#define _USE_MATH_DEFINES

#include <iostream>

#include <cmath>

#include "../matplotlibcpp.h"

#include <xtensor/xbuilder.hpp>

#include <xtensor/xtensor.hpp>

namespace plt = matplotlibcpp;

int main()

{

// Prepare data.

int n = 5000;

xt::xtensor<double, 1> i = xt::linspace<double>(0, (n-1), n);

std::array<std::size_t,1> shape{static_cast<std::size_t>(n)};

xt::xtensor<double, 1> w(shape);

w.fill(2.0);

xt::xtensor<double, 1> x = xt::square(i);

xt::xtensor<double, 1> y = xt::sin(2 * xt::numeric_constants<double>::PI * i / 360.0);

xt::xtensor<double, 1> z = xt::log(i);

// Plot line from given x and y data. Color is selected automatically.

plt::subplot(2,2,1);

plt::plot(x, y);

// Plot a red dashed line from given x and y data.

plt::subplot(2,2,2);

plt::plot(x, w,"r--");

// Plot a line whose name will show up as "log(x)" in the legend.

plt::subplot(2,2,3);

plt::named_plot("log(x)", x, z);

// Set x-axis to interval [0,1000000]

plt::xlim(0, 1000*1000);

// Add graph title

plt::title("Sample figure");

// Enable legend.

plt::legend();

plt::show(false);

std::cout << "matplotlibcpp::show() is working in an non-blocking mode" << std::endl;

std::getchar();

}