QtiPlot  0.9.8.2
Integration.h
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1 /***************************************************************************
2  File : Integration.h
3  Project : QtiPlot
4  --------------------------------------------------------------------
5  Copyright : (C) 2007 by Ion Vasilief
6  Email (use @ for *) : ion_vasilief*yahoo.fr
7  Description : Numerical integration of data sets
8 
9  ***************************************************************************/
10 
11 /***************************************************************************
12  * *
13  * This program is free software; you can redistribute it and/or modify *
14  * it under the terms of the GNU General Public License as published by *
15  * the Free Software Foundation; either version 2 of the License, or *
16  * (at your option) any later version. *
17  * *
18  * This program is distributed in the hope that it will be useful, *
19  * but WITHOUT ANY WARRANTY; without even the implied warranty of *
20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
21  * GNU General Public License for more details. *
22  * *
23  * You should have received a copy of the GNU General Public License *
24  * along with this program; if not, write to the Free Software *
25  * Foundation, Inc., 51 Franklin Street, Fifth Floor, *
26  * Boston, MA 02110-1301 USA *
27  * *
28  ***************************************************************************/
29 #ifndef INTEGRATION_H
30 #define INTEGRATION_H
31 
32 #include "Filter.h"
33 
34 class Integration : public Filter
35 {
36 Q_OBJECT
37 
38 public:
40 
41  Integration(ApplicationWindow *parent, Graph *g = 0);
42  Integration(ApplicationWindow *parent, QwtPlotCurve *c);
43  Integration(ApplicationWindow *parent, QwtPlotCurve *c, double start, double end);
44  Integration(ApplicationWindow *parent, Graph *g, const QString& curveTitle);
45  Integration(ApplicationWindow *parent, Graph *g, const QString& curveTitle, double start, double end);
46  Integration(ApplicationWindow *parent, Table *t, const QString& xCol, const QString& yCol, int start = 0, int end = -1, bool sort = false);
47  Integration(const QString& formula, const QString& var, ApplicationWindow *parent, Graph *g, double start, double end);
48 
49  void setWorkspaceSize(int size){d_workspace_size = size;};
50 
51  double area(){return d_area;};
52  QString variable(){return d_variable;};
53  QString formula(){return d_formula;};
54 
55 private:
56  void init();
57  QString logInfo();
58 
59  void output();
60 
61  double trapez();
62  double gslIntegration();
63 
65  double d_area;
67  double d_error;
70 
74  QString d_formula;
76  QString d_variable;
77 };
78 
79 #endif