This interface allows gnuplot to be controlled from C++ and is designed to be the lowest hanging fruit. In other words, if you know how gnuplot works it should only take 30 seconds to learn this library. Basically it is just an iostream pipe to gnuplot with some extra functions for pushing data arrays and getting mouse clicks. Data sources include STL containers (eg. vector), Blitz++, and armadillo. You can use nested data types like std::vector<std::vector<std::pair<double, double>>> (as well as even more exotic types). Support for custom data types is possible.

This is a low level interface, and usage involves manually sending commands to gnuplot using the "<<" operator (so you need to know gnuplot syntax). This is in my opinion the easiest way to do it if you are already comfortable with using gnuplot. If you would like a more high level interface check out the gnuplot-cpp library (http://code.google.com/p/gnuplot-cpp).

Download

Documentation

Documentation is available [here] but also you can look at the example programs (starting with "example-misc.cc").

Example 1

Iptv M3u Playlist 2024 May 2026

The streaming landscape is evolving, and have become a cornerstone for viewers seeking a customized, flexible way to access live television in 2024. Whether you're looking to cut the cord or simply expand your international channel lineup, understanding how M3U playlists work is the first step toward a seamless entertainment experience. What is an IPTV M3U Playlist?

The playlist file doesn't actually store any video content. Instead, it provides instructions to your media player on where to fetch the stream—much like a curated index for a library.

While the internet is full of "free" links, many are unstable or host pirated content. To ensure high-quality, legal streaming, focus on these verified repositories: iptv m3u playlist 2024

An is essentially a digital map. It is a plain-text file (often with .m3u or .m3u8 extensions) that contains a structured list of web links to live video streams.

Focuses on mainstream channels that are officially free in their respective countries, such as local news and public broadcasts. The streaming landscape is evolving, and have become

One of the most comprehensive and community-maintained collections of free-to-air (FTA) channels from around the world.

Many major broadcasters like BBC World Service, NHK World, and Deutsche Welle provide official M3U links for their international audiences. The playlist file doesn't actually store any video content

To use these playlists, you need a compatible player. Here are the top-rated options for various devices: Free-TV/IPTV: M3U Playlist for free TV channels - GitHub

Example 2

// Demo of sending data via temporary files.  The default is to send data to gnuplot directly
// through stdin.
//
// Compile it with:
//   g++ -o example-tmpfile example-tmpfile.cc -lboost_iostreams -lboost_system -lboost_filesystem

#include <map>
#include <vector>
#include <cmath>

#include "gnuplot-iostream.h"

int main() {
	Gnuplot gp;

	std::vector<std::pair<double, double> > xy_pts_A;
	for(double x=-2; x<2; x+=0.01) {
		double y = x*x*x;
		xy_pts_A.push_back(std::make_pair(x, y));
	}

	std::vector<std::pair<double, double> > xy_pts_B;
	for(double alpha=0; alpha<1; alpha+=1.0/24.0) {
		double theta = alpha*2.0*3.14159;
		xy_pts_B.push_back(std::make_pair(cos(theta), sin(theta)));
	}

	gp << "set xrange [-2:2]\nset yrange [-2:2]\n";
	// Data will be sent via a temporary file.  These are erased when you call
	// gp.clearTmpfiles() or when gp goes out of scope.  If you pass a filename
	// (e.g. "gp.file1d(pts, 'mydata.dat')"), then the named file will be created
	// and won't be deleted (this is useful when creating a script).
	gp << "plot" << gp.file1d(xy_pts_A) << "with lines title 'cubic',"
		<< gp.file1d(xy_pts_B) << "with points title 'circle'" << std::endl;

#ifdef _WIN32
	// For Windows, prompt for a keystroke before the Gnuplot object goes out of scope so that
	// the gnuplot window doesn't get closed.
	std::cout << "Press enter to exit." << std::endl;
	std::cin.get();
#endif
}