PolynomialFit.h

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00001 /***************************************************************************
00002     File                 : PolynomialFit.h
00003     Project              : QtiPlot
00004     --------------------------------------------------------------------
00005     Copyright            : (C) 2006 by Ion Vasilief
00006     Email (use @ for *)  : ion_vasilief*yahoo.fr
00007     Description          : Polynomial Fit and Linear Fit classes
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 POLYNOMIALFIT_H
00030 #define POLYNOMIALFIT_H
00031 
00032 #include "Fit.h"
00033 
00034 class PolynomialFit : public Fit
00035 {
00036     Q_OBJECT
00037 
00038     public:
00039         PolynomialFit(ApplicationWindow *parent, QwtPlotCurve *c, int order = 2, bool legend = false);
00040         PolynomialFit(ApplicationWindow *parent, QwtPlotCurve *c, double start, double end, int order = 2, bool legend = false);
00041         PolynomialFit(ApplicationWindow *parent, Graph *g, int order = 2, bool legend = false);
00042         PolynomialFit(ApplicationWindow *parent, Graph *g, QString& curveTitle, int order = 2, bool legend = false);
00043         PolynomialFit(ApplicationWindow *parent, Graph *g, QString& curveTitle, double start, double end, int order = 2, bool legend = false);
00044         PolynomialFit(ApplicationWindow *parent, Table *t, const QString& xCol, const QString& yCol, int startRow = 1, int endRow = -1, int order = 2, bool legend = false);
00045 
00046         virtual QString legendInfo();
00047         void fit();
00048 
00049         int order(){return d_order;};
00050         void setOrder(int order);
00051 
00052         static QString generateFormula(int order);
00053         static QStringList generateParameterList(int order);
00054 
00055         virtual double eval(double *par, double x);
00056 
00057     private:
00058         void init();
00059         void calculateFitCurveData(double *X, double *Y);
00060 
00061         int d_order;
00062         bool show_legend;
00063 };
00064 
00065 class LinearFit : public Fit
00066 {
00067     Q_OBJECT
00068 
00069     public:
00070         LinearFit(ApplicationWindow *parent, Graph *g);
00071         LinearFit(ApplicationWindow *parent, QwtPlotCurve *c);
00072         LinearFit(ApplicationWindow *parent, QwtPlotCurve *c, double start, double end);
00073         LinearFit(ApplicationWindow *parent, Graph *g, const QString& curveTitle);
00074         LinearFit(ApplicationWindow *parent, Graph *g, const QString& curveTitle, double start, double end);
00075         LinearFit(ApplicationWindow *parent, Table *t, const QString& xCol, const QString& yCol, int startRow = 1, int endRow = -1);
00076 
00077         void fit();
00078         virtual double eval(double *par, double x){return par[0] + par[1]*x;};
00079 
00080     private:
00081         void init();
00082         void calculateFitCurveData(double *X, double *Y);
00083 };
00084 
00085 class LinearSlopeFit : public Fit
00086 {
00087     Q_OBJECT
00088 
00089     public:
00090         LinearSlopeFit(ApplicationWindow *parent, Graph *g);
00091         LinearSlopeFit(ApplicationWindow *parent, Graph *g, const QString& curveTitle);
00092         LinearSlopeFit(ApplicationWindow *parent, Graph *g, const QString& curveTitle, double start, double end);
00093         LinearSlopeFit(ApplicationWindow *parent, Table *t, const QString& xCol, const QString& yCol, int startRow = 1, int endRow = -1);
00094 
00095         void fit();
00096         virtual double eval(double *par, double x){return par[0]*x;};
00097 
00098     private:
00099         void init();
00100         void calculateFitCurveData(double *X, double *Y);
00101 };
00102 #endif

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