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

Naturist Freedom Miss Child Pageant Contest Nudist Portable

You cannot discuss wellness without discussing the brain. Chronic body dissatisfaction is a predictor of depression, anxiety, and social isolation.

True wellness requires body neutrality. Body positivity is the goal, but body neutrality is the vehicle. You don't have to love your stretch marks every second of the day. You just have to stop hating them. Neutrality sounds like:

For decades, the multi-billion dollar wellness industry has sold us a simple, seductive lie: that health has a look. We have been conditioned to believe that thinness equals fitness, that a flat stomach is the ultimate barometer of well-being, and that discipline looks like deprivation.

But a quiet revolution has been brewing. It is challenging the orthodoxy of "no pain, no gain" and demanding a more humane approach to self-care.

It is called the body positivity and wellness lifestyle.

At first glance, these two concepts—body acceptance and active wellness—seem contradictory. How can you strive for health if you are supposed to be okay with where you are right now? Yet, when woven together, they form the only sustainable path to lifelong vitality. This article explores how merging radical self-acceptance with gentle, consistent movement can heal your relationship with food, fitness, and your own reflection. naturist freedom miss child pageant contest nudist portable

Walk into any high-end wellness studio. The lights are low, the incense is burning, and the instructor’s voice is a velvet hammer: “Listen to your body.” Then look at the walls. The models are lean, lithe, and lit from within. They are not bloated. They do not have cellulite. Their “strength” looks suspiciously like thinness.

This is the wellness industry’s original sin: it often confuses health with aesthetics.

Body positivity argues that your worth is not contingent on your waistline. Wellness, in its commercialized form, often argues that your waistline is the ultimate report card. You see it in “clean eating” (which slides into orthorexia), in “toxin-flushing” (which implies your natural body is dirty), and in “bio-hacking” (which suggests your factory settings are broken).

The result is a new kind of shame, disguised as self-improvement. You’re not dieting; you’re nourishing. You’re not over-exercising; you’re training. The language changed, but the prison remained.

You do not have to choose between wanting to feel energetic and accepting your thighs. The goal isn’t to abandon wellness—it’s to de-armor it. You cannot discuss wellness without discussing the brain

The next time you hear “wellness,” ask yourself: Does this practice make me feel more at home in my body, or more at war with it? If it’s war, that’s not wellness. That’s just diet culture in a crystal necklace.

And if it’s peace? That’s the real glow-up. That’s body positivity, alive and well.

In short: The feature argues that while commercial wellness often contradicts body positivity by prioritizing aesthetic goals, a genuine, ethical wellness practice is possible—one centered on joyful movement, intuitive eating, and rejecting moral judgments about food and bodies. The key is shifting focus from fixing to feeling.

There is significant confusion about body positivity. Critics claim it glorifies obesity or promotes laziness. That is a misunderstanding of its core tenet.

Body positivity is not the rejection of health; it is the rejection of shame. In short: The feature argues that while commercial

The movement began with fat activists, particularly Black, queer, and disabled women, fighting against systemic discrimination. It asserts that:

When applied to a wellness lifestyle, body positivity acts as the psychological safety net. It prevents the diet-binge cycle. It stops the self-loathing that leads to emotional eating. It allows you to move your body because it feels good, not because you are punishing yourself for eating dessert.

When you adopt a body positive wellness lifestyle, the physical changes are often a happy byproduct, not the main goal. But they do come.

People report:

Most importantly, you gain time. You stop wasting hours obsessing over meal prep, cheat days, detoxes, and "getting back on track." You realize you were never off the track. The track is your life, and you are living it now.

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
}