Summary: How do I extract the index of the max (or min) of a vector?

[Kim Elmore <Kim.Elmore@noaa.gov>]

Thanks to all who replied. I knew this was easy and that I'm simply 
having a slow day.
Due to a failure to update a shortcut, I couldn't find the functions 
which.max() and which.min() because I was in S-Plus 7, where they are 
not. These appear in S-Plus 8.
However, in previous versions of S-Plus (back to at least 6), it's easy 
enough to do:
for the vector x, which(x == max(x)) works nicely.

Kim Elmore