万科A在2018/10/30前30个交易日中每天交易价格的众数序列
Setsysparam(pn_Stock(),"SZ000002");
Setsysparam(pn_date(),20181030T);
return nday(30,"日期",SP_time(),"众数",Specall(Sp_Mode(Close(),tradedays(SP_time(),SP_time()+14/24+57/24/60)),Array(pn_date():SP_Time()+14/24+57/24/60,pn_Cycle():Cy_3s())));