我有一个看起来像这样的数据框
NUM <- c("45", "45", "45", "45", "48", "50", "66", "66", "66", "68")
Type <- c("A", "F", "C", "B", "D", "A", "E", "C", "F", "D")
Points <- c(9.2,60.8,22.9,1012.7,18.7,11.1,67.2,63.1,16.7,58.4)
df1 <- data.frame(NUM,Type,Points)
DF1:
+-----+------+--------+
| NUM | TYPE | Points |
+-----+------+--------+
| 45 | A | 9.2 |
| 45 | F | 60.8 |
| 45 | C | 22.9 |
| 45 | B | 1012.7 |
| 48 | D | 18.7 |
| 50 | A …