Question

对于以下两个data.frame s

Set1 <- data.frame(Object=c("one","two","three","four"),
                   Age=c(1,1,1,1),
                   Value=c(1,2,4,8))
Set2 <- data.frame(Object=c("one","two","three","five"),
                   Age=c(2,2,2,2),
                   Value=c(4,8,2,7))

我想在Set1和Set2中获取重复的条目（根据“对象”一栏），即

  Object Age Value
1    one   1     1
2    two   1     2
3  three   1     4
4    one   2     4
5    two   2     8
6  three   2     2

我将如何做到这一点？

Answer 1

> x = intersect(Set1$Object, Set2$Object)
> rbind(Set1[Set1$Object %in% x,], Set2[Set2$Object %in% x,])
  Object Age Value
1    one   1     1
2    two   1     2
3  three   1     4
4    one   2     4
5    two   2     8
6  three   2     2

Answer 2

由于我不确定我是否理解你的问题（你的例子不符合任何问题），我只能建议提示：

设置＆lt; - rbind（Set1，Set2）

rv＆lt; - 设置[设置[，“对象”]％％重复（设置[，“对象”]），]

从列中相似的两个data.frames中提取行？

2 个答案: