using namespace matplot;

std::vector<std::vector<double>> Y = {{1, 3, 1, 2}, {5, 2, 5, 6}, {3, 7, 3, 1}};

auto f = gcf();

f->width(f->width()*2);

subplot(1,2,0);

auto h1 = area(Y, -4.);

h1[0]->line_style(":");

h1[1]->line_style(":");

h1[2]->line_style(":");

h1[0]->face_color({0,0,0.25,0.25});

h1[1]->face_color({0,0,0.5,0.5});

h1[2]->face_color({0,0,0.75,0.75});

title("Stacked");

subplot(1,2,1);

auto h2 = area(Y,-4,false);

h2[0]->line_style(":");

h2[1]->line_style(":");

h2[2]->line_style(":");

h2[0]->face_color({0.2,0,0.25,0.25});

h2[1]->face_color({0.2,0,0.5,0.5});

h2[2]->face_color({0.2,0,0.75,0.75});

title("Not stacked");

wait();

return 0;

}