R Observatory: Metrics for SCEM version 1.2.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

SCEM

1.2.0Package record

Splitting-Coalescence-Estimation Method

0packages depend

1Kdownloads / year

0.0%test coverage

13/13flavors OK

Overview

About

Maintained by Hannah ChazinCRAN page ↗GitHub ↗Website ↗Issues ↗

We introduce improved methods for statistically assessing birth seasonality and intra-annual variation. The first method we propose is a new idea that uses a nonparametric clustering procedure to group individuals with similar time series data and estimate birth seasonality based on the clusters. One can use the function SCEM() to implement this method. The second method estimates input parameters for use with a previously-developed parametric approach (Tornero et al., 2013). The relevant code for this approach is makeFits_OLS(), while makeFits_initial() is the code to implement the same method but with given initial conditions for two parameters. The latter can be used to show the disadvantage of the existing approach. One can use the function makeFits() to generate parametric birth seasonality estimates using either initialization. Detailed description can be found here: Chazin Hannah, Soudeep Deb, Joshua Falk, and Arun Srinivasan (2019) doi:10.1111/arcm.12432 "New Statistical Approaches to Intra-Individual Isotopic Analysis and Modeling Birth Seasonality in Studies of Herd Animals".

Install

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

install.packages("SCEM", 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("hchazin/SCEM")

Development version from hchazin/SCEM. 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-scem

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-SCEM

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-SCEM

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: 4.3 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK6 OK2026-07-03

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.2.0

README· In the repository, left out of the releaseVignettesYes · 1 · dynamicNEWS· In the repository, left out of the releaseCitation fileYes · cites a publicationWebsiteYes · pkgdown

Help pages: 15
Examples that run: 80%12 run in a plain check · 3 only when donttest examples are enabled (R CMD check --as-cran)
Exported functions with examples: 100%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 40%

Vignettes (1)

SCEM_example HTML

How these are measured

Downloads

1K

CRAN downloads in the past year

Rank #14,267 · ~3/day · ~84/mo

Releases R versions

Daily download trend is not available in this view yet.

33230 days

83090 days

1K1 year

Compare downloads with other packages →

Also on65 r2u5 autocran

How downloads are counted

Repository

hchazin/scem ↗Account: hchazin

0Stars

0Forks

0Open issues

0Open PRs

0Releases

Last activity 2026-06-25

Responsiveness

not measured

How these are measured

PracticesBeta

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

Checks run against github.com/hchazin/scem on 2026-10-18.

Continuous integration (3)

GitHub ActionsR CMD check workflowTravis CI (config file)

The R CMD check workflow runs on macOS

Docs source (3)

README.Rmdpkgdown

GitHub Pages site last deployed 2026-06-25

pkgdown site last built 2026-06-25, before release 1.2.0 (2026-07-02)

CRAN release process (1)

cran-comments.md

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

5 external dependencies (excludes base and recommended)

Installing SCEM adds 1 package (0 with compiled code, 3.0 MB of source tarballs). Heaviest: mathjaxr 3.0 MB.

Depends (1)

R >= 2.10

Imports (2)

statsmathjaxr

LinkingTo (0)

none

Suggests (4)

knitr rmarkdown testthat devtools

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

Datasets

People & History

People (5)

Hannah Chazin

Author, Maintainer since 1.2.0 (2026)

Author

Author

Author

Author

Previously maintained by Kyung Serk Cho (1.0.0 to 1.1.0).

Releases (3)

Pick two releases to compare their code metrics.

unarchivedReturned to CRAN
2026-07-02
1.2.0Latest
record
2026-07-02 · current release · diff ↗
R
R 4.6.0 released · 2026-04-24
archivedRemoved from CRAN
2025-06-17
issues were not corrected despite reminders
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
R
R 4.2.0 released · 2022-04-22
1.1.0
record
2021-09-02 · diff ↗
1.0.0
record
2021-08-06
R
R 4.1.0 released · 2021-05-18

Package metadata

First published: 2021-08-06
Total releases: 3 / 5 yrs
License: GPL-3 OSI
Minimum R: ≥ 2.10
Bundled data: 1.3 KB / 1 file
Download size: 73 KB

Cite

Cite this package

Run in R for the authors' entry:

citation("SCEM")

The package provides a citation file, so citation() returns the authors' own entry.

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 SCEM version 1.2.0 [Data set]. HJJB, LLC. Data release v2026-10-22. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-22, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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