现货趋势跟踪指标之（指导线）主图

买线:=EMA(C,2);
卖线:=EMA(SLOPE(C,21)*20+C,42);
 BU:=cross(买线,卖线);
SEL:=cross(卖线,买线);
drawtext(bu,LOW*0.999,'B'),colorred,linethick3;
  DRAWTEXT(bu,LOW,'﹉'),Color208FFF,LINETHICK3;
  DRAWTEXT(sel,HIGH,'﹉'),ColorFFFF00,LINETHICK3;
  drawtext(sel,HIGH*1.008,'S'),colorffff00,linethick3;
  stickline(买线 >= 卖线,low,high,1,0),colorred;
  stickline(买线 >= 卖线,close,open,4.5,0),color0000aa;
  stickline(买线 >= 卖线,close,open,4,0),color0000cc;
  stickline(买线 >= 卖线,close,open,3,0),color0000cc;
  stickline(买线 >= 卖线,close,open,2,0),color0000ee;
  stickline(买线 < 卖线,close,open,4.5,0),coloraaaa00;
  stickline(买线 < 卖线,close,open,4,0),colorbbbb00;
  stickline(买线 < 卖线,close,open,3,0),colorcccc00;
  stickline(买线 < 卖线,close,open,2,0),coloreeee00;
  stickline(买线 < 卖线,low,high,1,0),colorffff00;
  stickline(cross(买线,卖线)
or cross(卖线,买线),open,close,3,0),color00ffff;
  指导线:
EMA((EMA(CLOSE,4)+EMA(CLOSE