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reading ascii matrix
From: |
Ben Bauer |
Subject: |
reading ascii matrix |
Date: |
Fri, 09 Feb 2001 09:25:40 -0500 |
Info:
Octave, version 2.1.9 (i686-pc-linux-gnu).
(PIII 550 with 256M ram)
Linux 2.2.16
egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)
I have a plain ascii file of 2 columns and
approx 2.8 million rows that I need to do some
statistics on. In my octave script I have
for i=1:p
[a(i),b(i)]=fscanf(myfile,"%f %f","C");
...
where p is the number of records in the file.
This program has been reading in the data for
2 days now. Currently just less than half the
data are read in according to a print command I
have in the loop. There must be a better way!
The the entire script runs in about 1.5 minutes
for a shorter file of 20000 data pairs, with the
majority of the time taken in reading the data.
Any useful suggestions would be appreciated. Thanks.
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- reading ascii matrix,
Ben Bauer <=