R for循环示例
for(i in 1:10){
print(i)
}
for(i in seq(10)){
print(i)
}
a <- list(1,2,4)
for(i in a){
print(i)
}
for (year in c(2010,2011)){
print(paste("The year is", year))
}
参考:https://www.r-bloggers.com/2015/12/how-to-write-the-first-for-loop-in-r/