How to find the index

I think if you use 'order' it will return the indexes of the array, sorted. Then you can get the original index back because the array will not be changed.

Kevin

  Dear R experts,

i have a vector z , i have to do something after z is sorted. how  
can i find the original index, i.e., before sorting, of a certain  
element in the sorted vector  .
  thanks in advance

   regards
-----------------------------------------------
Peng Jiang ?? ,Ph.D. Candidate
Antai College of Economics & Management
????????
Department of Mathematics
???
Shanghai Jiaotong University (Minhang Campus)
800 Dongchuan Road
200240 Shanghai
P. R. China

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