R Observatory: Metrics for cem version 1.1.31

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

cem

1.1.31Package record

Coarsened Exact Matching

1packages dependsuggested by 1

44.3Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Stefano M. IacusCRAN page ↗Website ↗

Implementation of the Coarsened Exact Matching algorithm discussed along with its properties in Iacus, King, Porro (2011) DOI:10.1198/jasa.2011.tm09599; Iacus, King, Porro (2012) DOI:10.1093/pan/mpr013 and Iacus, King, Porro (2019) DOI:10.1017/pan.2018.29.

Install

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

install.packages("cem", 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-cem

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-cem

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-cem

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: 2.6 min · r-oldrel-macos-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK14 OK2026-04-10
ERROR13 OK, 1 ERROR2026-04-09
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.1.31

READMEYes · 100 wordsVignettesYes · 1 · dynamicNEWSYes · 33% structuredCitation fileNoWebsiteYes

Help pages: 20
Examples that run: 21%3 run in a plain check · 11 only when donttest examples are enabled (R CMD check --as-cran)
Exported functions with examples: 87%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 90%

Vignettes (1)

Coarsened Exact Matching PDF

How these are measured

Downloads

44.3K

CRAN downloads in the past year

Rank #2,278 · ~121/day · ~3.7K/mo

Releases R versions

Daily download trend is not available in this view yet.

2.6K30 days

7.5K90 days

44.3K1 year

Compare downloads with other packages →

Also on291 r2u17 autocran82 c2d4u

How downloads are counted

Dependencies

Declared dependencies

4 external dependencies (excludes base and recommended)

Installing cem adds 8 packages (5 with compiled code, 5.1 MB of source tarballs). Heaviest: Rcpp 1.8 MB, MatchIt 1.7 MB, rlang 766 KB.

Depends (2)

tcltklattice

Imports (4)

MatchIt combinat randomForestnlme

LinkingTo (0)

none

Suggests (1)

Amelia

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

0indirect

Depends 1

Suggested by 1

Depends, Imports or LinkingTo, most downloaded first

mwa

Suggests, most downloaded first

cobalt

How these are counted

Code & Tests

Datasets

People & History

People (4)

Stefano M. Iacus

Author, Maintainer · added in 1.1.8

Gary King

Author · added in 1.1.8

Richard Nielsen

Author · added in 1.1.27

Giuseppe Porro

Author · added in 1.1.8

Maintainer since 1.1.5 (2013), previously Gary King (1.0.39 to 1.0.142)

Listed in earlier versions (7)

Show 7 peopleHide 7 people

Stefano Iacus Gary King Giuseppe Porro

no longer listed · 1.0.39 to 1.0.142

Gary