Reading multiple parts from file

[Igor Fridman]

Hello, I am trying to find an efficient way of
extracting PolyDatas from a file which has multiple
parts in it.  In doing so, I discovered the following
problem:

First I tried creating 1 reader object which reads the
whole file.  I set the part number to 1 and extract
the PolyData (via GetOutput).  Then I set the part
number to 2 and extract the PolyData.  It turns out,
however, this gives me thesame dataset as for part 1,
and I must Update the reader after setting a new part
number.  This, however, causes the reader to read the
file again.  This is quite cumbersome when the file
exceeds 10 parts and 5MB, as I it must read the whole
file 10 times!

I tried creating as many readers as there are parts
but still each reader reads and stores the whole file,
not just the part that I need.

Any suggestions?

Thanks in advance!
 
(sorry if this is a repeat, not sure if original
message got through)


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==================================================
Igor Fridman

Naval Research Laboratory
Vacuum Electronics Branch Code 6841
4555 Overlook Ave. S.W., Washington, DC 20375, USA
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