3D Scatter Plot animation

[Sean340927]

Hi Is there a way to update the data in a 3D scatter plot in order to produce an animation? (My intention is to plot 3D data in real time). I have checked both the animation.cpp and update.cpp examples, but had no luck. Any help would be appreciated. Many thanks.

[Hummel-Wang]

Hi
Have you found a solution? if have, Can you share with me...

[jmz3]

Hi, I figured out a way to solve this problem. To make an animation of the 3d plot, you have to specify the figure handle. The header get it done by default for the 2d plot, but not for 3d. So here is a possible way for doing this:

#include "matplotlibcpp.h"
#include <vector>
#include <map>
#include <cmath>

namespace plt = matplotlibcpp;
using namespace std;
const long fg = plt::figure(); // Define the figure handle number here

int main()
{
    std::map<std::string, std::string> kwargs;
    kwargs["marker"] = "o";
    kwargs["linestyle"] = "-";
    kwargs["linewidth"] = "1";
    kwargs["markersize"] = "12";
    vector<double> x, y, z;
    x = {1, 2, 3, 4};
    y = {1, 2, 2, 1};
    z = {1, 2, 3, 4};

    int loop_num = 0;
    while (loop_num <= 50)
    {
        for (int j = 0; j < x.size(); j++)
        {
            x[j] = x[j] + cos(2 * M_PI / (loop_num + 1));
        }
        plt::plot3(x, y, z, kwargs, fg); // Specify the number of the figure
        plt::xlim(0.0, 10.0);
        plt::ylim(0.0, 10.0);
        plt::pause(0.05);
        plt::clf();
        // plt::close();
        loop_num++;
    }

    return 0;
}