third_party/matplotlib-cpp/examples/nonblock.cpp

#define _USE_MATH_DEFINES
#include <cmath>
#include "../matplotlibcpp.h"

namespace plt = matplotlibcpp;


using namespace matplotlibcpp;
using namespace std;

int main()
{
    // Prepare data.
    int n = 5000;
    std::vector<double> x(n), y(n), z(n), w(n,2);
    for(int i=0; i<n; ++i) {
        x.at(i) = i*i;
        y.at(i) = sin(2*M_PI*i/360.0);
        z.at(i) = 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);

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