xfxyldj版请帮忙！
如何将下面的公式两线交叉时在K线的最高价或最低价的位置加‘箭头’信号？谢谢！
#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Silver
#property indicator_color2 Yellow
#property indicator_width1 2
extern int Signal=9;
double BBuffer[];
double DBuffer[];
int init()
{
SetIndexStyle(0,DRAW_LINE);
SetIndexStyle(1,DRAW_LINE);
SetIndexDrawBegin(0,20);
SetIndexDrawBegin(1,20+Signal);
IndicatorDigits(Digits);
SetIndexBuffer(0,BBuffer);
SetIndexBuffer(1,DBuffer);
return(0);
}
double aa(int x)
{ return((3*iClose(0,0,x)+iOpen(0,0,x)+iHigh(0,0,x)+iLow(0,0,x))/6); }
int start()
{
int limit;
int counted_bars=IndicatorCounted();
if(counted_bars>0) counted_bars--;
limit=Bars-counted_bars;
for(int i=0; i<limit; i++)
BBuffer=(20*aa(i)+19*aa(i+1)+18*aa(i+2)+17*aa(i+3)+16*aa(i+4)+15*aa(i+5)+14*aa(i+6)+13*aa(i+7)+12*aa(i+8)+11*aa(i+9)+10*aa(i+10)
+9*aa(i+11)+8*aa(i+12)+7*aa(i+13)+6*aa(i+14)+5*aa(i+15)+4*aa(i+16)+3*aa(i+17)+2*aa(i+18)+aa(i+19))/210;
for(i=0; i<limit; i++)
DBuffer=iMAOnArray(BBuffer,Bars,Signal,0,MODE_SMA,i);
return(0);
}
