read files
- To: mathgroup at smc.vnet.net
- Subject: [mg6206] read files
- From: Peter Buttgereit <Buttgereit at pbmail.me.kp.dlr.de>
- Date: Thu, 27 Feb 1997 02:54:31 -0500
- Sender: owner-wri-mathgroup at wolfram.com
Dear Mathgroup, I have to deal with some ASCI files (0.5-1 MB) of real numbers in 47 columns. I don't need all the columns. Playing around with Read, Skip, SetStreamPosition I could't do it in less than 20 - 60 sec with Mathematica sucking in up to 100 Megs of virtual memory... Does any of you have an idea how to read fast with less memory requirement columns from ASCI files? Is there a function like SetStreamPosition working with words rather than characters? (Pentium 100, 64 MB; Mathematica 3.0 on NT 4.0) Thanks in advance, Peter