1
尽管复杂的标题应用分类,给一个变量,我想做的事情很简单:试图在一个数据帧中的另一个数据帧
如果我有两个dataframes:
d <- data.frame(V1 = c("a","b","c","d"), V2 = c("P", "M", "M", "P"))
j <- data.frame(V3 = c("d","b","b","c","d","c", "a"))
和我要插入另一列到数据帧Ĵ,称为V4其分配同一分类中的d,即最终的数据框的样子:
j
V3 V4
d P
b M
b M
c M
d P
c M
a P
太感谢你了! – demsav