Code for the following publication:
Pellard, Thomas, Robin Ryder & Guillaume Jacques. 2025. The Family Tree model. In Adam Ledgeway, Edith Aldridge, Anne Breitbarth, Katalin É. Kiss, Joseph Salmons & Alexandra Simonenko (eds.), The Wiley Blackwell companion to diachronic linguistics. Wiley Blackwell.
All figures in the chapter can be reproduced using the R code from file FiguresTreeModel.R. The necessary data files are found in the data folder.
Most figures rely on the trees in the file SinoTibetanSubset.nex, which was obtained by subsetting certain languages from the file https://github.com/lingpy/sino-tibetan-paper/blob/master/BeastFiles/sinotibetan-beast-covarion-relaxed-fbd.trees (Sagart, Laurent, Guillaume Jacques, Yunfan Lai, Robin J. Ryder, Valentin Thouzeau, Simon J. Greenhill & Johann-Mattis List. 2019. Dated language phylogenies shed light on the ancestry of Sino-Tibetan. Proceedings of the National Academy of Sciences 116(21). 10317–10322. https://doi.org/10.1073/pnas.1817972116).