请高手将下列通达信公式改为选股公式，要求选出紫色柱子。

股价趋势:= 3*SMA((CLOSE-LLV(LOW,27))/(HHV(HIGH,27)-LLV(LOW,27))*100,5,1)-2*SMA(SMA((CLOSE-LLV(LOW,27))/(HHV(HIGH,27)-LLV(LOW,27))*100,5,1),3,1);
底部警戒:=10,COLORRED,LINETHICK2;
底1:=CROSS(股价趋势,底部警戒);
A1:=(2*CLOSE+HIGH+LOW)/4;
A2:=LLV(LOW,27);
A3:=HHV(HIGH,27);
A4:=EMA((A1-A2)/(A3-A2)*100,13);
A5:=EMA(0.618*REF(A4,1)+0.382*A4,3);
底2:=CROSS(A4,A5) AND A4<16;
波底:=底1 AND 底2;
{奔牛}
VAR2:=(CLOSE-LLV(LOW,20))/(HHV(HIGH,20)-LLV(LOW,20))*100;
VAR3:=SMA(SMA(VAR2,3,1),3,1)/28.57;
VAR4:=EMA(VAR3,5);
VAR5:=3*VAR3-2*VAR4;
牛:=CROSS(VAR5,VAR3) AND VAR3<2.1 AND C>O;
{逃顶提示}
VARA2:=LLV(LOW,10);
VARA3:=HHV(HIGH,25);
动力线:= EMA((CLOSE-VARA2)/(VARA3-VARA2)*4,4);
{突破与破位}
N:=19;
VARB1:=HHV(HIGH,N);
VARB2:=LLV(LOW,N);
阻力线:=EMA((CLOSE-VARB2)/(VARB1-VARB2),21)-0.5;
操作线:=EMA((CLOSE-VARB2)/(VARB1-VARB2),5)-0.5;
突破:=CROSS(操作线,阻力线) AND 阻力线<0.1;
破位:=CROSS(阻力线,操作线) AND 阻力线>0.25;
{立桩成立判断}
V2:=IF(CURRBARSCOUNT=1,VOL*240/FROMOPEN/REF(VOL,1)-1,VOL/REF(VOL,1)-1);
T12:=V2>=1;
T0:=BARSLAST(T12);
L1:=REF(L,T0);
H1:=REF(H,T0);
L11:=MIN(REF(L,1),L);
L10:=MIN(L11,REF(L,2));
L21:=MAX(REF(L,1),L);
L20:=MAX(L21,REF(L,2));
T111:=(REF(V2>=1,3) OR REF(V2>=1,2) OR REF(V2>=1,1)) AND
((L10>L1 AND L20>H1) OR (L11>L1 AND L21>H1) OR (L>H1));
T11:T111 AND REF(T111,1)=0;

LC:=REF(CLOSE,1);
RSI:=((SMA(MAX((CLOSE - LC),0),3,1) / SMA(ABS((CLOSE - LC)),3,1)) * 100);
FF:=EMA(CLOSE,3);
MA15:=EMA(CLOSE,21);
底背离:=CROSS(FF,MA15);
XG:底背离;

FF:=EMA(CLOSE,3);
MA15:=EMA(CLOSE,21);

底背离:=CROSS(FF,MA15);

XG:底背离;