(C++) gnuplot example 1: creating and saving a plot

gnuplot example 1 is a gnuplot example.

Technical facts

Application type(s)

Desktop application

Operating system(s) or programming environment(s)

Lubuntu 12.04 (precise)
Windows XP

IDE(s):

Qt Creator 2.4.1

Project type:

C++ standard:

C++98

Compiler(s):

G++ 4.6.3

Libraries used:

STL: GNU ISO C++ Library, version 4.6.3

Qt project file: CppGnuplotExample1.pro


TEMPLATE = app

CONFIG += console

CONFIG += qt

SOURCES += main.cpp

main.cpp


#include <fstream>


#include <string>


#include <cstdlib>





int main()


{


  #ifdef WIN32


  const std::string exe = "C:\\Progra~1\\gnuplot\\bin\\gnuplot.exe";


  #else


  const std::string exe = "gnuplot";


  #endif





  const std::string filename = "test.txt";


  {


    std::ofstream f(filename.c_str());





    f <<


      "set terminal pngcairo\n"


      "set output 'test.png'\n"


      "set key inside left top vertical Right noreverse enhanced autotitles box linetype -1 linewidth 1.000\n"


      "set samples 50, 50\n"


      "plot [-10:10] sin(x),atan(x),cos(atan(x))";


  }





  const std::string cmd = exe + " " + filename;





  std::system(cmd.c_str());








}

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