sort question

[Michael Underwood]

I looking for a neat way of determining the index that of each element of an array would have if sorted.

 

eg.

octave:1> a = rand(4,1)
a =

 

  0.73433
  0.55564
  0.49191
  0.90766

 

octave:2> b= sort(a)
b =

 

  0.49191
  0.55564
  0.73433
  0.90766

 

for instance, a(1)  is the 3rd element of b.

 

I know this can be done with the find command, but the array I am dealing with are sufficiently large to make the find command too time consuming.

 

Any ideas??

 

 

Regards

Michael Underwood

Systems Analyst 
Generation Division
Hydro Tasmania

Ph: (03) 6230 5494

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