У меня есть кадр данных, подобный следующему:
names <- c("a", "b", "c","d","e","f", "g","h","i","j")
group_no <- c("A", "B", "C","D","E","D", "C","F","F","C")
amount <- c(10,10,3,6,10,4,6,2,8,1)
data.frame(names, group_no, amount)
Я хочу рассчитать процент одного и того же имени группы.
names <- c("a", "b", "c","d","e","f", "g","h","i","j")
group_no <- c("A", "B", "C","D","E","D", "C","F","F","C")
amount <- c(1,1,0.3,0.6,1,0.4,0.6,0.2,0.8,0.1)
out <- data.frame(names, group_no, amount)
out