text: #include <matplot/matplot.h>
  
  int main() {
      using namespace matplot;
  
      auto x = linspace(0,50, 20);
      auto y = transform(x, [](double x) { return pow(x,2); });
      stem(x,y);
  
      std::cout << "ytickangle(): " << ytickangle() << std::endl;
  
      wait();
      return 0;
  }