1 | // $Id: OneDimensional.cc 1000 2007-12-23 20:09:15Z jari $ |
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2 | |
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3 | /* |
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4 | Copyright (C) 2005 Peter Johansson |
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5 | Copyright (C) 2006 Jari Häkkinen, Peter Johansson |
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6 | Copyright (C) 2007 Peter Johansson |
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7 | |
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8 | This file is part of the yat library, http://trac.thep.lu.se/yat |
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9 | |
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10 | The yat library is free software; you can redistribute it and/or |
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11 | modify it under the terms of the GNU General Public License as |
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12 | published by the Free Software Foundation; either version 2 of the |
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13 | License, or (at your option) any later version. |
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14 | |
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15 | The yat library is distributed in the hope that it will be useful, |
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16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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18 | General Public License for more details. |
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19 | |
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20 | You should have received a copy of the GNU General Public License |
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21 | along with this program; if not, write to the Free Software |
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22 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA |
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23 | 02111-1307, USA. |
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24 | */ |
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25 | |
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26 | #include "OneDimensional.h" |
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27 | |
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28 | namespace theplu { |
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29 | namespace yat { |
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30 | namespace regression { |
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31 | |
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32 | OneDimensional::OneDimensional(void) |
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33 | : chisq_(0) |
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34 | { |
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35 | } |
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36 | |
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37 | OneDimensional::~OneDimensional(void) |
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38 | { |
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39 | } |
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40 | |
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41 | |
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42 | double OneDimensional::chisq(void) const |
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43 | { |
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44 | return chisq_; |
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45 | } |
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46 | |
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47 | |
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48 | double OneDimensional::prediction_error2(const double x) const |
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49 | { |
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50 | return s2()+standard_error2(x); |
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51 | } |
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52 | |
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53 | |
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54 | std::ostream& OneDimensional::print(std::ostream& os, const double min, |
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55 | double max, const u_int n) const |
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56 | { |
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57 | double dx; |
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58 | if (n>1) |
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59 | dx=(max-min)/(n-1); |
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60 | else{ |
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61 | dx=1.0; |
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62 | max=min; |
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63 | } |
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64 | |
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65 | for ( double x=min; x<=max; x+=dx) { |
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66 | double y = predict(x); |
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67 | double y_err = sqrt(prediction_error2(x)); |
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68 | os << x << "\t" << y << "\t" << y_err << "\n"; |
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69 | } |
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70 | return os; |
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71 | } |
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72 | |
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73 | |
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74 | double OneDimensional::r2(void) const |
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75 | { |
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76 | return 1 - chisq()/ap_.y_averager().sum_xx_centered(); |
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77 | } |
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78 | |
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79 | double OneDimensional::variance(void) const |
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80 | { |
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81 | return ap_.y_averager().variance(); |
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82 | } |
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83 | |
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84 | }}} // of namespaces regression, yat, and theplu |
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