去趋势互相关分析（dcca）相关代码，包括dcca,df-dxa等，希望对大家有用处！(To trend cross correlation analysis (dcca) related code, including dcca,df-dxa, hope to be useful to everyone!)

多重分形去趋势交叉相关性分析DCCA,以及MF-DXA等程序代码，希望对大家有帮助(Multifractal cross correlation analysis of DCCA, and program code such as mm-dxa, hope to be helpful)