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saving ranges (was -mat-binary (was : Re: saving structs))
From: |
Paul Kienzle |
Subject: |
saving ranges (was -mat-binary (was : Re: saving structs)) |
Date: |
Wed, 5 Dec 2001 13:50:54 -0500 |
I am returning lag as type "range" rather than type "matrix". Apparently
ranges are only supported for ascii in load/save. To convert a range into
a matrix you must wrap it with [...].
Returning a range is probably an error on my part. Most operations on
ranges first convert them into vectors and operate on the vector, so
returning a range saves some memory if it is not used, it is neutral
if it is used once, and it cost some time if it is used many times.
I will change xcorr to return a matrix instead.
Paul Kienzle
address@hidden
On Wed, Dec 05, 2001 at 11:04:31AM -0700, E. Joshua Rigler wrote:
> 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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Octave is freely available under the terms of the GNU GPL.
Octave's home on the web: http://www.octave.org
How to fund new projects: http://www.octave.org/funding.html
Subscription information: http://www.octave.org/archive.html
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