Matlab program to plot efficient frontier and minimum variance portfolio

matlab的有效前沿描绘，主要是用金融工具包里的函数-efficient frontier

本段代码使用quantOS系统实现了Markowitz资产组合优化，并画出有效前沿。并比较两组股票组合有效前沿的差异(This code uses the QuantOS system to implement Markowitz portfolio optimization and draws a valid frontier. And compare the difference between the effective frontiers of the two stock combina