R语言中数据框某一列进行分割,变成两列
R语言中数据框某一列进行分割,变成两列 type id pedigree trait1 trait2 trait31 training L0001 f1_X_m1 -1.746103 -0.7855251 -0.3316372 training L0002 f2_X_m1 -1.679248 -1.5694899 -2.5726143 training L0003 f3_X_m1 -2.748920 -0.6086439 -1.1088124 train