source: trunk/yat/classifier/DataLookup1D.cc

Last change on this file was 2919, checked in by Peter, 9 years ago

update copyright years

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date ID
File size: 3.6 KB
Line 
1// $Id$
2
3/*
4  Copyright (C) 2005 Peter Johansson
5  Copyright (C) 2006 Jari Häkkinen, Peter Johansson, Markus Ringnér
6  Copyright (C) 2007, 2008 Jari Häkkinen, Peter Johansson
7  Copyright (C) 2009, 2012 Peter Johansson
8
9  This file is part of the yat library, http://dev.thep.lu.se/yat
10
11  The yat library is free software; you can redistribute it and/or
12  modify it under the terms of the GNU General Public License as
13  published by the Free Software Foundation; either version 3 of the
14  License, or (at your option) any later version.
15
16  The yat library is distributed in the hope that it will be useful,
17  but WITHOUT ANY WARRANTY; without even the implied warranty of
18  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19  General Public License for more details.
20
21  You should have received a copy of the GNU General Public License
22  along with yat. If not, see <http://www.gnu.org/licenses/>.
23*/
24
25#include <config.h>
26
27#include "DataLookup1D.h"
28#include "MatrixLookup.h"
29
30#include "yat/utility/Matrix.h"
31#include "yat/utility/Vector.h"
32
33#include <cassert>
34#include <iostream>
35#include <iomanip>
36#include <limits>
37
38namespace theplu {
39namespace yat {
40namespace classifier {
41
42  DataLookup1D::DataLookup1D(const MatrixLookup& m, const size_t i, 
43                             const bool row_vector)
44    : column_vector_(!row_vector), index_(i), matrix_(&m), owner_(false)
45  {
46    assert( !column_vector_ || i<m.columns());
47    assert( column_vector_ || i<m.rows());
48  }
49 
50
51  DataLookup1D::DataLookup1D(const size_t size, const double value)
52    : column_vector_(false), index_(0), owner_(true)
53  {
54    matrix_ = new MatrixLookup(1,size,value);
55  }
56
57
58  DataLookup1D::DataLookup1D(const DataLookup1D& other)
59    : column_vector_(other.column_vector_), index_(other.index_),
60      matrix_(other.matrix_), owner_(false)
61  {
62  }
63
64
65  DataLookup1D::DataLookup1D(const utility::VectorBase& v, 
66                             const std::vector<size_t>& index)
67    : column_vector_(true), index_(0), owner_(true)
68  {
69    utility::Matrix* m = new utility::Matrix(1,index.size());
70    for (size_t i=0; i<index.size(); ++i){
71      assert(index[i]<v.size());
72      (*m)(0,i)=v(index[i]);
73    }
74    matrix_ = new MatrixLookup(*m, true);
75  }
76
77
78  DataLookup1D::DataLookup1D(const utility::VectorBase& v)
79    : column_vector_(false), index_(0), owner_(true)
80  {
81    utility::Matrix* m = new utility::Matrix(1,v.size());
82    for (size_t i=0; i<v.size(); ++i){
83      (*m)(0,i)=v(i);
84    }
85    matrix_ = new MatrixLookup(*m, true);
86  }
87
88
89  DataLookup1D::~DataLookup1D()
90  {
91    if (owner_)
92      delete matrix_;
93  }
94
95
96  DataLookup1D::const_iterator DataLookup1D::begin(void) const
97  {
98    if (column_vector_)
99      return matrix_->begin_column(index_);
100    return matrix_->begin_row(index_);
101  }
102
103
104  DataLookup1D::const_iterator DataLookup1D::end(void) const
105  {
106    if (column_vector_)
107      return matrix_->end_column(index_);
108    return matrix_->end_row(index_);
109  }
110
111
112  size_t DataLookup1D::size(void) const
113  {
114    return column_vector_ ? matrix_->rows() : matrix_->columns();
115  }
116
117
118  double DataLookup1D::operator()(const size_t i) const
119  { 
120    assert(i<size());
121    return column_vector_ ? (*matrix_)(i,index_) : (*matrix_)(index_,i);
122  }
123
124
125  double DataLookup1D::operator*(const DataLookup1D& other) const
126  {
127    assert(other.size()==size());
128    double res=0;
129    for (size_t i = 0; i<size(); i++)
130      res += (*this)(i)*other(i);
131    return res;
132  }
133
134
135  std::ostream& operator<<(std::ostream& os, const DataLookup1D& x)
136  {
137    os.setf(std::ios::dec);
138    std::streamsize precision = os.precision();
139    os.precision(std::numeric_limits<double>().digits10);
140   
141    for (size_t i=0; i<x.size(); ++i) {
142      os << x(i);
143      if ((i+1)<x.size())
144        os << os.fill();
145    }
146    os.precision(precision);
147    return os;
148  }
149
150}}} // of namespace classifier, yat, and theplu
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