source: trunk/yat/utility/MatrixWeighted.cc @ 1706

// $Id: MatrixWeighted.cc 1706 2009-01-08 21:36:27Z peter $

/*
  Copyright (C) 2003 Daniel Dalevi, Peter Johansson
  Copyright (C) 2004 Jari Häkkinen, Peter Johansson
  Copyright (C) 2005, 2006 Jari Häkkinen, Peter Johansson, Markus Ringnér
  Copyright (C) 2007, 2008 Jari Häkkinen, Peter Johansson
  Copyright (C) 2009 Peter Johansson

  This file is part of the yat library, http://dev.thep.lu.se/yat

  The yat library is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License as
  published by the Free Software Foundation; either version 3 of the
  License, or (at your option) any later version.

  The yat library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with yat. If not, see <http://www.gnu.org/licenses/>.
*/

#include "MatrixWeighted.h"

#include "DataIterator.h"
#include "Matrix.h"
#include "WeightIterator.h"

#include <cassert>
#include <vector>

namespace theplu {
namespace yat {
namespace utility {


  MatrixWeighted::MatrixWeighted(void)
    : columns_(0)
  {
  }


  MatrixWeighted::MatrixWeighted(size_t r, size_t c, double x, double w)
    : vec_(std::vector<DataWeight>(r*c, DataWeight(x,w))), columns_(c)
  {}

  
  MatrixWeighted::MatrixWeighted(const MatrixWeighted& other)
    : vec_(other.vec_), columns_(other.columns_)
  {}


  MatrixWeighted::MatrixWeighted(const Matrix& data)
  {
    copy(data);
  }

  
  MatrixWeighted::MatrixWeighted(std::istream& is, char sep)
  {
    Matrix data(is, sep);
    copy(data);
  }

  
  MatrixWeighted::iterator MatrixWeighted::begin(void)
  {
    return iterator(vec_.begin());
  }


  MatrixWeighted::const_iterator MatrixWeighted::begin(void) const
  {
    return const_iterator(vec_.begin());
  }


  MatrixWeighted::column_iterator MatrixWeighted::begin_column(size_t i)
  {
    return column_iterator(vec_.begin()+i, columns_);
  }


  MatrixWeighted::const_column_iterator 
  MatrixWeighted::begin_column(size_t i) const
  {
    return const_column_iterator(vec_.begin()+i, columns_);
  }


  MatrixWeighted::row_iterator MatrixWeighted::begin_row(size_t i)
  {
    return row_iterator(vec_.begin()+columns_*i);
  }


  MatrixWeighted::const_row_iterator MatrixWeighted::begin_row(size_t i) const
  {
    return const_row_iterator(vec_.begin()+columns_*i);
  }


  size_t MatrixWeighted::columns(void) const
  {
    return columns_;
  }


  void MatrixWeighted::copy(const Matrix& data)
  {
    Matrix weight;
    nan(data, weight);
    copy(data, weight);
  }


  void MatrixWeighted::copy(const Matrix& data, const Matrix& weight)
  {
    assert(data.rows()==weight.rows());
    assert(data.columns()==weight.columns());
    columns_ = data.columns();
    resize(data.rows(), data.columns());
    assert(rows()==data.rows());
    assert(columns()==data.columns());
    std::copy(data.begin(), data.end(), data_iterator(vec_.begin()));
    std::copy(weight.begin(), weight.end(), weight_iterator(vec_.begin()));
  }


  MatrixWeighted::iterator MatrixWeighted::end(void)
  {
    return iterator(vec_.end());
  }


  MatrixWeighted::const_iterator MatrixWeighted::end(void) const
  {
    return const_iterator(vec_.end());
  }


  MatrixWeighted::column_iterator MatrixWeighted::end_column(size_t i)
  {
    return column_iterator(vec_.begin()+i+vec_.size(), columns_);
  }


  MatrixWeighted::const_column_iterator 
  MatrixWeighted::end_column(size_t i) const
  {
    return const_column_iterator(vec_.begin()+i+vec_.size(), columns_);
  }


  MatrixWeighted::row_iterator MatrixWeighted::end_row(size_t i)
  {
    return row_iterator(vec_.begin()+columns_*(i+1));
  }


  MatrixWeighted::const_row_iterator MatrixWeighted::end_row(size_t i) const
  {
    return const_row_iterator(vec_.begin()+columns_*(i+1));
  }


  void MatrixWeighted::swap(MatrixWeighted& other)
  {
    std::swap(vec_, other.vec_);
    std::swap(columns_, other.columns_);
  }


  void MatrixWeighted::resize(size_t rows, size_t columns)
  {
    columns_ = columns;
    vec_.resize(rows*columns);
    assert(this->rows()==rows);
    assert(this->columns()==columns);
  }

  
  size_t MatrixWeighted::rows(void) const
  {
    if (vec_.size())
      return vec_.size()/columns_;
    return 0;
  }


  DataWeight& MatrixWeighted::operator()(size_t row, size_t column)
  {
    assert(column<columns_);
    assert(row*column < vec_.size());
    return vec_[row*columns_ + column];
  }


  const DataWeight& MatrixWeighted::operator()(size_t row, size_t column) const
  {
    assert(column<columns_);
    assert(row*column < vec_.size());
    return vec_[row*columns_ + column];
  }


  void swap(MatrixWeighted& lhs, MatrixWeighted& rhs)
  {
    lhs.swap(rhs);
  }

}}} // of namespace utility, yat and thep