[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Create a logical array of 0
From: |
David Bateman |
Subject: |
Re: Create a logical array of 0 |
Date: |
Fri, 3 Sep 2004 16:23:02 +0200 |
User-agent: |
Mutt/1.4.1i |
According to Josep Monés i Teixidor <address@hidden> (on 09/03/04):
> Hi!
>
> How can I create a logical array of zeros without conversions between
> types?
>
> If tried zeros(m,n,"logical") but didn't work for logical.
>
> I'm currently using logical(zeros(m,n)) but I think this makes a
> conversion from double to bool (or it is smart enough to handle it?)
>
> Thanks in advance,
Err, I just added code like zeros(m,n,"int8") about a week ago that got into
2.1.58, I didn't think about "logical". Reading the man-pages for zeros in
matlab at
http://www.mathworks.com/access/helpdesk/help/techdoc/ref/zeros.html
The allowed types are
'double', 'single', 'int8', 'uint8', 'int16', 'uint16', 'int32', or 'uint32'.
as 'single' precision is not in octave at the moment, and taking this as a
reference zeros(m,n,classname) only works for the above classname minus
'single'.
The only version of matlab (R12) I have access to doesn't allow this
syntax, but instead treats the third argument as a numerical value and
creates a three dimensional matrix.
Given the above reference I don't beleieve Matlab itself can handle
zeros(m,n,'logical'). If your problem is memory then something like
logical(zeros(m,n,'int8')) should help..
D.
--
David Bateman address@hidden
Motorola CRM +33 1 69 35 48 04 (Ph)
Parc Les Algorithmes, Commune de St Aubin +33 1 69 35 77 01 (Fax)
91193 Gif-Sur-Yvette FRANCE
The information contained in this communication has been classified as:
[x] General Business Information
[ ] Motorola Internal Use Only
[ ] Motorola Confidential Proprietary
-------------------------------------------------------------
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
-------------------------------------------------------------
- Create a logical array of 0, Josep Monés i Teixidor, 2004/09/03
- Re: Create a logical array of 0, Josep Monés i Teixidor, 2004/09/03
- Re: Create a logical array of 0, David Bateman, 2004/09/03
- Re: Create a logical array of 0, John W. Eaton, 2004/09/03
- Re: Create a logical array of 0, David Bateman, 2004/09/03
- Re: Create a logical array of 0, David Bateman, 2004/09/03
- Re: Create a logical array of 0, John W. Eaton, 2004/09/03
RE: Create a logical array of 0, Randy Gober, 2004/09/03
Re: Create a logical array of 0,
David Bateman <=
Re: Create a logical array of 0, Josep Monés i Teixidor, 2004/09/03
Re: Create a logical array of 0, John W. Eaton, 2004/09/03