Available data and R code for the competitive ability of Erigeron canadensis

Conyza canadensis). The files include raw experimental data from a large-scale glasshouse experiment testing competitive ability under interspecific and intraspecific competition across mesic and dry conditions, as well as derived indices of competitive tolerance and suppression.

Additional files provide detailed population information (including climatic and community covariates), a genetic co-ancestry matrix derived from SNP data, and a modified version of the pedigreemm function. The main R script integrates these resources, guiding the user step by step through data preprocessing, model fitting, hypothesis testing and figure creation. In addition, Source Data file contains all data used to create the Extended Data Figures presented in the manuscript.