Re: Create a logical array of 0

[David Bateman]

According to Josep Monés i Teixidor <address@hidden> (on 09/03/04):
> On dv, 2004-09-03 at 16:48, David Bateman wrote:
> > Ok, this is a bug I introduced in the week before release. The problem
> > is here.
> > 
> >    x = a * ones(idx, class(a))
> > 
> > as with the previously zeros(m,n,"logical") issue, ones(m,n,"logical")
> > isn't defined!!! 
> 
> In this case (like in zeros) do you think it would be harmless to break
> compatibility a bit and accept zeros(m,n,"logical") ? Since it's an
> addition it's not the same as other imcompataibilities (is more like
> "embrace and extend" hehe)
> 
> I can't see why MATLAB lacks of this. It to me as an overlook by MATLAB
> developers (or perhaps they don't want people to use a lot logical
> arrays?).

If their logical arrays are doubles this is probably exactly the point...

> > A workaround for your case is repmat([false, false],10,5);
> 
> 
> octave:74> m=repmat([false, false],10,5);
> octave:75> whos m
> 
> *** local user variables:
> 
>   Prot Name  Size  Bytes  Class
>   ==== ====  ====  =====  =====
>    rwd m    10x10    800  matrix
> 
> Total is 100 elements using 800 bytes

Yeah, I said it cast it as double.... Working on a patch that addresses
all of this. Wait a couple of minutess...

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) 
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