MicrowearBivaR: a code to create tooth microwear bivariate plots in R

MicrowearBivaR was written to create tooth microwear bivariate plots in R

The data are organised in two Excel spreadsheets, one with the extant ungulate species used to draw the 95% confidence ellipses (ExtantUngulates.xlsx) and one with the data to be plotted (here Example.xlsx).

The dataset should be organised in 3 columns and for each specimen:
- SPID: Sample ID (species, localities, levels, etc)
- Npit: Number of pits
- Nscr: Number of scratches

The code produce a bivariate plot with the 95% ellipses for extant browsers and grazers, and the fossil samples with the standard error. For the extant ungulates, dots and labels for each modern species can be added by removing '#' in two lines of the code.