学习python中matplotlib绘图设置坐标轴刻度、文本
http://www.jb51.net/article/134638.htm
http://www.jb51.net/article/134638.htm
Python绘图
https://www.cnblogs.com/chaoren399/p/5792168.html
http://www.jb51.net/article/134638.htm
http://www.jb51.net/article/134638.htm
https://www.cnblogs.com/chaoren399/p/5792168.html
原文：https://www.cnblogs.com/rrttp/p/8610263.html