nomogram 如何可视化restricted cubic spline

请教各位大神：
nomogram 如何可视化restricted cubic spline。学习文献来自
Construction of a nomogram for the prediction of
prognosis in patients with resectable gastric cancer
undergoing fewer than sixteen lymph node biopsies

https://www.cnblogs.com/Mao1518202/p/11582472.html