从命名向量中提取时保持顺序完整

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 

是否可以返回最初用g命令的值，即（daniel然后john然后bill）没有使用排序函数？

谢谢！ -Josh

Answer 1

%in%会为您执行此操作：

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