国外源码，分布状况图，很经典，值得学习。-Foreign source, distribution maps, a very classic, worth learning.

非常漂亮的分布图源码，国外网站下载，分享给大家。-Very nice map source, foreign websites, and share to others.

MFC 在dialog里面画二维坐标实时读取数据，坐标轴可以按照输入数据伸缩-The MFC dialog inside painting a two-dimensional coordinate real-time read data, the axis can be retractable in accordance with the input data