morphErr: Measurement Error Models for Morphometric Data

Morphometric data collected on animal populations can be subject to measurement error, which leads to biased estimators using line-fitting techniques such as linear regression and reduced major axis. The models implemented in this package were described by Stevenson, Smit, and Setyawan (2026) <doi:10.1214/26-AOAS2164>. They explicitly accommodate measurement error, allow for multivariate data, estimate relationships between dimensions, allow missing data, and provide tests for isometric relationships between dimensions. Morphometric data of the reef manta ray, collected in Raja Ampat, Indonesia, are included.

Version: 1.0.0
Depends: R (≥ 3.5.0)
Imports: graphics, grDevices, lmeInfo, Matrix, msm, mvtnorm, nlme, parallel, pbapply, stats, utils
Suggests: testthat (≥ 3.0.0)
Published: 2026-08-30
DOI: 10.32614/CRAN.package.morphErr (may not be active yet)
Author: Ben C. Stevenson [aut, cre, cph], Elizabeth Smit [aut]
Maintainer: Ben C. Stevenson <ben.stevenson at st-andrews.ac.uk>
BugReports: https://github.com/elismit01/morphErr/issues
License: MIT + file LICENSE
URL: https://github.com/elismit01/morphErr
NeedsCompilation: no
Materials: README, NEWS
CRAN checks: morphErr results

Documentation:

Reference manual: morphErr.html , morphErr.pdf

Downloads:

Package source: morphErr_1.0.0.tar.gz
Windows binaries: r-devel: not available, r-release: not available, r-oldrel: not available
macOS binaries: r-release (arm64): morphErr_1.0.0.tgz, r-oldrel (arm64): not available, r-release (x86_64): not available, r-oldrel (x86_64): not available

Linking:

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