R Observatory: Metrics for LAM version 0.7-22

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

LAM

0.7-22Package record

Some Latent Variable Models

1packages depend

4Kdownloads / year

–test coverage

11/13flavors OK

Overview

About

Maintained by Alexander RobitzschCRAN page ↗GitHub ↗Website ↗

Includes some procedures for latent variable modeling with a particular focus on multilevel data. The 'LAM' package contains mean and covariance structure modelling for multivariate normally distributed data (mlnormal(); Longford, 1987; doi:10.1093/biomet/74.4.817), a general Metropolis-Hastings algorithm (amh(); Roberts & Rosenthal, 2001, doi:10.1214/ss/1015346320) and penalized maximum likelihood estimation (pmle(); Cole, Chu & Greenland, 2014; doi:10.1093/aje/kwt245).

Install

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

install.packages("LAM", 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("alexanderrobitzsch/LAM")

Development version from alexanderrobitzsch/LAM. 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-lam

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-LAM

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-LAM

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

2NOTE11OK

Check messages

NOTECRAN incoming feasibilityr-devel-linux-x86_64-debian-clang, r-devel-linux-x86_64-debian-gcc

Maintainer: ‘Alexander Robitzsch <robitzsch@ipn.uni-kiel.de>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: person(given = "Alexander",
                    family = "Robitzsch",
                    role = c("aut", "cre"),
                    email = "robitzsch@ipn.uni-kiel.de")
as necessary.

CRAN check page ↗

Slowest check: 3.5 min · r-devel-windows-x86_64

Status changes

NOTE11 OK, 2 NOTE2026-05-11
WARNING11 OK, 1 NOTE, 1 WARNING2026-05-10
NOTE12 OK, 2 NOTE2026-04-22
ERROR11 OK, 2 NOTE, 1 ERROR2026-04-18
NOTE12 OK, 2 NOTE2026-03-30

Show 2 earlier changesHide 2 earlier changes

ERROR11 OK, 2 NOTE, 1 ERROR2026-03-28
NOTE12 OK, 2 NOTE2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.7-22

READMEYes · 135 wordsVignettesNoNEWSYes · 0% structuredCitation fileYes · computed when R runs itWebsiteYes

Help pages: 7includes a package overview page
Examples that run: 33%2 run in a plain check · 3 never run · 1 hold no code
Exported functions with examples: 100%
Documented parameters: 98%
Return-value docs: 100%
Help pages citing references: 100%

How these are measured

Downloads

4K

CRAN downloads in the past year

Rank #8,986 · ~11/day · ~335/mo

Releases R versions

Daily download trend is not available in this view yet.

46430 days

1.1K90 days

4K1 year

Compare downloads with other packages →

Also on373 r2u5 autocran82 c2d4u

How downloads are counted

Repository

alexanderrobitzsch/lam ↗Account: alexanderrobitzsch

7Stars

3Forks

0Open issues

0Open PRs

13Releases

31Commits

2Commit identities

structural-equation-modelingmultilevel-models

31 commits · Last activity 2024-07-15 · 0% stars, 30d · Default branch at 0.8-1, ahead of CRAN 0.7-22 (checked 2026-10-18)

Responsiveness

not measured

Stars over time

2025-02-26 · 62026-07-07 · 7

How these are measured

PracticesBeta

2 development-tooling and community-health practices detected across 2 families in the upstream repository

Checks run against github.com/alexanderrobitzsch/lam on 2026-10-18.

Docs source (1)

GitHub Pages site last deployed 2024-07-15

Git structural (1)

.gitattributes

How this is detected·Detection ruleset v3 (2026-09-26)

Dependencies

Declared dependencies

9 external dependencies (excludes base and recommended)

Installing LAM adds 10 packages (8 with compiled code, 11 MB of source tarballs). Heaviest: sirt 5.5 MB, Rcpp 1.8 MB, CDM 1.1 MB.

Depends (1)

R >= 3.1

Imports (6)

CDMgraphicsRcpp sirtstatsutils

LinkingTo (2)

Rcpp RcppArmadillo

Suggests (5)

coda expmMASSnumDeriv TAM

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

0indirect

Imports 1

Depends, Imports or LinkingTo, most downloaded first

STARTS

How these are counted

Code & Tests

Datasets

People & History

People (from the free-text Author field) (1)

Alexander Robitzsch

Author, Maintainer since 0.0-17 (2017)

Releases (8)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
0.7-22Latest
record
2024-07-15 · current release · diff ↗
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
unarchivedReturned to CRAN
2022-05-18
0.6-19
record
2022-05-18 · diff ↗
archivedRemoved from CRAN
2022-05-12
requires archived package 'CDM'
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
0.5-15
record
2020-05-09 · diff ↗
R
R 4.0.0 released · 2020-04-24
0.4-17
record
2019-05-06 · diff ↗ ·
added 1 export
clpm_to_ctm
R
R 3.6.0 released · 2019-04-26
0.3-48
record
2018-06-07 · diff ↗
R
R 3.5.0 released · 2018-04-23

Show 4 earlier eventsHide 4 earlier events

0.2-9
record
2018-03-20 · diff ↗ ·
added 2 exports
loglike_mvnorm_NA_pattern, suff_stat_NA_pattern
0.1-22
record
2017-11-24 · diff ↗
0.0-17
record
2017-05-11
R
R 3.4.0 released · 2017-04-21

Package metadata

First published: 2017-05-11
Total releases: 8 / 9 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 3.1
Bundled data: 1.6 KB / 2 files
Download size: 67 KB

Appears in task views

Psychometric Models and Methods

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("LAM")

The package provides a citation file that builds its entry when R runs it. Run citation() to see it.

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 LAM version 0.7-22 [Data set]. HJJB, LLC. Data release v2026-10-21. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-21, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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