Re: [ublas] set of ublas matrix

Subject: Re: [ublas] set of ublas matrix
From: Ralf Philipp Denzer (Ralf.Denzer_at_[hidden])
Date: 2011-08-04 03:33:55

Hello Yajima,

you can do something like

ublas::vector<ublas::matrix<double> > A;

I.e.:

ublas::vector<dmatrix> A;
A.resize(10);   // vector containing 10 ublas::matrices
for( int i=0;i<10;i++){
   dmatrix b(10,10);
   set values to b;

   // set the correct size of matrix A(i)
   A(i).resize(b.size1(), b.size2());
   A(i) =b;
}

That should work ... (not tested)

You can use also:
std::vector<ublas::matrix<double> > A;
or
std::map<int, ublas::matrix<double> > A;
or other containers ...
Depends what you prefer ...

Bye

Ralf

On 08/04/2011 01:03 AM, Masanao Yajima wrote:
> Hi List
>
> Is there away to create a "set" of ublas matrix.
> (by set I mean it in the most abstract way)
>
> I would like to create bunch of matrix<double> and store it in some 
> form of a data structure
> then retrieve them by an index and use it as a matrix<double>.
>
> Here is a vague pseudo code for what I would like to do
>
> something A;
> for( int i=0;i<10;i++){
>   dmatrix b(10,10);
>   set values to b;
>   A(i) =b;
> }
>
> //then use it as
>
> for( int i=0;i<10;i++){
>   dmatrix c = A(i);
>   do calculation with c
> }
>
> Or if you have better way to do something similar, I'd appreciate your 
> input.
>
> Thank you for your help.
>
> Cheers
> Yajima
>
>
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