1 | // $Id: VectorFunction.cc 932 2007-10-05 21:03:46Z peter $ |
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2 | |
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3 | /* |
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4 | Copyright (C) 2007 Peter Johansson |
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5 | |
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6 | This file is part of the yat library, http://trac.thep.lu.se/trac/yat |
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7 | |
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8 | The yat library is free software; you can redistribute it and/or |
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9 | modify it under the terms of the GNU General Public License as |
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10 | published by the Free Software Foundation; either version 2 of the |
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11 | License, or (at your option) any later version. |
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12 | |
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13 | The yat library is distributed in the hope that it will be useful, |
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14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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16 | General Public License for more details. |
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17 | |
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18 | You should have received a copy of the GNU General Public License |
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19 | along with this program; if not, write to the Free Software |
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20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA |
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21 | 02111-1307, USA. |
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22 | */ |
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23 | |
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24 | #include "VectorFunction.h" |
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25 | #include "utility.h" |
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26 | |
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27 | #include <algorithm> |
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28 | #include <cassert> |
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29 | #include <numeric> |
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30 | #include <vector> |
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31 | |
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32 | namespace theplu { |
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33 | namespace yat { |
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34 | namespace statistics { |
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35 | |
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36 | VectorFunction::~VectorFunction(){} |
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37 | |
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38 | |
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39 | double Max::operator()(const std::vector<double>& vec) const |
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40 | { |
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41 | assert(vec.size()); |
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42 | return *(std::max_element(vec.begin(), vec.end())); |
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43 | } |
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44 | |
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45 | |
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46 | double Mean::operator()(const std::vector<double>& vec) const |
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47 | { |
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48 | assert(vec.size()); |
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49 | return std::accumulate(vec.begin(), vec.end(), 0.0)/vec.size(); |
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50 | } |
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51 | |
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52 | |
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53 | double Median::operator()(const std::vector<double>& vec) const |
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54 | { |
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55 | assert(vec.size()); |
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56 | return median(vec.begin(), vec.end()); |
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57 | } |
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58 | |
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59 | |
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60 | double Min::operator()(const std::vector<double>& vec) const |
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61 | { |
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62 | assert(vec.size()); |
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63 | return *(std::min_element(vec.begin(), vec.end())); |
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64 | } |
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65 | |
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66 | |
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67 | Nth_Element::Nth_Element(u_int N) |
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68 | : N_(N) {} |
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69 | |
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70 | |
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71 | double Nth_Element::operator()(const std::vector<double>& vec) const |
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72 | { |
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73 | assert(N_-1<vec.size()); |
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74 | std::vector<double> vec_copy(vec); |
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75 | std::vector<double>::iterator nth = vec_copy.begin()+(N_-1); |
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76 | std::nth_element(vec_copy.begin(), nth, vec_copy.end()); |
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77 | return *(nth); |
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78 | } |
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79 | |
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80 | |
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81 | |
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82 | |
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83 | }}} // of namespace statistics, yat, and theplu |
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