标题：dmi交易系统

TR1 := SUM(MAX(MAX(HIGH-LOW,ABS(HIGH-REF(CLOSE,1))),ABS(LOW-REF(CLOSE,1))),m);

HD := HIGH-REF(HIGH,1);

LD := REF(LOW,1)-LOW;

PDM:= SUM(IF(HD>0 AND HD>LD,HD,0),m);

MDM:= SUM(IF(LD>0 AND LD>HD,LD,0),m);

PDI:= PDM*100/TR1;

MDI:= MDM*100/TR1;

buy(CROSS(PDI,MDI),1,thisclose);

sell(CROSS(MDI,PDI) ,1,thisclose);