save and load bug.
GARY FORBIS
forbisgaryg at msn.com
Wed Dec 24 22:55:55 CST 2008
OK, it's been awhile since I've tried GNU Octave. I'm running vista with octave-3.0.3.
It's much better than 3.0.1. I'm back to learning the language by running an existing program.
It did a save in several places then loaded the files back in later. Unfortunately they didn't load.
I used this unix command to help me track down the problem:
$ head -n 6 mnistvhclassify| cut -d\ -f-1000 >garytest2;tail -n 1 garytest2 | wc 1 500 10420
and modified the number of rows and columns until it quit failing.
This one worked:
$ head -n 6 garytest2| cut -d\ -f-190 >garytest1;tail -n 1 garytest1 | wc 1 189 3943
This one failed:$ head -n 6 garytest2| cut -d\ -f-191 >garytest1;tail -n 1 garytest1 | wc 1 190 3964
There's nothing interesting about the number of characters near these numbers so I wrotethis:
a=0.0877672686001518 b=[]
for x=1:500
b=[b,a] save stest b load stest end
and it worked all the way thru.
$ tail -n 1 stest | wc 1 500 9502
so I took the last value in the file that failed, -0.03597396637549816, and reran the program and it fail with this size:
$ tail -n 1 stest | wc 1 384 8066
The problem appears to have nothing to do with the number of characters in the row.
Then I counted the number of negative number:
$ tail -n 1 garytest1 | sed 's/[^-]//g' | wc 1 1 191
but that's only half of the place where the simple program failed.
I don't get it.
Any ideas?
Thanks.
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