Re: Save-load problem

[Henry F. Mollet]

Thanks you. Saving with the float-binary option works for me also.  Also
thanks to Iago for Add default_save_format="ascii"; to ~/.octaverc

But I still don't understand. If it were a matter of loosing precision,
would not the elements of vector A be a little different. When I compared
the 128th element they were identical to 5 digits (24.93639), Saving and
re-loading just dropped the 129th element (Column 129: 25.13274).
Henry


on 4/29/03 10:24 AM, Pablo Barrera González at address@hidden wrote:

> El mar, 29-04-2003 a las 19:05, Henry F. Mollet escribió:
>> I've tried an introductory example in an MATLAB textbook and used Octave to
>> check. Saving and reloading is changing the size of A. Why and how would I
>> avoid this problem?
>> Henry
>> 
> 
> This error it's due to the way how octave save ascii files. In order to
> save space (I guess) in your example:
>> GNU Octave, version 2.1.35 (powerpc-apple-darwin6.2).
>> Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001 John W. Eaton.
>> 
>> octave:1> A = 0:pi/16:8*pi;
>> octave:2> whos
>> 
>> *** local user variables:
>> 
>> prot  type                       rows   cols  name
>> ====  ====                       ====   ====  ====
>>  rwd  range                         1    129  A
>> 
> 
> Octave save this file:
> 
> # Created by Octave 2.0.16.92, Tue Apr 29 17:19:46 2003 <address@hidden>
> # name: A
> # type: range
> # base, limit, increment
> 0 25.1327412287183 0.196349540849362
> 
> And it looses presition.
> 
> In my machine I used save with the float-binary option:
> 
> address@hidden:/tmp$ octave2.0
> GNU Octave, version 2.0.16.92 (i386-pc-linux-gnu).
> Copyright (C) 1996, 1997, 1998, 1999, 2000 John W. Eaton.
> This is free software with ABSOLUTELY NO WARRANTY.
> For details, type `warranty'.
> 
> octave2.0:1> A = 0:pi/16:8*pi;
> octave2.0:2> whos
> 
> *** local user variables:
> 
> prot  type               rows   cols  name
> ====  ====               ====   ====  ====
> wd   range                 1    129  A
> 
> octave2.0:3> save -float-binary session3.mat
> octave2.0:4> clear
> octave2.0:5> whos
> octave2.0:6> load session3.mat
> octave2.0:7> whos
> 
> *** local user variables:
> 
> prot  type               rows   cols  name
> ====  ====               ====   ====  ====
> wd   range                 1    129  A
> 
> 
> And it seems to work. I don't know how to force octave for saving the
> entire list of values in ascii.
> 
> HTH
> 
> 




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