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(C++) TestGnuplotInterface


GnuplotInterface is a class that enables the user to easily plot values in Gnuplot. It handles both the connection to Gnuplot and performs the window management as well. It creates a text-file in which the location of the Gnuplot executable can be entered (without recompiling the program).


The tool TestGnuplotInterface tests the GnuplotInterface class.


I only got this interface to work under MacOS


The one function that this class is built around is the popen function. This is a non-standard function to open a pipe. If this function is unknown under your programming environment, try either std::popen, std::_popen, std::__popen, popen, _popen or __popen.







Known compile errors


Technical facts









  Gnuplot Interface, a C++ class interface with Gnuplot.
  Copyright (C) 2005  Richel Bilderbeek

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.
//  Gnuplot - a C++ class interface with Gnuplot
//  V4.0
//  Created by Richel Bilderbeek on Fri Jun 10 2005.
//  Open source.
//  Richel Bilderbeek
//  Website: http://www.richelbilderbeek.nl
//  V4.0: 19th March 2008: Conformized code
//  V3.0: 23th September 2006: Implemented suggestion by Christoph Schmalz.
//                             According to Christoph it should work under Windows now.
//                             Made the code 100% Standard C++.
//  V2.0: 12th September 2005: Got program to compile under Windows environment.
//                             Program is found NOT to run under Windows.
//                             Somebody has an idea how to open Gnuplot.exe ???
//  V1.0: 10th June 2005: first version developed on Macintosh
//  This class functions well at a Macintosh. Under Windows, the pipe to the
//  Gnuplot executable (either MS-DOS or Windows executable) will not open.
//  If you have an idea to solve this, please E-mail me.
//  Feel free to contact me when:
//  - YOU can get the program to run under Windows (and normally it wouldn't)
//  - you encounter a compile error
//  - you have made additional functionality
//  - you have outsmarted me on this interface.

#include <iostream>
#include <vector>
#include <cmath>

//Yes, this #include is non-standard
//But it enables you to compile-and-run
//To do it correctly, add the file 'Gnuplot.cpp' to your project,
//  and #include 'Gnuplot.h' instead.
#include "UnitGnuplotInterface.cpp"

int main()
  Gnuplot myPlot;

  std::vector<double> data1(1000);
  std::vector<double> data2(1000);
  for (int j=0; j!=1000; ++j)
    const double jD = static_cast<double>(j);
    data1[j]= std::sin(jD/100.0);
    data2[j]= std::sin(jD/100.0);

  for (int i=0; i!=10; ++i)
    const double iD = static_cast<double>(i);
    for (int j=0; j!=1000; ++j)
      const double jD = static_cast<double>(j);







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