个人在学习correlation study, 目前有2个marco function不是很理解,请高手指教:

%chg_data(corr_spearman);
%chg_data(corr_pearson);
%chg_data(corr_hoeffding);

%m_sort_merge(variable,corr_spearman,corr_pearson,&out_D,1);
%m_sort_merge(variable,corr_hoeffding,&out_D,&out_D,1);


谁能讲解一下上面这2个function? 网络上也查不到这个