R Observatory: Metrics for Synth version 1.1-10

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

CRAN requires the check problems on this package to be fixed before 2026-08-21 or it will be archived.

Synth

1.1-10

Synthetic Control Group Method for Comparative Case Studies

3packages depend

39.1Kdownloads / year

66.2%test coverage

13/13checks pass

Overview

About

Maintained by Jens HainmuellerFirst published 2007-02-1116 releasesCRAN page ↗

Implements the synthetic control group method for comparative case studies as described in Abadie and Gardeazabal (2003) and Abadie, Diamond, and Hainmueller (2010, 2011, 2014). The synthetic control method allows for effect estimation in settings where a single unit (a state, country, firm, etc.) is exposed to an event or intervention. It provides a data-driven procedure to construct synthetic control units based on a weighted combination of comparison units that approximates the characteristics of the unit that is exposed to the intervention. A combination of comparison units often provides a better comparison for the unit exposed to the intervention than any comparison unit alone.

Install

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

install.packages("Synth", 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-synth

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-Synth

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-Synth

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

Health

CRAN checks

13OK

Slowest check: 8.4 min · r-devel-windows-x86_64

Code health

Yes

Tests · ratio 0.18

66.2%

Coverage · measured lines

100%

Documentation · exports

3

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
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesNopkgdown siteNoNEWSYes · 67% structuredCode of conductNoContributing guideNo

Examples that run: 50%
Documented parameters: 100%
Return-value docs: 100%
References docs: 70%

Downloads

39.1K

CRAN downloads in the past year

Rank #2,616 · ~107/day · ~3.3K/mo

Releases R versions

Daily download trend is not available in this view yet.

2.1K30 days

7.2K90 days

39.1K1 year

Compare downloads with other packages →

Also on219 r2u13 autocran56 c2d4u

Dependencies

Declared dependencies

4 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (3)

kernlab optimx rgenoud

LinkingTo (0)

none

Suggests (1)

testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

3direct

0indirect

SCtools MSCMT sccic

Code & Tests

Datasets

People & History

People (2)

Maintainer (1)

Jens Hainmueller

Author, Maintainer

Authors (2)

Jens Hainmueller

Author, Maintainer

Alexis Diamond

Author

Package Timeline

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

1.1-10Latest
2026-04-29 · current release · diff ↗
R
R 4.6.0 released · 2026-04-24
1.1-9
2025-10-19 · diff ↗
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
1.1-8
2023-06-02 · diff ↗
unarchivedReturned to CRAN
2023-06-02
R
R 4.3.0 released · 2023-04-21
archivedRemoved from CRAN
2023-04-14
requires archived package 'LowRankQP'
1.1-6
2022-06-09 · diff ↗
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
R
R 3.4.0 released · 2017-04-21

Show 28 earlier events

R
R 3.3.0 released · 2016-05-03
R
R 3.2.0 released · 2015-04-16
R
R 3.1.0 released · 2014-04-10
1.1-5
2014-01-27 · diff ↗
1.1-4
2013-08-12 · diff ↗
R
R 3.0.0 released · 2013-04-03
1.1-3
2012-10-24 · diff ↗
R
R 2.15.0 released · 2012-03-30
1.1-2
2011-12-27 · diff ↗
R
R 2.14.0 released · 2011-10-31
1.1-1
2011-09-28 · diff ↗
0.1-9
2011-04-27 · diff ↗
R
R 2.13.0 released · 2011-04-13
0.1-8
2011-03-15 · diff ↗
R
R 2.12.0 released · 2010-10-15
R
R 2.11.0 released · 2010-04-22
R
R 2.10.0 released · 2009-10-26
R
R 2.9.0 released · 2009-04-17
R
R 2.8.0 released · 2008-10-20
0.1-6
2008-09-11 · diff ↗
R
R 2.7.0 released · 2008-04-22
0.1-5
2007-12-19 · diff ↗
0.1-4
2007-10-18 · diff ↗
R
R 2.6.0 released · 2007-10-03
0.1-3
2007-09-23 · diff ↗
R
R 2.5.0 released · 2007-04-24
0.1-2
2007-02-11
R
R 2.4.0 released · 2006-10-03

Package metadata

First published: 2007-02-11
Total releases: 16 / 19 yrs
License: GPL (>= 2) OSI
Bundled data: 39 KB / 4 files
Download size: 73 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Causal Inference Econometrics

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("Synth")

Format

Hainmueller, J., & Diamond, A. (2026). Synth: Synthetic Control Group Method for Comparative Case Studies (Version 1.1-10) [Computer software]. https://doi.org/10.32614/CRAN.package.Synth

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 Synth version 1.1-10 [Data set]. HJJB, LLC. Data release v2026-08-13. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-13, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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