请老师做个DMI选股，先谢谢了！！

一与

强大于100时选股

N:=21;M:=6;M1:=20;  TR1:=EMA(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:=EMA(IF(HD>0 AND HD>LD,HD,0),N); DMM:=EMA(IF(LD>0 AND LD>HD,LD,0),N); PDI:= DMP*100/TR1; MDI:= DMM*100/TR1;  ADX: EMA((PDI-MDI)/(MDI+PDI)*100,M)*2; ADXR:EMA(ADX,M); ADMA:EMA(ADX,M1);  OMD:   
  (ADX-2*ADMA+ADXR)/2, COLORSTICK;  DRAWBAND(ADX,RGB(155,50,50),ADXR,RGB(0,100,50)); STICKLINE(OMD>REF(OMD,1) AND OMD>0,0,OMD,1,0),COLORRED; STICKLINE(OMD>REF(OMD,1) AND OMD<0,0,OMD,1,0),COLORGREEN; STICKLINE(OMD<REF(OMD,1),0,OMD,1,0),COLORCBCBC0; STICKLINE(OMD>=0 OR OMD<=0,0,0,50,1),COLORWHITE; ADX1: ADX,COLORRED; ADXR1:ADXR,COLORGREEN; ADMA1:ADMA;  强:IF(ADX1>=ADXR1,ADX1,DRAWNULL),COLORRED,LINETHICK3; 买入:IF(OMD>0 AND OMD-REF(OMD,1)>0,30,0); {OMD;}  110; 0; -110;