2018-10-25 r で括弧を描く:pBrackets R pBrackets パッケージで簡単に括弧を描けるhttps://cran.r-project.org/web/packages/pBrackets/pBrackets.pdf例 https://cran.r-project.org/web/packages/pBrackets/vignettes/pBrackets_vignette.pdf