source: trunk/yat/classifier/DataLookupWeighted1D.h @ 1000

Last change on this file since 1000 was 1000, checked in by Jari Häkkinen, 13 years ago

trac moved to new location.

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1#ifndef _theplu_yat_classifier_dataLookup_weighted_1D_
2#define _theplu_yat_classifier_dataLookup_weighted_1D_
3
4// $Id: DataLookupWeighted1D.h 1000 2007-12-23 20:09:15Z jari $
5
6/*
7  Copyright (C) 2006 Jari Häkkinen, Peter Johansson
8  Copyright (C) 2007 Peter Johansson
9
10  This file is part of the yat library, http://trac.thep.lu.se/yat
11
12  The yat library is free software; you can redistribute it and/or
13  modify it under the terms of the GNU General Public License as
14  published by the Free Software Foundation; either version 2 of the
15  License, or (at your option) any later version.
16
17  The yat library is distributed in the hope that it will be useful,
18  but WITHOUT ANY WARRANTY; without even the implied warranty of
19  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20  General Public License for more details.
21
22  You should have received a copy of the GNU General Public License
23  along with this program; if not, write to the Free Software
24  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25  02111-1307, USA.
26*/
27
28#include "yat/utility/IteratorWeighted.h"
29
30#include <iostream>
31#include <vector>
32
33namespace theplu {
34namespace yat {
35namespace classifier { 
36
37  class MatrixLookupWeighted;
38
39  ///
40  /// @brief Class for general weighted vector view.
41  ///
42  /// @see MatrixLookupWeighted
43  ///
44  class DataLookupWeighted1D
45  {
46 
47  public:
48   
49    /// 'Read Only' Iterator
50    typedef utility::IteratorWeighted<const double, const classifier::DataLookupWeighted1D> 
51    const_iterator;
52
53    ///
54    /// Constructor.
55    ///
56    /// @param row_vector if true (default) DataLookup1D is
57    /// looking into a row of DataLookup2D, otherwise looking into
58    /// a column. @param index which row/column to look into.
59    ///
60    DataLookupWeighted1D(const MatrixLookupWeighted&, const size_t index, 
61                         const bool row_vector);
62
63    ///
64    /// Copy constructor
65    ///
66    DataLookupWeighted1D(const DataLookupWeighted1D&);
67
68    ///
69    /// Construct DataLookup1D that owns its underlying matrix. Object
70    /// has size @ size and all its element is equal to @a value.
71    ///
72    DataLookupWeighted1D(const size_t size, double value=0, double weight=1); 
73
74    ///
75    /// @brief Destructor
76    ///
77    virtual ~DataLookupWeighted1D();
78
79    /**
80       \return 'Read Only' iterator to beginning of DataLookupWeighted1D.
81     */
82    const_iterator begin() const;
83
84    /**
85       \return data(i)
86    */
87    double data(const size_t i) const;
88   
89    /**
90       \return 'Read Only' iterator to end of DataLookupWeighted1D.
91     */
92    const_iterator end() const;
93
94    ///
95    /// @return number of elements
96    ///
97    size_t size(void) const;
98
99    ///
100    /// @return weight(i)
101    ///
102    double weight(const size_t i) const;
103
104    ///
105    /// @return data(i) * weight(i)
106    ///
107    double operator()(const size_t i) const;
108
109    ///
110    /// @return data(i) * weight(i)
111    ///
112    double operator[](const size_t i) const;
113
114  private:
115    const DataLookupWeighted1D& operator=(const DataLookupWeighted1D&);
116
117    const bool column_vector_;
118    const size_t index_;
119    const MatrixLookupWeighted* matrix_;
120    const bool owner_;
121   
122  };
123
124  ///
125  /// @return sum of weights
126  ///
127  double sum_weight(const DataLookupWeighted1D&);
128
129}}} // of namespace classifier, yat, and theplu
130
131#endif
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