meshz_3.cpp

#include <cmath>
#include <matplot/matplot.h>

int main() {
    using namespace matplot;
    auto [X,Y] = meshgrid(iota(-5,.5,5));
    auto Z = transform(X,Y, [](double x, double y) {
        return y * sin(x) - x * cos(y);
    });
    meshz(X,Y,Z)->edge_color("b");

    wait();
    return 0;
}