Hi Ming,
> I used two input files to calculate the average structure pdb, 
> the first one used three trajectory file as stream id and SELECT 
> option, another used one trajectory file and no SELECT option.
> 
> As a result, the output average pdb files are the same  and they 
> are obviously different from that along the whole trajectory(1200 
> snapshot).  So I just assumed it worked well in this case.  
Since you compared the SELECT version to the non-SELECT version
and found a difference, it is probably doing the right thing.
A more guaranteed test would be to compare the result from the 
SELECT version to one generated by the 2-step method I suggested.
Bill
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Received on Mon Aug 25 2003 - 22:53:01 PDT