Method is_3d

source/matplot/core/axes_object.cpp:88–91

    }

    bool axes_object::is_3d() {
        return axes_category() == axes_category::three_dimensional ||
               axes_category() == axes_category::three_dimensional_map;
    }

    bool axes_object::is_3d_map() {
        return axes_category() == axes_category::three_dimensional_map;