#define _USE_MATH_DEFINES

#include <cmath>

#include <matplotlibcpp.h>

#include <xtensor/xbuilder.hpp>

#include <xtensor/xtensor.hpp>

namespace plt = matplotlibcpp;

int main()

{

int n = 1000;

xt::xtensor<double,1> x, y, z;

for(int i=0; i<n; i++) {

x = xt::concatenate(xt::xtuple(x, xt::xtensor<double,1>{static_cast<double>(i*i)}));

y = xt::concatenate(xt::xtuple(y, xt::xtensor<double,1>{sin(2*M_PI*i/360.0)}));

z = xt::concatenate(xt::xtuple(z, xt::xtensor<double,1>{log(i)}));

if (i % 10 == 0) {

// Clear previous plot

plt::clf();

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

plt::plot(x-50000, y+2);

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

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

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

plt::xlim(-50000, n*n);

// Add graph title

plt::title("Sample figure");

// Enable legend.

plt::legend();

// Display plot continuously

plt::pause(0.01);

}

}

}