From help-octave-request at bevo dot che dot wisc dot edu Fri Jan 16 12:40:31 2004
Subject: Re: Cannot load a binary file
From: "Henry F. Mollet" <mollet at pacbell dot net>
To: "John W. Eaton" <jwe at bevo dot che dot wisc dot edu>
CC: Octave_post <help-octave at bevo dot che dot wisc dot edu>
Date: Fri, 16 Jan 2004 10:39:50 -0800

on 1/15/04 8:28 PM, John W. Eaton at jwe at bevo dot che dot wisc dot edu wrote:

> On  6-Jan-2004, Henry F. Mollet <mollet at pacbell dot net> wrote:
> 
> | I can save a file as a binary but not load it?
> | Henry
> | 
> | octave:89> a = [1,2;3,4];
> | octave:90> whos
> | 
> | *** local user variables:
> | 
> | prot  type                       rows   cols  name
> | ====  ====                       ====   ====  ====
> |  rwd  matrix                        2      2  a
> | 
> | octave:91> save testasciidefault
> | octave:92> clear all
> | octave:93> whos
> | octave:94> load testasciidefault
> | octave:95> whos
> | 
> | *** local user variables:
> | 
> | prot  type                       rows   cols  name
> | ====  ====                       ====   ====  ====
> |  rwd  matrix                        2      2  a
> | 
> | octave:96> save -binary testbinary
> | octave:97> clear all
> | octave:98> whos
> | octave:99> load -binary testbinary
> | error: load: trouble reading binary file `testbinary'
> | 
> | I've tried the same with -matbinary with the same result.
> 
> What system are you using?
> 
> What version of Octave?
> 
> This does not appear to be a problem with 2.1.50 or the current CVS
> sources on a Debian system.
> 
> From other posts, I seem to remember that you are using Mac OS X.
> Perhaps the problem is due to an old bug in the C or C++ library on
> that system that causes binary reads to report the wrong number of
> bytes or the wrong status at EOF (I can't remember the precise details
> of the bug, just that there was one -- maybe someone else remembers
> more can provide additional information).
> 
> jwe
> 
> 
Your remember correctly:
GNU Octave, version 2.1.46 (powerpc-apple-darwin6.8).
Thanks for pointing to the potential problem.
Henry



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