root/library/bdm/base/datasources.cpp @ 942

#include "datasources.h"

using namespace bdm;

MemDS::MemDS ( mat &Dat ) : Data( Dat ) {
}

void MemDS::step( ) {
        if ( time < max_length() ) {
                time++;
        }
}

void MemDS::getdata ( vec &dt ) const {
        bdm_assert_debug ( dt.length() == Data.rows(), "MemDS:getdata incompatible dt" );
        dt = Data.get_col ( time );
}

void MemDS::getdata ( vec &dt, const ivec &indices ) {
        bdm_assert_debug ( dt.length() == indices.length(), "MemDS:getdata incompatible dt" );
        vec tmp = Data.get_col ( time );
        dt = tmp ( indices );
}

void MemDS::set_drv ( const RV &drv ) {
        bdm_assert_debug ( drv._dsize() == Data.rows(), "MemDS::set_rvs incompatible drv" );
        DS::set_drv ( drv, RV() );
}

void MemDS::from_setting ( const Setting &set ) {
        DS::from_setting ( set );

        UI::get ( Data, set, "Data", UI::compulsory );
        
        if ( !UI::get ( time, set, "time", UI::optional ) ) {
                time = 0;
        }
}

void MemDS::validate()
{
        dtsize = Data.rows();
        utsize = 0;
        // DS::validate() has to be called after the dtsize attribute is set to proper value
        DS::validate();
        log_level[logut]=0;
}

void FileDS::from_setting ( const Setting & set ) {
        // here we do not call MemDS::from_setting intentionally as we can not load any Data matrix directly
        DS::from_setting ( set );

        UI::get ( filename, set, "filename", UI::compulsory );

        time = 0;
}

void CsvFileDS::from_setting ( const Setting & set ) {
        FileDS::from_setting ( set );

        vec data_line;
        string line;

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

        string orientation;
        if( UI::get ( orientation, set, "orientation", UI::optional ) & (orientation == "BY_ROW") ) 
                transpose ( Data, Data );
}

void ITppFileDS::from_setting ( const Setting & set ) {
        FileDS::from_setting ( set );

        string varname;
        UI::get ( varname, set, "varname", UI::compulsory );

        it_file it ( filename );
        it << Name ( varname );
        it >> Data;
}

void PdfDS::step() {
        yt2rgr.store_data ( yt ); // y is now history
        ut2rgr.filldown ( ut, rgr );
        yt2rgr.filldown ( yt, rgr );
        yt = ipdf->samplecond ( rgr );
        ut2rgr.store_data ( ut ); //u is now history
}

void PdfDS::getdata ( vec & dt_out ) const {
        bdm_assert_debug ( dt_out.length() >= dtsize, "Short output vector" );
        dt_out.set_subvector ( 0, yt );
        dt_out.set_subvector ( yt.length(), ut );
}

void StateDS::step() {
        vec imc ( IM->dimensionc() );
        imc.set_subvector ( 0, xt );
        u2imc.filldown ( ut, imc );
        xt = IM->samplecond ( imc );

        vec omc ( OM->dimensionc() );
        omc.set_subvector ( 0, xt );
        u2omc.filldown ( ut, omc );
        vec yt;
        yt = OM->samplecond ( omc );
        //fill all data
        dt.set_subvector ( 0, yt );
        dt.set_subvector ( yt.length(), xt );
        dt.set_subvector ( yt.length()+xt.length(), ut );
}

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

        //todo test if IM->rvc contains IM->rv
        //todo test if OM->rvc contains IM->rv

        UI::get ( xt, set, "x0", UI::optional );

}

void StateDS::validate() {
        DS::validate();

        RV Yrv = concat ( OM->_rv() , IM->_rv() ); // export also true state
        int ytsize = Yrv._dsize();

        RV tmp = concat ( OM->_rvc(), IM->_rvc() ); // what i not in rvc
        Urv = tmp.subt ( Yrv ); // remove dt,xt and
        Urv = Urv.subt ( Yrv.copy_t ( -1 ) ); // remove dt,xt and
        utsize = Urv._dsize();

        set_drv ( Yrv, Urv );
        dtsize = utsize + ytsize;

        dt.set_length ( dtsize );
        if ( xt.length() != IM->dimension() ) {
                xt = zeros ( IM->dimension() );
        }
        ut.set_length ( Urv._dsize() );

        //create data links
        u2imc.set_connection ( IM->_rvc(), Urv );
        u2omc.set_connection ( OM->_rvc(), Urv );
}