我有一个R数据框,如下所示:
name set
1 Mark A
2 Alex A
3 John B
4 Max A
5 June B
6 Park C
7 May C
... ... ...
如何使用R从各个组中生成新的数据框?
输出应为3个单独的数据帧,如下所示:
name set name set name set
1 Mark A 1 John B 1 Park C
2 Alex A 2 June B 2 May C
3 Max A ... ... ... ... ... ...
... ... ...