RstudioでRパッケージを作ってみる 1 ～自作関数を実行～ ref: http://qiita.com/Dixhom/items/918f18ca22150e43c662

file0.r

require(ggplot2)
library(dplyr)

file1.r

hello <- function() {
  # Hello world を10回表示
  for(i in 1:10){
    print("Hello, world!")
  }
}

file2.r

> hello()
[1] "Hello, world!"
[1] "Hello, world!"
[1] "Hello, world!"
[1] "Hello, world!"
[1] "Hello, world!"
[1] "Hello, world!"
[1] "Hello, world!"
[1] "Hello, world!"
[1] "Hello, world!"
[1] "Hello, world!"