RStudio
RStudioCloudで日本語を表示する方法
$ mkdir ~/tmp $ cd ~/tmp $ curl -O -L https://ipafont.ipa.go.jp/IPAfont/IPAGTTC00303.zip $ unzip IPAGTTC00303.zip $ mkdir -p ~/.fonts/ipa $ cp ./IPAGTTC00303/*.ttc ~/.fonts/ipa
https://ziomatrix18.blog.fc2.com/blog-entry-853.html