[R] position of an element in a vector

Spencer Graves spencer.graves at pdf.com
Thu Feb 13 22:53:02 CET 2003


How about:

 > x <- c(1, 2, 4, 3, 6)
 > (1:length(x))[x==4]
[1] 3

Spencer Graves

Jason Bond wrote:
> Hello.  Sorry for the elementary post.  I've looked through the 
> documentation, but can't seem to find a function which allows one to 
> extract the position of an element within a list...for example the 
> position of the element 4 in the vector c(1,2,4,3,6) is 3.  Thanks much 
> for any help.
> 
>   Jason
> 
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