我有一个数据框,如下所示:
+----+----+----+
| V1 | V2 | V3 |
+----+----+----+
| 1 | E | 10 |
| 1 | G | 15 |
| 2 | E | 5 |
| 2 | G | 20 |
| 3 | E | 10 |
| 4 | E | 30 |
| 4 | G | 50 |
| 5 | E | 70 |
| 5 | G |100 |
| 6 | G | 5 |
+----+----+----+
我想将其转换为这种形式。
+-----+-------+-------+
| V1 | E | G |
+-----+-------+-------+
| 1 | 10 | 15 |
| 2 | 5 | 20 |
| 3 | 10 | |
| 4 | 30 | 50 |
| 5 | 70 | 100 |
| 6 | | 5 |
+-----+-------+-------+