1 | #ifndef _theplu_yat_normalization_column_normalizer_ |
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2 | #define _theplu_yat_normalization_column_normalizer_ |
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3 | |
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4 | /* |
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5 | Copyright (C) 2008 Peter Johansson |
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6 | |
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7 | This file is part of the yat library, http://dev.thep.lu.se/yat |
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8 | |
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9 | The yat library is free software; you can redistribute it and/or |
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10 | modify it under the terms of the GNU General Public License as |
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11 | published by the Free Software Foundation; either version 2 of the |
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12 | License, or (at your option) any later version. |
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13 | |
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14 | The yat library is distributed in the hope that it will be useful, |
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15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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17 | General Public License for more details. |
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18 | |
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19 | You should have received a copy of the GNU General Public License |
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20 | along with this program; if not, write to the Free Software |
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21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA |
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22 | 02111-1307, USA. |
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23 | */ |
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24 | |
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25 | namespace theplu { |
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26 | namespace yat { |
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27 | namespace utility { |
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28 | class Matrix; |
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29 | } |
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30 | namespace normalization { |
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31 | |
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32 | /** |
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33 | \brief Normalize each column |
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34 | |
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35 | Using a functor T to normalize each column. |
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36 | |
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37 | \since New in yat 0.5 |
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38 | */ |
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39 | template<class T> |
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40 | class ColumnNormalizer |
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41 | { |
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42 | public: |
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43 | /** |
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44 | functor used to normalize each column |
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45 | */ |
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46 | typedef T normalizer_type |
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47 | |
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48 | /** |
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49 | \brief Default constructor |
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50 | */ |
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51 | ColumnNormalizer(void) {} |
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52 | |
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53 | /** |
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54 | \brief Constructor taking a functor \a norm |
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55 | */ |
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56 | ColumnNormalizer(T norm) |
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57 | : normalizer_(norm) {} |
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58 | |
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59 | /** |
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60 | Each column in \a result is normalized using class T. |
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61 | |
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62 | \note matrix is ignored |
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63 | */ |
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64 | void operator()(const utility::Matrix& matrix, |
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65 | utility::Matrix& result) const; |
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66 | private: |
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67 | T normalizer_; |
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68 | }; |
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69 | |
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70 | template<class T> |
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71 | void ColumnNormalizer<T>::operator()(const utility::Matrix& matrix, |
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72 | utility::Matrix& result) const |
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73 | { |
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74 | for (size_t i=0; i<matrix.rows(); ++i) |
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75 | normalizer_(result.begin_const_column(i), result.end_const_columns(i), |
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76 | result.begin_column(i)); |
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77 | |
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78 | } |
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79 | |
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80 | |
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81 | }}} // end of namespace normalization, yat and thep |
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82 | #endif |
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