Difference between revisions of "Gnuplot in cpp"
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if(ANIMATIONON){ | if(ANIMATIONON){ | ||
// GNUPLOT | // GNUPLOT | ||
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// GNUPLOT INITIALIZATION | // GNUPLOT INITIALIZATION | ||
Gnuplot gp("My plot"); | Gnuplot gp("My plot"); | ||
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{ | { | ||
cout << ge.what() << endl; | cout << ge.what() << endl; | ||
| − | + | } | |
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} // END GNUPLOT | } // END GNUPLOT | ||
</code> | </code> | ||
Revision as of 12:53, 4 November 2009
How to plot using gnuplot in your C/C++ programs
This is a little guide that shows you how you can add a plotting function in your C/C++ program.
This approach has some advantages and disadvantages:
PROS - You don't need to write on files or similar and plot in a second moment through a Matlab/Octave/Gnuplot script
CONTRAS - You don't have all the potentiality of Matlab/Octave plotting even if you can program your plotting utilities
HOW TO
- You should download gnuplot-cpp library. I suggest you to use my version LINKHERE because the official one gnuplot-cpphas problems, (see below).
- To use the plotting library you should only need to include: "gnuplot-cpp/gnuplot_i.hpp"
- A code snippet is here presented that simply plots a 2D set of points:
if(ANIMATIONON){
// GNUPLOT
// GNUPLOT INITIALIZATION
Gnuplot gp("My plot");
//std::vector<double> x,y; // this are the vector containing (x,y) points
// END GNUPLOT INITIALIZATION
try {
gp.remove_tmpfiles(); // it is always better to do it
gp.reset_plot(); // delete the plot (like Matlab figure())
cout << endl << endl << "*** user-defined lists of points (x,y)" << endl;
gp.set_grid();
gp.set_style("points").plot_xy(x,y,"user-defined points 2d");
//sleep(1);
//usleep(3e5);
}
catch (GnuplotException ge)
{
cout << ge.what() << endl;
}
} // END GNUPLOT
