root/library/bdm/base/datasources.cpp @ 565

#include "datasources.h"

using namespace bdm;

void MemDS::getdata ( vec &dt ) {
        int i;

        bdm_assert_debug ( dt.length() == rowid.length(), "MemDS:getdata incompatible dt" );
        for ( i = 0; i < rowid.length(); i++ ) {
                dt ( i ) = Data ( rowid ( i ), time - delays ( i ) );
        }
}

void MemDS::getdata ( vec &dt, const ivec &indeces ) {
        int j, i;
        bdm_assert_debug ( dt.length() == indeces.length(), "MemDS:getdata incompatible dt" );
        for ( i = 0; i < indeces.length(); i++ ) {
                j = indeces ( i );
                dt ( i ) = Data ( rowid ( j ), time - delays ( j ) );
        }
}

void MemDS::step() {
        if ( time < Data.cols() ) {
                time++;
        }
}

void MemDS::set_rvs ( RV &drv, RV &urv ) {
        bdm_assert_debug ( drv._dsize() == rowid.length(), "MemDS::set_rvs incompatible drv" );
        bdm_assert_debug ( urv._dsize() == 0, "MemDS does not support urv." );

        Drv = drv;
}

MemDS::MemDS ( mat &Dat, ivec &rowid0, ivec &delays0 ) : rowid ( rowid0 ), delays ( delays0 ) {
        bdm_assert_debug ( max ( rowid ) <= Dat.rows(), "MemDS rowid is too high for given Dat." );
        bdm_assert_debug ( max ( delays ) < Dat.cols(), "MemDS delays are too high." );

        time = max ( delays );
        Data = Dat;
}

void ArxDS::step() {
        //shift history
        H.shift_right ( 0, dt_size );

        H.set_subvector ( dt_size - utsize, U ); // write U after Drv

        //get regressor
        rgr = rgrlnk.pushdown ( H );
        // Eval Y
        H.set_subvector ( 0, model.samplecond ( rgr ) );

}

void ArxDS::from_setting ( const Setting &set ) {
        shared_ptr<RV> yrv = UI::build<RV> ( set, "y" , UI::compulsory );
        shared_ptr<RV> urv = UI::build<RV> ( set, "u" , UI::compulsory );
        shared_ptr<RV> rrv = UI::build<RV> ( set, "rgr" , UI::compulsory );

        mat Th;
        UI::get ( Th, set, "theta", UI::compulsory );

        vec mu0;
        if ( !UI::get ( mu0, set, "offset" ) )
                mu0 = zeros ( yrv->_dsize() );

        mat sqR;
        UI::get ( sqR, set, "r", UI::compulsory );
        set_parameters ( Th, mu0, sqR );
        set_drv ( *yrv, *urv, *rrv );

        if ( set.exists ( "opt" ) )
                set_options ( set["opt"] );
}

CsvFileDS::CsvFileDS ( const string& fname, const string& orientation ) : FileDS() {
        time = 0;

        vec data_line;
        string line;

        ifstream fs;
        fs.open ( fname.c_str() );
        if ( fs.is_open() ) {
                while ( getline ( fs, line ) ) {
                        data_line.set ( line );
                        Data.append_row ( data_line );
                }
        }

        if ( orientation == "BY_ROW" ) {
                transpose ( Data, Data );
        }


}

//! Auxiliary function building full history of rv0
RV fullrgr ( const RV &drv0, const RV &urv0, const RV &rrv0 ) {
        RV T ( urv0 );
        RV pom = concat ( drv0, urv0 );
        int mint = rrv0.mint();
        for ( int i = 0; i > mint; i-- ) {
                pom.t ( -1 );
                T.add ( pom );
        }
        return T;
}

void ITppFileDS::from_setting ( const Setting &set ) {
        shared_ptr<RV> rvtmp = UI::build<RV> ( set, "rv" , UI::compulsory );

        it_file it ( set["filename"] );
        it << Name ( set["varname"] );
        it >> Data;
        time = 0;
        //rowid and delays are ignored

        set_drv ( *rvtmp, RV() );
}

void stateDS::from_setting ( const Setting &set ) {
        IM = UI::build<mpdf> ( set, "IM", UI::compulsory );
        OM = UI::build<mpdf> ( set, "OM", UI::compulsory );

        dt.set_length ( OM->dimension() );
        xt.set_length ( IM->dimension() );
        ut.set_length ( 0 );

#if 0
        RV* rvtmp = UI::build<RV> ( set["IM"], "rvu", UI::compulsory );
        //set_drv(rvtmp);
#endif
}