.4.5

README· In the repository, left out of the releaseVignettes· In the repository, left out of the releaseNEWS· In the repository, left out of the releaseCitation fileNoWebsiteYes

Help pages: 28includes a package overview page
Examples that run: 46%6 run in a plain check · 7 never run
Exported functions with examples: 79%
Documented parameters: 99%
Return-value docs: 93%
Help pages citing references: 50%

How these are measured

Downloads

25.8K

CRAN downloads in the past year

Rank #2,440 · ~71/day · ~2.1K/mo

Releases R versions

Daily download trend is not available in this view yet.

2K30 days

6.6K90 days

25.8K1 year

Compare downloads with other packages →

Also on749 r2u3 autocran742 conda_forge

How downloads are counted

Repository

xuyiqing/fect ↗Account: xuyiqing

85Stars

30Forks

0Open issues

2Open PRs

5Releases

510Commits

12Commit identities

510 commits · Last activity 2026-05-30 · +2.4% stars, 30d

Responsiveness

How these are sampled

PRs merged (all time): 87%
Median days to close, 50 most recently updated closed issues: 1
Median days to close, 50 most recently updated closed PRs: 0

Stars over time

2025-10-13 · 732026-09-28 · 85

How these are measured

PracticesBeta

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

Checks run against github.com/xuyiqing/fect on 2026-10-11.

Continuous integration (2)

GitHub ActionsR CMD check workflow

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

Docs source (1)

README.Rmd

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 2026-03-12
Named in .gitignore: .claude
Pull request it wrote: opened by a project member
Commits: 48 by its own account · at least 84 crediting it in the message

Models named in its commits

Claude Opus 4.651 commits · Mar 2026
Claude Opus 4.725 commits · Apr 2026
Claude Sonnet 4.68 commits · Apr 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

27 external dependencies (excludes base and recommended)

Installing fect adds 63 packages (25 with compiled code, 52 MB of source tarballs). Heaviest: stringi 11 MB, ggplot2 6.0 MB, fixest 4.8 MB.

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

1direct

0indirect

Imports 1

Suggested by 1

Depends, Imports or LinkingTo, most downloaded first

gsynth

Suggests, most downloaded first

nonabsdid

How these are counted

Code & Tests

Datasets

People & History

People (7)

Yiqing Xu

Author, Maintainer since 2.0.5 (2025)

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

Previously maintained by Ziyi Liu (1.0.0).

Releases (6)

Pick two releases to compare their code metrics.

2.4.5Latest
record
2026-05-30 · current release · diff ↗
2.4.1
record
2026-04-30 · diff ↗ ·
added 3 exports
r.cv.rolling, imputed_outcomes, estimand
R
R 4.6.0 released · 2026-04-24
2.2.0
record
2026-03-27 · diff ↗ ·
added 3 exports
fect_mspe, fect_iden, att.cumu
2.1.0
record
2026-01-17 · diff ↗
2.0.5
record
2025-08-25 · diff ↗ ·
added 5 exports
esplot, effect, plot.fect, did_wrapper, fect_sens
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
record
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

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 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 fect version 2.4.5 [Data set]. HJJB, LLC. Data release v2026-10-18. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-18, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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