r - 从命名向量中提取时保持顺序不变

Question

所以如果我有:

>  g<-c(1,5,2,4,6)
> names(g)<-c("josh","daniel","john", "luke", "bill")
> g
  josh daniel   john   luke   bill 
     1      5      2      4      6 
> 
> g[c("john", "daniel", "bill")]
  john daniel   bill 
     2      5      6 

是否可以在不使用排序函数的情况下返回最初在 g 中排序的值，即(daniel then john then bill)？

谢谢!
-乔希

Answer 1

%in%会为你做这件事:

> g[names(g) %in% c("john", "daniel", "bill")]
daniel   john   bill 
     5      2      6