下面二个选股公式一个是系统指标DMI 另一个为改了参数的DMI指标（1）：N:=3;MM:=2;MTR:=EXPMEMA(MAX(MAX(HIGH-LOW,ABS(HIGH-REF(CLOSE,1))),ABS(REF(CLOSE,1)-LOW)),N);HD :=HIGH-REF(HIGH,1);LD :=REF(LOW,1)-LOW;DMP:=EXPMEMA(IF(HD>0&&HD>LD,HD,0),N);DMM:=EXPMEMA(IF(LD>0&&LD>HD,LD,0),N);PDI:= DMP*100/MTR;MDI:= DMM*100/MTR;ADX:= EXPMEMA(ABS(MDI-PDI)/(MDI+PDI)*100,MM);ADXR:=EXPMEMA(ADX,MM);AA:CROSS(PDI,MDI); （2）：N:=14;MM:=6;MTR:=EXPMEMA(MAX(MAX(HIGH-LOW,ABS(HIGH-REF(CLOSE,1))),ABS(REF(CLOSE,1)-LOW)),N);HD :=HIGH-REF(HIGH,1);LD :=REF(LO