绿箭卖，红箭买
 买入卖出请参考大盘，成交量和其它指标。
 本指标有未来函数，谨慎参考。

AA:ZIG(3,5)+0.5,COLOR338800,linethick2;
 GG:=EMA(AA,2);
 BB:ZIG(3,10),COLOREEDD00,linethick2;
 HH:=EMA(BB,2);
 DRAWTEXT(CROSS(HH,BB),H,'卖'),COLOROOFFOO;
 DRAWTEXT(CROSS(BB,HH),L,'买'),COLOROOOOFF;
 DRAWICON(CROSS(AA,GG),L,'BUY'),COLOROOFFOO;
 DRAWICON(CROSS(GG,AA),H,'SELL'),COLOROOOOFF;

IF(CLOSE>OPEN)
 RETURN "阳";
ELSE IF(CLOSE  RETURN "阴";
ELSE IF(CLOSE==OPEN AND OPEN>=CLOSE