VecExtendedVMatrix.cc

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// -*- C++ -*-

// PLearn (A C++ Machine Learning Library)
// Copyright (C) 1998 Pascal Vincent
// Copyright (C) 1999-2001 Pascal Vincent, Yoshua Bengio, Rejean Ducharme and University of Montreal
// Copyright (C) 2002 Pascal Vincent, Julien Keable, Xavier Saint-Mleux
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// 
//  1. Redistributions of source code must retain the above copyright
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/* *******************************************************      
   * $Id: VecExtendedVMatrix.cc,v 1.7 2004/07/21 16:30:55 chrish42 Exp $
   ******************************************************* */

#include "VecExtendedVMatrix.h"
#include <plearn/math/TMat.h>

namespace PLearn {
using namespace std;


PLEARN_IMPLEMENT_OBJECT(VecExtendedVMatrix, "ONE LINE DESC", "NO HELP");

VecExtendedVMatrix::VecExtendedVMatrix()
{
}

VecExtendedVMatrix::VecExtendedVMatrix(VMat underlying, Vec extend_data)
  : inherited(underlying.length(), underlying.width() +
              extend_data.length()),
    underlying_(underlying), extend_data_(extend_data)
{
  build();
}

void
VecExtendedVMatrix::build()
{
    inherited::build();
    build_();
}

void
VecExtendedVMatrix::build_()
{
    if (underlying_)
        fieldinfos = underlying_->getFieldInfos();
}

void
VecExtendedVMatrix::declareOptions(OptionList &ol)
{
    declareOption(ol, "underlying_", &VecExtendedVMatrix::underlying_, OptionBase::buildoption, "");
    declareOption(ol, "extend_data_", &VecExtendedVMatrix::extend_data_, OptionBase::buildoption, "");
    inherited::declareOptions(ol);
}

void VecExtendedVMatrix::getNewRow(int i, const Vec& v) const
{
#ifdef BOUNDCHECK
  if(i<0 || i>=length())
    PLERROR("In VecExtendedVMatrix::getNewRow OUT OF BOUNDS");
  if(v.length() != width())
    PLERROR("In VecExtendedVMatrix::getNewRow v.length() must be equal to the VMat's width");
#endif

  Vec subv = v.subVec(0,underlying_->width());
  underlying_->getRow(i,subv);
  copy(extend_data_.begin(), extend_data_.end(),
       v.begin() + underlying_->width());
}

} // end of namespace PLearn

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