#include int main() { using namespace matplot; auto x = iota(0, 20, 100); vector_1d y = {88, 67, 98, 43, 45, 65}; bar(x, y); xtickformat("usd"); std::cout << "xtickformat(): " << xtickformat() << std::endl; xtickformat("$%.0f"); show(); return 0; }