1. Thank you everyone for using 'basicTrendline' package, but it was recently removed from the CRAN repository;
2. Now, I recommend you to use our new 'ggtrendline'package instead of 'basicTrendline';
3. Links of 'ggtrendline' package: https://cran.r-project.org/package=ggtrendline and https://github.com/PhDMeiwp/ggtrendline