R -> 创建具有重复值的数据集

Question

我得到了解决以下问题的方法：

create a dataset holding the Turnover (runif 500;1000) integer values for your 4 Sales representatives for the last 4 years each salesperson selling 4 different products (Mars, Snickers, Bounty, Milkeyway); additioanlly add a column with the integer CostofSales (runif 50;150) finally calculate the Earnings in an own column. Combine all values into a dataframe

所以我做到了：

Years <- rep(c(2021:2018),16)
Years

Sales <- rep(c("Chris","Lucas","Cara","Bia"),16)
View(Sales)                                                                                             

Product <- rep(c("Mars","Snickers","Bounty","Milkway"),16)
Product

Turnover <- c(runif(64,500,1000))
Turnover

df <- data.frame(Years,Sales,Product,Turnover)
View(df)

但是 'dataframe' 搞砸了:

谁能帮帮我？谢谢

Answer 1

也许这就是您想要的

Years <- rep(c(2021:2018), each=16)
Sales <- rep(rep(c("Chris","Lucas","Cara","Bia"), each=4),  4)
Product <- rep(c("Mars",  "Snickers", "Bounty", "Milkway"), 16)
Turnover <- runif(64, 500, 1000)

df <- data.frame(Years,Sales,Product,Turnover)
df[c(4, 8, 12, 16, 20, 24, 28, 32, 36), ]
#    Years Sales Product Turnover
# 4   2021 Chris Milkway 964.8695
# 8   2021 Lucas Milkway 799.1933
# 12  2021  Cara Milkway 613.6976
# 16  2021   Bia Milkway 970.3118
# 20  2020 Chris Milkway 598.2047
# 24  2020 Lucas Milkway 951.0657
# 28  2020  Cara Milkway 537.1925
# 32  2020   Bia Milkway 720.0880
# 36  2019 Chris Milkway 759.2236

R -> 创建具有重复值的数据集

R -> creating data set with repetitive values

r

dataset