source: trunk/yat/classifier/DataLookup1D.h @ 1040

Last change on this file since 1040 was 1040, checked in by Peter, 14 years ago

working on #267

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File size: 3.9 KB
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1#ifndef _theplu_yat_classifier_dataLookup1D_
2#define _theplu_yat_classifier_dataLookup1D_
3
4// $Id$
5
6/*
7  Copyright (C) 2005 Peter Johansson
8  Copyright (C) 2006 Jari Häkkinen, Markus Ringnér, Peter Johansson
9  Copyright (C) 2007 Jari Häkkinen, Peter Johansson
10
11  This file is part of the yat library, http://trac.thep.lu.se/yat
12
13  The yat library is free software; you can redistribute it and/or
14  modify it under the terms of the GNU General Public License as
15  published by the Free Software Foundation; either version 2 of the
16  License, or (at your option) any later version.
17
18  The yat library is distributed in the hope that it will be useful,
19  but WITHOUT ANY WARRANTY; without even the implied warranty of
20  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21  General Public License for more details.
22
23  You should have received a copy of the GNU General Public License
24  along with this program; if not, write to the Free Software
25  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
26  02111-1307, USA.
27*/
28
29#include "yat/utility/Functor.h"
30#include "yat/utility/Iterator.h"
31
32#include <iostream>
33#include <vector>
34
35namespace theplu {
36namespace yat {
37namespace utility {
38  class VectorBase;
39}
40namespace classifier { 
41
42  class DataLookup2D;
43
44  ///
45  /// @brief Class for general vector view.
46  ///
47
48  class DataLookup1D
49  {
50 
51  public:
52    /// 'Read Only' iterator
53    typedef utility::Iterator<const utility::ContIdentity<const double, 
54                                                          const DataLookup1D> > 
55    const_iterator;
56
57    ///
58    /// Constructor.
59    ///
60    /// @param row_vector if true DataLookup1D is looking into a
61    /// row of DataLookup2D, otherwise looking into a
62    /// column. @param index which row/column to look into.
63    ///
64    DataLookup1D(const DataLookup2D&, const size_t index, 
65                 const bool row_vector);
66
67    ///
68    /// Copy constructor
69    ///
70    DataLookup1D(const DataLookup1D&);
71
72    ///
73    /// Construct DataLookup1D that owns its underlying matrix. Object
74    /// has size @ size and all its element is equal to @a value.
75    ///
76    DataLookup1D(const size_t size, const double value=0); 
77
78    /**
79       @brief Create general view from utility::VectorBase
80   
81       Constructor creates a proper MatrixLookup that object can view
82       into. Object is owner of this underlying MatrixLookup. Object fulfills
83       \f$ x(i) = vec(index(i)) \f$
84    */
85    DataLookup1D(const utility::VectorBase& vec, 
86                 const std::vector<size_t>& index); 
87
88    /**
89       @brief Create general view from utility::VectorBase
90   
91       Constructor creates a proper MatrixLookup that object can view
92       into. Object is owner of this underlying MatrixLookup. Object fulfills
93       \f$ x(i) = vec(i) \f$
94    */
95    DataLookup1D(const utility::VectorBase& vec); 
96
97    ///
98    /// @brief Destructor deletes underlying DataLookup2D if object is owner
99    ///
100    virtual ~DataLookup1D();
101
102    /**
103       \return 'Read Only' iterator to first element.
104     */
105    const_iterator begin() const;
106
107    /**
108       \return 'Read Only' iterator to end of DataLookup1D.
109     */
110    const_iterator end() const;
111
112    ///
113    /// @return number of elements
114    ///
115    size_t size(void) const;
116
117    ///
118    /// @brief access operator
119    ///
120    double operator()(const size_t i) const;
121
122    ///
123    /// @brief access operator
124    ///
125    double operator[](const size_t i) const;
126
127    ///
128    /// scalar product
129    ///
130    double operator*(const DataLookup1D&) const;
131
132  private:
133    const DataLookup1D& operator=(const DataLookup1D&);
134
135    const bool column_vector_;
136    const size_t index_;
137    const DataLookup2D* matrix_;
138    const bool owner_;
139   
140  };
141
142  ///
143  /// @brief The output operator for DataLookup1D.
144  ///
145  /**
146   * Elements are separated by the character from the omanip fill.
147   * The following example will write the elements separated by tab.
148   *
149   @verbatim
150   char prev=s.fill('\t');
151   s << v;
152   s.fill(prev);
153   @endverbatim
154  */
155  std::ostream& operator<<(std::ostream& s, const DataLookup1D& v);
156 
157}}} // of namespace classifier, yat, and theplu
158
159#endif
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