QtiPlot  0.9.8.2
Integration.h
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00001 /***************************************************************************
00002     File                 : Integration.h
00003     Project              : QtiPlot
00004     --------------------------------------------------------------------
00005     Copyright            : (C) 2007 by Ion Vasilief
00006     Email (use @ for *)  : ion_vasilief*yahoo.fr
00007     Description          : Numerical integration of data sets
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 INTEGRATION_H
00030 #define INTEGRATION_H
00031 
00032 #include "Filter.h"
00033 
00034 class Integration : public Filter
00035 {
00036 Q_OBJECT
00037 
00038 public:
00039     enum Integrand{DataSet, AnalyticalFunction};
00040 
00041     Integration(ApplicationWindow *parent, Graph *g = 0);
00042     Integration(ApplicationWindow *parent, QwtPlotCurve *c);
00043     Integration(ApplicationWindow *parent, QwtPlotCurve *c, double start, double end);
00044     Integration(ApplicationWindow *parent, Graph *g, const QString& curveTitle);
00045     Integration(ApplicationWindow *parent, Graph *g, const QString& curveTitle, double start, double end);
00046     Integration(ApplicationWindow *parent, Table *t, const QString& xCol, const QString& yCol, int start = 0, int end = -1, bool sort = false);
00047     Integration(const QString& formula, const QString& var, ApplicationWindow *parent, Graph *g, double start, double end);
00048 
00049     void setWorkspaceSize(int size){d_workspace_size = size;};
00050 
00051     double area(){return d_area;};
00052     QString variable(){return d_variable;};
00053     QString formula(){return d_formula;};
00054 
00055 private:
00056     void init();
00057     QString logInfo();
00058 
00059     void output();
00060 
00061     double trapez();
00062     double gslIntegration();
00063 
00065     double d_area;
00067     double d_error;
00069     int d_workspace_size;
00070 
00072     Integrand d_integrand;
00074     QString d_formula;
00076     QString d_variable;
00077 };
00078 
00079 #endif