Exploring Size and Shape with Multivariate Ratio Analysis (MRA)

These guidelines follow from a paper on the analysis of ratios in multivariate morphometry by Baur and Leuenberger (2011). The paper is intended as a companion for those who prefer a more practical approach, for instance taxonomists, who would like to apply the MRA methods. Examples are demonstrated using a dataset of parasitic wasps of the genus Dibrachys (Hymenoptera: Pteromalidae).

In addition, R-scripts are provided, so that the Figs. 2-9 can be reproduced. However, for this it is necessary to also download the Dibrachys dataset (from Peters and Baur 2020), as well as the source files with the MRA functions (from Baur and Leuenberger 2020). For achieving best results, all files should be put in a single folder and R-Studio (or any other IDE) opened by clicking on one of the R-scripts.

All files are available individually and with an own link. For convenience, I have compiled all files also in a ZIP file.

Papers quoted above you may find in the section References of this Zenodo package.

Citation of this package
Baur, Hannes (2020, November 9) Exploring Size and Shape with Multivariate Ratio Analysis (MRA). Zenodo. https://doi.org/10.5281/zenodo.4256704.