# `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). 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.

## Reference

Stevenson, B. C., Smit, E., and Setyawan, E. (2026) Measurement error
models for morphometric data. *Annals of Applied Statistics*, **20**:
945&ndash;962.