MathGroup Archive 2002

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Reading Data into Mathematica

  • To: mathgroup at
  • Subject: [mg33839] Reading Data into Mathematica
  • From: Oleg Burd <OBurd at>
  • Date: Fri, 19 Apr 2002 02:28:49 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

I'm trying to resolve following problem:

Form file of 700 MB, consisting of lines, every line begins with time stamp
(hhmmss) and contains information regarding different objects, the
information regarding each object must be extracted and anlalysed.

After spending several days on playing with Read, ReadList and searching the
MathGroup archive, I find out:
ReadList is not proper solution, because of RAM restrictions.MemoryConserve
doesn't help mauch as well.
There are routines in MathSource for working with data, they are designed
however only for binary data(!).
There is know proper memory management in Mathemtaica, which would make
possible to allocate memory for ReadList.
While (Read[Stream,Record]=!= EndOfFile) is too slow, for reading such data.

Can anybody help me to solve it? Ot may be you know some of proper memory
Or my approach is completely wrong and Matheamtica is neither designed for
such tasks nor can handle them?

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