Re: [boost] different matrix library?

Subject: Re: [boost] different matrix library?
From: joel (joel.falcou_at_[hidden])
Date: 2009-08-17 08:08:46

> I don't quite understand why you wouldn't want a DSL like MATLAB?  
> After all, MATLAB remember is essentially FORTRAN with different 
> horseshoes, that's why so many scientific / engineering types pick it 
> up so fast - there is very little that's new to learn.
Exactly
> For example,
>
>  alpha(2:10)=alpha(1:9)
>
> Is the above MATLAB or FORTRAN? How would you express this in C++ 
> (note the aliasing)? Perhaps
>
>  alpha(range(2,10))=alpha(range(1,9));
>
> or some-such? How about,
>
NT2 v3.0 says exactly that : alpha(range(2,10))=alpha(range(1,9));
>  vec=mat(:,4)
>
> (Again, is that MATLAB or is it FORTRAN?)
>
> Presumably something like:
>
>  vec=matrix_row<matrix<double> >(mat,4);  // uBlas style.
>
NT2 v3.0 says : vec=mat(_,4)

> In my humble opinion, for C++ to really take off in next generation 
> scientific applications (believe me I'd love to see it happen), the 
> language should keep out of the way.  Ultimately application writers 
> just want the answer - they really don't want to have to figure out 
> how the minutiae of template meta-programming works.
>
> Get 'em in the door first with an easy to use intuitive interface -- 
> once they are on board you can break out the hard stuff, then they 
> will be hooked for life! ;-) 
Massive agreement here :o

-- 
___________________________________________
Joel Falcou - Assistant Professor
PARALL Team - LRI - Universite Paris Sud XI
Tel : [phone]