source: trunk/yat/classifier/DataLookup1D.h @ 680

Last change on this file since 680 was 680, checked in by Jari Häkkinen, 15 years ago

Addresses #153. Introduced yat namespace. Removed alignment namespace. Clean up of code.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date ID
File size: 2.9 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) The authors contributing to this file.
8
9  This file is part of the yat library, http://lev.thep.lu.se/trac/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 2 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 this program; if not, write to the Free Software
23  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
24  02111-1307, USA.
25*/
26
27#include "DataLookup2D.h"
28
29#include <cassert>
30#include <iostream>
31#include <vector>
32
33namespace theplu {
34namespace yat {
35namespace classifier { 
36
37  ///
38  /// Class for general vector view
39  ///
40
41  class DataLookup1D
42  {
43 
44  public:
45
46    ///
47    /// Constructor.
48    ///
49    /// @param row_vector if true DataLookup1D is looking into a
50    /// row of DataLookup2D, otherwise looking into a
51    /// column. @param index which row/column to look into.
52    ///
53    DataLookup1D(const DataLookup2D&, const size_t index, 
54                 const bool row_vector);
55
56    ///
57    /// Copy constructor
58    ///
59    DataLookup1D(const DataLookup1D&);
60
61    ///
62    /// Construct DataLookup1D that owns its underlying matrix. Object
63    /// has size @ size and all its element is equal to @a value.
64    ///
65    DataLookup1D(const size_t size, const double value=0); 
66
67    ///
68    ///
69    ///
70    virtual ~DataLookup1D();
71
72    ///
73    /// @return number of elements
74    ///
75    inline size_t size(void) const
76      { return column_vector_ ? matrix_->rows() : matrix_->columns(); }
77
78    ///
79    /// @brief access operator
80    ///
81    inline double operator()(const size_t i) const 
82    { 
83      assert(i<size()); 
84      return column_vector_ ? (*matrix_)(i,index_) : (*matrix_)(index_,i); 
85    }
86
87    ///
88    /// @brief access operator
89    ///
90    inline double operator[](const size_t i) const 
91    { 
92      return this->operator()(i);
93    }
94
95
96    ///
97    /// scalar product
98    ///
99    double operator*(const DataLookup1D&) const;
100
101  private:
102    const DataLookup1D& operator=(const DataLookup1D&);
103
104    const bool column_vector_;
105    const size_t index_;
106    const DataLookup2D* matrix_;
107    const bool owner_;
108   
109  };
110
111  ///
112  /// @brief The output operator for DataLookup1D.
113  ///
114  /**
115   * Elements are separated by the character from the omanip fill.
116   * The following example will write the elements separated by tab.
117   *
118   @verbatim
119   char prev=s.fill('\t');
120   s << v;
121   s.fill(prev);
122   @endverbatim
123  */
124  std::ostream& operator<<(std::ostream& s, const DataLookup1D& v);
125 
126}}} // of namespace classifier, yat, and theplu
127
128#endif
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