把dmi新编指标在0轴以上金叉改为选股

编写要求：

在0轴以上金叉改为选股 如图 源码 {DMI新编} 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=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;

解答：

?N:=21;M:=6;

TR1:=EMA(MAX(MAX(HIGH-LOW,ABS(HIGH-REF(CLOSE,1))),ABS(REF(CLOSE,1)-LOW)),N);