1 | // $Id: OneDimensional.cc 729 2007-01-05 16:00:15Z peter $ |
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2 | |
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3 | /* |
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4 | Copyright (C) The authors contributing to this file. |
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5 | |
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6 | This file is part of the yat library, http://lev.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 "OneDimensional.h" |
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25 | |
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26 | namespace theplu { |
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27 | namespace yat { |
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28 | namespace regression { |
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29 | |
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30 | OneDimensional::OneDimensional(void) |
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31 | : chisq_(0) |
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32 | { |
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33 | } |
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34 | |
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35 | OneDimensional::~OneDimensional(void) |
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36 | { |
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37 | } |
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38 | |
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39 | |
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40 | double OneDimensional::chisq(void) const |
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41 | { |
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42 | return chisq_; |
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43 | } |
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44 | |
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45 | |
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46 | double OneDimensional::prediction_error2(const double x) const |
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47 | { |
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48 | return s2()+standard_error2(x); |
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49 | } |
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50 | |
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51 | |
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52 | std::ostream& OneDimensional::print(std::ostream& os, const double min, |
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53 | double max, const u_int n) const |
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54 | { |
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55 | double dx; |
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56 | if (n>1) |
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57 | dx=(max-min)/(n-1); |
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58 | else{ |
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59 | dx=1.0; |
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60 | max=min; |
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61 | } |
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62 | |
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63 | for ( double x=min; x<=max; x+=dx) { |
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64 | double y = predict(x); |
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65 | double y_err = sqrt(prediction_error2(x)); |
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66 | os << x << "\t" << y << "\t" << y_err << "\n"; |
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67 | } |
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68 | return os; |
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69 | } |
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70 | |
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71 | |
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72 | double OneDimensional::r2(void) const |
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73 | { |
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74 | return 1 - chisq()/ap_.y_averager().sum_xx_centered(); |
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75 | } |
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76 | |
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77 | double OneDimensional::variance(void) const |
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78 | { |
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79 | return ap_.y_averager().variance(); |
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80 | } |
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81 | |
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82 | }}} // of namespaces regression, yat, and theplu |
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