From help-octave-request at bevo dot che dot wisc dot edu Wed Dec  5 12:05:16 2001
Subject: "-mat-binary"  (was : Re: Is it possible to save structs?)
From: "E. Joshua Rigler" <Jrigler at colorado dot edu>
To: mark dot esplin at sdl dot usu dot edu
Cc: Help-Octave <help-octave at bevo dot che dot wisc dot edu>
Date: 05 Dec 2001 11:04:31 -0700

This is almost completely unrelated, but I'll ask in this thread anyway.

I almost always use "-mat-binary" to save sessions, just so I can bring
it up in Matlab if need-be.  I often use the xcov/xcorr functions, which
can return a "lag" vector.  This is an N-column row vector of the
time-lags associated with the correlation function.

If this vector is in memory (it doesn't matter what it is called), I get
an error when trying to save all my variables to "-mat-binary".  Just to
waste band-width, I've attached a summary of commands and output that
illustrate this problem.  Is the "lag" vector returned from the
xcov/xcorr functions a strange data-type?  This is just weird, but not
any kind of show-stopper.  I use 2.1.34 under RH Linux 7.1.

-EJR

-----

octave:217> save -mat-binary og.mat *
warning: save: wrong type argument `range'
warning: near line 217, column 1:

>>> save ("-mat-binary", "og.mat", "*")


error: save: error while writing `lag' to MAT file
octave:217> 
octave:217> 
octave:217> whos la*

*** local user variables:

prot  type                       rows   cols  name
====  ====                       ====   ====  ====
 rwd  range                         1    481  lag

octave:218> tmp = lag;
octave:219> clear lag
octave:220> save -mat-binary og.mat *
warning: save: wrong type argument `range'
warning: near line 220, column 1:

>>> save ("-mat-binary", "og.mat", "*")


error: save: error while writing `tmp' to MAT file
octave:220> whos tmp

*** local user variables:

prot  type                       rows   cols  name
====  ====                       ====   ====  ====
 rwd  range                         1    481  tmp

octave:221>   
octave:221> 
octave:221> test
test      test_out  
octave:221> test_lag = ones (1,481);
octave:222> clear tmp
octave:223> save -mat-binary og.mat *
octave:224> whos test_lag

*** local user variables:

prot  type                       rows   cols  name
====  ====                       ====   ====  ====
 rwd  matrix                        1    481  test_lag





On Wed, 2001-12-05 at 09:06, Mark Esplin wrote:
> 	You can save and load structs using the Matlab binary format.  That is use:
> 
> save -mat-binary "test" a
> 
>                              -Mark Esplin
> 
> On Wednesday 05 December 2001 07:26 am, Roberto Hernandez wrote:
> > Hey everyone,
> >
> > When trying to save structures I get the following message:
> >
> > -----------------------------------
> > octave:3> a
> > a =
> > {
> >    b = 1
> >    c = 2
> > }
> > octave:4> save "Test" a
> > warning: save: wrong type argument `struct'
> >
> > warning: near line 4, column 1:
> >  >>> save ("Test", "a")
> >
> > -----------------------------------
> 
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