root/library/mex/mexds.h @ 383

#include "../bdm/stat/libDS.h"
#include "mexparse.h"

namespace bdm {
/*!
* \brief Memory storage of off-line data column-wise

The data are stored in an internal matrix \c Data . Each column of Data corresponds to one discrete time observation \f$t\f$. Access to this matrix is via indices \c rowid and \c delays.

The data can be loaded from a file.
*/
class MexDS : public MemDS {
                //!Default constructor
        MexDS () {};

        /*! \brief Create memory data source from mxArray

        \code
        system={
                type="mexDS";
                varname="";            // name of workspace variable
                rids=[1 1 1];          // numbers of data rows
                tds =[0 1 2];          // time delays
                };
        \endcode

        MemDS with the above fields will be created;

        \todo Very memory inefficient implementation. The data file is copied 2 times! 
        For better implementatin we would need MemDS with pointer to the raw data. Then it could operate directly inside mxArray.

        */
        void from_setting( const Setting &set )
        {       
                Data = mxArray2mat(mexGetVariable("base",set["varname"]));
                UI::get( rowid, set, "rids" );
                it_assert_debug ( max ( rowid ) <=Data.rows(),"MemDS rowid is too high for given Dat." );

                UI::get( delays, set, "tds" );
                time = max ( delays );
                it_assert_debug ( time < Data.cols(),"MemDS delays are too high." );

                RV* r = UI::build<RV>(set,"rv");
                RV ru=RV();
                set_rvs(*r,ru);
        }


        // TODO dodelat void to_setting( Setting &set ) const;
};

UIREGISTER(MexDS);

}