我有列的大数据帧(> 4万行)yname1,yname2,yname3该存储串:
yname1 | yname2 | yname3
aaaaaa | bbbaaa | bbaaaa
aaabbb | cccccc | aaaaaa
aaaaaa | aaabbb | dddddd
cccccc | dddddd | eeeeee
现在我想计算所有列中每个字符串的出现总次数.这些应作为附加列添加:
yname1 | yname2 | yname3 | rcount1 | rcount2 | rcount3
aaaaaa | bbbaaa | bbaaaa | 3 | 1 | 1
aaabbb | cccccc | aaaaaa | 2 | 2 | 3
aaaaaa | aaabbb | dddddd | 3 | 2 | 2
cccccc | …