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MathGroup Archive 2007

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Re: Manipulating current read position in a binary file

  • To: mathgroup at smc.vnet.net
  • Subject: [mg80291] Re: Manipulating current read position in a binary file
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Thu, 16 Aug 2007 07:23:55 -0400 (EDT)
  • Organization: Uni Leipzig
  • References: <fa132d$mvv$1@smc.vnet.net>
  • Reply-to: kuska at informatik.uni-leipzig.de

Hi,

and SetStreamPosition[] and StreamPosition[] does not help ?

Regards
   Jens

Aranthon wrote:
> Hello all,
> 
> I'm trying to read in a large data file (several million data points);
> at the beginning of the file is the number of data points, but at the
> end of the file is the number of bins into which the data will be
> grouped.  Is there a way to skip to the end of the file to read in the
> number of bins before returning to the beginning of the file to read
> in the actual data?  I can do the analysis In another CAS, since there are
> functions fseek and ftell, so that once I read in the number of data
> points I can seek to the end, get the grouping count, then seek back
> to the beginning, but I'd like to be able to do it in Mathematica.
> 
> Any suggestions?
> 
> Thanks,
> 
> Greg Anderson
> Doctoral Candidate
> University of Maryland
> 
> 


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