Rio : 命令行调用R处理一些dataframe

见 serven command  的‍ Rio

查询
< iris.csv Rio -se 'sqldf("select * from df where df.SepalLength > 7.5")' | csvlook

画图
< iris.csv Rio -ge 'g+geom_point(aes(x=SepalLength,y=SepalWidth,colour=Name))' > iris.png‍