QtiPlot
0.9.8.2
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00001 /*************************************************************************** 00002 File : NonLinearFit.h 00003 Project : QtiPlot 00004 -------------------------------------------------------------------- 00005 Copyright : (C) 2006 by Ion Vasilief 00006 Email (use @ for *) : ion_vasilief*yahoo.fr 00007 Description : NonLinearFit class 00008 00009 ***************************************************************************/ 00010 00011 /*************************************************************************** 00012 * * 00013 * This program is free software; you can redistribute it and/or modify * 00014 * it under the terms of the GNU General Public License as published by * 00015 * the Free Software Foundation; either version 2 of the License, or * 00016 * (at your option) any later version. * 00017 * * 00018 * This program is distributed in the hope that it will be useful, * 00019 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 00020 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * 00021 * GNU General Public License for more details. * 00022 * * 00023 * You should have received a copy of the GNU General Public License * 00024 * along with this program; if not, write to the Free Software * 00025 * Foundation, Inc., 51 Franklin Street, Fifth Floor, * 00026 * Boston, MA 02110-1301 USA * 00027 * * 00028 ***************************************************************************/ 00029 #ifndef NONLINEARFIT_H 00030 #define NONLINEARFIT_H 00031 00032 #include "Fit.h" 00033 00034 using namespace std; 00035 00036 class NonLinearFit : public Fit 00037 { 00038 Q_OBJECT 00039 00040 public: 00041 NonLinearFit(ApplicationWindow *parent, Graph *g); 00042 NonLinearFit(ApplicationWindow *parent, QwtPlotCurve *c); 00043 NonLinearFit(ApplicationWindow *parent, QwtPlotCurve *c, double start, double end); 00044 NonLinearFit(ApplicationWindow *parent, Graph *g, const QString& curveTitle); 00045 NonLinearFit(ApplicationWindow *parent, Graph *g, const QString& curveTitle, double start, double end); 00046 NonLinearFit(ApplicationWindow *parent, Table *t, const QString& xCol, const QString& yCol, int startRow = 1, int endRow = -1); 00047 00048 double eval(double *par, double x); 00049 00050 virtual bool setParametersList(const QStringList& lst); 00051 virtual bool setFormula(const QString& s, bool = true); 00052 00053 QMap<QString, double> constants(){return d_constants;}; 00054 void setConstant(const QString& parName, double val); 00055 void removeConstant(const QString& parName){d_constants.remove(parName);}; 00056 void removeConstants(){d_constants.clear();}; 00057 int constantsCount(){return d_constants.size();}; 00058 QList<QString> constantsList(){return d_constants.keys();}; 00059 double constValue(const QString& name){return d_constants.value(name);}; 00060 00061 virtual QString legendInfo(); 00062 static QStringList guessParameters(const QString& s, bool *error = 0, string *errMsg = 0, const QString& var = "x"); 00063 00064 protected: 00065 QString logFitInfo(int iterations, int status); 00066 FunctionCurve* insertFitFunctionCurve(const QString& name, int penWidth = 1, bool updateData = true); 00067 00068 private: 00069 void calculateFitCurveData(double *X, double *Y); 00070 void init(); 00071 virtual bool removeDataSingularities(); 00072 void removePole(int index); 00073 00074 QMap<QString, double> d_constants; 00075 }; 00076 #endif