Almost all contents here are written only in Japanese except this page, although English pages will be made in the future. Since all jottings in this site are just for my personal use to save unnecessary time to remind something I forget, the author is not responsible for anything you follow. Please proceed at your own risk.
Furthermore, most of my valuable memorandums have already gone to Rjpwiki (Japanese). On the site I wrote with or without my name. You can find here remains less valuable to other R users.